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mariadb/storage/innobase/handler/ha_innodb.cc

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/*****************************************************************************
Copyright (c) 2000, 2015, Oracle and/or its affiliates. All Rights Reserved.
Copyright (c) 2008, 2009 Google Inc.
Copyright (c) 2009, Percona Inc.
Copyright (c) 2012, Facebook Inc.
Portions of this file contain modifications contributed and copyrighted by
Google, Inc. Those modifications are gratefully acknowledged and are described
briefly in the InnoDB documentation. The contributions by Google are
incorporated with their permission, and subject to the conditions contained in
the file COPYING.Google.
Portions of this file contain modifications contributed and copyrighted
by Percona Inc.. Those modifications are
gratefully acknowledged and are described briefly in the InnoDB
documentation. The contributions by Percona Inc. are incorporated with
their permission, and subject to the conditions contained in the file
COPYING.Percona.
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
*****************************************************************************/
#include <sql_table.h> // explain_filename, nz2, EXPLAIN_PARTITIONS_AS_COMMENT,
// EXPLAIN_FILENAME_MAX_EXTRA_LENGTH
#include <sql_acl.h> // PROCESS_ACL
#include <debug_sync.h> // DEBUG_SYNC
#include <my_base.h> // HA_OPTION_*
#include <mysys_err.h>
#include <mysql/innodb_priv.h>
#include <my_check_opt.h>
/** @file ha_innodb.cc */
/* Include necessary InnoDB headers */
#include "univ.i"
#include "buf0dump.h"
#include "buf0lru.h"
#include "buf0flu.h"
#include "buf0dblwr.h"
#include "btr0sea.h"
#include "os0file.h"
#include "os0thread.h"
#include "srv0start.h"
#include "srv0srv.h"
#include "trx0roll.h"
#include "trx0trx.h"
#include "trx0sys.h"
#include "mtr0mtr.h"
#include "rem0types.h"
#include "row0ins.h"
#include "row0mysql.h"
#include "row0sel.h"
#include "row0upd.h"
#include "log0log.h"
#include "lock0lock.h"
#include "dict0crea.h"
#include "btr0cur.h"
#include "btr0btr.h"
#include "fsp0fsp.h"
#include "sync0sync.h"
#include "fil0fil.h"
#include "trx0xa.h"
#include "row0merge.h"
#include "dict0boot.h"
#include "dict0stats.h"
#include "dict0stats_bg.h"
#include "ha_prototypes.h"
#include "ut0mem.h"
#include "ibuf0ibuf.h"
#include "dict0dict.h"
#include "srv0mon.h"
#include "api0api.h"
#include "api0misc.h"
#include "pars0pars.h"
#include "fts0fts.h"
#include "fts0types.h"
#include "row0import.h"
#include "row0quiesce.h"
#ifdef UNIV_DEBUG
#include "trx0purge.h"
#endif /* UNIV_DEBUG */
#include "fts0priv.h"
#include "page0zip.h"
enum_tx_isolation thd_get_trx_isolation(const THD* thd);
#include "ha_innodb.h"
#include "i_s.h"
# ifndef MYSQL_PLUGIN_IMPORT
# define MYSQL_PLUGIN_IMPORT /* nothing */
# endif /* MYSQL_PLUGIN_IMPORT */
/** to protect innobase_open_files */
static mysql_mutex_t innobase_share_mutex;
/** to force correct commit order in binlog */
static ulong commit_threads = 0;
static mysql_cond_t commit_cond;
static mysql_mutex_t commit_cond_m;
static bool innodb_inited = 0;
#define INSIDE_HA_INNOBASE_CC
#define EQ_CURRENT_THD(thd) ((thd) == current_thd)
static struct handlerton* innodb_hton_ptr;
static const long AUTOINC_OLD_STYLE_LOCKING = 0;
static const long AUTOINC_NEW_STYLE_LOCKING = 1;
static const long AUTOINC_NO_LOCKING = 2;
static long innobase_mirrored_log_groups;
static long innobase_log_buffer_size;
static long innobase_additional_mem_pool_size;
static long innobase_file_io_threads;
static long innobase_open_files;
static long innobase_autoinc_lock_mode;
static ulong innobase_commit_concurrency = 0;
static ulong innobase_read_io_threads;
static ulong innobase_write_io_threads;
static long innobase_buffer_pool_instances = 1;
static long long innobase_buffer_pool_size, innobase_log_file_size;
/** Percentage of the buffer pool to reserve for 'old' blocks.
Connected to buf_LRU_old_ratio. */
static uint innobase_old_blocks_pct;
/** Maximum on-disk size of change buffer in terms of percentage
of the buffer pool. */
static uint innobase_change_buffer_max_size = CHANGE_BUFFER_DEFAULT_SIZE;
/* The default values for the following char* start-up parameters
are determined in innobase_init below: */
static char* innobase_data_home_dir = NULL;
static char* innobase_data_file_path = NULL;
static char* innobase_file_format_name = NULL;
static char* innobase_change_buffering = NULL;
static char* innobase_enable_monitor_counter = NULL;
static char* innobase_disable_monitor_counter = NULL;
static char* innobase_reset_monitor_counter = NULL;
static char* innobase_reset_all_monitor_counter = NULL;
/* The highest file format being used in the database. The value can be
set by user, however, it will be adjusted to the newer file format if
a table of such format is created/opened. */
static char* innobase_file_format_max = NULL;
static char* innobase_file_flush_method = NULL;
/* This variable can be set in the server configure file, specifying
stopword table to be used */
static char* innobase_server_stopword_table = NULL;
/* Below we have boolean-valued start-up parameters, and their default
values */
static ulong innobase_fast_shutdown = 1;
static my_bool innobase_file_format_check = TRUE;
#ifdef UNIV_LOG_ARCHIVE
static my_bool innobase_log_archive = FALSE;
static char* innobase_log_arch_dir = NULL;
#endif /* UNIV_LOG_ARCHIVE */
static my_bool innobase_use_doublewrite = TRUE;
static my_bool innobase_use_checksums = TRUE;
static my_bool innobase_locks_unsafe_for_binlog = FALSE;
static my_bool innobase_rollback_on_timeout = FALSE;
static my_bool innobase_create_status_file = FALSE;
static my_bool innobase_stats_on_metadata = TRUE;
static my_bool innobase_large_prefix = FALSE;
static my_bool innodb_optimize_fulltext_only = FALSE;
static char* internal_innobase_data_file_path = NULL;
static char* innodb_version_str = (char*) INNODB_VERSION_STR;
/** Possible values for system variable "innodb_stats_method". The values
are defined the same as its corresponding MyISAM system variable
"myisam_stats_method"(see "myisam_stats_method_names"), for better usability */
static const char* innodb_stats_method_names[] = {
"nulls_equal",
"nulls_unequal",
"nulls_ignored",
NullS
};
/** Used to define an enumerate type of the system variable innodb_stats_method.
This is the same as "myisam_stats_method_typelib" */
static TYPELIB innodb_stats_method_typelib = {
array_elements(innodb_stats_method_names) - 1,
"innodb_stats_method_typelib",
innodb_stats_method_names,
NULL
};
/** Possible values for system variable "innodb_checksum_algorithm". */
static const char* innodb_checksum_algorithm_names[] = {
"crc32",
"strict_crc32",
"innodb",
"strict_innodb",
"none",
"strict_none",
NullS
};
/** Used to define an enumerate type of the system variable
innodb_checksum_algorithm. */
static TYPELIB innodb_checksum_algorithm_typelib = {
array_elements(innodb_checksum_algorithm_names) - 1,
"innodb_checksum_algorithm_typelib",
innodb_checksum_algorithm_names,
NULL
};
/* The following counter is used to convey information to InnoDB
about server activity: in case of normal DML ops it is not
sensible to call srv_active_wake_master_thread after each
operation, we only do it every INNOBASE_WAKE_INTERVAL'th step. */
#define INNOBASE_WAKE_INTERVAL 32
static ulong innobase_active_counter = 0;
static hash_table_t* innobase_open_tables;
/** Allowed values of innodb_change_buffering */
static const char* innobase_change_buffering_values[IBUF_USE_COUNT] = {
"none", /* IBUF_USE_NONE */
"inserts", /* IBUF_USE_INSERT */
"deletes", /* IBUF_USE_DELETE_MARK */
"changes", /* IBUF_USE_INSERT_DELETE_MARK */
"purges", /* IBUF_USE_DELETE */
"all" /* IBUF_USE_ALL */
};
/* Call back function array defined by MySQL and used to
retrieve FTS results. */
const struct _ft_vft ft_vft_result = {NULL,
innobase_fts_find_ranking,
innobase_fts_close_ranking,
innobase_fts_retrieve_ranking,
NULL};
const struct _ft_vft_ext ft_vft_ext_result = {innobase_fts_get_version,
innobase_fts_flags,
innobase_fts_retrieve_docid,
innobase_fts_count_matches};
#ifdef HAVE_PSI_INTERFACE
/* Keys to register pthread mutexes/cond in the current file with
performance schema */
static mysql_pfs_key_t innobase_share_mutex_key;
static mysql_pfs_key_t commit_cond_mutex_key;
static mysql_pfs_key_t commit_cond_key;
static PSI_mutex_info all_pthread_mutexes[] = {
{&commit_cond_mutex_key, "commit_cond_mutex", 0},
{&innobase_share_mutex_key, "innobase_share_mutex", 0}
};
static PSI_cond_info all_innodb_conds[] = {
{&commit_cond_key, "commit_cond", 0}
};
# ifdef UNIV_PFS_MUTEX
/* all_innodb_mutexes array contains mutexes that are
performance schema instrumented if "UNIV_PFS_MUTEX"
is defined */
static PSI_mutex_info all_innodb_mutexes[] = {
{&autoinc_mutex_key, "autoinc_mutex", 0},
# ifndef PFS_SKIP_BUFFER_MUTEX_RWLOCK
{&buffer_block_mutex_key, "buffer_block_mutex", 0},
# endif /* !PFS_SKIP_BUFFER_MUTEX_RWLOCK */
{&buf_pool_mutex_key, "buf_pool_mutex", 0},
{&buf_pool_zip_mutex_key, "buf_pool_zip_mutex", 0},
{&cache_last_read_mutex_key, "cache_last_read_mutex", 0},
{&dict_foreign_err_mutex_key, "dict_foreign_err_mutex", 0},
{&dict_sys_mutex_key, "dict_sys_mutex", 0},
{&file_format_max_mutex_key, "file_format_max_mutex", 0},
{&fil_system_mutex_key, "fil_system_mutex", 0},
{&flush_list_mutex_key, "flush_list_mutex", 0},
{&fts_bg_threads_mutex_key, "fts_bg_threads_mutex", 0},
{&fts_delete_mutex_key, "fts_delete_mutex", 0},
{&fts_optimize_mutex_key, "fts_optimize_mutex", 0},
{&fts_doc_id_mutex_key, "fts_doc_id_mutex", 0},
{&fts_pll_tokenize_mutex_key, "fts_pll_tokenize_mutex", 0},
{&log_flush_order_mutex_key, "log_flush_order_mutex", 0},
{&hash_table_mutex_key, "hash_table_mutex", 0},
{&ibuf_bitmap_mutex_key, "ibuf_bitmap_mutex", 0},
{&ibuf_mutex_key, "ibuf_mutex", 0},
{&ibuf_pessimistic_insert_mutex_key,
"ibuf_pessimistic_insert_mutex", 0},
# ifndef HAVE_ATOMIC_BUILTINS
{&server_mutex_key, "server_mutex", 0},
# endif /* !HAVE_ATOMIC_BUILTINS */
{&log_sys_mutex_key, "log_sys_mutex", 0},
# ifdef UNIV_MEM_DEBUG
{&mem_hash_mutex_key, "mem_hash_mutex", 0},
# endif /* UNIV_MEM_DEBUG */
{&mem_pool_mutex_key, "mem_pool_mutex", 0},
{&mutex_list_mutex_key, "mutex_list_mutex", 0},
{&page_zip_stat_per_index_mutex_key, "page_zip_stat_per_index_mutex", 0},
{&purge_sys_bh_mutex_key, "purge_sys_bh_mutex", 0},
{&recv_sys_mutex_key, "recv_sys_mutex", 0},
{&recv_writer_mutex_key, "recv_writer_mutex", 0},
{&rseg_mutex_key, "rseg_mutex", 0},
# ifdef UNIV_SYNC_DEBUG
{&rw_lock_debug_mutex_key, "rw_lock_debug_mutex", 0},
# endif /* UNIV_SYNC_DEBUG */
{&rw_lock_list_mutex_key, "rw_lock_list_mutex", 0},
{&rw_lock_mutex_key, "rw_lock_mutex", 0},
{&srv_dict_tmpfile_mutex_key, "srv_dict_tmpfile_mutex", 0},
{&srv_innodb_monitor_mutex_key, "srv_innodb_monitor_mutex", 0},
{&srv_misc_tmpfile_mutex_key, "srv_misc_tmpfile_mutex", 0},
{&srv_monitor_file_mutex_key, "srv_monitor_file_mutex", 0},
# ifdef UNIV_SYNC_DEBUG
{&sync_thread_mutex_key, "sync_thread_mutex", 0},
# endif /* UNIV_SYNC_DEBUG */
{&buf_dblwr_mutex_key, "buf_dblwr_mutex", 0},
{&trx_undo_mutex_key, "trx_undo_mutex", 0},
{&srv_sys_mutex_key, "srv_sys_mutex", 0},
{&lock_sys_mutex_key, "lock_mutex", 0},
{&lock_sys_wait_mutex_key, "lock_wait_mutex", 0},
{&trx_mutex_key, "trx_mutex", 0},
{&srv_sys_tasks_mutex_key, "srv_threads_mutex", 0},
/* mutex with os_fast_mutex_ interfaces */
# ifndef PFS_SKIP_EVENT_MUTEX
{&event_os_mutex_key, "event_os_mutex", 0},
# endif /* PFS_SKIP_EVENT_MUTEX */
{&os_mutex_key, "os_mutex", 0},
#ifndef HAVE_ATOMIC_BUILTINS
{&srv_conc_mutex_key, "srv_conc_mutex", 0},
#endif /* !HAVE_ATOMIC_BUILTINS */
#ifndef HAVE_ATOMIC_BUILTINS_64
{&monitor_mutex_key, "monitor_mutex", 0},
#endif /* !HAVE_ATOMIC_BUILTINS_64 */
{&ut_list_mutex_key, "ut_list_mutex", 0},
{&trx_sys_mutex_key, "trx_sys_mutex", 0},
{&zip_pad_mutex_key, "zip_pad_mutex", 0},
};
# endif /* UNIV_PFS_MUTEX */
# ifdef UNIV_PFS_RWLOCK
/* all_innodb_rwlocks array contains rwlocks that are
performance schema instrumented if "UNIV_PFS_RWLOCK"
is defined */
static PSI_rwlock_info all_innodb_rwlocks[] = {
# ifdef UNIV_LOG_ARCHIVE
{&archive_lock_key, "archive_lock", 0},
# endif /* UNIV_LOG_ARCHIVE */
{&btr_search_latch_key, "btr_search_latch", 0},
# ifndef PFS_SKIP_BUFFER_MUTEX_RWLOCK
{&buf_block_lock_key, "buf_block_lock", 0},
# endif /* !PFS_SKIP_BUFFER_MUTEX_RWLOCK */
# ifdef UNIV_SYNC_DEBUG
{&buf_block_debug_latch_key, "buf_block_debug_latch", 0},
# endif /* UNIV_SYNC_DEBUG */
{&dict_operation_lock_key, "dict_operation_lock", 0},
{&fil_space_latch_key, "fil_space_latch", 0},
{&checkpoint_lock_key, "checkpoint_lock", 0},
{&fts_cache_rw_lock_key, "fts_cache_rw_lock", 0},
{&fts_cache_init_rw_lock_key, "fts_cache_init_rw_lock", 0},
{&trx_i_s_cache_lock_key, "trx_i_s_cache_lock", 0},
{&trx_purge_latch_key, "trx_purge_latch", 0},
{&index_tree_rw_lock_key, "index_tree_rw_lock", 0},
{&index_online_log_key, "index_online_log", 0},
{&dict_table_stats_key, "dict_table_stats", 0},
{&hash_table_rw_lock_key, "hash_table_locks", 0}
};
# endif /* UNIV_PFS_RWLOCK */
# ifdef UNIV_PFS_THREAD
/* all_innodb_threads array contains threads that are
performance schema instrumented if "UNIV_PFS_THREAD"
is defined */
static PSI_thread_info all_innodb_threads[] = {
{&trx_rollback_clean_thread_key, "trx_rollback_clean_thread", 0},
{&io_handler_thread_key, "io_handler_thread", 0},
{&srv_lock_timeout_thread_key, "srv_lock_timeout_thread", 0},
{&srv_error_monitor_thread_key, "srv_error_monitor_thread", 0},
{&srv_monitor_thread_key, "srv_monitor_thread", 0},
{&srv_master_thread_key, "srv_master_thread", 0},
{&srv_purge_thread_key, "srv_purge_thread", 0},
{&buf_page_cleaner_thread_key, "page_cleaner_thread", 0},
{&recv_writer_thread_key, "recv_writer_thread", 0}
};
# endif /* UNIV_PFS_THREAD */
# ifdef UNIV_PFS_IO
/* all_innodb_files array contains the type of files that are
performance schema instrumented if "UNIV_PFS_IO" is defined */
static PSI_file_info all_innodb_files[] = {
{&innodb_file_data_key, "innodb_data_file", 0},
{&innodb_file_log_key, "innodb_log_file", 0},
{&innodb_file_temp_key, "innodb_temp_file", 0}
};
# endif /* UNIV_PFS_IO */
#endif /* HAVE_PSI_INTERFACE */
/** Always normalize table name to lower case on Windows */
#ifdef __WIN__
#define normalize_table_name(norm_name, name) \
normalize_table_name_low(norm_name, name, TRUE)
#else
#define normalize_table_name(norm_name, name) \
normalize_table_name_low(norm_name, name, FALSE)
#endif /* __WIN__ */
/** Set up InnoDB API callback function array */
ib_cb_t innodb_api_cb[] = {
(ib_cb_t) ib_cursor_open_table,
(ib_cb_t) ib_cursor_read_row,
(ib_cb_t) ib_cursor_insert_row,
(ib_cb_t) ib_cursor_delete_row,
(ib_cb_t) ib_cursor_update_row,
(ib_cb_t) ib_cursor_moveto,
(ib_cb_t) ib_cursor_first,
(ib_cb_t) ib_cursor_next,
(ib_cb_t) ib_cursor_last,
(ib_cb_t) ib_cursor_set_match_mode,
(ib_cb_t) ib_sec_search_tuple_create,
(ib_cb_t) ib_clust_read_tuple_create,
(ib_cb_t) ib_tuple_delete,
(ib_cb_t) ib_tuple_copy,
(ib_cb_t) ib_tuple_read_u8,
(ib_cb_t) ib_tuple_write_u8,
(ib_cb_t) ib_tuple_read_u16,
(ib_cb_t) ib_tuple_write_u16,
(ib_cb_t) ib_tuple_read_u32,
(ib_cb_t) ib_tuple_write_u32,
(ib_cb_t) ib_tuple_read_u64,
(ib_cb_t) ib_tuple_write_u64,
(ib_cb_t) ib_tuple_read_i8,
(ib_cb_t) ib_tuple_write_i8,
(ib_cb_t) ib_tuple_read_i16,
(ib_cb_t) ib_tuple_write_i16,
(ib_cb_t) ib_tuple_read_i32,
(ib_cb_t) ib_tuple_write_i32,
(ib_cb_t) ib_tuple_read_i64,
(ib_cb_t) ib_tuple_write_i64,
(ib_cb_t) ib_tuple_get_n_cols,
(ib_cb_t) ib_col_set_value,
(ib_cb_t) ib_col_get_value,
(ib_cb_t) ib_col_get_meta,
(ib_cb_t) ib_trx_begin,
(ib_cb_t) ib_trx_commit,
(ib_cb_t) ib_trx_rollback,
(ib_cb_t) ib_trx_start,
(ib_cb_t) ib_trx_release,
(ib_cb_t) ib_trx_state,
(ib_cb_t) ib_cursor_lock,
(ib_cb_t) ib_cursor_close,
(ib_cb_t) ib_cursor_new_trx,
(ib_cb_t) ib_cursor_reset,
(ib_cb_t) ib_open_table_by_name,
(ib_cb_t) ib_col_get_name,
(ib_cb_t) ib_table_truncate,
(ib_cb_t) ib_cursor_open_index_using_name,
(ib_cb_t) ib_close_thd,
(ib_cb_t) ib_cfg_get_cfg,
(ib_cb_t) ib_cursor_set_memcached_sync,
(ib_cb_t) ib_cursor_set_cluster_access,
(ib_cb_t) ib_cursor_commit_trx,
(ib_cb_t) ib_cfg_trx_level,
(ib_cb_t) ib_tuple_get_n_user_cols,
(ib_cb_t) ib_cursor_set_lock_mode,
(ib_cb_t) ib_cursor_clear_trx,
(ib_cb_t) ib_get_idx_field_name,
(ib_cb_t) ib_trx_get_start_time,
(ib_cb_t) ib_cfg_bk_commit_interval,
(ib_cb_t) ib_cursor_stmt_begin,
(ib_cb_t) ib_trx_read_only
};
/*************************************************************//**
Check whether valid argument given to innodb_ft_*_stopword_table.
This function is registered as a callback with MySQL.
@return 0 for valid stopword table */
static
int
innodb_stopword_table_validate(
/*===========================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to system
variable */
void* save, /*!< out: immediate result
for update function */
struct st_mysql_value* value); /*!< in: incoming string */
/** "GEN_CLUST_INDEX" is the name reserved for InnoDB default
system clustered index when there is no primary key. */
const char innobase_index_reserve_name[] = "GEN_CLUST_INDEX";
/******************************************************************//**
Maps a MySQL trx isolation level code to the InnoDB isolation level code
@return InnoDB isolation level */
static inline
ulint
innobase_map_isolation_level(
/*=========================*/
enum_tx_isolation iso); /*!< in: MySQL isolation level code */
static const char innobase_hton_name[]= "InnoDB";
static MYSQL_THDVAR_BOOL(support_xa, PLUGIN_VAR_OPCMDARG,
"Enable InnoDB support for the XA two-phase commit",
/* check_func */ NULL, /* update_func */ NULL,
/* default */ TRUE);
static MYSQL_THDVAR_BOOL(table_locks, PLUGIN_VAR_OPCMDARG,
"Enable InnoDB locking in LOCK TABLES",
/* check_func */ NULL, /* update_func */ NULL,
/* default */ TRUE);
static MYSQL_THDVAR_BOOL(strict_mode, PLUGIN_VAR_OPCMDARG,
"Use strict mode when evaluating create options.",
NULL, NULL, FALSE);
static MYSQL_THDVAR_BOOL(ft_enable_stopword, PLUGIN_VAR_OPCMDARG,
"Create FTS index with stopword.",
NULL, NULL,
/* default */ TRUE);
static MYSQL_THDVAR_ULONG(lock_wait_timeout, PLUGIN_VAR_RQCMDARG,
"Timeout in seconds an InnoDB transaction may wait for a lock before being rolled back. Values above 100000000 disable the timeout.",
NULL, NULL, 50, 1, 1024 * 1024 * 1024, 0);
static MYSQL_THDVAR_STR(ft_user_stopword_table,
PLUGIN_VAR_OPCMDARG|PLUGIN_VAR_MEMALLOC,
"User supplied stopword table name, effective in the session level.",
innodb_stopword_table_validate, NULL, NULL);
static SHOW_VAR innodb_status_variables[]= {
{"buffer_pool_dump_status",
(char*) &export_vars.innodb_buffer_pool_dump_status, SHOW_CHAR},
{"buffer_pool_load_status",
(char*) &export_vars.innodb_buffer_pool_load_status, SHOW_CHAR},
{"buffer_pool_pages_data",
(char*) &export_vars.innodb_buffer_pool_pages_data, SHOW_LONG},
{"buffer_pool_bytes_data",
(char*) &export_vars.innodb_buffer_pool_bytes_data, SHOW_LONG},
{"buffer_pool_pages_dirty",
(char*) &export_vars.innodb_buffer_pool_pages_dirty, SHOW_LONG},
{"buffer_pool_bytes_dirty",
(char*) &export_vars.innodb_buffer_pool_bytes_dirty, SHOW_LONG},
{"buffer_pool_pages_flushed",
(char*) &export_vars.innodb_buffer_pool_pages_flushed, SHOW_LONG},
{"buffer_pool_pages_free",
(char*) &export_vars.innodb_buffer_pool_pages_free, SHOW_LONG},
#ifdef UNIV_DEBUG
{"buffer_pool_pages_latched",
(char*) &export_vars.innodb_buffer_pool_pages_latched, SHOW_LONG},
#endif /* UNIV_DEBUG */
{"buffer_pool_pages_misc",
(char*) &export_vars.innodb_buffer_pool_pages_misc, SHOW_LONG},
{"buffer_pool_pages_total",
(char*) &export_vars.innodb_buffer_pool_pages_total, SHOW_LONG},
{"buffer_pool_read_ahead_rnd",
(char*) &export_vars.innodb_buffer_pool_read_ahead_rnd, SHOW_LONG},
{"buffer_pool_read_ahead",
(char*) &export_vars.innodb_buffer_pool_read_ahead, SHOW_LONG},
{"buffer_pool_read_ahead_evicted",
(char*) &export_vars.innodb_buffer_pool_read_ahead_evicted, SHOW_LONG},
{"buffer_pool_read_requests",
(char*) &export_vars.innodb_buffer_pool_read_requests, SHOW_LONG},
{"buffer_pool_reads",
(char*) &export_vars.innodb_buffer_pool_reads, SHOW_LONG},
{"buffer_pool_wait_free",
(char*) &export_vars.innodb_buffer_pool_wait_free, SHOW_LONG},
{"buffer_pool_write_requests",
(char*) &export_vars.innodb_buffer_pool_write_requests, SHOW_LONG},
{"data_fsyncs",
(char*) &export_vars.innodb_data_fsyncs, SHOW_LONG},
{"data_pending_fsyncs",
(char*) &export_vars.innodb_data_pending_fsyncs, SHOW_LONG},
{"data_pending_reads",
(char*) &export_vars.innodb_data_pending_reads, SHOW_LONG},
{"data_pending_writes",
(char*) &export_vars.innodb_data_pending_writes, SHOW_LONG},
{"data_read",
(char*) &export_vars.innodb_data_read, SHOW_LONG},
{"data_reads",
(char*) &export_vars.innodb_data_reads, SHOW_LONG},
{"data_writes",
(char*) &export_vars.innodb_data_writes, SHOW_LONG},
{"data_written",
(char*) &export_vars.innodb_data_written, SHOW_LONG},
{"dblwr_pages_written",
(char*) &export_vars.innodb_dblwr_pages_written, SHOW_LONG},
{"dblwr_writes",
(char*) &export_vars.innodb_dblwr_writes, SHOW_LONG},
{"have_atomic_builtins",
(char*) &export_vars.innodb_have_atomic_builtins, SHOW_BOOL},
{"log_waits",
(char*) &export_vars.innodb_log_waits, SHOW_LONG},
{"log_write_requests",
(char*) &export_vars.innodb_log_write_requests, SHOW_LONG},
{"log_writes",
(char*) &export_vars.innodb_log_writes, SHOW_LONG},
{"os_log_fsyncs",
(char*) &export_vars.innodb_os_log_fsyncs, SHOW_LONG},
{"os_log_pending_fsyncs",
(char*) &export_vars.innodb_os_log_pending_fsyncs, SHOW_LONG},
{"os_log_pending_writes",
(char*) &export_vars.innodb_os_log_pending_writes, SHOW_LONG},
{"os_log_written",
(char*) &export_vars.innodb_os_log_written, SHOW_LONGLONG},
{"page_size",
(char*) &export_vars.innodb_page_size, SHOW_LONG},
{"pages_created",
(char*) &export_vars.innodb_pages_created, SHOW_LONG},
{"pages_read",
(char*) &export_vars.innodb_pages_read, SHOW_LONG},
{"pages_written",
(char*) &export_vars.innodb_pages_written, SHOW_LONG},
{"row_lock_current_waits",
(char*) &export_vars.innodb_row_lock_current_waits, SHOW_LONG},
{"row_lock_time",
(char*) &export_vars.innodb_row_lock_time, SHOW_LONGLONG},
{"row_lock_time_avg",
(char*) &export_vars.innodb_row_lock_time_avg, SHOW_LONG},
{"row_lock_time_max",
(char*) &export_vars.innodb_row_lock_time_max, SHOW_LONG},
{"row_lock_waits",
(char*) &export_vars.innodb_row_lock_waits, SHOW_LONG},
{"rows_deleted",
(char*) &export_vars.innodb_rows_deleted, SHOW_LONG},
{"rows_inserted",
(char*) &export_vars.innodb_rows_inserted, SHOW_LONG},
{"rows_read",
(char*) &export_vars.innodb_rows_read, SHOW_LONG},
{"rows_updated",
(char*) &export_vars.innodb_rows_updated, SHOW_LONG},
{"num_open_files",
(char*) &export_vars.innodb_num_open_files, SHOW_LONG},
{"truncated_status_writes",
(char*) &export_vars.innodb_truncated_status_writes, SHOW_LONG},
{"available_undo_logs",
(char*) &export_vars.innodb_available_undo_logs, SHOW_LONG},
#ifdef UNIV_DEBUG
{"purge_trx_id_age",
(char*) &export_vars.innodb_purge_trx_id_age, SHOW_LONG},
{"purge_view_trx_id_age",
(char*) &export_vars.innodb_purge_view_trx_id_age, SHOW_LONG},
#endif /* UNIV_DEBUG */
{NullS, NullS, SHOW_LONG}
};
/************************************************************************//**
Handling the shared INNOBASE_SHARE structure that is needed to provide table
locking. Register the table name if it doesn't exist in the hash table. */
static
INNOBASE_SHARE*
get_share(
/*======*/
const char* table_name); /*!< in: table to lookup */
/************************************************************************//**
Free the shared object that was registered with get_share(). */
static
void
free_share(
/*=======*/
INNOBASE_SHARE* share); /*!< in/own: share to free */
/*****************************************************************//**
Frees a possible InnoDB trx object associated with the current THD.
@return 0 or error number */
static
int
innobase_close_connection(
/*======================*/
handlerton* hton, /*!< in/out: Innodb handlerton */
THD* thd); /*!< in: MySQL thread handle for
which to close the connection */
/*****************************************************************//**
Commits a transaction in an InnoDB database or marks an SQL statement
ended.
@return 0 */
static
int
innobase_commit(
/*============*/
handlerton* hton, /*!< in/out: Innodb handlerton */
THD* thd, /*!< in: MySQL thread handle of the
user for whom the transaction should
be committed */
bool commit_trx); /*!< in: true - commit transaction
false - the current SQL statement
ended */
/*****************************************************************//**
Rolls back a transaction to a savepoint.
@return 0 if success, HA_ERR_NO_SAVEPOINT if no savepoint with the
given name */
static
int
innobase_rollback(
/*==============*/
handlerton* hton, /*!< in/out: Innodb handlerton */
THD* thd, /*!< in: handle to the MySQL thread
of the user whose transaction should
be rolled back */
bool rollback_trx); /*!< in: TRUE - rollback entire
transaction FALSE - rollback the current
statement only */
/*****************************************************************//**
Rolls back a transaction to a savepoint.
@return 0 if success, HA_ERR_NO_SAVEPOINT if no savepoint with the
given name */
static
int
innobase_rollback_to_savepoint(
/*===========================*/
handlerton* hton, /*!< in/out: InnoDB handlerton */
THD* thd, /*!< in: handle to the MySQL thread of
the user whose XA transaction should
be rolled back to savepoint */
void* savepoint); /*!< in: savepoint data */
/*****************************************************************//**
Check whether innodb state allows to safely release MDL locks after
rollback to savepoint.
@return true if it is safe, false if its not safe. */
static
bool
innobase_rollback_to_savepoint_can_release_mdl(
/*===========================================*/
handlerton* hton, /*!< in/out: InnoDB handlerton */
THD* thd); /*!< in: handle to the MySQL thread of
the user whose XA transaction should
be rolled back to savepoint */
/*****************************************************************//**
Sets a transaction savepoint.
@return always 0, that is, always succeeds */
static
int
innobase_savepoint(
/*===============*/
handlerton* hton, /*!< in/out: InnoDB handlerton */
THD* thd, /*!< in: handle to the MySQL thread of
the user's XA transaction for which
we need to take a savepoint */
void* savepoint); /*!< in: savepoint data */
/*****************************************************************//**
Release transaction savepoint name.
@return 0 if success, HA_ERR_NO_SAVEPOINT if no savepoint with the
given name */
static
int
innobase_release_savepoint(
/*=======================*/
handlerton* hton, /*!< in/out: handlerton for Innodb */
THD* thd, /*!< in: handle to the MySQL thread
of the user whose transaction's
savepoint should be released */
void* savepoint); /*!< in: savepoint data */
/************************************************************************//**
Function for constructing an InnoDB table handler instance. */
static
handler*
innobase_create_handler(
/*====================*/
handlerton* hton, /*!< in/out: handlerton for Innodb */
TABLE_SHARE* table,
MEM_ROOT* mem_root);
/** @brief Initialize the default value of innodb_commit_concurrency.
Once InnoDB is running, the innodb_commit_concurrency must not change
from zero to nonzero. (Bug #42101)
The initial default value is 0, and without this extra initialization,
SET GLOBAL innodb_commit_concurrency=DEFAULT would set the parameter
to 0, even if it was initially set to nonzero at the command line
or configuration file. */
static
void
innobase_commit_concurrency_init_default();
/*=======================================*/
/** @brief Initialize the default and max value of innodb_undo_logs.
Once InnoDB is running, the default value and the max value of
innodb_undo_logs must be equal to the available undo logs,
given by srv_available_undo_logs. */
static
void
innobase_undo_logs_init_default_max();
/*==================================*/
/************************************************************//**
Validate the file format name and return its corresponding id.
@return valid file format id */
static
uint
innobase_file_format_name_lookup(
/*=============================*/
const char* format_name); /*!< in: pointer to file format
name */
/************************************************************//**
Validate the file format check config parameters, as a side effect it
sets the srv_max_file_format_at_startup variable.
@return the format_id if valid config value, otherwise, return -1 */
static
int
innobase_file_format_validate_and_set(
/*==================================*/
const char* format_max); /*!< in: parameter value */
/*******************************************************************//**
This function is used to prepare an X/Open XA distributed transaction.
@return 0 or error number */
static
int
innobase_xa_prepare(
/*================*/
handlerton* hton, /*!< in: InnoDB handlerton */
THD* thd, /*!< in: handle to the MySQL thread of
the user whose XA transaction should
be prepared */
bool all); /*!< in: true - prepare transaction
false - the current SQL statement
ended */
/*******************************************************************//**
This function is used to recover X/Open XA distributed transactions.
@return number of prepared transactions stored in xid_list */
static
int
innobase_xa_recover(
/*================*/
handlerton* hton, /*!< in: InnoDB handlerton */
XID* xid_list, /*!< in/out: prepared transactions */
uint len); /*!< in: number of slots in xid_list */
/*******************************************************************//**
This function is used to commit one X/Open XA distributed transaction
which is in the prepared state
@return 0 or error number */
static
int
innobase_commit_by_xid(
/*===================*/
handlerton* hton, /*!< in: InnoDB handlerton */
XID* xid); /*!< in: X/Open XA transaction
identification */
/*******************************************************************//**
This function is used to rollback one X/Open XA distributed transaction
which is in the prepared state
@return 0 or error number */
static
int
innobase_rollback_by_xid(
/*=====================*/
handlerton* hton, /*!< in: InnoDB handlerton */
XID* xid); /*!< in: X/Open XA transaction
identification */
/*******************************************************************//**
Create a consistent view for a cursor based on current transaction
which is created if the corresponding MySQL thread still lacks one.
This consistent view is then used inside of MySQL when accessing records
using a cursor.
@return pointer to cursor view or NULL */
static
void*
innobase_create_cursor_view(
/*========================*/
handlerton* hton, /*!< in: innobase hton */
THD* thd); /*!< in: user thread handle */
/*******************************************************************//**
Set the given consistent cursor view to a transaction which is created
if the corresponding MySQL thread still lacks one. If the given
consistent cursor view is NULL global read view of a transaction is
restored to a transaction read view. */
static
void
innobase_set_cursor_view(
/*=====================*/
handlerton* hton, /*!< in: handlerton of Innodb */
THD* thd, /*!< in: user thread handle */
void* curview); /*!< in: Consistent cursor view to
be set */
/*******************************************************************//**
Close the given consistent cursor view of a transaction and restore
global read view to a transaction read view. Transaction is created if the
corresponding MySQL thread still lacks one. */
static
void
innobase_close_cursor_view(
/*=======================*/
handlerton* hton, /*!< in: handlerton of Innodb */
THD* thd, /*!< in: user thread handle */
void* curview); /*!< in: Consistent read view to be
closed */
/*****************************************************************//**
Removes all tables in the named database inside InnoDB. */
static
void
innobase_drop_database(
/*===================*/
handlerton* hton, /*!< in: handlerton of Innodb */
char* path); /*!< in: database path; inside InnoDB
the name of the last directory in
the path is used as the database name:
for example, in 'mysql/data/test' the
database name is 'test' */
/*******************************************************************//**
Closes an InnoDB database. */
static
int
innobase_end(
/*=========*/
handlerton* hton, /* in: Innodb handlerton */
ha_panic_function type);
/*****************************************************************//**
Creates an InnoDB transaction struct for the thd if it does not yet have one.
Starts a new InnoDB transaction if a transaction is not yet started. And
assigns a new snapshot for a consistent read if the transaction does not yet
have one.
@return 0 */
static
int
innobase_start_trx_and_assign_read_view(
/*====================================*/
handlerton* hton, /* in: Innodb handlerton */
THD* thd); /* in: MySQL thread handle of the
user for whom the transaction should
be committed */
/****************************************************************//**
Flushes InnoDB logs to disk and makes a checkpoint. Really, a commit flushes
the logs, and the name of this function should be innobase_checkpoint.
@return TRUE if error */
static
bool
innobase_flush_logs(
/*================*/
handlerton* hton); /*!< in: InnoDB handlerton */
/************************************************************************//**
Implements the SHOW ENGINE INNODB STATUS command. Sends the output of the
InnoDB Monitor to the client.
@return 0 on success */
static
int
innodb_show_status(
/*===============*/
handlerton* hton, /*!< in: the innodb handlerton */
THD* thd, /*!< in: the MySQL query thread of
the caller */
stat_print_fn* stat_print);
/************************************************************************//**
Return 0 on success and non-zero on failure. Note: the bool return type
seems to be abused here, should be an int. */
static
bool
innobase_show_status(
/*=================*/
handlerton* hton, /*!< in: the innodb handlerton */
THD* thd, /*!< in: the MySQL query thread of
the caller */
stat_print_fn* stat_print,
enum ha_stat_type stat_type);
/*****************************************************************//**
Commits a transaction in an InnoDB database. */
static
void
innobase_commit_low(
/*================*/
trx_t* trx); /*!< in: transaction handle */
/****************************************************************//**
Parse and enable InnoDB monitor counters during server startup.
User can enable monitor counters/groups by specifying
"loose-innodb_monitor_enable = monitor_name1;monitor_name2..."
in server configuration file or at the command line. */
static
void
innodb_enable_monitor_at_startup(
/*=============================*/
char* str); /*!< in: monitor counter enable list */
/*********************************************************************
Normalizes a table name string. A normalized name consists of the
database name catenated to '/' and table name. An example:
test/mytable. On Windows normalization puts both the database name and the
table name always to lower case if "set_lower_case" is set to TRUE. */
static
void
normalize_table_name_low(
/*=====================*/
char* norm_name, /* out: normalized name as a
null-terminated string */
const char* name, /* in: table name string */
ibool set_lower_case); /* in: TRUE if we want to set
name to lower case */
/*************************************************************//**
Check for a valid value of innobase_commit_concurrency.
@return 0 for valid innodb_commit_concurrency */
static
int
innobase_commit_concurrency_validate(
/*=================================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to system
variable */
void* save, /*!< out: immediate result
for update function */
struct st_mysql_value* value) /*!< in: incoming string */
{
long long intbuf;
ulong commit_concurrency;
DBUG_ENTER("innobase_commit_concurrency_validate");
if (value->val_int(value, &intbuf)) {
/* The value is NULL. That is invalid. */
DBUG_RETURN(1);
}
*reinterpret_cast<ulong*>(save) = commit_concurrency
= static_cast<ulong>(intbuf);
/* Allow the value to be updated, as long as it remains zero
or nonzero. */
DBUG_RETURN(!(!commit_concurrency == !innobase_commit_concurrency));
}
/*******************************************************************//**
Function for constructing an InnoDB table handler instance. */
static
handler*
innobase_create_handler(
/*====================*/
handlerton* hton, /*!< in: InnoDB handlerton */
TABLE_SHARE* table,
MEM_ROOT* mem_root)
{
return(new (mem_root) ha_innobase(hton, table));
}
/* General functions */
/*************************************************************//**
Check that a page_size is correct for InnoDB. If correct, set the
associated page_size_shift which is the power of 2 for this page size.
@return an associated page_size_shift if valid, 0 if invalid. */
inline
int
innodb_page_size_validate(
/*======================*/
ulong page_size) /*!< in: Page Size to evaluate */
{
ulong n;
DBUG_ENTER("innodb_page_size_validate");
for (n = UNIV_PAGE_SIZE_SHIFT_MIN;
n <= UNIV_PAGE_SIZE_SHIFT_MAX;
n++) {
if (page_size == (ulong) (1 << n)) {
DBUG_RETURN(n);
}
}
DBUG_RETURN(0);
}
/******************************************************************//**
Returns true if the thread is the replication thread on the slave
server. Used in srv_conc_enter_innodb() to determine if the thread
should be allowed to enter InnoDB - the replication thread is treated
differently than other threads. Also used in
srv_conc_force_exit_innodb().
@return true if thd is the replication thread */
UNIV_INTERN
ibool
thd_is_replication_slave_thread(
/*============================*/
THD* thd) /*!< in: thread handle */
{
return((ibool) thd_slave_thread(thd));
}
/******************************************************************//**
Gets information on the durability property requested by thread.
Used when writing either a prepare or commit record to the log
buffer. @return the durability property. */
UNIV_INTERN
enum durability_properties
thd_requested_durability(
/*=====================*/
const THD* thd) /*!< in: thread handle */
{
return(thd_get_durability_property(thd));
}
/******************************************************************//**
Returns true if transaction should be flagged as read-only.
@return true if the thd is marked as read-only */
UNIV_INTERN
ibool
thd_trx_is_read_only(
/*=================*/
THD* thd) /*!< in: thread handle */
{
return(thd != 0 && thd_tx_is_read_only(thd));
}
/******************************************************************//**
Check if the transaction is an auto-commit transaction. TRUE also
implies that it is a SELECT (read-only) transaction.
@return true if the transaction is an auto commit read-only transaction. */
UNIV_INTERN
ibool
thd_trx_is_auto_commit(
/*===================*/
THD* thd) /*!< in: thread handle, can be NULL */
{
return(thd != NULL
&& !thd_test_options(
thd,
OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)
&& thd_is_select(thd));
}
/******************************************************************//**
Save some CPU by testing the value of srv_thread_concurrency in inline
functions. */
static inline
void
innobase_srv_conc_enter_innodb(
/*===========================*/
trx_t* trx) /*!< in: transaction handle */
{
if (srv_thread_concurrency) {
if (trx->n_tickets_to_enter_innodb > 0) {
/* If trx has 'free tickets' to enter the engine left,
then use one such ticket */
--trx->n_tickets_to_enter_innodb;
} else if (trx->mysql_thd != NULL
&& thd_is_replication_slave_thread(trx->mysql_thd)) {
UT_WAIT_FOR(
srv_conc_get_active_threads()
< srv_thread_concurrency,
srv_replication_delay * 1000);
} else {
srv_conc_enter_innodb(trx);
}
}
}
/******************************************************************//**
Note that the thread wants to leave InnoDB only if it doesn't have
any spare tickets. */
static inline
void
innobase_srv_conc_exit_innodb(
/*==========================*/
trx_t* trx) /*!< in: transaction handle */
{
#ifdef UNIV_SYNC_DEBUG
ut_ad(!sync_thread_levels_nonempty_trx(trx->has_search_latch));
#endif /* UNIV_SYNC_DEBUG */
/* This is to avoid making an unnecessary function call. */
if (trx->declared_to_be_inside_innodb
&& trx->n_tickets_to_enter_innodb == 0) {
srv_conc_force_exit_innodb(trx);
}
}
/******************************************************************//**
Force a thread to leave InnoDB even if it has spare tickets. */
static inline
void
innobase_srv_conc_force_exit_innodb(
/*================================*/
trx_t* trx) /*!< in: transaction handle */
{
#ifdef UNIV_SYNC_DEBUG
ut_ad(!sync_thread_levels_nonempty_trx(trx->has_search_latch));
#endif /* UNIV_SYNC_DEBUG */
/* This is to avoid making an unnecessary function call. */
if (trx->declared_to_be_inside_innodb) {
srv_conc_force_exit_innodb(trx);
}
}
/******************************************************************//**
Returns the NUL terminated value of glob_hostname.
@return pointer to glob_hostname. */
UNIV_INTERN
const char*
server_get_hostname()
/*=================*/
{
return(glob_hostname);
}
/******************************************************************//**
Returns true if the transaction this thread is processing has edited
non-transactional tables. Used by the deadlock detector when deciding
which transaction to rollback in case of a deadlock - we try to avoid
rolling back transactions that have edited non-transactional tables.
@return true if non-transactional tables have been edited */
UNIV_INTERN
ibool
thd_has_edited_nontrans_tables(
/*===========================*/
THD* thd) /*!< in: thread handle */
{
return((ibool) thd_non_transactional_update(thd));
}
/******************************************************************//**
Returns true if the thread is executing a SELECT statement.
@return true if thd is executing SELECT */
UNIV_INTERN
ibool
thd_is_select(
/*==========*/
const THD* thd) /*!< in: thread handle */
{
return(thd_sql_command(thd) == SQLCOM_SELECT);
}
/******************************************************************//**
Returns true if the thread supports XA,
global value of innodb_supports_xa if thd is NULL.
@return true if thd has XA support */
UNIV_INTERN
ibool
thd_supports_xa(
/*============*/
THD* thd) /*!< in: thread handle, or NULL to query
the global innodb_supports_xa */
{
return(THDVAR(thd, support_xa));
}
/******************************************************************//**
Returns the lock wait timeout for the current connection.
@return the lock wait timeout, in seconds */
UNIV_INTERN
ulong
thd_lock_wait_timeout(
/*==================*/
THD* thd) /*!< in: thread handle, or NULL to query
the global innodb_lock_wait_timeout */
{
/* According to <mysql/plugin.h>, passing thd == NULL
returns the global value of the session variable. */
return(THDVAR(thd, lock_wait_timeout));
}
/******************************************************************//**
Set the time waited for the lock for the current query. */
UNIV_INTERN
void
thd_set_lock_wait_time(
/*===================*/
THD* thd, /*!< in/out: thread handle */
ulint value) /*!< in: time waited for the lock */
{
if (thd) {
thd_storage_lock_wait(thd, value);
}
}
/********************************************************************//**
Obtain the InnoDB transaction of a MySQL thread.
@return reference to transaction pointer */
__attribute__((warn_unused_result, nonnull))
static inline
trx_t*&
thd_to_trx(
/*=======*/
THD* thd) /*!< in: MySQL thread */
{
return(*(trx_t**) thd_ha_data(thd, innodb_hton_ptr));
}
/********************************************************************//**
Call this function when mysqld passes control to the client. That is to
avoid deadlocks on the adaptive hash S-latch possibly held by thd. For more
documentation, see handler.cc.
@return 0 */
static
int
innobase_release_temporary_latches(
/*===============================*/
handlerton* hton, /*!< in: handlerton */
THD* thd) /*!< in: MySQL thread */
{
DBUG_ASSERT(hton == innodb_hton_ptr);
if (!innodb_inited) {
return(0);
}
trx_t* trx = thd_to_trx(thd);
if (trx != NULL) {
trx_search_latch_release_if_reserved(trx);
}
return(0);
}
/********************************************************************//**
Increments innobase_active_counter and every INNOBASE_WAKE_INTERVALth
time calls srv_active_wake_master_thread. This function should be used
when a single database operation may introduce a small need for
server utility activity, like checkpointing. */
static inline
void
innobase_active_small(void)
/*=======================*/
{
innobase_active_counter++;
if ((innobase_active_counter % INNOBASE_WAKE_INTERVAL) == 0) {
srv_active_wake_master_thread();
}
}
/********************************************************************//**
Converts an InnoDB error code to a MySQL error code and also tells to MySQL
about a possible transaction rollback inside InnoDB caused by a lock wait
timeout or a deadlock.
@return MySQL error code */
static
int
convert_error_code_to_mysql(
/*========================*/
dberr_t error, /*!< in: InnoDB error code */
ulint flags, /*!< in: InnoDB table flags, or 0 */
THD* thd) /*!< in: user thread handle or NULL */
{
switch (error) {
case DB_SUCCESS:
return(0);
case DB_INTERRUPTED:
my_error(ER_QUERY_INTERRUPTED, MYF(0));
return(-1);
case DB_FOREIGN_EXCEED_MAX_CASCADE:
ut_ad(thd);
push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
HA_ERR_ROW_IS_REFERENCED,
"InnoDB: Cannot delete/update "
"rows with cascading foreign key "
"constraints that exceed max "
"depth of %d. Please "
"drop extra constraints and try "
"again", DICT_FK_MAX_RECURSIVE_LOAD);
/* fall through */
case DB_ERROR:
default:
return(-1); /* unspecified error */
case DB_DUPLICATE_KEY:
/* Be cautious with returning this error, since
mysql could re-enter the storage layer to get
duplicated key info, the operation requires a
valid table handle and/or transaction information,
which might not always be available in the error
handling stage. */
return(HA_ERR_FOUND_DUPP_KEY);
case DB_READ_ONLY:
if(srv_force_recovery) {
return(HA_ERR_INNODB_FORCED_RECOVERY);
}
return(HA_ERR_TABLE_READONLY);
case DB_FOREIGN_DUPLICATE_KEY:
return(HA_ERR_FOREIGN_DUPLICATE_KEY);
case DB_MISSING_HISTORY:
return(HA_ERR_TABLE_DEF_CHANGED);
case DB_RECORD_NOT_FOUND:
return(HA_ERR_NO_ACTIVE_RECORD);
case DB_DEADLOCK:
/* Since we rolled back the whole transaction, we must
tell it also to MySQL so that MySQL knows to empty the
cached binlog for this transaction */
if (thd) {
thd_mark_transaction_to_rollback(thd, TRUE);
}
return(HA_ERR_LOCK_DEADLOCK);
case DB_LOCK_WAIT_TIMEOUT:
/* Starting from 5.0.13, we let MySQL just roll back the
latest SQL statement in a lock wait timeout. Previously, we
rolled back the whole transaction. */
if (thd) {
thd_mark_transaction_to_rollback(
thd, (bool) row_rollback_on_timeout);
}
return(HA_ERR_LOCK_WAIT_TIMEOUT);
case DB_NO_REFERENCED_ROW:
return(HA_ERR_NO_REFERENCED_ROW);
case DB_ROW_IS_REFERENCED:
return(HA_ERR_ROW_IS_REFERENCED);
case DB_CANNOT_ADD_CONSTRAINT:
case DB_CHILD_NO_INDEX:
case DB_PARENT_NO_INDEX:
return(HA_ERR_CANNOT_ADD_FOREIGN);
case DB_CANNOT_DROP_CONSTRAINT:
return(HA_ERR_ROW_IS_REFERENCED); /* TODO: This is a bit
misleading, a new MySQL error
code should be introduced */
case DB_CORRUPTION:
return(HA_ERR_CRASHED);
case DB_OUT_OF_FILE_SPACE:
return(HA_ERR_RECORD_FILE_FULL);
case DB_TEMP_FILE_WRITE_FAILURE:
return(HA_ERR_TEMP_FILE_WRITE_FAILURE);
case DB_TABLE_IN_FK_CHECK:
return(HA_ERR_TABLE_IN_FK_CHECK);
case DB_TABLE_IS_BEING_USED:
return(HA_ERR_WRONG_COMMAND);
case DB_TABLESPACE_DELETED:
case DB_TABLE_NOT_FOUND:
return(HA_ERR_NO_SUCH_TABLE);
case DB_TABLESPACE_NOT_FOUND:
return(HA_ERR_NO_SUCH_TABLE);
case DB_TOO_BIG_RECORD: {
/* If prefix is true then a 768-byte prefix is stored
locally for BLOB fields. Refer to dict_table_get_format() */
bool prefix = (dict_tf_get_format(flags) == UNIV_FORMAT_A);
my_printf_error(ER_TOO_BIG_ROWSIZE,
"Row size too large (> %lu). Changing some columns "
"to TEXT or BLOB %smay help. In current row "
"format, BLOB prefix of %d bytes is stored inline.",
MYF(0),
page_get_free_space_of_empty(flags &
DICT_TF_COMPACT) / 2,
prefix ? "or using ROW_FORMAT=DYNAMIC "
"or ROW_FORMAT=COMPRESSED ": "",
prefix ? DICT_MAX_FIXED_COL_LEN : 0);
return(HA_ERR_TO_BIG_ROW);
}
case DB_TOO_BIG_FOR_REDO:
my_printf_error(ER_TOO_BIG_ROWSIZE, "%s" , MYF(0),
"The size of BLOB/TEXT data inserted"
" in one transaction is greater than"
" 10% of redo log size. Increase the"
" redo log size using innodb_log_file_size.");
return(HA_ERR_TO_BIG_ROW);
case DB_TOO_BIG_INDEX_COL:
my_error(ER_INDEX_COLUMN_TOO_LONG, MYF(0),
DICT_MAX_FIELD_LEN_BY_FORMAT_FLAG(flags));
return(HA_ERR_INDEX_COL_TOO_LONG);
case DB_NO_SAVEPOINT:
return(HA_ERR_NO_SAVEPOINT);
case DB_LOCK_TABLE_FULL:
/* Since we rolled back the whole transaction, we must
tell it also to MySQL so that MySQL knows to empty the
cached binlog for this transaction */
if (thd) {
thd_mark_transaction_to_rollback(thd, TRUE);
}
return(HA_ERR_LOCK_TABLE_FULL);
case DB_FTS_INVALID_DOCID:
return(HA_FTS_INVALID_DOCID);
case DB_FTS_EXCEED_RESULT_CACHE_LIMIT:
return(HA_ERR_FTS_EXCEED_RESULT_CACHE_LIMIT);
case DB_TOO_MANY_CONCURRENT_TRXS:
return(HA_ERR_TOO_MANY_CONCURRENT_TRXS);
case DB_UNSUPPORTED:
return(HA_ERR_UNSUPPORTED);
case DB_INDEX_CORRUPT:
return(HA_ERR_INDEX_CORRUPT);
case DB_UNDO_RECORD_TOO_BIG:
return(HA_ERR_UNDO_REC_TOO_BIG);
case DB_OUT_OF_MEMORY:
return(HA_ERR_OUT_OF_MEM);
case DB_TABLESPACE_EXISTS:
return(HA_ERR_TABLESPACE_EXISTS);
case DB_IDENTIFIER_TOO_LONG:
return(HA_ERR_INTERNAL_ERROR);
case DB_FTS_TOO_MANY_WORDS_IN_PHRASE:
return(HA_ERR_FTS_TOO_MANY_WORDS_IN_PHRASE);
}
}
/*************************************************************//**
Prints info of a THD object (== user session thread) to the given file. */
UNIV_INTERN
void
innobase_mysql_print_thd(
/*=====================*/
FILE* f, /*!< in: output stream */
THD* thd, /*!< in: MySQL THD object */
uint max_query_len) /*!< in: max query length to print, or 0 to
use the default max length */
{
char buffer[1024];
fputs(thd_security_context(thd, buffer, sizeof buffer,
max_query_len), f);
putc('\n', f);
}
/******************************************************************//**
Get the error message format string.
@return the format string or 0 if not found. */
UNIV_INTERN
const char*
innobase_get_err_msg(
/*=================*/
int error_code) /*!< in: MySQL error code */
{
return(my_get_err_msg(error_code));
}
/******************************************************************//**
Get the variable length bounds of the given character set. */
UNIV_INTERN
void
innobase_get_cset_width(
/*====================*/
ulint cset, /*!< in: MySQL charset-collation code */
ulint* mbminlen, /*!< out: minimum length of a char (in bytes) */
ulint* mbmaxlen) /*!< out: maximum length of a char (in bytes) */
{
CHARSET_INFO* cs;
ut_ad(cset <= MAX_CHAR_COLL_NUM);
ut_ad(mbminlen);
ut_ad(mbmaxlen);
cs = all_charsets[cset];
if (cs) {
*mbminlen = cs->mbminlen;
*mbmaxlen = cs->mbmaxlen;
ut_ad(*mbminlen < DATA_MBMAX);
ut_ad(*mbmaxlen < DATA_MBMAX);
} else {
THD* thd = current_thd;
if (thd && thd_sql_command(thd) == SQLCOM_DROP_TABLE) {
/* Fix bug#46256: allow tables to be dropped if the
collation is not found, but issue a warning. */
if ((log_warnings)
&& (cset != 0)){
sql_print_warning(
"Unknown collation #%lu.", cset);
}
} else {
ut_a(cset == 0);
}
*mbminlen = *mbmaxlen = 0;
}
}
/******************************************************************//**
Converts an identifier to a table name. */
UNIV_INTERN
void
innobase_convert_from_table_id(
/*===========================*/
struct charset_info_st* cs, /*!< in: the 'from' character set */
char* to, /*!< out: converted identifier */
const char* from, /*!< in: identifier to convert */
ulint len) /*!< in: length of 'to', in bytes */
{
uint errors;
strconvert(cs, from, &my_charset_filename, to, (uint) len, &errors);
}
/**********************************************************************
Check if the length of the identifier exceeds the maximum allowed.
return true when length of identifier is too long. */
UNIV_INTERN
my_bool
innobase_check_identifier_length(
/*=============================*/
const char* id) /* in: FK identifier to check excluding the
database portion. */
{
int well_formed_error = 0;
CHARSET_INFO *cs = system_charset_info;
DBUG_ENTER("innobase_check_identifier_length");
size_t len = cs->cset->well_formed_len(
cs, id, id + strlen(id),
NAME_CHAR_LEN, &well_formed_error);
if (well_formed_error || len == NAME_CHAR_LEN) {
my_error(ER_TOO_LONG_IDENT, MYF(0), id);
DBUG_RETURN(true);
}
DBUG_RETURN(false);
}
/******************************************************************//**
Converts an identifier to UTF-8. */
UNIV_INTERN
void
innobase_convert_from_id(
/*=====================*/
struct charset_info_st* cs, /*!< in: the 'from' character set */
char* to, /*!< out: converted identifier */
const char* from, /*!< in: identifier to convert */
ulint len) /*!< in: length of 'to', in bytes */
{
uint errors;
strconvert(cs, from, system_charset_info, to, (uint) len, &errors);
}
/******************************************************************//**
Compares NUL-terminated UTF-8 strings case insensitively.
@return 0 if a=b, <0 if a<b, >1 if a>b */
UNIV_INTERN
int
innobase_strcasecmp(
/*================*/
const char* a, /*!< in: first string to compare */
const char* b) /*!< in: second string to compare */
{
if (!a) {
if (!b) {
return(0);
} else {
return(-1);
}
} else if (!b) {
return(1);
}
return(my_strcasecmp(system_charset_info, a, b));
}
/******************************************************************//**
Compares NUL-terminated UTF-8 strings case insensitively. The
second string contains wildcards.
@return 0 if a match is found, 1 if not */
UNIV_INTERN
int
innobase_wildcasecmp(
/*=================*/
const char* a, /*!< in: string to compare */
const char* b) /*!< in: wildcard string to compare */
{
return(wild_case_compare(system_charset_info, a, b));
}
/******************************************************************//**
Strip dir name from a full path name and return only the file name
@return file name or "null" if no file name */
UNIV_INTERN
const char*
innobase_basename(
/*==============*/
const char* path_name) /*!< in: full path name */
{
const char* name = base_name(path_name);
return((name) ? name : "null");
}
/******************************************************************//**
Makes all characters in a NUL-terminated UTF-8 string lower case. */
UNIV_INTERN
void
innobase_casedn_str(
/*================*/
char* a) /*!< in/out: string to put in lower case */
{
my_casedn_str(system_charset_info, a);
}
/**********************************************************************//**
Determines the connection character set.
@return connection character set */
UNIV_INTERN
struct charset_info_st*
innobase_get_charset(
/*=================*/
THD* mysql_thd) /*!< in: MySQL thread handle */
{
return(thd_charset(mysql_thd));
}
/**********************************************************************//**
Determines the current SQL statement.
@return SQL statement string */
UNIV_INTERN
const char*
innobase_get_stmt(
/*==============*/
THD* thd, /*!< in: MySQL thread handle */
size_t* length) /*!< out: length of the SQL statement */
{
LEX_STRING* stmt;
stmt = thd_query_string(thd);
*length = stmt->length;
return(stmt->str);
}
/**********************************************************************//**
Get the current setting of the table_def_size global parameter. We do
a dirty read because for one there is no synchronization object and
secondly there is little harm in doing so even if we get a torn read.
@return value of table_def_size */
UNIV_INTERN
ulint
innobase_get_table_cache_size(void)
/*===============================*/
{
return(table_def_size);
}
/**********************************************************************//**
Get the current setting of the lower_case_table_names global parameter from
mysqld.cc. We do a dirty read because for one there is no synchronization
object and secondly there is little harm in doing so even if we get a torn
read.
@return value of lower_case_table_names */
UNIV_INTERN
ulint
innobase_get_lower_case_table_names(void)
/*=====================================*/
{
return(lower_case_table_names);
}
/*********************************************************************//**
Creates a temporary file.
@return temporary file descriptor, or < 0 on error */
UNIV_INTERN
int
innobase_mysql_tmpfile(void)
/*========================*/
{
int fd2 = -1;
File fd;
DBUG_EXECUTE_IF(
"innobase_tmpfile_creation_failure",
return(-1);
);
fd = mysql_tmpfile("ib");
if (fd >= 0) {
/* Copy the file descriptor, so that the additional resources
allocated by create_temp_file() can be freed by invoking
my_close().
Because the file descriptor returned by this function
will be passed to fdopen(), it will be closed by invoking
fclose(), which in turn will invoke close() instead of
my_close(). */
#ifdef _WIN32
/* Note that on Windows, the integer returned by mysql_tmpfile
has no relation to C runtime file descriptor. Here, we need
to call my_get_osfhandle to get the HANDLE and then convert it
to C runtime filedescriptor. */
{
HANDLE hFile = my_get_osfhandle(fd);
HANDLE hDup;
BOOL bOK = DuplicateHandle(
GetCurrentProcess(),
hFile, GetCurrentProcess(),
&hDup, 0, FALSE, DUPLICATE_SAME_ACCESS);
if (bOK) {
fd2 = _open_osfhandle((intptr_t) hDup, 0);
} else {
my_osmaperr(GetLastError());
fd2 = -1;
}
}
#else
fd2 = dup(fd);
#endif
if (fd2 < 0) {
char errbuf[MYSYS_STRERROR_SIZE];
DBUG_PRINT("error",("Got error %d on dup",fd2));
my_errno=errno;
my_error(EE_OUT_OF_FILERESOURCES,
MYF(ME_BELL+ME_WAITTANG),
"ib*", my_errno,
my_strerror(errbuf, sizeof(errbuf), my_errno));
}
my_close(fd, MYF(MY_WME));
}
return(fd2);
}
/*********************************************************************//**
Wrapper around MySQL's copy_and_convert function.
@return number of bytes copied to 'to' */
UNIV_INTERN
ulint
innobase_convert_string(
/*====================*/
void* to, /*!< out: converted string */
ulint to_length, /*!< in: number of bytes reserved
for the converted string */
CHARSET_INFO* to_cs, /*!< in: character set to convert to */
const void* from, /*!< in: string to convert */
ulint from_length, /*!< in: number of bytes to convert */
CHARSET_INFO* from_cs, /*!< in: character set to convert
from */
uint* errors) /*!< out: number of errors encountered
during the conversion */
{
return(copy_and_convert(
(char*) to, (uint32) to_length, to_cs,
(const char*) from, (uint32) from_length, from_cs,
errors));
}
/*******************************************************************//**
Formats the raw data in "data" (in InnoDB on-disk format) that is of
type DATA_(CHAR|VARCHAR|MYSQL|VARMYSQL) using "charset_coll" and writes
the result to "buf". The result is converted to "system_charset_info".
Not more than "buf_size" bytes are written to "buf".
The result is always NUL-terminated (provided buf_size > 0) and the
number of bytes that were written to "buf" is returned (including the
terminating NUL).
@return number of bytes that were written */
UNIV_INTERN
ulint
innobase_raw_format(
/*================*/
const char* data, /*!< in: raw data */
ulint data_len, /*!< in: raw data length
in bytes */
ulint charset_coll, /*!< in: charset collation */
char* buf, /*!< out: output buffer */
ulint buf_size) /*!< in: output buffer size
in bytes */
{
/* XXX we use a hard limit instead of allocating
but_size bytes from the heap */
CHARSET_INFO* data_cs;
char buf_tmp[8192];
ulint buf_tmp_used;
uint num_errors;
data_cs = all_charsets[charset_coll];
buf_tmp_used = innobase_convert_string(buf_tmp, sizeof(buf_tmp),
system_charset_info,
data, data_len, data_cs,
&num_errors);
return(ut_str_sql_format(buf_tmp, buf_tmp_used, buf, buf_size));
}
/*********************************************************************//**
Compute the next autoinc value.
For MySQL replication the autoincrement values can be partitioned among
the nodes. The offset is the start or origin of the autoincrement value
for a particular node. For n nodes the increment will be n and the offset
will be in the interval [1, n]. The formula tries to allocate the next
value for a particular node.
Note: This function is also called with increment set to the number of
values we want to reserve for multi-value inserts e.g.,
INSERT INTO T VALUES(), (), ();
innobase_next_autoinc() will be called with increment set to 3 where
autoinc_lock_mode != TRADITIONAL because we want to reserve 3 values for
the multi-value INSERT above.
@return the next value */
UNIV_INTERN
ulonglong
innobase_next_autoinc(
/*==================*/
ulonglong current, /*!< in: Current value */
ulonglong need, /*!< in: count of values needed */
ulonglong step, /*!< in: AUTOINC increment step */
ulonglong offset, /*!< in: AUTOINC offset */
ulonglong max_value) /*!< in: max value for type */
{
ulonglong next_value;
ulonglong block = need * step;
/* Should never be 0. */
ut_a(need > 0);
ut_a(block > 0);
ut_a(max_value > 0);
/* According to MySQL documentation, if the offset is greater than
the step then the offset is ignored. */
if (offset > block) {
offset = 0;
}
/* Check for overflow. Current can be > max_value if the value is
in reality a negative value.The visual studio compilers converts
large double values automatically into unsigned long long datatype
maximum value */
if (block >= max_value
|| offset > max_value
|| current >= max_value
|| max_value - offset <= offset) {
next_value = max_value;
} else {
ut_a(max_value > current);
ulonglong free = max_value - current;
if (free < offset || free - offset <= block) {
next_value = max_value;
} else {
next_value = 0;
}
}
if (next_value == 0) {
ulonglong next;
if (current > offset) {
next = (current - offset) / step;
} else {
next = (offset - current) / step;
}
ut_a(max_value > next);
next_value = next * step;
/* Check for multiplication overflow. */
ut_a(next_value >= next);
ut_a(max_value > next_value);
/* Check for overflow */
if (max_value - next_value >= block) {
next_value += block;
if (max_value - next_value >= offset) {
next_value += offset;
} else {
next_value = max_value;
}
} else {
next_value = max_value;
}
}
ut_a(next_value != 0);
ut_a(next_value <= max_value);
return(next_value);
}
/*********************************************************************//**
Initializes some fields in an InnoDB transaction object. */
static
void
innobase_trx_init(
/*==============*/
THD* thd, /*!< in: user thread handle */
trx_t* trx) /*!< in/out: InnoDB transaction handle */
{
DBUG_ENTER("innobase_trx_init");
DBUG_ASSERT(EQ_CURRENT_THD(thd));
DBUG_ASSERT(thd == trx->mysql_thd);
trx->check_foreigns = !thd_test_options(
thd, OPTION_NO_FOREIGN_KEY_CHECKS);
trx->check_unique_secondary = !thd_test_options(
thd, OPTION_RELAXED_UNIQUE_CHECKS);
DBUG_VOID_RETURN;
}
/*********************************************************************//**
Allocates an InnoDB transaction for a MySQL handler object for DML.
@return InnoDB transaction handle */
UNIV_INTERN
trx_t*
innobase_trx_allocate(
/*==================*/
THD* thd) /*!< in: user thread handle */
{
trx_t* trx;
DBUG_ENTER("innobase_trx_allocate");
DBUG_ASSERT(thd != NULL);
DBUG_ASSERT(EQ_CURRENT_THD(thd));
trx = trx_allocate_for_mysql();
trx->mysql_thd = thd;
innobase_trx_init(thd, trx);
DBUG_RETURN(trx);
}
/*********************************************************************//**
Gets the InnoDB transaction handle for a MySQL handler object, creates
an InnoDB transaction struct if the corresponding MySQL thread struct still
lacks one.
@return InnoDB transaction handle */
static inline
trx_t*
check_trx_exists(
/*=============*/
THD* thd) /*!< in: user thread handle */
{
trx_t*& trx = thd_to_trx(thd);
ut_ad(EQ_CURRENT_THD(thd));
if (trx == NULL) {
trx = innobase_trx_allocate(thd);
} else if (UNIV_UNLIKELY(trx->magic_n != TRX_MAGIC_N)) {
mem_analyze_corruption(trx);
ut_error;
}
innobase_trx_init(thd, trx);
return(trx);
}
/*********************************************************************//**
Note that a transaction has been registered with MySQL.
@return true if transaction is registered with MySQL 2PC coordinator */
static inline
bool
trx_is_registered_for_2pc(
/*=========================*/
const trx_t* trx) /* in: transaction */
{
return(trx->is_registered == 1);
}
/*********************************************************************//**
Note that a transaction has been registered with MySQL 2PC coordinator. */
static inline
void
trx_register_for_2pc(
/*==================*/
trx_t* trx) /* in: transaction */
{
trx->is_registered = 1;
ut_ad(trx->owns_prepare_mutex == 0);
}
/*********************************************************************//**
Note that a transaction has been deregistered. */
static inline
void
trx_deregister_from_2pc(
/*====================*/
trx_t* trx) /* in: transaction */
{
trx->is_registered = 0;
trx->owns_prepare_mutex = 0;
}
/*********************************************************************//**
Check if transaction is started.
@reutrn true if transaction is in state started */
static
bool
trx_is_started(
/*===========*/
trx_t* trx) /* in: transaction */
{
return(trx->state != TRX_STATE_NOT_STARTED);
}
/*********************************************************************//**
Copy table flags from MySQL's HA_CREATE_INFO into an InnoDB table object.
Those flags are stored in .frm file and end up in the MySQL table object,
but are frequently used inside InnoDB so we keep their copies into the
InnoDB table object. */
UNIV_INTERN
void
innobase_copy_frm_flags_from_create_info(
/*=====================================*/
dict_table_t* innodb_table, /*!< in/out: InnoDB table */
const HA_CREATE_INFO* create_info) /*!< in: create info */
{
ibool ps_on;
ibool ps_off;
if (dict_table_is_temporary(innodb_table)) {
/* Temp tables do not use persistent stats. */
ps_on = FALSE;
ps_off = TRUE;
} else {
ps_on = create_info->table_options
& HA_OPTION_STATS_PERSISTENT;
ps_off = create_info->table_options
& HA_OPTION_NO_STATS_PERSISTENT;
}
dict_stats_set_persistent(innodb_table, ps_on, ps_off);
dict_stats_auto_recalc_set(
innodb_table,
create_info->stats_auto_recalc == HA_STATS_AUTO_RECALC_ON,
create_info->stats_auto_recalc == HA_STATS_AUTO_RECALC_OFF);
innodb_table->stats_sample_pages = create_info->stats_sample_pages;
}
/*********************************************************************//**
Copy table flags from MySQL's TABLE_SHARE into an InnoDB table object.
Those flags are stored in .frm file and end up in the MySQL table object,
but are frequently used inside InnoDB so we keep their copies into the
InnoDB table object. */
UNIV_INTERN
void
innobase_copy_frm_flags_from_table_share(
/*=====================================*/
dict_table_t* innodb_table, /*!< in/out: InnoDB table */
const TABLE_SHARE* table_share) /*!< in: table share */
{
ibool ps_on;
ibool ps_off;
if (dict_table_is_temporary(innodb_table)) {
/* Temp tables do not use persistent stats */
ps_on = FALSE;
ps_off = TRUE;
} else {
ps_on = table_share->db_create_options
& HA_OPTION_STATS_PERSISTENT;
ps_off = table_share->db_create_options
& HA_OPTION_NO_STATS_PERSISTENT;
}
dict_stats_set_persistent(innodb_table, ps_on, ps_off);
dict_stats_auto_recalc_set(
innodb_table,
table_share->stats_auto_recalc == HA_STATS_AUTO_RECALC_ON,
table_share->stats_auto_recalc == HA_STATS_AUTO_RECALC_OFF);
innodb_table->stats_sample_pages = table_share->stats_sample_pages;
}
/*********************************************************************//**
Construct ha_innobase handler. */
UNIV_INTERN
ha_innobase::ha_innobase(
/*=====================*/
handlerton* hton,
TABLE_SHARE* table_arg)
:handler(hton, table_arg),
int_table_flags(HA_REC_NOT_IN_SEQ |
HA_NULL_IN_KEY |
HA_CAN_INDEX_BLOBS |
HA_CAN_SQL_HANDLER |
HA_PRIMARY_KEY_REQUIRED_FOR_POSITION |
HA_PRIMARY_KEY_IN_READ_INDEX |
HA_BINLOG_ROW_CAPABLE |
HA_CAN_GEOMETRY | HA_PARTIAL_COLUMN_READ |
HA_TABLE_SCAN_ON_INDEX | HA_CAN_FULLTEXT |
HA_CAN_FULLTEXT_EXT | HA_CAN_EXPORT),
start_of_scan(0),
num_write_row(0)
{}
/*********************************************************************//**
Destruct ha_innobase handler. */
UNIV_INTERN
ha_innobase::~ha_innobase()
/*======================*/
{
}
/*********************************************************************//**
Updates the user_thd field in a handle and also allocates a new InnoDB
transaction handle if needed, and updates the transaction fields in the
prebuilt struct. */
UNIV_INTERN inline
void
ha_innobase::update_thd(
/*====================*/
THD* thd) /*!< in: thd to use the handle */
{
trx_t* trx;
DBUG_ENTER("ha_innobase::update_thd");
DBUG_PRINT("ha_innobase::update_thd", ("user_thd: %p -> %p",
user_thd, thd));
/* The table should have been opened in ha_innobase::open(). */
DBUG_ASSERT(prebuilt->table->n_ref_count > 0);
trx = check_trx_exists(thd);
if (prebuilt->trx != trx) {
row_update_prebuilt_trx(prebuilt, trx);
}
user_thd = thd;
DBUG_VOID_RETURN;
}
/*********************************************************************//**
Updates the user_thd field in a handle and also allocates a new InnoDB
transaction handle if needed, and updates the transaction fields in the
prebuilt struct. */
UNIV_INTERN
void
ha_innobase::update_thd()
/*=====================*/
{
THD* thd = ha_thd();
ut_ad(EQ_CURRENT_THD(thd));
update_thd(thd);
}
/*********************************************************************//**
Registers an InnoDB transaction with the MySQL 2PC coordinator, so that
the MySQL XA code knows to call the InnoDB prepare and commit, or rollback
for the transaction. This MUST be called for every transaction for which
the user may call commit or rollback. Calling this several times to register
the same transaction is allowed, too. This function also registers the
current SQL statement. */
static inline
void
innobase_register_trx(
/*==================*/
handlerton* hton, /* in: Innobase handlerton */
THD* thd, /* in: MySQL thd (connection) object */
trx_t* trx) /* in: transaction to register */
{
trans_register_ha(thd, FALSE, hton);
if (!trx_is_registered_for_2pc(trx)
&& thd_test_options(thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) {
trans_register_ha(thd, TRUE, hton);
}
trx_register_for_2pc(trx);
}
/* BACKGROUND INFO: HOW THE MYSQL QUERY CACHE WORKS WITH INNODB
------------------------------------------------------------
1) The use of the query cache for TBL is disabled when there is an
uncommitted change to TBL.
2) When a change to TBL commits, InnoDB stores the current value of
its global trx id counter, let us denote it by INV_TRX_ID, to the table object
in the InnoDB data dictionary, and does only allow such transactions whose
id <= INV_TRX_ID to use the query cache.
3) When InnoDB does an INSERT/DELETE/UPDATE to a table TBL, or an implicit
modification because an ON DELETE CASCADE, we invalidate the MySQL query cache
of TBL immediately.
How this is implemented inside InnoDB:
1) Since every modification always sets an IX type table lock on the InnoDB
table, it is easy to check if there can be uncommitted modifications for a
table: just check if there are locks in the lock list of the table.
2) When a transaction inside InnoDB commits, it reads the global trx id
counter and stores the value INV_TRX_ID to the tables on which it had a lock.
3) If there is an implicit table change from ON DELETE CASCADE or SET NULL,
InnoDB calls an invalidate method for the MySQL query cache for that table.
How this is implemented inside sql_cache.cc:
1) The query cache for an InnoDB table TBL is invalidated immediately at an
INSERT/UPDATE/DELETE, just like in the case of MyISAM. No need to delay
invalidation to the transaction commit.
2) To store or retrieve a value from the query cache of an InnoDB table TBL,
any query must first ask InnoDB's permission. We must pass the thd as a
parameter because InnoDB will look at the trx id, if any, associated with
that thd. Also the full_name which is used as key to search for the table
object. The full_name is a string containing the normalized path to the
table in the canonical format.
3) Use of the query cache for InnoDB tables is now allowed also when
AUTOCOMMIT==0 or we are inside BEGIN ... COMMIT. Thus transactions no longer
put restrictions on the use of the query cache.
*/
/******************************************************************//**
The MySQL query cache uses this to check from InnoDB if the query cache at
the moment is allowed to operate on an InnoDB table. The SQL query must
be a non-locking SELECT.
The query cache is allowed to operate on certain query only if this function
returns TRUE for all tables in the query.
If thd is not in the autocommit state, this function also starts a new
transaction for thd if there is no active trx yet, and assigns a consistent
read view to it if there is no read view yet.
Why a deadlock of threads is not possible: the query cache calls this function
at the start of a SELECT processing. Then the calling thread cannot be
holding any InnoDB semaphores. The calling thread is holding the
query cache mutex, and this function will reserve the InnoDB trx_sys->mutex.
Thus, the 'rank' in sync0sync.h of the MySQL query cache mutex is above
the InnoDB trx_sys->mutex.
@return TRUE if permitted, FALSE if not; note that the value FALSE
does not mean we should invalidate the query cache: invalidation is
called explicitly */
static
my_bool
innobase_query_caching_of_table_permitted(
/*======================================*/
THD* thd, /*!< in: thd of the user who is trying to
store a result to the query cache or
retrieve it */
char* full_name, /*!< in: normalized path to the table */
uint full_name_len, /*!< in: length of the normalized path
to the table */
ulonglong *unused) /*!< unused for this engine */
{
ibool is_autocommit;
trx_t* trx;
char norm_name[1000];
ut_a(full_name_len < 999);
trx = check_trx_exists(thd);
if (trx->isolation_level == TRX_ISO_SERIALIZABLE) {
/* In the SERIALIZABLE mode we add LOCK IN SHARE MODE to every
plain SELECT if AUTOCOMMIT is not on. */
return((my_bool)FALSE);
}
if (UNIV_UNLIKELY(trx->has_search_latch)) {
sql_print_error("The calling thread is holding the adaptive "
"search, latch though calling "
"innobase_query_caching_of_table_permitted.");
trx_print(stderr, trx, 1024);
}
trx_search_latch_release_if_reserved(trx);
innobase_srv_conc_force_exit_innodb(trx);
if (!thd_test_options(thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) {
is_autocommit = TRUE;
} else {
is_autocommit = FALSE;
}
if (is_autocommit && trx->n_mysql_tables_in_use == 0) {
/* We are going to retrieve the query result from the query
cache. This cannot be a store operation to the query cache
because then MySQL would have locks on tables already.
TODO: if the user has used LOCK TABLES to lock the table,
then we open a transaction in the call of row_.. below.
That trx can stay open until UNLOCK TABLES. The same problem
exists even if we do not use the query cache. MySQL should be
modified so that it ALWAYS calls some cleanup function when
the processing of a query ends!
We can imagine we instantaneously serialize this consistent
read trx to the current trx id counter. If trx2 would have
changed the tables of a query result stored in the cache, and
trx2 would have already committed, making the result obsolete,
then trx2 would have already invalidated the cache. Thus we
can trust the result in the cache is ok for this query. */
return((my_bool)TRUE);
}
/* Normalize the table name to InnoDB format */
normalize_table_name(norm_name, full_name);
innobase_register_trx(innodb_hton_ptr, thd, trx);
if (row_search_check_if_query_cache_permitted(trx, norm_name)) {
/* printf("Query cache for %s permitted\n", norm_name); */
return((my_bool)TRUE);
}
/* printf("Query cache for %s NOT permitted\n", norm_name); */
return((my_bool)FALSE);
}
/*****************************************************************//**
Invalidates the MySQL query cache for the table. */
UNIV_INTERN
void
innobase_invalidate_query_cache(
/*============================*/
trx_t* trx, /*!< in: transaction which
modifies the table */
const char* full_name, /*!< in: concatenation of
database name, null char NUL,
table name, null char NUL;
NOTE that in Windows this is
always in LOWER CASE! */
ulint full_name_len) /*!< in: full name length where
also the null chars count */
{
/* Note that the sync0sync.h rank of the query cache mutex is just
above the InnoDB trx_sys_t->lock. The caller of this function must
not have latches of a lower rank. */
#ifdef HAVE_QUERY_CACHE
char qcache_key_name[2 * (NAME_LEN + 1)];
size_t tabname_len;
size_t dbname_len;
/* Construct the key("db-name\0table$name\0") for the query cache using
the path name("db@002dname\0table@0024name\0") of the table in its
canonical form. */
dbname_len = filename_to_tablename(full_name, qcache_key_name,
sizeof(qcache_key_name));
tabname_len = filename_to_tablename(full_name + strlen(full_name) + 1,
qcache_key_name + dbname_len + 1,
sizeof(qcache_key_name)
- dbname_len - 1);
/* Argument TRUE below means we are using transactions */
mysql_query_cache_invalidate4(trx->mysql_thd,
qcache_key_name,
(dbname_len + tabname_len + 2),
TRUE);
#endif
}
/*****************************************************************//**
Convert an SQL identifier to the MySQL system_charset_info (UTF-8)
and quote it if needed.
@return pointer to the end of buf */
static
char*
innobase_convert_identifier(
/*========================*/
char* buf, /*!< out: buffer for converted identifier */
ulint buflen, /*!< in: length of buf, in bytes */
const char* id, /*!< in: identifier to convert */
ulint idlen, /*!< in: length of id, in bytes */
THD* thd, /*!< in: MySQL connection thread, or NULL */
ibool file_id)/*!< in: TRUE=id is a table or database name;
FALSE=id is an UTF-8 string */
{
const char* s = id;
int q;
if (file_id) {
char nz[MAX_TABLE_NAME_LEN + 1];
char nz2[MAX_TABLE_NAME_LEN + 1];
/* Decode the table name. The MySQL function expects
a NUL-terminated string. The input and output strings
buffers must not be shared. */
ut_a(idlen <= MAX_TABLE_NAME_LEN);
memcpy(nz, id, idlen);
nz[idlen] = 0;
s = nz2;
idlen = explain_filename(thd, nz, nz2, sizeof nz2,
EXPLAIN_PARTITIONS_AS_COMMENT);
goto no_quote;
}
/* See if the identifier needs to be quoted. */
if (UNIV_UNLIKELY(!thd)) {
q = '"';
} else {
q = get_quote_char_for_identifier(thd, s, (int) idlen);
}
if (q == EOF) {
no_quote:
if (UNIV_UNLIKELY(idlen > buflen)) {
idlen = buflen;
}
memcpy(buf, s, idlen);
return(buf + idlen);
}
/* Quote the identifier. */
if (buflen < 2) {
return(buf);
}
*buf++ = q;
buflen--;
for (; idlen; idlen--) {
int c = *s++;
if (UNIV_UNLIKELY(c == q)) {
if (UNIV_UNLIKELY(buflen < 3)) {
break;
}
*buf++ = c;
*buf++ = c;
buflen -= 2;
} else {
if (UNIV_UNLIKELY(buflen < 2)) {
break;
}
*buf++ = c;
buflen--;
}
}
*buf++ = q;
return(buf);
}
/*****************************************************************//**
Convert a table or index name to the MySQL system_charset_info (UTF-8)
and quote it if needed.
@return pointer to the end of buf */
UNIV_INTERN
char*
innobase_convert_name(
/*==================*/
char* buf, /*!< out: buffer for converted identifier */
ulint buflen, /*!< in: length of buf, in bytes */
const char* id, /*!< in: identifier to convert */
ulint idlen, /*!< in: length of id, in bytes */
THD* thd, /*!< in: MySQL connection thread, or NULL */
ibool table_id)/*!< in: TRUE=id is a table or database name;
FALSE=id is an index name */
{
char* s = buf;
const char* bufend = buf + buflen;
if (table_id) {
const char* slash = (const char*) memchr(id, '/', idlen);
if (!slash) {
goto no_db_name;
}
/* Print the database name and table name separately. */
s = innobase_convert_identifier(s, bufend - s, id, slash - id,
thd, TRUE);
if (UNIV_LIKELY(s < bufend)) {
*s++ = '.';
s = innobase_convert_identifier(s, bufend - s,
slash + 1, idlen
- (slash - id) - 1,
thd, TRUE);
}
} else if (UNIV_UNLIKELY(*id == TEMP_INDEX_PREFIX)) {
/* Temporary index name (smart ALTER TABLE) */
const char temp_index_suffix[]= "--temporary--";
s = innobase_convert_identifier(buf, buflen, id + 1, idlen - 1,
thd, FALSE);
if (s - buf + (sizeof temp_index_suffix - 1) < buflen) {
memcpy(s, temp_index_suffix,
sizeof temp_index_suffix - 1);
s += sizeof temp_index_suffix - 1;
}
} else {
no_db_name:
s = innobase_convert_identifier(buf, buflen, id, idlen,
thd, table_id);
}
return(s);
}
/*****************************************************************//**
A wrapper function of innobase_convert_name(), convert a table or
index name to the MySQL system_charset_info (UTF-8) and quote it if needed.
@return pointer to the end of buf */
UNIV_INTERN
void
innobase_format_name(
/*==================*/
char* buf, /*!< out: buffer for converted identifier */
ulint buflen, /*!< in: length of buf, in bytes */
const char* name, /*!< in: index or table name to format */
ibool is_index_name) /*!< in: index name */
{
const char* bufend;
bufend = innobase_convert_name(buf, buflen, name, strlen(name),
NULL, !is_index_name);
ut_ad((ulint) (bufend - buf) < buflen);
buf[bufend - buf] = '\0';
}
/**********************************************************************//**
Determines if the currently running transaction has been interrupted.
@return TRUE if interrupted */
UNIV_INTERN
ibool
trx_is_interrupted(
/*===============*/
const trx_t* trx) /*!< in: transaction */
{
return(trx && trx->mysql_thd && thd_killed(trx->mysql_thd));
}
/**********************************************************************//**
Determines if the currently running transaction is in strict mode.
@return TRUE if strict */
UNIV_INTERN
ibool
trx_is_strict(
/*==========*/
trx_t* trx) /*!< in: transaction */
{
return(trx && trx->mysql_thd && THDVAR(trx->mysql_thd, strict_mode));
}
/**************************************************************//**
Resets some fields of a prebuilt struct. The template is used in fast
retrieval of just those column values MySQL needs in its processing. */
inline
void
ha_innobase::reset_template(void)
/*=============================*/
{
ut_ad(prebuilt->magic_n == ROW_PREBUILT_ALLOCATED);
ut_ad(prebuilt->magic_n2 == prebuilt->magic_n);
prebuilt->keep_other_fields_on_keyread = 0;
prebuilt->read_just_key = 0;
prebuilt->in_fts_query = 0;
/* Reset index condition pushdown state. */
if (prebuilt->idx_cond) {
prebuilt->idx_cond = NULL;
prebuilt->idx_cond_n_cols = 0;
/* Invalidate prebuilt->mysql_template
in ha_innobase::write_row(). */
prebuilt->template_type = ROW_MYSQL_NO_TEMPLATE;
}
}
/*****************************************************************//**
Call this when you have opened a new table handle in HANDLER, before you
call index_read_idx() etc. Actually, we can let the cursor stay open even
over a transaction commit! Then you should call this before every operation,
fetch next etc. This function inits the necessary things even after a
transaction commit. */
UNIV_INTERN
void
ha_innobase::init_table_handle_for_HANDLER(void)
/*============================================*/
{
/* If current thd does not yet have a trx struct, create one.
If the current handle does not yet have a prebuilt struct, create
one. Update the trx pointers in the prebuilt struct. Normally
this operation is done in external_lock. */
update_thd(ha_thd());
/* Initialize the prebuilt struct much like it would be inited in
external_lock */
trx_search_latch_release_if_reserved(prebuilt->trx);
innobase_srv_conc_force_exit_innodb(prebuilt->trx);
/* If the transaction is not started yet, start it */
trx_start_if_not_started_xa(prebuilt->trx);
/* Assign a read view if the transaction does not have it yet */
trx_assign_read_view(prebuilt->trx);
innobase_register_trx(ht, user_thd, prebuilt->trx);
/* We did the necessary inits in this function, no need to repeat them
in row_search_for_mysql */
prebuilt->sql_stat_start = FALSE;
/* We let HANDLER always to do the reads as consistent reads, even
if the trx isolation level would have been specified as SERIALIZABLE */
prebuilt->select_lock_type = LOCK_NONE;
prebuilt->stored_select_lock_type = LOCK_NONE;
/* Always fetch all columns in the index record */
prebuilt->hint_need_to_fetch_extra_cols = ROW_RETRIEVE_ALL_COLS;
/* We want always to fetch all columns in the whole row? Or do
we???? */
prebuilt->used_in_HANDLER = TRUE;
reset_template();
}
/*********************************************************************//**
Opens an InnoDB database.
@return 0 on success, error code on failure */
static
int
innobase_init(
/*==========*/
void *p) /*!< in: InnoDB handlerton */
{
static char current_dir[3]; /*!< Set if using current lib */
int err;
bool ret;
char *default_path;
uint format_id;
ulong num_pll_degree;
DBUG_ENTER("innobase_init");
handlerton *innobase_hton= (handlerton*) p;
innodb_hton_ptr = innobase_hton;
innobase_hton->state = SHOW_OPTION_YES;
innobase_hton->db_type= DB_TYPE_INNODB;
innobase_hton->savepoint_offset = sizeof(trx_named_savept_t);
innobase_hton->close_connection = innobase_close_connection;
innobase_hton->savepoint_set = innobase_savepoint;
innobase_hton->savepoint_rollback = innobase_rollback_to_savepoint;
innobase_hton->savepoint_rollback_can_release_mdl =
innobase_rollback_to_savepoint_can_release_mdl;
innobase_hton->savepoint_release = innobase_release_savepoint;
innobase_hton->commit = innobase_commit;
innobase_hton->rollback = innobase_rollback;
innobase_hton->prepare = innobase_xa_prepare;
innobase_hton->recover = innobase_xa_recover;
innobase_hton->commit_by_xid = innobase_commit_by_xid;
innobase_hton->rollback_by_xid = innobase_rollback_by_xid;
innobase_hton->create_cursor_read_view = innobase_create_cursor_view;
innobase_hton->set_cursor_read_view = innobase_set_cursor_view;
innobase_hton->close_cursor_read_view = innobase_close_cursor_view;
innobase_hton->create = innobase_create_handler;
innobase_hton->drop_database = innobase_drop_database;
innobase_hton->panic = innobase_end;
innobase_hton->start_consistent_snapshot =
innobase_start_trx_and_assign_read_view;
innobase_hton->flush_logs = innobase_flush_logs;
innobase_hton->show_status = innobase_show_status;
innobase_hton->flags =
HTON_SUPPORTS_EXTENDED_KEYS | HTON_SUPPORTS_FOREIGN_KEYS;
innobase_hton->release_temporary_latches =
innobase_release_temporary_latches;
innobase_hton->data = &innodb_api_cb;
ut_a(DATA_MYSQL_TRUE_VARCHAR == (ulint)MYSQL_TYPE_VARCHAR);
#ifndef DBUG_OFF
static const char test_filename[] = "-@";
char test_tablename[sizeof test_filename
+ sizeof(srv_mysql50_table_name_prefix) - 1];
if ((sizeof(test_tablename)) - 1
!= filename_to_tablename(test_filename,
test_tablename,
sizeof(test_tablename), true)
|| strncmp(test_tablename,
srv_mysql50_table_name_prefix,
sizeof(srv_mysql50_table_name_prefix) - 1)
|| strcmp(test_tablename
+ sizeof(srv_mysql50_table_name_prefix) - 1,
test_filename)) {
sql_print_error("tablename encoding has been changed");
goto error;
}
#endif /* DBUG_OFF */
/* Check that values don't overflow on 32-bit systems. */
if (sizeof(ulint) == 4) {
if (innobase_buffer_pool_size > UINT_MAX32) {
sql_print_error(
"innobase_buffer_pool_size can't be over 4GB"
" on 32-bit systems");
goto error;
}
}
os_innodb_umask = (ulint) my_umask;
/* First calculate the default path for innodb_data_home_dir etc.,
in case the user has not given any value.
Note that when using the embedded server, the datadirectory is not
necessarily the current directory of this program. */
if (mysqld_embedded) {
default_path = mysql_real_data_home;
fil_path_to_mysql_datadir = mysql_real_data_home;
} else {
/* It's better to use current lib, to keep paths short */
current_dir[0] = FN_CURLIB;
current_dir[1] = FN_LIBCHAR;
current_dir[2] = 0;
default_path = current_dir;
}
ut_a(default_path);
/* Set InnoDB initialization parameters according to the values
read from MySQL .cnf file */
/*--------------- Data files -------------------------*/
/* The default dir for data files is the datadir of MySQL */
srv_data_home = (innobase_data_home_dir ? innobase_data_home_dir :
default_path);
/* Set default InnoDB data file size to 12 MB and let it be
auto-extending. Thus users can use InnoDB in >= 4.0 without having
to specify any startup options. */
if (!innobase_data_file_path) {
innobase_data_file_path = (char*) "ibdata1:12M:autoextend";
}
/* Since InnoDB edits the argument in the next call, we make another
copy of it: */
internal_innobase_data_file_path = my_strdup(innobase_data_file_path,
MYF(MY_FAE));
ret = (bool) srv_parse_data_file_paths_and_sizes(
internal_innobase_data_file_path);
if (ret == FALSE) {
sql_print_error(
"InnoDB: syntax error in innodb_data_file_path"
" or size specified is less than 1 megabyte");
mem_free_and_error:
srv_free_paths_and_sizes();
my_free(internal_innobase_data_file_path);
goto error;
}
/* -------------- All log files ---------------------------*/
/* The default dir for log files is the datadir of MySQL */
if (!srv_log_group_home_dir) {
srv_log_group_home_dir = default_path;
}
#ifdef UNIV_LOG_ARCHIVE
/* Since innodb_log_arch_dir has no relevance under MySQL,
starting from 4.0.6 we always set it the same as
innodb_log_group_home_dir: */
innobase_log_arch_dir = innobase_log_group_home_dir;
srv_arch_dir = innobase_log_arch_dir;
#endif /* UNIG_LOG_ARCHIVE */
srv_normalize_path_for_win(srv_log_group_home_dir);
if (strchr(srv_log_group_home_dir, ';')) {
sql_print_error("syntax error in innodb_log_group_home_dir");
goto mem_free_and_error;
}
if (innobase_mirrored_log_groups == 1) {
sql_print_warning(
"innodb_mirrored_log_groups is an unimplemented "
"feature and the variable will be completely "
"removed in a future version.");
}
if (innobase_mirrored_log_groups > 1) {
sql_print_error(
"innodb_mirrored_log_groups is an unimplemented feature and "
"the variable will be completely removed in a future version. "
"Using values other than 1 is not supported.");
goto mem_free_and_error;
}
if (innobase_mirrored_log_groups == 0) {
/* To throw a deprecation warning message when the option is
passed, the default was changed to '0' (as a workaround). Since
the only value accepted for this option is '1', reset it to 1 */
innobase_mirrored_log_groups = 1;
}
/* Validate the file format by animal name */
if (innobase_file_format_name != NULL) {
format_id = innobase_file_format_name_lookup(
innobase_file_format_name);
if (format_id > UNIV_FORMAT_MAX) {
sql_print_error("InnoDB: wrong innodb_file_format.");
goto mem_free_and_error;
}
} else {
/* Set it to the default file format id. Though this
should never happen. */
format_id = 0;
}
srv_file_format = format_id;
/* Given the type of innobase_file_format_name we have little
choice but to cast away the constness from the returned name.
innobase_file_format_name is used in the MySQL set variable
interface and so can't be const. */
innobase_file_format_name =
(char*) trx_sys_file_format_id_to_name(format_id);
/* Check innobase_file_format_check variable */
if (!innobase_file_format_check) {
/* Set the value to disable checking. */
srv_max_file_format_at_startup = UNIV_FORMAT_MAX + 1;
} else {
/* Set the value to the lowest supported format. */
srv_max_file_format_at_startup = UNIV_FORMAT_MIN;
}
/* Did the user specify a format name that we support?
As a side effect it will update the variable
srv_max_file_format_at_startup */
if (innobase_file_format_validate_and_set(
innobase_file_format_max) < 0) {
sql_print_error("InnoDB: invalid "
"innodb_file_format_max value: "
"should be any value up to %s or its "
"equivalent numeric id",
trx_sys_file_format_id_to_name(
UNIV_FORMAT_MAX));
goto mem_free_and_error;
}
if (innobase_change_buffering) {
ulint use;
for (use = 0;
use < UT_ARR_SIZE(innobase_change_buffering_values);
use++) {
if (!innobase_strcasecmp(
innobase_change_buffering,
innobase_change_buffering_values[use])) {
ibuf_use = (ibuf_use_t) use;
goto innobase_change_buffering_inited_ok;
}
}
sql_print_error("InnoDB: invalid value "
"innodb_change_buffering=%s",
innobase_change_buffering);
goto mem_free_and_error;
}
innobase_change_buffering_inited_ok:
ut_a((ulint) ibuf_use < UT_ARR_SIZE(innobase_change_buffering_values));
innobase_change_buffering = (char*)
innobase_change_buffering_values[ibuf_use];
/* Check that interdependent parameters have sane values. */
if (srv_max_buf_pool_modified_pct < srv_max_dirty_pages_pct_lwm) {
sql_print_warning("InnoDB: innodb_max_dirty_pages_pct_lwm"
" cannot be set higher than"
" innodb_max_dirty_pages_pct.\n"
"InnoDB: Setting"
" innodb_max_dirty_pages_pct_lwm to %lu\n",
srv_max_buf_pool_modified_pct);
srv_max_dirty_pages_pct_lwm = srv_max_buf_pool_modified_pct;
}
if (srv_max_io_capacity == SRV_MAX_IO_CAPACITY_DUMMY_DEFAULT) {
if (srv_io_capacity >= SRV_MAX_IO_CAPACITY_LIMIT / 2) {
/* Avoid overflow. */
srv_max_io_capacity = SRV_MAX_IO_CAPACITY_LIMIT;
} else {
/* The user has not set the value. We should
set it based on innodb_io_capacity. */
srv_max_io_capacity = static_cast<ulong>(
ut_max(2 * srv_io_capacity, 2000));
}
} else if (srv_max_io_capacity < srv_io_capacity) {
sql_print_warning("InnoDB: innodb_io_capacity"
" cannot be set higher than"
" innodb_io_capacity_max.\n"
"InnoDB: Setting"
" innodb_io_capacity to %lu\n",
srv_max_io_capacity);
srv_io_capacity = srv_max_io_capacity;
}
if (!is_filename_allowed(srv_buf_dump_filename,
strlen(srv_buf_dump_filename), FALSE)) {
sql_print_error("InnoDB: innodb_buffer_pool_filename"
" cannot have colon (:) in the file name.");
goto mem_free_and_error;
}
/* --------------------------------------------------*/
srv_file_flush_method_str = innobase_file_flush_method;
srv_log_file_size = (ib_uint64_t) innobase_log_file_size;
#ifdef UNIV_LOG_ARCHIVE
srv_log_archive_on = (ulint) innobase_log_archive;
#endif /* UNIV_LOG_ARCHIVE */
/* Check that the value of system variable innodb_page_size was
set correctly. Its value was put into srv_page_size. If valid,
return the associated srv_page_size_shift.*/
srv_page_size_shift = innodb_page_size_validate(srv_page_size);
if (!srv_page_size_shift) {
sql_print_error("InnoDB: Invalid page size=%lu.\n",
srv_page_size);
goto mem_free_and_error;
}
if (UNIV_PAGE_SIZE_DEF != srv_page_size) {
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: innodb-page-size has been changed"
" from the default value %d to %lu.\n",
UNIV_PAGE_SIZE_DEF, srv_page_size);
}
srv_log_buffer_size = (ulint) innobase_log_buffer_size;
if (innobase_buffer_pool_instances == 0) {
innobase_buffer_pool_instances = 8;
#if defined(__WIN__) && !defined(_WIN64)
if (innobase_buffer_pool_size > 1331 * 1024 * 1024) {
innobase_buffer_pool_instances
= ut_min(MAX_BUFFER_POOLS,
(long) (innobase_buffer_pool_size
/ (128 * 1024 * 1024)));
}
#endif /* defined(__WIN__) && !defined(_WIN64) */
}
srv_buf_pool_size = (ulint) innobase_buffer_pool_size;
srv_buf_pool_instances = (ulint) innobase_buffer_pool_instances;
srv_mem_pool_size = (ulint) innobase_additional_mem_pool_size;
if (innobase_additional_mem_pool_size
!= 8*1024*1024L /* the default */ ) {
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: Warning: Using "
"innodb_additional_mem_pool_size is DEPRECATED. "
"This option may be removed in future releases, "
"together with the option innodb_use_sys_malloc "
"and with the InnoDB's internal memory "
"allocator.\n");
}
if (!srv_use_sys_malloc ) {
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: Warning: Setting "
"innodb_use_sys_malloc to FALSE is DEPRECATED. "
"This option may be removed in future releases, "
"together with the InnoDB's internal memory "
"allocator.\n");
}
srv_n_file_io_threads = (ulint) innobase_file_io_threads;
srv_n_read_io_threads = (ulint) innobase_read_io_threads;
srv_n_write_io_threads = (ulint) innobase_write_io_threads;
srv_use_doublewrite_buf = (ibool) innobase_use_doublewrite;
if (!innobase_use_checksums) {
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: Warning: Setting "
"innodb_checksums to OFF is DEPRECATED. "
"This option may be removed in future releases. "
"You should set innodb_checksum_algorithm=NONE "
"instead.\n");
srv_checksum_algorithm = SRV_CHECKSUM_ALGORITHM_NONE;
}
#ifdef HAVE_LARGE_PAGES
if ((os_use_large_pages = (ibool) my_use_large_pages)) {
os_large_page_size = (ulint) opt_large_page_size;
}
#endif
row_rollback_on_timeout = (ibool) innobase_rollback_on_timeout;
srv_locks_unsafe_for_binlog = (ibool) innobase_locks_unsafe_for_binlog;
if (innobase_locks_unsafe_for_binlog) {
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: Warning: Using "
"innodb_locks_unsafe_for_binlog is DEPRECATED. "
"This option may be removed in future releases. "
"Please use READ COMMITTED transaction isolation "
"level instead, see " REFMAN "set-transaction.html.\n");
}
if (innobase_open_files < 10) {
innobase_open_files = 300;
if (srv_file_per_table && table_cache_size > 300) {
innobase_open_files = table_cache_size;
}
}
srv_max_n_open_files = (ulint) innobase_open_files;
srv_innodb_status = (ibool) innobase_create_status_file;
srv_print_verbose_log = mysqld_embedded ? 0 : 1;
/* Round up fts_sort_pll_degree to nearest power of 2 number */
for (num_pll_degree = 1;
num_pll_degree < fts_sort_pll_degree;
num_pll_degree <<= 1) {
/* No op */
}
fts_sort_pll_degree = num_pll_degree;
/* Store the default charset-collation number of this MySQL
installation */
data_mysql_default_charset_coll = (ulint) default_charset_info->number;
ut_a(DATA_MYSQL_LATIN1_SWEDISH_CHARSET_COLL ==
my_charset_latin1.number);
ut_a(DATA_MYSQL_BINARY_CHARSET_COLL == my_charset_bin.number);
/* Store the latin1_swedish_ci character ordering table to InnoDB. For
non-latin1_swedish_ci charsets we use the MySQL comparison functions,
and consequently we do not need to know the ordering internally in
InnoDB. */
ut_a(0 == strcmp(my_charset_latin1.name, "latin1_swedish_ci"));
srv_latin1_ordering = my_charset_latin1.sort_order;
innobase_commit_concurrency_init_default();
#ifdef HAVE_PSI_INTERFACE
/* Register keys with MySQL performance schema */
int count;
count = array_elements(all_pthread_mutexes);
mysql_mutex_register("innodb", all_pthread_mutexes, count);
# ifdef UNIV_PFS_MUTEX
count = array_elements(all_innodb_mutexes);
mysql_mutex_register("innodb", all_innodb_mutexes, count);
# endif /* UNIV_PFS_MUTEX */
# ifdef UNIV_PFS_RWLOCK
count = array_elements(all_innodb_rwlocks);
mysql_rwlock_register("innodb", all_innodb_rwlocks, count);
# endif /* UNIV_PFS_MUTEX */
# ifdef UNIV_PFS_THREAD
count = array_elements(all_innodb_threads);
mysql_thread_register("innodb", all_innodb_threads, count);
# endif /* UNIV_PFS_THREAD */
# ifdef UNIV_PFS_IO
count = array_elements(all_innodb_files);
mysql_file_register("innodb", all_innodb_files, count);
# endif /* UNIV_PFS_IO */
count = array_elements(all_innodb_conds);
mysql_cond_register("innodb", all_innodb_conds, count);
#endif /* HAVE_PSI_INTERFACE */
/* Since we in this module access directly the fields of a trx
struct, and due to different headers and flags it might happen that
ib_mutex_t has a different size in this module and in InnoDB
modules, we check at run time that the size is the same in
these compilation modules. */
err = innobase_start_or_create_for_mysql();
if (err != DB_SUCCESS) {
goto mem_free_and_error;
}
/* Adjust the innodb_undo_logs config object */
innobase_undo_logs_init_default_max();
innobase_old_blocks_pct = static_cast<uint>(
buf_LRU_old_ratio_update(innobase_old_blocks_pct, TRUE));
ibuf_max_size_update(innobase_change_buffer_max_size);
innobase_open_tables = hash_create(200);
mysql_mutex_init(innobase_share_mutex_key,
&innobase_share_mutex,
MY_MUTEX_INIT_FAST);
mysql_mutex_init(commit_cond_mutex_key,
&commit_cond_m, MY_MUTEX_INIT_FAST);
mysql_cond_init(commit_cond_key, &commit_cond, NULL);
innodb_inited= 1;
#ifdef MYSQL_DYNAMIC_PLUGIN
if (innobase_hton != p) {
innobase_hton = reinterpret_cast<handlerton*>(p);
*innobase_hton = *innodb_hton_ptr;
}
#endif /* MYSQL_DYNAMIC_PLUGIN */
/* Get the current high water mark format. */
innobase_file_format_max = (char*) trx_sys_file_format_max_get();
/* Currently, monitor counter information are not persistent. */
memset(monitor_set_tbl, 0, sizeof monitor_set_tbl);
memset(innodb_counter_value, 0, sizeof innodb_counter_value);
/* Do this as late as possible so server is fully starts up,
since we might get some initial stats if user choose to turn
on some counters from start up */
if (innobase_enable_monitor_counter) {
innodb_enable_monitor_at_startup(
innobase_enable_monitor_counter);
}
/* Turn on monitor counters that are default on */
srv_mon_default_on();
DBUG_RETURN(FALSE);
error:
DBUG_RETURN(TRUE);
}
/*******************************************************************//**
Closes an InnoDB database.
@return TRUE if error */
static
int
innobase_end(
/*=========*/
handlerton* hton, /*!< in/out: InnoDB handlerton */
ha_panic_function type __attribute__((unused)))
/*!< in: ha_panic() parameter */
{
int err= 0;
DBUG_ENTER("innobase_end");
DBUG_ASSERT(hton == innodb_hton_ptr);
if (innodb_inited) {
srv_fast_shutdown = (ulint) innobase_fast_shutdown;
innodb_inited = 0;
hash_table_free(innobase_open_tables);
innobase_open_tables = NULL;
if (innobase_shutdown_for_mysql() != DB_SUCCESS) {
err = 1;
}
srv_free_paths_and_sizes();
my_free(internal_innobase_data_file_path);
mysql_mutex_destroy(&innobase_share_mutex);
mysql_mutex_destroy(&commit_cond_m);
mysql_cond_destroy(&commit_cond);
}
DBUG_RETURN(err);
}
/****************************************************************//**
Flushes InnoDB logs to disk and makes a checkpoint. Really, a commit flushes
the logs, and the name of this function should be innobase_checkpoint.
@return TRUE if error */
static
bool
innobase_flush_logs(
/*================*/
handlerton* hton) /*!< in/out: InnoDB handlerton */
{
bool result = 0;
DBUG_ENTER("innobase_flush_logs");
DBUG_ASSERT(hton == innodb_hton_ptr);
if (!srv_read_only_mode) {
log_buffer_flush_to_disk();
}
DBUG_RETURN(result);
}
/*****************************************************************//**
Commits a transaction in an InnoDB database. */
static
void
innobase_commit_low(
/*================*/
trx_t* trx) /*!< in: transaction handle */
{
if (trx_is_started(trx)) {
trx_commit_for_mysql(trx);
}
}
/*****************************************************************//**
Creates an InnoDB transaction struct for the thd if it does not yet have one.
Starts a new InnoDB transaction if a transaction is not yet started. And
assigns a new snapshot for a consistent read if the transaction does not yet
have one.
@return 0 */
static
int
innobase_start_trx_and_assign_read_view(
/*====================================*/
handlerton* hton, /*!< in: Innodb handlerton */
THD* thd) /*!< in: MySQL thread handle of the user for
whom the transaction should be committed */
{
trx_t* trx;
DBUG_ENTER("innobase_start_trx_and_assign_read_view");
DBUG_ASSERT(hton == innodb_hton_ptr);
/* Create a new trx struct for thd, if it does not yet have one */
trx = check_trx_exists(thd);
/* This is just to play safe: release a possible FIFO ticket and
search latch. Since we can potentially reserve the trx_sys->mutex,
we have to release the search system latch first to obey the latching
order. */
trx_search_latch_release_if_reserved(trx);
innobase_srv_conc_force_exit_innodb(trx);
/* If the transaction is not started yet, start it */
trx_start_if_not_started_xa(trx);
/* Assign a read view if the transaction does not have it yet.
Do this only if transaction is using REPEATABLE READ isolation
level. */
trx->isolation_level = innobase_map_isolation_level(
thd_get_trx_isolation(thd));
if (trx->isolation_level == TRX_ISO_REPEATABLE_READ) {
trx_assign_read_view(trx);
} else {
push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
HA_ERR_UNSUPPORTED,
"InnoDB: WITH CONSISTENT SNAPSHOT "
"was ignored because this phrase "
"can only be used with "
"REPEATABLE READ isolation level.");
}
/* Set the MySQL flag to mark that there is an active transaction */
innobase_register_trx(hton, current_thd, trx);
DBUG_RETURN(0);
}
/*****************************************************************//**
Commits a transaction in an InnoDB database or marks an SQL statement
ended.
@return 0 */
static
int
innobase_commit(
/*============*/
handlerton* hton, /*!< in: Innodb handlerton */
THD* thd, /*!< in: MySQL thread handle of the
user for whom the transaction should
be committed */
bool commit_trx) /*!< in: true - commit transaction
false - the current SQL statement
ended */
{
trx_t* trx;
DBUG_ENTER("innobase_commit");
DBUG_ASSERT(hton == innodb_hton_ptr);
DBUG_PRINT("trans", ("ending transaction"));
trx = check_trx_exists(thd);
/* Since we will reserve the trx_sys->mutex, we have to release
the search system latch first to obey the latching order. */
if (trx->has_search_latch) {
trx_search_latch_release_if_reserved(trx);
}
/* Transaction is deregistered only in a commit or a rollback. If
it is deregistered we know there cannot be resources to be freed
and we could return immediately. For the time being, we play safe
and do the cleanup though there should be nothing to clean up. */
if (!trx_is_registered_for_2pc(trx) && trx_is_started(trx)) {
sql_print_error("Transaction not registered for MySQL 2PC, "
"but transaction is active");
}
if (commit_trx
|| (!thd_test_options(thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN))) {
/* We were instructed to commit the whole transaction, or
this is an SQL statement end and autocommit is on */
/* We need current binlog position for mysqlbackup to work. */
retry:
if (innobase_commit_concurrency > 0) {
mysql_mutex_lock(&commit_cond_m);
commit_threads++;
if (commit_threads > innobase_commit_concurrency) {
commit_threads--;
mysql_cond_wait(&commit_cond,
&commit_cond_m);
mysql_mutex_unlock(&commit_cond_m);
goto retry;
}
else {
mysql_mutex_unlock(&commit_cond_m);
}
}
/* The following call read the binary log position of
the transaction being committed.
Binary logging of other engines is not relevant to
InnoDB as all InnoDB requires is that committing
InnoDB transactions appear in the same order in the
MySQL binary log as they appear in InnoDB logs, which
is guaranteed by the server.
If the binary log is not enabled, or the transaction
is not written to the binary log, the file name will
be a NULL pointer. */
unsigned long long pos;
thd_binlog_pos(thd, &trx->mysql_log_file_name, &pos);
trx->mysql_log_offset= static_cast<ib_int64_t>(pos);
/* Don't do write + flush right now. For group commit
to work we want to do the flush later. */
trx->flush_log_later = TRUE;
innobase_commit_low(trx);
trx->flush_log_later = FALSE;
if (innobase_commit_concurrency > 0) {
mysql_mutex_lock(&commit_cond_m);
commit_threads--;
mysql_cond_signal(&commit_cond);
mysql_mutex_unlock(&commit_cond_m);
}
trx_deregister_from_2pc(trx);
/* Now do a write + flush of logs. */
trx_commit_complete_for_mysql(trx);
} else {
/* We just mark the SQL statement ended and do not do a
transaction commit */
/* If we had reserved the auto-inc lock for some
table in this SQL statement we release it now */
lock_unlock_table_autoinc(trx);
/* Store the current undo_no of the transaction so that we
know where to roll back if we have to roll back the next
SQL statement */
trx_mark_sql_stat_end(trx);
}
trx->n_autoinc_rows = 0; /* Reset the number AUTO-INC rows required */
/* This is a statement level variable. */
trx->fts_next_doc_id = 0;
innobase_srv_conc_force_exit_innodb(trx);
DBUG_RETURN(0);
}
/*****************************************************************//**
Rolls back a transaction or the latest SQL statement.
@return 0 or error number */
static
int
innobase_rollback(
/*==============*/
handlerton* hton, /*!< in: Innodb handlerton */
THD* thd, /*!< in: handle to the MySQL thread
of the user whose transaction should
be rolled back */
bool rollback_trx) /*!< in: TRUE - rollback entire
transaction FALSE - rollback the current
statement only */
{
dberr_t error;
trx_t* trx;
DBUG_ENTER("innobase_rollback");
DBUG_ASSERT(hton == innodb_hton_ptr);
DBUG_PRINT("trans", ("aborting transaction"));
trx = check_trx_exists(thd);
/* Release a possible FIFO ticket and search latch. Since we will
reserve the trx_sys->mutex, we have to release the search system
latch first to obey the latching order. */
trx_search_latch_release_if_reserved(trx);
innobase_srv_conc_force_exit_innodb(trx);
trx->n_autoinc_rows = 0; /* Reset the number AUTO-INC rows required */
/* If we had reserved the auto-inc lock for some table (if
we come here to roll back the latest SQL statement) we
release it now before a possibly lengthy rollback */
lock_unlock_table_autoinc(trx);
/* This is a statement level variable. */
trx->fts_next_doc_id = 0;
if (rollback_trx
|| !thd_test_options(thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) {
error = trx_rollback_for_mysql(trx);
trx_deregister_from_2pc(trx);
} else {
error = trx_rollback_last_sql_stat_for_mysql(trx);
}
DBUG_RETURN(convert_error_code_to_mysql(error, 0, NULL));
}
/*****************************************************************//**
Rolls back a transaction
@return 0 or error number */
static
int
innobase_rollback_trx(
/*==================*/
trx_t* trx) /*!< in: transaction */
{
dberr_t error = DB_SUCCESS;
DBUG_ENTER("innobase_rollback_trx");
DBUG_PRINT("trans", ("aborting transaction"));
/* Release a possible FIFO ticket and search latch. Since we will
reserve the trx_sys->mutex, we have to release the search system
latch first to obey the latching order. */
trx_search_latch_release_if_reserved(trx);
innobase_srv_conc_force_exit_innodb(trx);
/* If we had reserved the auto-inc lock for some table (if
we come here to roll back the latest SQL statement) we
release it now before a possibly lengthy rollback */
lock_unlock_table_autoinc(trx);
if (!trx->read_only) {
error = trx_rollback_for_mysql(trx);
}
DBUG_RETURN(convert_error_code_to_mysql(error, 0, NULL));
}
/*****************************************************************//**
Rolls back a transaction to a savepoint.
@return 0 if success, HA_ERR_NO_SAVEPOINT if no savepoint with the
given name */
static
int
innobase_rollback_to_savepoint(
/*===========================*/
handlerton* hton, /*!< in: Innodb handlerton */
THD* thd, /*!< in: handle to the MySQL thread
of the user whose transaction should
be rolled back to savepoint */
void* savepoint) /*!< in: savepoint data */
{
ib_int64_t mysql_binlog_cache_pos;
dberr_t error;
trx_t* trx;
char name[64];
DBUG_ENTER("innobase_rollback_to_savepoint");
DBUG_ASSERT(hton == innodb_hton_ptr);
trx = check_trx_exists(thd);
/* Release a possible FIFO ticket and search latch. Since we will
reserve the trx_sys->mutex, we have to release the search system
latch first to obey the latching order. */
trx_search_latch_release_if_reserved(trx);
innobase_srv_conc_force_exit_innodb(trx);
/* TODO: use provided savepoint data area to store savepoint data */
longlong2str((ulint) savepoint, name, 36);
error = trx_rollback_to_savepoint_for_mysql(
trx, name, &mysql_binlog_cache_pos);
if (error == DB_SUCCESS && trx->fts_trx != NULL) {
fts_savepoint_rollback(trx, name);
}
DBUG_RETURN(convert_error_code_to_mysql(error, 0, NULL));
}
/*****************************************************************//**
Check whether innodb state allows to safely release MDL locks after
rollback to savepoint.
When binlog is on, MDL locks acquired after savepoint unit are not
released if there are any locks held in InnoDB.
@return true if it is safe, false if its not safe. */
static
bool
innobase_rollback_to_savepoint_can_release_mdl(
/*===========================================*/
handlerton* hton, /*!< in: InnoDB handlerton */
THD* thd) /*!< in: handle to the MySQL thread
of the user whose transaction should
be rolled back to savepoint */
{
trx_t* trx;
DBUG_ENTER("innobase_rollback_to_savepoint_can_release_mdl");
DBUG_ASSERT(hton == innodb_hton_ptr);
trx = check_trx_exists(thd);
ut_ad(trx);
/* If transaction has not acquired any locks then it is safe
to release MDL after rollback to savepoint */
if (!(UT_LIST_GET_LEN(trx->lock.trx_locks))) {
DBUG_RETURN(true);
}
DBUG_RETURN(false);
}
/*****************************************************************//**
Release transaction savepoint name.
@return 0 if success, HA_ERR_NO_SAVEPOINT if no savepoint with the
given name */
static
int
innobase_release_savepoint(
/*=======================*/
handlerton* hton, /*!< in: handlerton for Innodb */
THD* thd, /*!< in: handle to the MySQL thread
of the user whose transaction's
savepoint should be released */
void* savepoint) /*!< in: savepoint data */
{
dberr_t error;
trx_t* trx;
char name[64];
DBUG_ENTER("innobase_release_savepoint");
DBUG_ASSERT(hton == innodb_hton_ptr);
trx = check_trx_exists(thd);
/* TODO: use provided savepoint data area to store savepoint data */
longlong2str((ulint) savepoint, name, 36);
error = trx_release_savepoint_for_mysql(trx, name);
if (error == DB_SUCCESS && trx->fts_trx != NULL) {
fts_savepoint_release(trx, name);
}
DBUG_RETURN(convert_error_code_to_mysql(error, 0, NULL));
}
/*****************************************************************//**
Sets a transaction savepoint.
@return always 0, that is, always succeeds */
static
int
innobase_savepoint(
/*===============*/
handlerton* hton, /*!< in: handle to the Innodb handlerton */
THD* thd, /*!< in: handle to the MySQL thread */
void* savepoint) /*!< in: savepoint data */
{
dberr_t error;
trx_t* trx;
DBUG_ENTER("innobase_savepoint");
DBUG_ASSERT(hton == innodb_hton_ptr);
/* In the autocommit mode there is no sense to set a savepoint
(unless we are in sub-statement), so SQL layer ensures that
this method is never called in such situation. */
trx = check_trx_exists(thd);
/* Release a possible FIFO ticket and search latch. Since we will
reserve the trx_sys->mutex, we have to release the search system
latch first to obey the latching order. */
trx_search_latch_release_if_reserved(trx);
innobase_srv_conc_force_exit_innodb(trx);
/* Cannot happen outside of transaction */
DBUG_ASSERT(trx_is_registered_for_2pc(trx));
/* TODO: use provided savepoint data area to store savepoint data */
char name[64];
longlong2str((ulint) savepoint,name,36);
error = trx_savepoint_for_mysql(trx, name, (ib_int64_t)0);
if (error == DB_SUCCESS && trx->fts_trx != NULL) {
fts_savepoint_take(trx, trx->fts_trx, name);
}
DBUG_RETURN(convert_error_code_to_mysql(error, 0, NULL));
}
/*****************************************************************//**
Frees a possible InnoDB trx object associated with the current THD.
@return 0 or error number */
static
int
innobase_close_connection(
/*======================*/
handlerton* hton, /*!< in: innobase handlerton */
THD* thd) /*!< in: handle to the MySQL thread of the user
whose resources should be free'd */
{
trx_t* trx;
DBUG_ENTER("innobase_close_connection");
DBUG_ASSERT(hton == innodb_hton_ptr);
trx = thd_to_trx(thd);
ut_a(trx);
if (!trx_is_registered_for_2pc(trx) && trx_is_started(trx)) {
sql_print_error("Transaction not registered for MySQL 2PC, "
"but transaction is active");
}
if (trx_is_started(trx) && log_warnings) {
sql_print_warning(
"MySQL is closing a connection that has an active "
"InnoDB transaction. " TRX_ID_FMT " row modifications "
"will roll back.",
trx->undo_no);
}
innobase_rollback_trx(trx);
trx_free_for_mysql(trx);
DBUG_RETURN(0);
}
/*****************************************************************//**
Frees a possible InnoDB trx object associated with the current THD.
@return 0 or error number */
UNIV_INTERN
int
innobase_close_thd(
/*===============*/
THD* thd) /*!< in: handle to the MySQL thread of the user
whose resources should be free'd */
{
trx_t* trx = thd_to_trx(thd);
if (!trx) {
return(0);
}
return(innobase_close_connection(innodb_hton_ptr, thd));
}
/*************************************************************************//**
** InnoDB database tables
*****************************************************************************/
/****************************************************************//**
Get the record format from the data dictionary.
@return one of ROW_TYPE_REDUNDANT, ROW_TYPE_COMPACT,
ROW_TYPE_COMPRESSED, ROW_TYPE_DYNAMIC */
UNIV_INTERN
enum row_type
ha_innobase::get_row_type() const
/*=============================*/
{
if (prebuilt && prebuilt->table) {
const ulint flags = prebuilt->table->flags;
switch (dict_tf_get_rec_format(flags)) {
case REC_FORMAT_REDUNDANT:
return(ROW_TYPE_REDUNDANT);
case REC_FORMAT_COMPACT:
return(ROW_TYPE_COMPACT);
case REC_FORMAT_COMPRESSED:
return(ROW_TYPE_COMPRESSED);
case REC_FORMAT_DYNAMIC:
return(ROW_TYPE_DYNAMIC);
}
}
ut_ad(0);
return(ROW_TYPE_NOT_USED);
}
/****************************************************************//**
Get the table flags to use for the statement.
@return table flags */
UNIV_INTERN
handler::Table_flags
ha_innobase::table_flags() const
/*============================*/
{
/* Need to use tx_isolation here since table flags is (also)
called before prebuilt is inited. */
ulong const tx_isolation = thd_tx_isolation(ha_thd());
if (tx_isolation <= ISO_READ_COMMITTED) {
return(int_table_flags);
}
return(int_table_flags | HA_BINLOG_STMT_CAPABLE);
}
/****************************************************************//**
Gives the file extension of an InnoDB single-table tablespace. */
static const char* ha_innobase_exts[] = {
".ibd",
".isl",
NullS
};
/****************************************************************//**
Returns the table type (storage engine name).
@return table type */
UNIV_INTERN
const char*
ha_innobase::table_type() const
/*===========================*/
{
return(innobase_hton_name);
}
/****************************************************************//**
Returns the index type.
@return index type */
UNIV_INTERN
const char*
ha_innobase::index_type(
/*====================*/
uint keynr) /*!< : index number */
{
dict_index_t* index = innobase_get_index(keynr);
if (index && index->type & DICT_FTS) {
return("FULLTEXT");
} else {
return("BTREE");
}
}
/****************************************************************//**
Returns the table file name extension.
@return file extension string */
UNIV_INTERN
const char**
ha_innobase::bas_ext() const
/*========================*/
{
return(ha_innobase_exts);
}
/****************************************************************//**
Returns the operations supported for indexes.
@return flags of supported operations */
UNIV_INTERN
ulong
ha_innobase::index_flags(
/*=====================*/
uint key,
uint,
bool) const
{
return((table_share->key_info[key].algorithm == HA_KEY_ALG_FULLTEXT)
? 0
: (HA_READ_NEXT | HA_READ_PREV | HA_READ_ORDER
| HA_READ_RANGE | HA_KEYREAD_ONLY
| HA_DO_INDEX_COND_PUSHDOWN));
}
/****************************************************************//**
Returns the maximum number of keys.
@return MAX_KEY */
UNIV_INTERN
uint
ha_innobase::max_supported_keys() const
/*===================================*/
{
return(MAX_KEY);
}
/****************************************************************//**
Returns the maximum key length.
@return maximum supported key length, in bytes */
UNIV_INTERN
uint
ha_innobase::max_supported_key_length() const
/*=========================================*/
{
/* An InnoDB page must store >= 2 keys; a secondary key record
must also contain the primary key value. Therefore, if both
the primary key and the secondary key are at this maximum length,
it must be less than 1/4th of the free space on a page including
record overhead.
MySQL imposes its own limit to this number; MAX_KEY_LENGTH = 3072.
For page sizes = 16k, InnoDB historically reported 3500 bytes here,
But the MySQL limit of 3072 was always used through the handler
interface. */
switch (UNIV_PAGE_SIZE) {
case 4096:
return(768);
case 8192:
return(1536);
default:
return(3500);
}
}
/****************************************************************//**
Returns the key map of keys that are usable for scanning.
@return key_map_full */
UNIV_INTERN
const key_map*
ha_innobase::keys_to_use_for_scanning()
/*===================================*/
{
return(&key_map_full);
}
/****************************************************************//**
Determines if table caching is supported.
@return HA_CACHE_TBL_ASKTRANSACT */
UNIV_INTERN
uint8
ha_innobase::table_cache_type()
/*===========================*/
{
return(HA_CACHE_TBL_ASKTRANSACT);
}
/****************************************************************//**
Determines if the primary key is clustered index.
@return true */
UNIV_INTERN
bool
ha_innobase::primary_key_is_clustered()
/*===================================*/
{
return(true);
}
/*****************************************************************//**
Normalizes a table name string. A normalized name consists of the
database name catenated to '/' and table name. Example: test/mytable.
On Windows normalization puts both the database name and the
table name always to lower case if "set_lower_case" is set to TRUE. */
static
void
normalize_table_name_low(
/*=====================*/
char* norm_name, /*!< out: normalized name as a
null-terminated string */
const char* name, /*!< in: table name string */
ibool set_lower_case) /*!< in: TRUE if we want to set name
to lower case */
{
char* name_ptr;
ulint name_len;
char* db_ptr;
ulint db_len;
char* ptr;
ulint norm_len;
/* Scan name from the end */
ptr = strend(name) - 1;
/* seek to the last path separator */
while (ptr >= name && *ptr != '\\' && *ptr != '/') {
ptr--;
}
name_ptr = ptr + 1;
name_len = strlen(name_ptr);
/* skip any number of path separators */
while (ptr >= name && (*ptr == '\\' || *ptr == '/')) {
ptr--;
}
DBUG_ASSERT(ptr >= name);
/* seek to the last but one path separator or one char before
the beginning of name */
db_len = 0;
while (ptr >= name && *ptr != '\\' && *ptr != '/') {
ptr--;
db_len++;
}
db_ptr = ptr + 1;
norm_len = db_len + name_len + sizeof "/";
ut_a(norm_len < FN_REFLEN - 1);
memcpy(norm_name, db_ptr, db_len);
norm_name[db_len] = '/';
/* Copy the name and null-byte. */
memcpy(norm_name + db_len + 1, name_ptr, name_len + 1);
if (set_lower_case) {
innobase_casedn_str(norm_name);
}
}
#if !defined(DBUG_OFF)
/*********************************************************************
Test normalize_table_name_low(). */
static
void
test_normalize_table_name_low()
/*===========================*/
{
char norm_name[FN_REFLEN];
const char* test_data[][2] = {
/* input, expected result */
{"./mysqltest/t1", "mysqltest/t1"},
{"./test/#sql-842b_2", "test/#sql-842b_2"},
{"./test/#sql-85a3_10", "test/#sql-85a3_10"},
{"./test/#sql2-842b-2", "test/#sql2-842b-2"},
{"./test/bug29807", "test/bug29807"},
{"./test/foo", "test/foo"},
{"./test/innodb_bug52663", "test/innodb_bug52663"},
{"./test/t", "test/t"},
{"./test/t1", "test/t1"},
{"./test/t10", "test/t10"},
{"/a/b/db/table", "db/table"},
{"/a/b/db///////table", "db/table"},
{"/a/b////db///////table", "db/table"},
{"/var/tmp/mysqld.1/#sql842b_2_10", "mysqld.1/#sql842b_2_10"},
{"db/table", "db/table"},
{"ddd/t", "ddd/t"},
{"d/ttt", "d/ttt"},
{"d/t", "d/t"},
{".\\mysqltest\\t1", "mysqltest/t1"},
{".\\test\\#sql-842b_2", "test/#sql-842b_2"},
{".\\test\\#sql-85a3_10", "test/#sql-85a3_10"},
{".\\test\\#sql2-842b-2", "test/#sql2-842b-2"},
{".\\test\\bug29807", "test/bug29807"},
{".\\test\\foo", "test/foo"},
{".\\test\\innodb_bug52663", "test/innodb_bug52663"},
{".\\test\\t", "test/t"},
{".\\test\\t1", "test/t1"},
{".\\test\\t10", "test/t10"},
{"C:\\a\\b\\db\\table", "db/table"},
{"C:\\a\\b\\db\\\\\\\\\\\\\\table", "db/table"},
{"C:\\a\\b\\\\\\\\db\\\\\\\\\\\\\\table", "db/table"},
{"C:\\var\\tmp\\mysqld.1\\#sql842b_2_10", "mysqld.1/#sql842b_2_10"},
{"db\\table", "db/table"},
{"ddd\\t", "ddd/t"},
{"d\\ttt", "d/ttt"},
{"d\\t", "d/t"},
};
for (size_t i = 0; i < UT_ARR_SIZE(test_data); i++) {
printf("test_normalize_table_name_low(): "
"testing \"%s\", expected \"%s\"... ",
test_data[i][0], test_data[i][1]);
normalize_table_name_low(norm_name, test_data[i][0], FALSE);
if (strcmp(norm_name, test_data[i][1]) == 0) {
printf("ok\n");
} else {
printf("got \"%s\"\n", norm_name);
ut_error;
}
}
}
/*********************************************************************
Test ut_format_name(). */
static
void
test_ut_format_name()
/*=================*/
{
char buf[NAME_LEN * 3];
struct {
const char* name;
ibool is_table;
ulint buf_size;
const char* expected;
} test_data[] = {
{"test/t1", TRUE, sizeof(buf), "\"test\".\"t1\""},
{"test/t1", TRUE, 12, "\"test\".\"t1\""},
{"test/t1", TRUE, 11, "\"test\".\"t1"},
{"test/t1", TRUE, 10, "\"test\".\"t"},
{"test/t1", TRUE, 9, "\"test\".\""},
{"test/t1", TRUE, 8, "\"test\"."},
{"test/t1", TRUE, 7, "\"test\""},
{"test/t1", TRUE, 6, "\"test"},
{"test/t1", TRUE, 5, "\"tes"},
{"test/t1", TRUE, 4, "\"te"},
{"test/t1", TRUE, 3, "\"t"},
{"test/t1", TRUE, 2, "\""},
{"test/t1", TRUE, 1, ""},
{"test/t1", TRUE, 0, "BUF_NOT_CHANGED"},
{"table", TRUE, sizeof(buf), "\"table\""},
{"ta'le", TRUE, sizeof(buf), "\"ta'le\""},
{"ta\"le", TRUE, sizeof(buf), "\"ta\"\"le\""},
{"ta`le", TRUE, sizeof(buf), "\"ta`le\""},
{"index", FALSE, sizeof(buf), "\"index\""},
{"ind/ex", FALSE, sizeof(buf), "\"ind/ex\""},
};
for (size_t i = 0; i < UT_ARR_SIZE(test_data); i++) {
memcpy(buf, "BUF_NOT_CHANGED", strlen("BUF_NOT_CHANGED") + 1);
char* ret;
ret = ut_format_name(test_data[i].name,
test_data[i].is_table,
buf,
test_data[i].buf_size);
ut_a(ret == buf);
if (strcmp(buf, test_data[i].expected) == 0) {
fprintf(stderr,
"ut_format_name(%s, %s, buf, %lu), "
"expected %s, OK\n",
test_data[i].name,
test_data[i].is_table ? "TRUE" : "FALSE",
test_data[i].buf_size,
test_data[i].expected);
} else {
fprintf(stderr,
"ut_format_name(%s, %s, buf, %lu), "
"expected %s, ERROR: got %s\n",
test_data[i].name,
test_data[i].is_table ? "TRUE" : "FALSE",
test_data[i].buf_size,
test_data[i].expected,
buf);
ut_error;
}
}
}
#endif /* !DBUG_OFF */
/********************************************************************//**
Get the upper limit of the MySQL integral and floating-point type.
@return maximum allowed value for the field */
UNIV_INTERN
ulonglong
innobase_get_int_col_max_value(
/*===========================*/
const Field* field) /*!< in: MySQL field */
{
ulonglong max_value = 0;
switch (field->key_type()) {
/* TINY */
case HA_KEYTYPE_BINARY:
max_value = 0xFFULL;
break;
case HA_KEYTYPE_INT8:
max_value = 0x7FULL;
break;
/* SHORT */
case HA_KEYTYPE_USHORT_INT:
max_value = 0xFFFFULL;
break;
case HA_KEYTYPE_SHORT_INT:
max_value = 0x7FFFULL;
break;
/* MEDIUM */
case HA_KEYTYPE_UINT24:
max_value = 0xFFFFFFULL;
break;
case HA_KEYTYPE_INT24:
max_value = 0x7FFFFFULL;
break;
/* LONG */
case HA_KEYTYPE_ULONG_INT:
max_value = 0xFFFFFFFFULL;
break;
case HA_KEYTYPE_LONG_INT:
max_value = 0x7FFFFFFFULL;
break;
/* BIG */
case HA_KEYTYPE_ULONGLONG:
max_value = 0xFFFFFFFFFFFFFFFFULL;
break;
case HA_KEYTYPE_LONGLONG:
max_value = 0x7FFFFFFFFFFFFFFFULL;
break;
case HA_KEYTYPE_FLOAT:
/* We use the maximum as per IEEE754-2008 standard, 2^24 */
max_value = 0x1000000ULL;
break;
case HA_KEYTYPE_DOUBLE:
/* We use the maximum as per IEEE754-2008 standard, 2^53 */
max_value = 0x20000000000000ULL;
break;
default:
ut_error;
}
return(max_value);
}
/*******************************************************************//**
This function checks whether the index column information
is consistent between KEY info from mysql and that from innodb index.
@return TRUE if all column types match. */
static
ibool
innobase_match_index_columns(
/*=========================*/
const KEY* key_info, /*!< in: Index info
from mysql */
const dict_index_t* index_info) /*!< in: Index info
from Innodb */
{
const KEY_PART_INFO* key_part;
const KEY_PART_INFO* key_end;
const dict_field_t* innodb_idx_fld;
const dict_field_t* innodb_idx_fld_end;
DBUG_ENTER("innobase_match_index_columns");
/* Check whether user defined index column count matches */
if (key_info->user_defined_key_parts !=
index_info->n_user_defined_cols) {
DBUG_RETURN(FALSE);
}
key_part = key_info->key_part;
key_end = key_part + key_info->user_defined_key_parts;
innodb_idx_fld = index_info->fields;
innodb_idx_fld_end = index_info->fields + index_info->n_fields;
/* Check each index column's datatype. We do not check
column name because there exists case that index
column name got modified in mysql but such change does not
propagate to InnoDB.
One hidden assumption here is that the index column sequences
are matched up between those in mysql and Innodb. */
for (; key_part != key_end; ++key_part) {
ulint col_type;
ibool is_unsigned;
ulint mtype = innodb_idx_fld->col->mtype;
/* Need to translate to InnoDB column type before
comparison. */
col_type = get_innobase_type_from_mysql_type(&is_unsigned,
key_part->field);
/* Ignore Innodb specific system columns. */
while (mtype == DATA_SYS) {
innodb_idx_fld++;
if (innodb_idx_fld >= innodb_idx_fld_end) {
DBUG_RETURN(FALSE);
}
}
if (col_type != mtype) {
/* Column Type mismatches */
DBUG_RETURN(FALSE);
}
innodb_idx_fld++;
}
DBUG_RETURN(TRUE);
}
/*******************************************************************//**
This function builds a translation table in INNOBASE_SHARE
structure for fast index location with mysql array number from its
table->key_info structure. This also provides the necessary translation
between the key order in mysql key_info and Innodb ib_table->indexes if
they are not fully matched with each other.
Note we do not have any mutex protecting the translation table
building based on the assumption that there is no concurrent
index creation/drop and DMLs that requires index lookup. All table
handle will be closed before the index creation/drop.
@return TRUE if index translation table built successfully */
static
ibool
innobase_build_index_translation(
/*=============================*/
const TABLE* table, /*!< in: table in MySQL data
dictionary */
dict_table_t* ib_table,/*!< in: table in Innodb data
dictionary */
INNOBASE_SHARE* share) /*!< in/out: share structure
where index translation table
will be constructed in. */
{
ulint mysql_num_index;
ulint ib_num_index;
dict_index_t** index_mapping;
ibool ret = TRUE;
DBUG_ENTER("innobase_build_index_translation");
mutex_enter(&dict_sys->mutex);
mysql_num_index = table->s->keys;
ib_num_index = UT_LIST_GET_LEN(ib_table->indexes);
index_mapping = share->idx_trans_tbl.index_mapping;
/* If there exists inconsistency between MySQL and InnoDB dictionary
(metadata) information, the number of index defined in MySQL
could exceed that in InnoDB, do not build index translation
table in such case */
if (UNIV_UNLIKELY(ib_num_index < mysql_num_index)) {
ret = FALSE;
goto func_exit;
}
/* If index entry count is non-zero, nothing has
changed since last update, directly return TRUE */
if (share->idx_trans_tbl.index_count) {
/* Index entry count should still match mysql_num_index */
ut_a(share->idx_trans_tbl.index_count == mysql_num_index);
goto func_exit;
}
/* The number of index increased, rebuild the mapping table */
if (mysql_num_index > share->idx_trans_tbl.array_size) {
index_mapping = (dict_index_t**) my_realloc(index_mapping,
mysql_num_index *
sizeof(*index_mapping),
MYF(MY_ALLOW_ZERO_PTR));
if (!index_mapping) {
/* Report an error if index_mapping continues to be
NULL and mysql_num_index is a non-zero value */
sql_print_error("InnoDB: fail to allocate memory for "
"index translation table. Number of "
"Index:%lu, array size:%lu",
mysql_num_index,
share->idx_trans_tbl.array_size);
ret = FALSE;
goto func_exit;
}
share->idx_trans_tbl.array_size = mysql_num_index;
}
/* For each index in the mysql key_info array, fetch its
corresponding InnoDB index pointer into index_mapping
array. */
for (ulint count = 0; count < mysql_num_index; count++) {
/* Fetch index pointers into index_mapping according to mysql
index sequence */
index_mapping[count] = dict_table_get_index_on_name(
ib_table, table->key_info[count].name);
if (!index_mapping[count]) {
sql_print_error("Cannot find index %s in InnoDB "
"index dictionary.",
table->key_info[count].name);
ret = FALSE;
goto func_exit;
}
/* Double check fetched index has the same
column info as those in mysql key_info. */
if (!innobase_match_index_columns(&table->key_info[count],
index_mapping[count])) {
sql_print_error("Found index %s whose column info "
"does not match that of MySQL.",
table->key_info[count].name);
ret = FALSE;
goto func_exit;
}
}
/* Successfully built the translation table */
share->idx_trans_tbl.index_count = mysql_num_index;
func_exit:
if (!ret) {
/* Build translation table failed. */
my_free(index_mapping);
share->idx_trans_tbl.array_size = 0;
share->idx_trans_tbl.index_count = 0;
index_mapping = NULL;
}
share->idx_trans_tbl.index_mapping = index_mapping;
mutex_exit(&dict_sys->mutex);
DBUG_RETURN(ret);
}
/*******************************************************************//**
This function uses index translation table to quickly locate the
requested index structure.
Note we do not have mutex protection for the index translatoin table
access, it is based on the assumption that there is no concurrent
translation table rebuild (fter create/drop index) and DMLs that
require index lookup.
@return dict_index_t structure for requested index. NULL if
fail to locate the index structure. */
static
dict_index_t*
innobase_index_lookup(
/*==================*/
INNOBASE_SHARE* share, /*!< in: share structure for index
translation table. */
uint keynr) /*!< in: index number for the requested
index */
{
if (!share->idx_trans_tbl.index_mapping
|| keynr >= share->idx_trans_tbl.index_count) {
return(NULL);
}
return(share->idx_trans_tbl.index_mapping[keynr]);
}
/************************************************************************
Set the autoinc column max value. This should only be called once from
ha_innobase::open(). Therefore there's no need for a covering lock. */
UNIV_INTERN
void
ha_innobase::innobase_initialize_autoinc()
/*======================================*/
{
ulonglong auto_inc;
const Field* field = table->found_next_number_field;
if (field != NULL) {
auto_inc = innobase_get_int_col_max_value(field);
} else {
/* We have no idea what's been passed in to us as the
autoinc column. We set it to the 0, effectively disabling
updates to the table. */
auto_inc = 0;
ut_print_timestamp(stderr);
fprintf(stderr, " InnoDB: Unable to determine the AUTOINC "
"column name\n");
}
if (srv_force_recovery >= SRV_FORCE_NO_IBUF_MERGE) {
/* If the recovery level is set so high that writes
are disabled we force the AUTOINC counter to 0
value effectively disabling writes to the table.
Secondly, we avoid reading the table in case the read
results in failure due to a corrupted table/index.
We will not return an error to the client, so that the
tables can be dumped with minimal hassle. If an error
were returned in this case, the first attempt to read
the table would fail and subsequent SELECTs would succeed. */
auto_inc = 0;
} else if (field == NULL) {
/* This is a far more serious error, best to avoid
opening the table and return failure. */
my_error(ER_AUTOINC_READ_FAILED, MYF(0));
} else {
dict_index_t* index;
const char* col_name;
ib_uint64_t read_auto_inc;
ulint err;
update_thd(ha_thd());
ut_a(prebuilt->trx == thd_to_trx(user_thd));
col_name = field->field_name;
index = innobase_get_index(table->s->next_number_index);
/* Execute SELECT MAX(col_name) FROM TABLE; */
err = row_search_max_autoinc(index, col_name, &read_auto_inc);
switch (err) {
case DB_SUCCESS: {
ulonglong col_max_value;
col_max_value = innobase_get_int_col_max_value(field);
/* At the this stage we do not know the increment
nor the offset, so use a default increment of 1. */
auto_inc = innobase_next_autoinc(
read_auto_inc, 1, 1, 0, col_max_value);
break;
}
case DB_RECORD_NOT_FOUND:
ut_print_timestamp(stderr);
fprintf(stderr, " InnoDB: MySQL and InnoDB data "
"dictionaries are out of sync.\n"
"InnoDB: Unable to find the AUTOINC column "
"%s in the InnoDB table %s.\n"
"InnoDB: We set the next AUTOINC column "
"value to 0,\n"
"InnoDB: in effect disabling the AUTOINC "
"next value generation.\n"
"InnoDB: You can either set the next "
"AUTOINC value explicitly using ALTER TABLE\n"
"InnoDB: or fix the data dictionary by "
"recreating the table.\n",
col_name, index->table->name);
/* This will disable the AUTOINC generation. */
auto_inc = 0;
/* We want the open to succeed, so that the user can
take corrective action. ie. reads should succeed but
updates should fail. */
err = DB_SUCCESS;
break;
default:
/* row_search_max_autoinc() should only return
one of DB_SUCCESS or DB_RECORD_NOT_FOUND. */
ut_error;
}
}
dict_table_autoinc_initialize(prebuilt->table, auto_inc);
}
/*****************************************************************//**
Creates and opens a handle to a table which already exists in an InnoDB
database.
@return 1 if error, 0 if success */
UNIV_INTERN
int
ha_innobase::open(
/*==============*/
const char* name, /*!< in: table name */
int mode, /*!< in: not used */
uint test_if_locked) /*!< in: not used */
{
dict_table_t* ib_table;
char norm_name[FN_REFLEN];
THD* thd;
char* is_part = NULL;
ibool par_case_name_set = FALSE;
char par_case_name[FN_REFLEN];
dict_err_ignore_t ignore_err = DICT_ERR_IGNORE_NONE;
DBUG_ENTER("ha_innobase::open");
UT_NOT_USED(mode);
UT_NOT_USED(test_if_locked);
thd = ha_thd();
/* Under some cases MySQL seems to call this function while
holding btr_search_latch. This breaks the latching order as
we acquire dict_sys->mutex below and leads to a deadlock. */
if (thd != NULL) {
innobase_release_temporary_latches(ht, thd);
}
normalize_table_name(norm_name, name);
user_thd = NULL;
if (!(share=get_share(name))) {
DBUG_RETURN(1);
}
/* Will be allocated if it is needed in ::update_row() */
upd_buf = NULL;
upd_buf_size = 0;
/* We look for pattern #P# to see if the table is partitioned
MySQL table. */
#ifdef __WIN__
is_part = strstr(norm_name, "#p#");
#else
is_part = strstr(norm_name, "#P#");
#endif /* __WIN__ */
/* Check whether FOREIGN_KEY_CHECKS is set to 0. If so, the table
can be opened even if some FK indexes are missing. If not, the table
can't be opened in the same situation */
if (thd_test_options(thd, OPTION_NO_FOREIGN_KEY_CHECKS)) {
ignore_err = DICT_ERR_IGNORE_FK_NOKEY;
}
/* Get pointer to a table object in InnoDB dictionary cache */
ib_table = dict_table_open_on_name(norm_name, FALSE, TRUE, ignore_err);
if (ib_table
&& ((!DICT_TF2_FLAG_IS_SET(ib_table, DICT_TF2_FTS_HAS_DOC_ID)
&& table->s->fields != dict_table_get_n_user_cols(ib_table))
|| (DICT_TF2_FLAG_IS_SET(ib_table, DICT_TF2_FTS_HAS_DOC_ID)
&& (table->s->fields
!= dict_table_get_n_user_cols(ib_table) - 1)))) {
ib_logf(IB_LOG_LEVEL_WARN,
"table %s contains %lu user defined columns "
"in InnoDB, but %lu columns in MySQL. Please "
"check INFORMATION_SCHEMA.INNODB_SYS_COLUMNS and "
REFMAN "innodb-troubleshooting.html "
"for how to resolve it",
norm_name, (ulong) dict_table_get_n_user_cols(ib_table),
(ulong) table->s->fields);
/* Mark this table as corrupted, so the drop table
or force recovery can still use it, but not others. */
ib_table->corrupted = true;
dict_table_close(ib_table, FALSE, FALSE);
ib_table = NULL;
is_part = NULL;
}
if (NULL == ib_table) {
if (is_part) {
/* MySQL partition engine hard codes the file name
separator as "#P#". The text case is fixed even if
lower_case_table_names is set to 1 or 2. This is true
for sub-partition names as well. InnoDB always
normalises file names to lower case on Windows, this
can potentially cause problems when copying/moving
tables between platforms.
1) If boot against an installation from Windows
platform, then its partition table name could
be in lower case in system tables. So we will
need to check lower case name when load table.
2) If we boot an installation from other case
sensitive platform in Windows, we might need to
check the existence of table name without lower
case in the system table. */
if (innobase_get_lower_case_table_names() == 1) {
if (!par_case_name_set) {
#ifndef __WIN__
/* Check for the table using lower
case name, including the partition
separator "P" */
strcpy(par_case_name, norm_name);
innobase_casedn_str(par_case_name);
#else
/* On Windows platfrom, check
whether there exists table name in
system table whose name is
not being normalized to lower case */
normalize_table_name_low(
par_case_name, name, FALSE);
#endif
par_case_name_set = TRUE;
}
ib_table = dict_table_open_on_name(
par_case_name, FALSE, TRUE,
ignore_err);
}
if (ib_table) {
#ifndef __WIN__
sql_print_warning("Partition table %s opened "
"after converting to lower "
"case. The table may have "
"been moved from a case "
"in-sensitive file system. "
"Please recreate table in "
"the current file system\n",
norm_name);
#else
sql_print_warning("Partition table %s opened "
"after skipping the step to "
"lower case the table name. "
"The table may have been "
"moved from a case sensitive "
"file system. Please "
"recreate table in the "
"current file system\n",
norm_name);
#endif
goto table_opened;
}
}
if (is_part) {
sql_print_error("Failed to open table %s.\n",
norm_name);
}
ib_logf(IB_LOG_LEVEL_WARN,
"Cannot open table %s from the internal data "
"dictionary of InnoDB though the .frm file "
"for the table exists. See "
REFMAN "innodb-troubleshooting.html for how "
"you can resolve the problem.", norm_name);
free_share(share);
my_errno = ENOENT;
DBUG_RETURN(HA_ERR_NO_SUCH_TABLE);
}
table_opened:
innobase_copy_frm_flags_from_table_share(ib_table, table->s);
dict_stats_init(ib_table);
MONITOR_INC(MONITOR_TABLE_OPEN);
bool no_tablespace;
if (dict_table_is_discarded(ib_table)) {
ib_senderrf(thd,
IB_LOG_LEVEL_WARN, ER_TABLESPACE_DISCARDED,
table->s->table_name.str);
/* Allow an open because a proper DISCARD should have set
all the flags and index root page numbers to FIL_NULL that
should prevent any DML from running but it should allow DDL
operations. */
no_tablespace = false;
} else if (ib_table->ibd_file_missing) {
ib_senderrf(
thd, IB_LOG_LEVEL_WARN,
ER_TABLESPACE_MISSING, norm_name);
/* This means we have no idea what happened to the tablespace
file, best to play it safe. */
no_tablespace = true;
} else {
no_tablespace = false;
}
if (!thd_tablespace_op(thd) && no_tablespace) {
free_share(share);
my_errno = ENOENT;
dict_table_close(ib_table, FALSE, FALSE);
DBUG_RETURN(HA_ERR_NO_SUCH_TABLE);
}
prebuilt = row_create_prebuilt(ib_table, table->s->reclength);
prebuilt->default_rec = table->s->default_values;
ut_ad(prebuilt->default_rec);
/* Looks like MySQL-3.23 sometimes has primary key number != 0 */
primary_key = table->s->primary_key;
key_used_on_scan = primary_key;
if (!innobase_build_index_translation(table, ib_table, share)) {
sql_print_error("Build InnoDB index translation table for"
" Table %s failed", name);
}
/* Allocate a buffer for a 'row reference'. A row reference is
a string of bytes of length ref_length which uniquely specifies
a row in our table. Note that MySQL may also compare two row
references for equality by doing a simple memcmp on the strings
of length ref_length! */
if (!row_table_got_default_clust_index(ib_table)) {
prebuilt->clust_index_was_generated = FALSE;
if (UNIV_UNLIKELY(primary_key >= MAX_KEY)) {
sql_print_error("Table %s has a primary key in "
"InnoDB data dictionary, but not "
"in MySQL!", name);
/* This mismatch could cause further problems
if not attended, bring this to the user's attention
by printing a warning in addition to log a message
in the errorlog */
push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
ER_NO_SUCH_INDEX,
"InnoDB: Table %s has a "
"primary key in InnoDB data "
"dictionary, but not in "
"MySQL!", name);
/* If primary_key >= MAX_KEY, its (primary_key)
value could be out of bound if continue to index
into key_info[] array. Find InnoDB primary index,
and assign its key_length to ref_length.
In addition, since MySQL indexes are sorted starting
with primary index, unique index etc., initialize
ref_length to the first index key length in
case we fail to find InnoDB cluster index.
Please note, this will not resolve the primary
index mismatch problem, other side effects are
possible if users continue to use the table.
However, we allow this table to be opened so
that user can adopt necessary measures for the
mismatch while still being accessible to the table
date. */
if (!table->key_info) {
ut_ad(!table->s->keys);
ref_length = 0;
} else {
ref_length = table->key_info[0].key_length;
}
/* Find corresponding cluster index
key length in MySQL's key_info[] array */
for (uint i = 0; i < table->s->keys; i++) {
dict_index_t* index;
index = innobase_get_index(i);
if (dict_index_is_clust(index)) {
ref_length =
table->key_info[i].key_length;
}
}
} else {
/* MySQL allocates the buffer for ref.
key_info->key_length includes space for all key
columns + one byte for each column that may be
NULL. ref_length must be as exact as possible to
save space, because all row reference buffers are
allocated based on ref_length. */
ref_length = table->key_info[primary_key].key_length;
}
} else {
if (primary_key != MAX_KEY) {
sql_print_error(
"Table %s has no primary key in InnoDB data "
"dictionary, but has one in MySQL! If you "
"created the table with a MySQL version < "
"3.23.54 and did not define a primary key, "
"but defined a unique key with all non-NULL "
"columns, then MySQL internally treats that "
"key as the primary key. You can fix this "
"error by dump + DROP + CREATE + reimport "
"of the table.", name);
/* This mismatch could cause further problems
if not attended, bring this to the user attention
by printing a warning in addition to log a message
in the errorlog */
push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
ER_NO_SUCH_INDEX,
"InnoDB: Table %s has no "
"primary key in InnoDB data "
"dictionary, but has one in "
"MySQL!", name);
}
prebuilt->clust_index_was_generated = TRUE;
ref_length = DATA_ROW_ID_LEN;
/* If we automatically created the clustered index, then
MySQL does not know about it, and MySQL must NOT be aware
of the index used on scan, to make it avoid checking if we
update the column of the index. That is why we assert below
that key_used_on_scan is the undefined value MAX_KEY.
The column is the row id in the automatical generation case,
and it will never be updated anyway. */
if (key_used_on_scan != MAX_KEY) {
sql_print_warning(
"Table %s key_used_on_scan is %lu even "
"though there is no primary key inside "
"InnoDB.", name, (ulong) key_used_on_scan);
}
}
/* Index block size in InnoDB: used by MySQL in query optimization */
stats.block_size = UNIV_PAGE_SIZE;
/* Init table lock structure */
thr_lock_data_init(&share->lock,&lock,(void*) 0);
if (prebuilt->table) {
/* We update the highest file format in the system table
space, if this table has higher file format setting. */
trx_sys_file_format_max_upgrade(
(const char**) &innobase_file_format_max,
dict_table_get_format(prebuilt->table));
}
/* Only if the table has an AUTOINC column. */
if (prebuilt->table != NULL
&& !prebuilt->table->ibd_file_missing
&& table->found_next_number_field != NULL) {
dict_table_autoinc_lock(prebuilt->table);
/* Since a table can already be "open" in InnoDB's internal
data dictionary, we only init the autoinc counter once, the
first time the table is loaded. We can safely reuse the
autoinc value from a previous MySQL open. */
if (dict_table_autoinc_read(prebuilt->table) == 0) {
innobase_initialize_autoinc();
}
dict_table_autoinc_unlock(prebuilt->table);
}
info(HA_STATUS_NO_LOCK | HA_STATUS_VARIABLE | HA_STATUS_CONST);
DBUG_RETURN(0);
}
UNIV_INTERN
handler*
ha_innobase::clone(
/*===============*/
const char* name, /*!< in: table name */
MEM_ROOT* mem_root) /*!< in: memory context */
{
ha_innobase* new_handler;
DBUG_ENTER("ha_innobase::clone");
new_handler = static_cast<ha_innobase*>(handler::clone(name,
mem_root));
if (new_handler) {
DBUG_ASSERT(new_handler->prebuilt != NULL);
new_handler->prebuilt->select_lock_type
= prebuilt->select_lock_type;
}
DBUG_RETURN(new_handler);
}
UNIV_INTERN
uint
ha_innobase::max_supported_key_part_length() const
/*==============================================*/
{
/* A table format specific index column length check will be performed
at ha_innobase::add_index() and row_create_index_for_mysql() */
return(innobase_large_prefix
? REC_VERSION_56_MAX_INDEX_COL_LEN
: REC_ANTELOPE_MAX_INDEX_COL_LEN - 1);
}
/******************************************************************//**
Closes a handle to an InnoDB table.
@return 0 */
UNIV_INTERN
int
ha_innobase::close()
/*================*/
{
THD* thd;
DBUG_ENTER("ha_innobase::close");
thd = ha_thd();
if (thd != NULL) {
innobase_release_temporary_latches(ht, thd);
}
row_prebuilt_free(prebuilt, FALSE);
if (upd_buf != NULL) {
ut_ad(upd_buf_size != 0);
my_free(upd_buf);
upd_buf = NULL;
upd_buf_size = 0;
}
free_share(share);
MONITOR_INC(MONITOR_TABLE_CLOSE);
/* Tell InnoDB server that there might be work for
utility threads: */
srv_active_wake_master_thread();
DBUG_RETURN(0);
}
/* The following accessor functions should really be inside MySQL code! */
/**************************************************************//**
Gets field offset for a field in a table.
@return offset */
static inline
uint
get_field_offset(
/*=============*/
const TABLE* table, /*!< in: MySQL table object */
const Field* field) /*!< in: MySQL field object */
{
return((uint) (field->ptr - table->record[0]));
}
/*************************************************************//**
InnoDB uses this function to compare two data fields for which the data type
is such that we must use MySQL code to compare them. NOTE that the prototype
of this function is in rem0cmp.cc in InnoDB source code! If you change this
function, remember to update the prototype there!
@return 1, 0, -1, if a is greater, equal, less than b, respectively */
UNIV_INTERN
int
innobase_mysql_cmp(
/*===============*/
int mysql_type, /*!< in: MySQL type */
uint charset_number, /*!< in: number of the charset */
const unsigned char* a, /*!< in: data field */
unsigned int a_length, /*!< in: data field length,
not UNIV_SQL_NULL */
const unsigned char* b, /*!< in: data field */
unsigned int b_length) /*!< in: data field length,
not UNIV_SQL_NULL */
{
CHARSET_INFO* charset;
enum_field_types mysql_tp;
int ret;
DBUG_ASSERT(a_length != UNIV_SQL_NULL);
DBUG_ASSERT(b_length != UNIV_SQL_NULL);
mysql_tp = (enum_field_types) mysql_type;
switch (mysql_tp) {
case MYSQL_TYPE_BIT:
case MYSQL_TYPE_STRING:
case MYSQL_TYPE_VAR_STRING:
case MYSQL_TYPE_TINY_BLOB:
case MYSQL_TYPE_MEDIUM_BLOB:
case MYSQL_TYPE_BLOB:
case MYSQL_TYPE_LONG_BLOB:
case MYSQL_TYPE_VARCHAR:
/* Use the charset number to pick the right charset struct for
the comparison. Since the MySQL function get_charset may be
slow before Bar removes the mutex operation there, we first
look at 2 common charsets directly. */
if (charset_number == default_charset_info->number) {
charset = default_charset_info;
} else if (charset_number == my_charset_latin1.number) {
charset = &my_charset_latin1;
} else {
charset = get_charset(charset_number, MYF(MY_WME));
if (charset == NULL) {
sql_print_error("InnoDB needs charset %lu for doing "
"a comparison, but MySQL cannot "
"find that charset.",
(ulong) charset_number);
ut_a(0);
}
}
/* Starting from 4.1.3, we use strnncollsp() in comparisons of
non-latin1_swedish_ci strings. NOTE that the collation order
changes then: 'b\0\0...' is ordered BEFORE 'b ...'. Users
having indexes on such data need to rebuild their tables! */
ret = charset->coll->strnncollsp(
charset, a, a_length, b, b_length, 0);
if (ret < 0) {
return(-1);
} else if (ret > 0) {
return(1);
} else {
return(0);
}
default:
ut_error;
}
return(0);
}
/*************************************************************//**
Get the next token from the given string and store it in *token. */
UNIV_INTERN
CHARSET_INFO*
innobase_get_fts_charset(
/*=====================*/
int mysql_type, /*!< in: MySQL type */
uint charset_number) /*!< in: number of the charset */
{
enum_field_types mysql_tp;
CHARSET_INFO* charset;
mysql_tp = (enum_field_types) mysql_type;
switch (mysql_tp) {
case MYSQL_TYPE_BIT:
case MYSQL_TYPE_STRING:
case MYSQL_TYPE_VAR_STRING:
case MYSQL_TYPE_TINY_BLOB:
case MYSQL_TYPE_MEDIUM_BLOB:
case MYSQL_TYPE_BLOB:
case MYSQL_TYPE_LONG_BLOB:
case MYSQL_TYPE_VARCHAR:
/* Use the charset number to pick the right charset struct for
the comparison. Since the MySQL function get_charset may be
slow before Bar removes the mutex operation there, we first
look at 2 common charsets directly. */
if (charset_number == default_charset_info->number) {
charset = default_charset_info;
} else if (charset_number == my_charset_latin1.number) {
charset = &my_charset_latin1;
} else {
charset = get_charset(charset_number, MYF(MY_WME));
if (charset == NULL) {
sql_print_error("InnoDB needs charset %lu for doing "
"a comparison, but MySQL cannot "
"find that charset.",
(ulong) charset_number);
ut_a(0);
}
}
break;
default:
ut_error;
}
return(charset);
}
/*************************************************************//**
InnoDB uses this function to compare two data fields for which the data type
is such that we must use MySQL code to compare them. NOTE that the prototype
of this function is in rem0cmp.c in InnoDB source code! If you change this
function, remember to update the prototype there!
@return 1, 0, -1, if a is greater, equal, less than b, respectively */
UNIV_INTERN
int
innobase_mysql_cmp_prefix(
/*======================*/
int mysql_type, /*!< in: MySQL type */
uint charset_number, /*!< in: number of the charset */
const unsigned char* a, /*!< in: data field */
unsigned int a_length, /*!< in: data field length,
not UNIV_SQL_NULL */
const unsigned char* b, /*!< in: data field */
unsigned int b_length) /*!< in: data field length,
not UNIV_SQL_NULL */
{
CHARSET_INFO* charset;
int result;
charset = innobase_get_fts_charset(mysql_type, charset_number);
result = ha_compare_text(charset, (uchar*) a, a_length,
(uchar*) b, b_length, 1, 0);
return(result);
}
/******************************************************************//**
compare two character string according to their charset. */
UNIV_INTERN
int
innobase_fts_text_cmp(
/*==================*/
const void* cs, /*!< in: Character set */
const void* p1, /*!< in: key */
const void* p2) /*!< in: node */
{
const CHARSET_INFO* charset = (const CHARSET_INFO*) cs;
const fts_string_t* s1 = (const fts_string_t*) p1;
const fts_string_t* s2 = (const fts_string_t*) p2;
return(ha_compare_text(
charset, s1->f_str, static_cast<uint>(s1->f_len),
s2->f_str, static_cast<uint>(s2->f_len), 0, 0));
}
/******************************************************************//**
compare two character string case insensitively according to their charset. */
UNIV_INTERN
int
innobase_fts_text_case_cmp(
/*=======================*/
const void* cs, /*!< in: Character set */
const void* p1, /*!< in: key */
const void* p2) /*!< in: node */
{
const CHARSET_INFO* charset = (const CHARSET_INFO*) cs;
const fts_string_t* s1 = (const fts_string_t*) p1;
const fts_string_t* s2 = (const fts_string_t*) p2;
ulint newlen;
my_casedn_str(charset, (char*) s2->f_str);
newlen = strlen((const char*) s2->f_str);
return(ha_compare_text(
charset, s1->f_str, static_cast<uint>(s1->f_len),
s2->f_str, static_cast<uint>(newlen), 0, 0));
}
/******************************************************************//**
Get the first character's code position for FTS index partition. */
UNIV_INTERN
ulint
innobase_strnxfrm(
/*==============*/
const CHARSET_INFO*
cs, /*!< in: Character set */
const uchar* str, /*!< in: string */
const ulint len) /*!< in: string length */
{
uchar mystr[2];
ulint value;
if (!str || len == 0) {
return(0);
}
my_strnxfrm(cs, (uchar*) mystr, 2, str, len);
value = mach_read_from_2(mystr);
if (value > 255) {
value = value / 256;
}
return(value);
}
/******************************************************************//**
compare two character string according to their charset. */
UNIV_INTERN
int
innobase_fts_text_cmp_prefix(
/*=========================*/
const void* cs, /*!< in: Character set */
const void* p1, /*!< in: prefix key */
const void* p2) /*!< in: value to compare */
{
const CHARSET_INFO* charset = (const CHARSET_INFO*) cs;
const fts_string_t* s1 = (const fts_string_t*) p1;
const fts_string_t* s2 = (const fts_string_t*) p2;
int result;
result = ha_compare_text(
charset, s2->f_str, static_cast<uint>(s2->f_len),
s1->f_str, static_cast<uint>(s1->f_len), 1, 0);
/* We switched s1, s2 position in ha_compare_text. So we need
to negate the result */
return(-result);
}
/******************************************************************//**
Makes all characters in a string lower case. */
UNIV_INTERN
size_t
innobase_fts_casedn_str(
/*====================*/
CHARSET_INFO* cs, /*!< in: Character set */
char* src, /*!< in: string to put in lower case */
size_t src_len,/*!< in: input string length */
char* dst, /*!< in: buffer for result string */
size_t dst_len)/*!< in: buffer size */
{
if (cs->casedn_multiply == 1) {
memcpy(dst, src, src_len);
dst[src_len] = 0;
my_casedn_str(cs, dst);
return(strlen(dst));
} else {
return(cs->cset->casedn(cs, src, src_len, dst, dst_len));
}
}
#define true_word_char(c, ch) ((c) & (_MY_U | _MY_L | _MY_NMR) || (ch) == '_')
#define misc_word_char(X) 0
/*************************************************************//**
Get the next token from the given string and store it in *token.
It is mostly copied from MyISAM's doc parsing function ft_simple_get_word()
@return length of string processed */
UNIV_INTERN
ulint
innobase_mysql_fts_get_token(
/*=========================*/
CHARSET_INFO* cs, /*!< in: Character set */
const byte* start, /*!< in: start of text */
const byte* end, /*!< in: one character past end of
text */
fts_string_t* token, /*!< out: token's text */
ulint* offset) /*!< out: offset to token,
measured as characters from
'start' */
{
int mbl;
const uchar* doc = start;
ut_a(cs);
token->f_n_char = token->f_len = 0;
token->f_str = NULL;
for (;;) {
if (doc >= end) {
return(doc - start);
}
int ctype;
mbl = cs->cset->ctype(
cs, &ctype, doc, (const uchar*) end);
if (true_word_char(ctype, *doc)) {
break;
}
doc += mbl > 0 ? mbl : (mbl < 0 ? -mbl : 1);
}
ulint mwc = 0;
ulint length = 0;
token->f_str = const_cast<byte*>(doc);
while (doc < end) {
int ctype;
mbl = cs->cset->ctype(
cs, &ctype, (uchar*) doc, (uchar*) end);
if (true_word_char(ctype, *doc)) {
mwc = 0;
} else if (!misc_word_char(*doc) || mwc) {
break;
} else {
++mwc;
}
++length;
doc += mbl > 0 ? mbl : (mbl < 0 ? -mbl : 1);
}
token->f_len = (uint) (doc - token->f_str) - mwc;
token->f_n_char = length;
return(doc - start);
}
/**************************************************************//**
Converts a MySQL type to an InnoDB type. Note that this function returns
the 'mtype' of InnoDB. InnoDB differentiates between MySQL's old <= 4.1
VARCHAR and the new true VARCHAR in >= 5.0.3 by the 'prtype'.
@return DATA_BINARY, DATA_VARCHAR, ... */
UNIV_INTERN
ulint
get_innobase_type_from_mysql_type(
/*==============================*/
ulint* unsigned_flag, /*!< out: DATA_UNSIGNED if an
'unsigned type';
at least ENUM and SET,
and unsigned integer
types are 'unsigned types' */
const void* f) /*!< in: MySQL Field */
{
const class Field* field = reinterpret_cast<const class Field*>(f);
/* The following asserts try to check that the MySQL type code fits in
8 bits: this is used in ibuf and also when DATA_NOT_NULL is ORed to
the type */
DBUG_ASSERT((ulint)MYSQL_TYPE_STRING < 256);
DBUG_ASSERT((ulint)MYSQL_TYPE_VAR_STRING < 256);
DBUG_ASSERT((ulint)MYSQL_TYPE_DOUBLE < 256);
DBUG_ASSERT((ulint)MYSQL_TYPE_FLOAT < 256);
DBUG_ASSERT((ulint)MYSQL_TYPE_DECIMAL < 256);
if (field->flags & UNSIGNED_FLAG) {
*unsigned_flag = DATA_UNSIGNED;
} else {
*unsigned_flag = 0;
}
if (field->real_type() == MYSQL_TYPE_ENUM
|| field->real_type() == MYSQL_TYPE_SET) {
/* MySQL has field->type() a string type for these, but the
data is actually internally stored as an unsigned integer
code! */
*unsigned_flag = DATA_UNSIGNED; /* MySQL has its own unsigned
flag set to zero, even though
internally this is an unsigned
integer type */
return(DATA_INT);
}
switch (field->type()) {
/* NOTE that we only allow string types in DATA_MYSQL and
DATA_VARMYSQL */
case MYSQL_TYPE_VAR_STRING: /* old <= 4.1 VARCHAR */
case MYSQL_TYPE_VARCHAR: /* new >= 5.0.3 true VARCHAR */
if (field->binary()) {
return(DATA_BINARY);
} else if (strcmp(field->charset()->name,
"latin1_swedish_ci") == 0) {
return(DATA_VARCHAR);
} else {
return(DATA_VARMYSQL);
}
case MYSQL_TYPE_BIT:
case MYSQL_TYPE_STRING: if (field->binary()) {
return(DATA_FIXBINARY);
} else if (strcmp(field->charset()->name,
"latin1_swedish_ci") == 0) {
return(DATA_CHAR);
} else {
return(DATA_MYSQL);
}
case MYSQL_TYPE_NEWDECIMAL:
return(DATA_FIXBINARY);
case MYSQL_TYPE_LONG:
case MYSQL_TYPE_LONGLONG:
case MYSQL_TYPE_TINY:
case MYSQL_TYPE_SHORT:
case MYSQL_TYPE_INT24:
case MYSQL_TYPE_DATE:
case MYSQL_TYPE_YEAR:
case MYSQL_TYPE_NEWDATE:
return(DATA_INT);
case MYSQL_TYPE_TIME:
case MYSQL_TYPE_DATETIME:
case MYSQL_TYPE_TIMESTAMP:
switch (field->real_type()) {
case MYSQL_TYPE_TIME:
case MYSQL_TYPE_DATETIME:
case MYSQL_TYPE_TIMESTAMP:
return(DATA_INT);
default: /* Fall through */
DBUG_ASSERT((ulint)MYSQL_TYPE_DECIMAL < 256);
case MYSQL_TYPE_TIME2:
case MYSQL_TYPE_DATETIME2:
case MYSQL_TYPE_TIMESTAMP2:
return(DATA_FIXBINARY);
}
case MYSQL_TYPE_FLOAT:
return(DATA_FLOAT);
case MYSQL_TYPE_DOUBLE:
return(DATA_DOUBLE);
case MYSQL_TYPE_DECIMAL:
return(DATA_DECIMAL);
case MYSQL_TYPE_GEOMETRY:
case MYSQL_TYPE_TINY_BLOB:
case MYSQL_TYPE_MEDIUM_BLOB:
case MYSQL_TYPE_BLOB:
case MYSQL_TYPE_LONG_BLOB:
return(DATA_BLOB);
case MYSQL_TYPE_NULL:
/* MySQL currently accepts "NULL" datatype, but will
reject such datatype in the next release. We will cope
with it and not trigger assertion failure in 5.1 */
break;
default:
ut_error;
}
return(0);
}
/*******************************************************************//**
Writes an unsigned integer value < 64k to 2 bytes, in the little-endian
storage format. */
static inline
void
innobase_write_to_2_little_endian(
/*==============================*/
byte* buf, /*!< in: where to store */
ulint val) /*!< in: value to write, must be < 64k */
{
ut_a(val < 256 * 256);
buf[0] = (byte)(val & 0xFF);
buf[1] = (byte)(val / 256);
}
/*******************************************************************//**
Reads an unsigned integer value < 64k from 2 bytes, in the little-endian
storage format.
@return value */
static inline
uint
innobase_read_from_2_little_endian(
/*===============================*/
const uchar* buf) /*!< in: from where to read */
{
return((uint) ((ulint)(buf[0]) + 256 * ((ulint)(buf[1]))));
}
/*******************************************************************//**
Stores a key value for a row to a buffer.
@return key value length as stored in buff */
UNIV_INTERN
uint
ha_innobase::store_key_val_for_row(
/*===============================*/
uint keynr, /*!< in: key number */
char* buff, /*!< in/out: buffer for the key value (in MySQL
format) */
uint buff_len,/*!< in: buffer length */
const uchar* record)/*!< in: row in MySQL format */
{
KEY* key_info = table->key_info + keynr;
KEY_PART_INFO* key_part = key_info->key_part;
KEY_PART_INFO* end =
key_part + key_info->user_defined_key_parts;
char* buff_start = buff;
enum_field_types mysql_type;
Field* field;
ibool is_null;
DBUG_ENTER("store_key_val_for_row");
/* The format for storing a key field in MySQL is the following:
1. If the column can be NULL, then in the first byte we put 1 if the
field value is NULL, 0 otherwise.
2. If the column is of a BLOB type (it must be a column prefix field
in this case), then we put the length of the data in the field to the
next 2 bytes, in the little-endian format. If the field is SQL NULL,
then these 2 bytes are set to 0. Note that the length of data in the
field is <= column prefix length.
3. In a column prefix field, prefix_len next bytes are reserved for
data. In a normal field the max field length next bytes are reserved
for data. For a VARCHAR(n) the max field length is n. If the stored
value is the SQL NULL then these data bytes are set to 0.
4. We always use a 2 byte length for a true >= 5.0.3 VARCHAR. Note that
in the MySQL row format, the length is stored in 1 or 2 bytes,
depending on the maximum allowed length. But in the MySQL key value
format, the length always takes 2 bytes.
We have to zero-fill the buffer so that MySQL is able to use a
simple memcmp to compare two key values to determine if they are
equal. MySQL does this to compare contents of two 'ref' values. */
memset(buff, 0, buff_len);
for (; key_part != end; key_part++) {
is_null = FALSE;
if (key_part->null_bit) {
if (record[key_part->null_offset]
& key_part->null_bit) {
*buff = 1;
is_null = TRUE;
} else {
*buff = 0;
}
buff++;
}
field = key_part->field;
mysql_type = field->type();
if (mysql_type == MYSQL_TYPE_VARCHAR) {
/* >= 5.0.3 true VARCHAR */
ulint lenlen;
ulint len;
const byte* data;
ulint key_len;
ulint true_len;
const CHARSET_INFO* cs;
int error=0;
key_len = key_part->length;
if (is_null) {
buff += key_len + 2;
continue;
}
cs = field->charset();
lenlen = (ulint)
(((Field_varstring*) field)->length_bytes);
data = row_mysql_read_true_varchar(&len,
(byte*) (record
+ (ulint) get_field_offset(table, field)),
lenlen);
true_len = len;
/* For multi byte character sets we need to calculate
the true length of the key */
if (len > 0 && cs->mbmaxlen > 1) {
true_len = (ulint) cs->cset->well_formed_len(cs,
(const char*) data,
(const char*) data + len,
(uint) (key_len / cs->mbmaxlen),
&error);
}
/* In a column prefix index, we may need to truncate
the stored value: */
if (true_len > key_len) {
true_len = key_len;
}
/* The length in a key value is always stored in 2
bytes */
row_mysql_store_true_var_len((byte*) buff, true_len, 2);
buff += 2;
memcpy(buff, data, true_len);
/* Note that we always reserve the maximum possible
length of the true VARCHAR in the key value, though
only len first bytes after the 2 length bytes contain
actual data. The rest of the space was reset to zero
in the memset() call above. */
buff += key_len;
} else if (mysql_type == MYSQL_TYPE_TINY_BLOB
|| mysql_type == MYSQL_TYPE_MEDIUM_BLOB
|| mysql_type == MYSQL_TYPE_BLOB
|| mysql_type == MYSQL_TYPE_LONG_BLOB
/* MYSQL_TYPE_GEOMETRY data is treated
as BLOB data in innodb. */
|| mysql_type == MYSQL_TYPE_GEOMETRY) {
const CHARSET_INFO* cs;
ulint key_len;
ulint true_len;
int error=0;
ulint blob_len;
const byte* blob_data;
ut_a(key_part->key_part_flag & HA_PART_KEY_SEG);
key_len = key_part->length;
if (is_null) {
buff += key_len + 2;
continue;
}
cs = field->charset();
blob_data = row_mysql_read_blob_ref(&blob_len,
(byte*) (record
+ (ulint) get_field_offset(table, field)),
(ulint) field->pack_length());
true_len = blob_len;
ut_a(get_field_offset(table, field)
== key_part->offset);
/* For multi byte character sets we need to calculate
the true length of the key */
if (blob_len > 0 && cs->mbmaxlen > 1) {
true_len = (ulint) cs->cset->well_formed_len(cs,
(const char*) blob_data,
(const char*) blob_data
+ blob_len,
(uint) (key_len / cs->mbmaxlen),
&error);
}
/* All indexes on BLOB and TEXT are column prefix
indexes, and we may need to truncate the data to be
stored in the key value: */
if (true_len > key_len) {
true_len = key_len;
}
/* MySQL reserves 2 bytes for the length and the
storage of the number is little-endian */
innobase_write_to_2_little_endian(
(byte*) buff, true_len);
buff += 2;
memcpy(buff, blob_data, true_len);
/* Note that we always reserve the maximum possible
length of the BLOB prefix in the key value. */
buff += key_len;
} else {
/* Here we handle all other data types except the
true VARCHAR, BLOB and TEXT. Note that the column
value we store may be also in a column prefix
index. */
const CHARSET_INFO* cs = NULL;
ulint true_len;
ulint key_len;
const uchar* src_start;
int error=0;
enum_field_types real_type;
key_len = key_part->length;
if (is_null) {
buff += key_len;
continue;
}
src_start = record + key_part->offset;
real_type = field->real_type();
true_len = key_len;
/* Character set for the field is defined only
to fields whose type is string and real field
type is not enum or set. For these fields check
if character set is multi byte. */
if (real_type != MYSQL_TYPE_ENUM
&& real_type != MYSQL_TYPE_SET
&& ( mysql_type == MYSQL_TYPE_VAR_STRING
|| mysql_type == MYSQL_TYPE_STRING)) {
cs = field->charset();
/* For multi byte character sets we need to
calculate the true length of the key */
if (key_len > 0 && cs->mbmaxlen > 1) {
true_len = (ulint)
cs->cset->well_formed_len(cs,
(const char*) src_start,
(const char*) src_start
+ key_len,
(uint) (key_len
/ cs->mbmaxlen),
&error);
}
}
memcpy(buff, src_start, true_len);
buff += true_len;
/* Pad the unused space with spaces. */
if (true_len < key_len) {
ulint pad_len = key_len - true_len;
ut_a(cs != NULL);
ut_a(!(pad_len % cs->mbminlen));
cs->cset->fill(cs, buff, pad_len,
0x20 /* space */);
buff += pad_len;
}
}
}
ut_a(buff <= buff_start + buff_len);
DBUG_RETURN((uint)(buff - buff_start));
}
/**************************************************************//**
Determines if a field is needed in a prebuilt struct 'template'.
@return field to use, or NULL if the field is not needed */
static
const Field*
build_template_needs_field(
/*=======================*/
ibool index_contains, /*!< in:
dict_index_contains_col_or_prefix(
index, i) */
ibool read_just_key, /*!< in: TRUE when MySQL calls
ha_innobase::extra with the
argument HA_EXTRA_KEYREAD; it is enough
to read just columns defined in
the index (i.e., no read of the
clustered index record necessary) */
ibool fetch_all_in_key,
/*!< in: true=fetch all fields in
the index */
ibool fetch_primary_key_cols,
/*!< in: true=fetch the
primary key columns */
dict_index_t* index, /*!< in: InnoDB index to use */
const TABLE* table, /*!< in: MySQL table object */
ulint i) /*!< in: field index in InnoDB table */
{
const Field* field = table->field[i];
ut_ad(index_contains == dict_index_contains_col_or_prefix(index, i));
if (!index_contains) {
if (read_just_key) {
/* If this is a 'key read', we do not need
columns that are not in the key */
return(NULL);
}
} else if (fetch_all_in_key) {
/* This field is needed in the query */
return(field);
}
if (bitmap_is_set(table->read_set, static_cast<uint>(i))
|| bitmap_is_set(table->write_set, static_cast<uint>(i))) {
/* This field is needed in the query */
return(field);
}
if (fetch_primary_key_cols
&& dict_table_col_in_clustered_key(index->table, i)) {
/* This field is needed in the query */
return(field);
}
/* This field is not needed in the query, skip it */
return(NULL);
}
/**************************************************************//**
Determines if a field is needed in a prebuilt struct 'template'.
@return whether the field is needed for index condition pushdown */
inline
bool
build_template_needs_field_in_icp(
/*==============================*/
const dict_index_t* index, /*!< in: InnoDB index */
const row_prebuilt_t* prebuilt,/*!< in: row fetch template */
bool contains,/*!< in: whether the index contains
column i */
ulint i) /*!< in: column number */
{
ut_ad(contains == dict_index_contains_col_or_prefix(index, i));
return(index == prebuilt->index
? contains
: dict_index_contains_col_or_prefix(prebuilt->index, i));
}
/**************************************************************//**
Adds a field to a prebuilt struct 'template'.
@return the field template */
static
mysql_row_templ_t*
build_template_field(
/*=================*/
row_prebuilt_t* prebuilt, /*!< in/out: template */
dict_index_t* clust_index, /*!< in: InnoDB clustered index */
dict_index_t* index, /*!< in: InnoDB index to use */
TABLE* table, /*!< in: MySQL table object */
const Field* field, /*!< in: field in MySQL table */
ulint i) /*!< in: field index in InnoDB table */
{
mysql_row_templ_t* templ;
const dict_col_t* col;
ut_ad(field == table->field[i]);
ut_ad(clust_index->table == index->table);
col = dict_table_get_nth_col(index->table, i);
templ = prebuilt->mysql_template + prebuilt->n_template++;
UNIV_MEM_INVALID(templ, sizeof *templ);
templ->col_no = i;
templ->clust_rec_field_no = dict_col_get_clust_pos(col, clust_index);
ut_a(templ->clust_rec_field_no != ULINT_UNDEFINED);
if (dict_index_is_clust(index)) {
templ->rec_field_no = templ->clust_rec_field_no;
} else {
templ->rec_field_no = dict_index_get_nth_col_pos(index, i);
}
if (field->real_maybe_null()) {
templ->mysql_null_byte_offset =
field->null_offset();
templ->mysql_null_bit_mask = (ulint) field->null_bit;
} else {
templ->mysql_null_bit_mask = 0;
}
templ->mysql_col_offset = (ulint) get_field_offset(table, field);
templ->mysql_col_len = (ulint) field->pack_length();
templ->type = col->mtype;
templ->mysql_type = (ulint) field->type();
if (templ->mysql_type == DATA_MYSQL_TRUE_VARCHAR) {
templ->mysql_length_bytes = (ulint)
(((Field_varstring*) field)->length_bytes);
}
templ->charset = dtype_get_charset_coll(col->prtype);
templ->mbminlen = dict_col_get_mbminlen(col);
templ->mbmaxlen = dict_col_get_mbmaxlen(col);
templ->is_unsigned = col->prtype & DATA_UNSIGNED;
if (!dict_index_is_clust(index)
&& templ->rec_field_no == ULINT_UNDEFINED) {
prebuilt->need_to_access_clustered = TRUE;
}
if (prebuilt->mysql_prefix_len < templ->mysql_col_offset
+ templ->mysql_col_len) {
prebuilt->mysql_prefix_len = templ->mysql_col_offset
+ templ->mysql_col_len;
}
if (templ->type == DATA_BLOB) {
prebuilt->templ_contains_blob = TRUE;
}
return(templ);
}
/**************************************************************//**
Builds a 'template' to the prebuilt struct. The template is used in fast
retrieval of just those column values MySQL needs in its processing. */
UNIV_INTERN
void
ha_innobase::build_template(
/*========================*/
bool whole_row) /*!< in: true=ROW_MYSQL_WHOLE_ROW,
false=ROW_MYSQL_REC_FIELDS */
{
dict_index_t* index;
dict_index_t* clust_index;
ulint n_fields;
ibool fetch_all_in_key = FALSE;
ibool fetch_primary_key_cols = FALSE;
ulint i;
if (prebuilt->select_lock_type == LOCK_X) {
/* We always retrieve the whole clustered index record if we
use exclusive row level locks, for example, if the read is
done in an UPDATE statement. */
whole_row = true;
} else if (!whole_row) {
if (prebuilt->hint_need_to_fetch_extra_cols
== ROW_RETRIEVE_ALL_COLS) {
/* We know we must at least fetch all columns in the
key, or all columns in the table */
if (prebuilt->read_just_key) {
/* MySQL has instructed us that it is enough
to fetch the columns in the key; looks like
MySQL can set this flag also when there is
only a prefix of the column in the key: in
that case we retrieve the whole column from
the clustered index */
fetch_all_in_key = TRUE;
} else {
whole_row = true;
}
} else if (prebuilt->hint_need_to_fetch_extra_cols
== ROW_RETRIEVE_PRIMARY_KEY) {
/* We must at least fetch all primary key cols. Note
that if the clustered index was internally generated
by InnoDB on the row id (no primary key was
defined), then row_search_for_mysql() will always
retrieve the row id to a special buffer in the
prebuilt struct. */
fetch_primary_key_cols = TRUE;
}
}
clust_index = dict_table_get_first_index(prebuilt->table);
index = whole_row ? clust_index : prebuilt->index;
prebuilt->need_to_access_clustered = (index == clust_index);
/* Either prebuilt->index should be a secondary index, or it
should be the clustered index. */
ut_ad(dict_index_is_clust(index) == (index == clust_index));
/* Below we check column by column if we need to access
the clustered index. */
n_fields = (ulint) table->s->fields; /* number of columns */
if (!prebuilt->mysql_template) {
prebuilt->mysql_template = (mysql_row_templ_t*)
mem_alloc(n_fields * sizeof(mysql_row_templ_t));
}
prebuilt->template_type = whole_row
? ROW_MYSQL_WHOLE_ROW : ROW_MYSQL_REC_FIELDS;
prebuilt->null_bitmap_len = table->s->null_bytes;
/* Prepare to build prebuilt->mysql_template[]. */
prebuilt->templ_contains_blob = FALSE;
prebuilt->mysql_prefix_len = 0;
prebuilt->n_template = 0;
prebuilt->idx_cond_n_cols = 0;
/* Note that in InnoDB, i is the column number in the table.
MySQL calls columns 'fields'. */
if (active_index != MAX_KEY && active_index == pushed_idx_cond_keyno) {
/* Push down an index condition or an end_range check. */
for (i = 0; i < n_fields; i++) {
const ibool index_contains
= dict_index_contains_col_or_prefix(index, i);
/* Test if an end_range or an index condition
refers to the field. Note that "index" and
"index_contains" may refer to the clustered index.
Index condition pushdown is relative to prebuilt->index
(the index that is being looked up first). */
/* When join_read_always_key() invokes this
code via handler::ha_index_init() and
ha_innobase::index_init(), end_range is not
yet initialized. Because of that, we must
always check for index_contains, instead of
the subset
field->part_of_key.is_set(active_index)
which would be acceptable if end_range==NULL. */
if (build_template_needs_field_in_icp(
index, prebuilt, index_contains, i)) {
/* Needed in ICP */
const Field* field;
mysql_row_templ_t* templ;
if (whole_row) {
field = table->field[i];
} else {
field = build_template_needs_field(
index_contains,
prebuilt->read_just_key,
fetch_all_in_key,
fetch_primary_key_cols,
index, table, i);
if (!field) {
continue;
}
}
templ = build_template_field(
prebuilt, clust_index, index,
table, field, i);
prebuilt->idx_cond_n_cols++;
ut_ad(prebuilt->idx_cond_n_cols
== prebuilt->n_template);
if (index == prebuilt->index) {
templ->icp_rec_field_no
= templ->rec_field_no;
} else {
templ->icp_rec_field_no
= dict_index_get_nth_col_pos(
prebuilt->index, i);
}
if (dict_index_is_clust(prebuilt->index)) {
ut_ad(templ->icp_rec_field_no
!= ULINT_UNDEFINED);
/* If the primary key includes
a column prefix, use it in
index condition pushdown,
because the condition is
evaluated before fetching any
off-page (externally stored)
columns. */
if (templ->icp_rec_field_no
< prebuilt->index->n_uniq) {
/* This is a key column;
all set. */
continue;
}
} else if (templ->icp_rec_field_no
!= ULINT_UNDEFINED) {
continue;
}
/* This is a column prefix index.
The column prefix can be used in
an end_range comparison. */
templ->icp_rec_field_no
= dict_index_get_nth_col_or_prefix_pos(
prebuilt->index, i, TRUE);
ut_ad(templ->icp_rec_field_no
!= ULINT_UNDEFINED);
/* Index condition pushdown can be used on
all columns of a secondary index, and on
the PRIMARY KEY columns. On the clustered
index, it must never be used on other than
PRIMARY KEY columns, because those columns
may be stored off-page, and we will not
fetch externally stored columns before
checking the index condition. */
/* TODO: test the above with an assertion
like this. Note that index conditions are
currently pushed down as part of the
"optimizer phase" while end_range is done
as part of the execution phase. Therefore,
we were unable to use an accurate condition
for end_range in the "if" condition above,
and the following assertion would fail.
ut_ad(!dict_index_is_clust(prebuilt->index)
|| templ->rec_field_no
< prebuilt->index->n_uniq);
*/
}
}
ut_ad(prebuilt->idx_cond_n_cols > 0);
ut_ad(prebuilt->idx_cond_n_cols == prebuilt->n_template);
/* Include the fields that are not needed in index condition
pushdown. */
for (i = 0; i < n_fields; i++) {
const ibool index_contains
= dict_index_contains_col_or_prefix(index, i);
if (!build_template_needs_field_in_icp(
index, prebuilt, index_contains, i)) {
/* Not needed in ICP */
const Field* field;
if (whole_row) {
field = table->field[i];
} else {
field = build_template_needs_field(
index_contains,
prebuilt->read_just_key,
fetch_all_in_key,
fetch_primary_key_cols,
index, table, i);
if (!field) {
continue;
}
}
build_template_field(prebuilt,
clust_index, index,
table, field, i);
}
}
prebuilt->idx_cond = this;
} else {
/* No index condition pushdown */
prebuilt->idx_cond = NULL;
for (i = 0; i < n_fields; i++) {
const Field* field;
if (whole_row) {
field = table->field[i];
} else {
field = build_template_needs_field(
dict_index_contains_col_or_prefix(
index, i),
prebuilt->read_just_key,
fetch_all_in_key,
fetch_primary_key_cols,
index, table, i);
if (!field) {
continue;
}
}
build_template_field(prebuilt, clust_index, index,
table, field, i);
}
}
if (index != clust_index && prebuilt->need_to_access_clustered) {
/* Change rec_field_no's to correspond to the clustered index
record */
for (i = 0; i < prebuilt->n_template; i++) {
mysql_row_templ_t* templ
= &prebuilt->mysql_template[i];
templ->rec_field_no = templ->clust_rec_field_no;
}
}
}
/********************************************************************//**
This special handling is really to overcome the limitations of MySQL's
binlogging. We need to eliminate the non-determinism that will arise in
INSERT ... SELECT type of statements, since MySQL binlog only stores the
min value of the autoinc interval. Once that is fixed we can get rid of
the special lock handling.
@return DB_SUCCESS if all OK else error code */
UNIV_INTERN
dberr_t
ha_innobase::innobase_lock_autoinc(void)
/*====================================*/
{
dberr_t error = DB_SUCCESS;
ut_ad(!srv_read_only_mode);
switch (innobase_autoinc_lock_mode) {
case AUTOINC_NO_LOCKING:
/* Acquire only the AUTOINC mutex. */
dict_table_autoinc_lock(prebuilt->table);
break;
case AUTOINC_NEW_STYLE_LOCKING:
/* For simple (single/multi) row INSERTs, we fallback to the
old style only if another transaction has already acquired
the AUTOINC lock on behalf of a LOAD FILE or INSERT ... SELECT
etc. type of statement. */
if (thd_sql_command(user_thd) == SQLCOM_INSERT
|| thd_sql_command(user_thd) == SQLCOM_REPLACE) {
dict_table_t* ib_table = prebuilt->table;
/* Acquire the AUTOINC mutex. */
dict_table_autoinc_lock(ib_table);
/* We need to check that another transaction isn't
already holding the AUTOINC lock on the table. */
if (ib_table->n_waiting_or_granted_auto_inc_locks) {
/* Release the mutex to avoid deadlocks. */
dict_table_autoinc_unlock(ib_table);
} else {
break;
}
}
/* Fall through to old style locking. */
case AUTOINC_OLD_STYLE_LOCKING:
error = row_lock_table_autoinc_for_mysql(prebuilt);
if (error == DB_SUCCESS) {
/* Acquire the AUTOINC mutex. */
dict_table_autoinc_lock(prebuilt->table);
}
break;
default:
ut_error;
}
return(error);
}
/********************************************************************//**
Reset the autoinc value in the table.
@return DB_SUCCESS if all went well else error code */
UNIV_INTERN
dberr_t
ha_innobase::innobase_reset_autoinc(
/*================================*/
ulonglong autoinc) /*!< in: value to store */
{
dberr_t error;
error = innobase_lock_autoinc();
if (error == DB_SUCCESS) {
dict_table_autoinc_initialize(prebuilt->table, autoinc);
dict_table_autoinc_unlock(prebuilt->table);
}
return(error);
}
/********************************************************************//**
Store the autoinc value in the table. The autoinc value is only set if
it's greater than the existing autoinc value in the table.
@return DB_SUCCESS if all went well else error code */
UNIV_INTERN
dberr_t
ha_innobase::innobase_set_max_autoinc(
/*==================================*/
ulonglong auto_inc) /*!< in: value to store */
{
dberr_t error;
error = innobase_lock_autoinc();
if (error == DB_SUCCESS) {
dict_table_autoinc_update_if_greater(prebuilt->table, auto_inc);
dict_table_autoinc_unlock(prebuilt->table);
}
return(error);
}
/********************************************************************//**
Stores a row in an InnoDB database, to the table specified in this
handle.
@return error code */
UNIV_INTERN
int
ha_innobase::write_row(
/*===================*/
uchar* record) /*!< in: a row in MySQL format */
{
dberr_t error;
int error_result= 0;
ibool auto_inc_used= FALSE;
ulint sql_command;
trx_t* trx = thd_to_trx(user_thd);
DBUG_ENTER("ha_innobase::write_row");
if (high_level_read_only) {
ib_senderrf(ha_thd(), IB_LOG_LEVEL_WARN, ER_READ_ONLY_MODE);
DBUG_RETURN(HA_ERR_TABLE_READONLY);
} else if (prebuilt->trx != trx) {
sql_print_error("The transaction object for the table handle "
"is at %p, but for the current thread it is at "
"%p",
(const void*) prebuilt->trx, (const void*) trx);
fputs("InnoDB: Dump of 200 bytes around prebuilt: ", stderr);
ut_print_buf(stderr, ((const byte*) prebuilt) - 100, 200);
fputs("\n"
"InnoDB: Dump of 200 bytes around ha_data: ",
stderr);
ut_print_buf(stderr, ((const byte*) trx) - 100, 200);
putc('\n', stderr);
ut_error;
} else if (!trx_is_started(trx)) {
++trx->will_lock;
}
ha_statistic_increment(&SSV::ha_write_count);
sql_command = thd_sql_command(user_thd);
if ((sql_command == SQLCOM_ALTER_TABLE
|| sql_command == SQLCOM_OPTIMIZE
|| sql_command == SQLCOM_CREATE_INDEX
|| sql_command == SQLCOM_DROP_INDEX)
&& num_write_row >= 10000) {
/* ALTER TABLE is COMMITted at every 10000 copied rows.
The IX table lock for the original table has to be re-issued.
As this method will be called on a temporary table where the
contents of the original table is being copied to, it is
a bit tricky to determine the source table. The cursor
position in the source table need not be adjusted after the
intermediate COMMIT, since writes by other transactions are
being blocked by a MySQL table lock TL_WRITE_ALLOW_READ. */
dict_table_t* src_table;
enum lock_mode mode;
num_write_row = 0;
/* Commit the transaction. This will release the table
locks, so they have to be acquired again. */
/* Altering an InnoDB table */
/* Get the source table. */
src_table = lock_get_src_table(
prebuilt->trx, prebuilt->table, &mode);
if (!src_table) {
no_commit:
/* Unknown situation: do not commit */
/*
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: ALTER TABLE is holding lock"
" on %lu tables!\n",
prebuilt->trx->mysql_n_tables_locked);
*/
;
} else if (src_table == prebuilt->table) {
/* Source table is not in InnoDB format:
no need to re-acquire locks on it. */
/* Altering to InnoDB format */
innobase_commit(ht, user_thd, 1);
/* Note that this transaction is still active. */
trx_register_for_2pc(prebuilt->trx);
/* We will need an IX lock on the destination table. */
prebuilt->sql_stat_start = TRUE;
} else {
/* Ensure that there are no other table locks than
LOCK_IX and LOCK_AUTO_INC on the destination table. */
if (!lock_is_table_exclusive(prebuilt->table,
prebuilt->trx)) {
goto no_commit;
}
/* Commit the transaction. This will release the table
locks, so they have to be acquired again. */
innobase_commit(ht, user_thd, 1);
/* Note that this transaction is still active. */
trx_register_for_2pc(prebuilt->trx);
/* Re-acquire the table lock on the source table. */
row_lock_table_for_mysql(prebuilt, src_table, mode);
/* We will need an IX lock on the destination table. */
prebuilt->sql_stat_start = TRUE;
}
}
num_write_row++;
/* This is the case where the table has an auto-increment column */
if (table->next_number_field && record == table->record[0]) {
/* Reset the error code before calling
innobase_get_auto_increment(). */
prebuilt->autoinc_error = DB_SUCCESS;
if ((error_result = update_auto_increment())) {
/* We don't want to mask autoinc overflow errors. */
/* Handle the case where the AUTOINC sub-system
failed during initialization. */
if (prebuilt->autoinc_error == DB_UNSUPPORTED) {
error_result = ER_AUTOINC_READ_FAILED;
/* Set the error message to report too. */
my_error(ER_AUTOINC_READ_FAILED, MYF(0));
goto func_exit;
} else if (prebuilt->autoinc_error != DB_SUCCESS) {
error = prebuilt->autoinc_error;
goto report_error;
}
/* MySQL errors are passed straight back. */
goto func_exit;
}
auto_inc_used = TRUE;
}
if (prebuilt->mysql_template == NULL
|| prebuilt->template_type != ROW_MYSQL_WHOLE_ROW) {
/* Build the template used in converting quickly between
the two database formats */
build_template(true);
}
innobase_srv_conc_enter_innodb(prebuilt->trx);
error = row_insert_for_mysql((byte*) record, prebuilt);
DEBUG_SYNC(user_thd, "ib_after_row_insert");
/* Handle duplicate key errors */
if (auto_inc_used) {
ulonglong auto_inc;
ulonglong col_max_value;
/* Note the number of rows processed for this statement, used
by get_auto_increment() to determine the number of AUTO-INC
values to reserve. This is only useful for a mult-value INSERT
and is a statement level counter.*/
if (trx->n_autoinc_rows > 0) {
--trx->n_autoinc_rows;
}
/* We need the upper limit of the col type to check for
whether we update the table autoinc counter or not. */
col_max_value = innobase_get_int_col_max_value(
table->next_number_field);
/* Get the value that MySQL attempted to store in the table.*/
auto_inc = table->next_number_field->val_int();
switch (error) {
case DB_DUPLICATE_KEY:
/* A REPLACE command and LOAD DATA INFILE REPLACE
handle a duplicate key error themselves, but we
must update the autoinc counter if we are performing
those statements. */
switch (sql_command) {
case SQLCOM_LOAD:
if (trx->duplicates) {
goto set_max_autoinc;
}
break;
case SQLCOM_REPLACE:
case SQLCOM_INSERT_SELECT:
case SQLCOM_REPLACE_SELECT:
goto set_max_autoinc;
default:
break;
}
break;
case DB_SUCCESS:
/* If the actual value inserted is greater than
the upper limit of the interval, then we try and
update the table upper limit. Note: last_value
will be 0 if get_auto_increment() was not called.*/
if (auto_inc >= prebuilt->autoinc_last_value) {
set_max_autoinc:
/* This should filter out the negative
values set explicitly by the user. */
if (auto_inc <= col_max_value) {
ut_a(prebuilt->autoinc_increment > 0);
ulonglong offset;
ulonglong increment;
dberr_t err;
offset = prebuilt->autoinc_offset;
increment = prebuilt->autoinc_increment;
auto_inc = innobase_next_autoinc(
auto_inc,
1, increment, offset,
col_max_value);
err = innobase_set_max_autoinc(
auto_inc);
if (err != DB_SUCCESS) {
error = err;
}
}
}
break;
default:
break;
}
}
innobase_srv_conc_exit_innodb(prebuilt->trx);
report_error:
if (error == DB_TABLESPACE_DELETED) {
ib_senderrf(
trx->mysql_thd, IB_LOG_LEVEL_ERROR,
ER_TABLESPACE_DISCARDED,
table->s->table_name.str);
}
error_result = convert_error_code_to_mysql(error,
prebuilt->table->flags,
user_thd);
if (error_result == HA_FTS_INVALID_DOCID) {
my_error(HA_FTS_INVALID_DOCID, MYF(0));
}
func_exit:
innobase_active_small();
DBUG_RETURN(error_result);
}
/**********************************************************************//**
Checks which fields have changed in a row and stores information
of them to an update vector.
@return DB_SUCCESS or error code */
static
dberr_t
calc_row_difference(
/*================*/
upd_t* uvect, /*!< in/out: update vector */
uchar* old_row, /*!< in: old row in MySQL format */
uchar* new_row, /*!< in: new row in MySQL format */
TABLE* table, /*!< in: table in MySQL data
dictionary */
uchar* upd_buff, /*!< in: buffer to use */
ulint buff_len, /*!< in: buffer length */
row_prebuilt_t* prebuilt, /*!< in: InnoDB prebuilt struct */
THD* thd) /*!< in: user thread */
{
uchar* original_upd_buff = upd_buff;
Field* field;
enum_field_types field_mysql_type;
uint n_fields;
ulint o_len;
ulint n_len;
ulint col_pack_len;
const byte* new_mysql_row_col;
const byte* o_ptr;
const byte* n_ptr;
byte* buf;
upd_field_t* ufield;
ulint col_type;
ulint n_changed = 0;
dfield_t dfield;
dict_index_t* clust_index;
uint i;
ibool changes_fts_column = FALSE;
ibool changes_fts_doc_col = FALSE;
trx_t* trx = thd_to_trx(thd);
doc_id_t doc_id = FTS_NULL_DOC_ID;
ut_ad(!srv_read_only_mode);
n_fields = table->s->fields;
clust_index = dict_table_get_first_index(prebuilt->table);
/* We use upd_buff to convert changed fields */
buf = (byte*) upd_buff;
for (i = 0; i < n_fields; i++) {
field = table->field[i];
o_ptr = (const byte*) old_row + get_field_offset(table, field);
n_ptr = (const byte*) new_row + get_field_offset(table, field);
/* Use new_mysql_row_col and col_pack_len save the values */
new_mysql_row_col = n_ptr;
col_pack_len = field->pack_length();
o_len = col_pack_len;
n_len = col_pack_len;
/* We use o_ptr and n_ptr to dig up the actual data for
comparison. */
field_mysql_type = field->type();
col_type = prebuilt->table->cols[i].mtype;
switch (col_type) {
case DATA_BLOB:
o_ptr = row_mysql_read_blob_ref(&o_len, o_ptr, o_len);
n_ptr = row_mysql_read_blob_ref(&n_len, n_ptr, n_len);
break;
case DATA_VARCHAR:
case DATA_BINARY:
case DATA_VARMYSQL:
if (field_mysql_type == MYSQL_TYPE_VARCHAR) {
/* This is a >= 5.0.3 type true VARCHAR where
the real payload data length is stored in
1 or 2 bytes */
o_ptr = row_mysql_read_true_varchar(
&o_len, o_ptr,
(ulint)
(((Field_varstring*) field)->length_bytes));
n_ptr = row_mysql_read_true_varchar(
&n_len, n_ptr,
(ulint)
(((Field_varstring*) field)->length_bytes));
}
break;
default:
;
}
if (field_mysql_type == MYSQL_TYPE_LONGLONG
&& prebuilt->table->fts
&& innobase_strcasecmp(
field->field_name, FTS_DOC_ID_COL_NAME) == 0) {
doc_id = (doc_id_t) mach_read_from_n_little_endian(
n_ptr, 8);
if (doc_id == 0) {
return(DB_FTS_INVALID_DOCID);
}
}
if (field->real_maybe_null()) {
if (field->is_null_in_record(old_row)) {
o_len = UNIV_SQL_NULL;
}
if (field->is_null_in_record(new_row)) {
n_len = UNIV_SQL_NULL;
}
}
if (o_len != n_len || (o_len != UNIV_SQL_NULL &&
0 != memcmp(o_ptr, n_ptr, o_len))) {
/* The field has changed */
ufield = uvect->fields + n_changed;
UNIV_MEM_INVALID(ufield, sizeof *ufield);
/* Let us use a dummy dfield to make the conversion
from the MySQL column format to the InnoDB format */
if (n_len != UNIV_SQL_NULL) {
dict_col_copy_type(prebuilt->table->cols + i,
dfield_get_type(&dfield));
buf = row_mysql_store_col_in_innobase_format(
&dfield,
(byte*) buf,
TRUE,
new_mysql_row_col,
col_pack_len,
dict_table_is_comp(prebuilt->table));
dfield_copy(&ufield->new_val, &dfield);
} else {
dfield_set_null(&ufield->new_val);
}
ufield->exp = NULL;
ufield->orig_len = 0;
ufield->field_no = dict_col_get_clust_pos(
&prebuilt->table->cols[i], clust_index);
n_changed++;
/* If an FTS indexed column was changed by this
UPDATE then we need to inform the FTS sub-system.
NOTE: Currently we re-index all FTS indexed columns
even if only a subset of the FTS indexed columns
have been updated. That is the reason we are
checking only once here. Later we will need to
note which columns have been updated and do
selective processing. */
if (prebuilt->table->fts != NULL) {
ulint offset;
dict_table_t* innodb_table;
innodb_table = prebuilt->table;
if (!changes_fts_column) {
offset = row_upd_changes_fts_column(
innodb_table, ufield);
if (offset != ULINT_UNDEFINED) {
changes_fts_column = TRUE;
}
}
if (!changes_fts_doc_col) {
changes_fts_doc_col =
row_upd_changes_doc_id(
innodb_table, ufield);
}
}
}
}
/* If the update changes a column with an FTS index on it, we
then add an update column node with a new document id to the
other changes. We piggy back our changes on the normal UPDATE
to reduce processing and IO overhead. */
if (!prebuilt->table->fts) {
trx->fts_next_doc_id = 0;
} else if (changes_fts_column || changes_fts_doc_col) {
dict_table_t* innodb_table = prebuilt->table;
ufield = uvect->fields + n_changed;
if (!DICT_TF2_FLAG_IS_SET(
innodb_table, DICT_TF2_FTS_HAS_DOC_ID)) {
/* If Doc ID is managed by user, and if any
FTS indexed column has been updated, its corresponding
Doc ID must also be updated. Otherwise, return
error */
if (changes_fts_column && !changes_fts_doc_col) {
ut_print_timestamp(stderr);
fprintf(stderr, " InnoDB: A new Doc ID"
" must be supplied while updating"
" FTS indexed columns.\n");
return(DB_FTS_INVALID_DOCID);
}
/* Doc ID must monotonically increase */
ut_ad(innodb_table->fts->cache);
if (doc_id < prebuilt->table->fts->cache->next_doc_id) {
fprintf(stderr,
"InnoDB: FTS Doc ID must be larger than"
" " IB_ID_FMT " for table",
innodb_table->fts->cache->next_doc_id
- 1);
ut_print_name(stderr, trx,
TRUE, innodb_table->name);
putc('\n', stderr);
return(DB_FTS_INVALID_DOCID);
} else if ((doc_id
- prebuilt->table->fts->cache->next_doc_id)
>= FTS_DOC_ID_MAX_STEP) {
fprintf(stderr,
"InnoDB: Doc ID " UINT64PF " is too"
" big. Its difference with largest"
" Doc ID used " UINT64PF " cannot"
" exceed or equal to %d\n",
doc_id,
prebuilt->table->fts->cache->next_doc_id - 1,
FTS_DOC_ID_MAX_STEP);
}
trx->fts_next_doc_id = doc_id;
} else {
/* If the Doc ID is a hidden column, it can't be
changed by user */
ut_ad(!changes_fts_doc_col);
/* Doc ID column is hidden, a new Doc ID will be
generated by following fts_update_doc_id() call */
trx->fts_next_doc_id = 0;
}
fts_update_doc_id(
innodb_table, ufield, &trx->fts_next_doc_id);
++n_changed;
} else {
/* We have a Doc ID column, but none of FTS indexed
columns are touched, nor the Doc ID column, so set
fts_next_doc_id to UINT64_UNDEFINED, which means do not
update the Doc ID column */
trx->fts_next_doc_id = UINT64_UNDEFINED;
}
uvect->n_fields = n_changed;
uvect->info_bits = 0;
ut_a(buf <= (byte*) original_upd_buff + buff_len);
return(DB_SUCCESS);
}
/**********************************************************************//**
Updates a row given as a parameter to a new value. Note that we are given
whole rows, not just the fields which are updated: this incurs some
overhead for CPU when we check which fields are actually updated.
TODO: currently InnoDB does not prevent the 'Halloween problem':
in a searched update a single row can get updated several times
if its index columns are updated!
@return error number or 0 */
UNIV_INTERN
int
ha_innobase::update_row(
/*====================*/
const uchar* old_row, /*!< in: old row in MySQL format */
uchar* new_row) /*!< in: new row in MySQL format */
{
upd_t* uvect;
dberr_t error;
trx_t* trx = thd_to_trx(user_thd);
DBUG_ENTER("ha_innobase::update_row");
ut_a(prebuilt->trx == trx);
if (high_level_read_only) {
ib_senderrf(ha_thd(), IB_LOG_LEVEL_WARN, ER_READ_ONLY_MODE);
DBUG_RETURN(HA_ERR_TABLE_READONLY);
} else if (!trx_is_started(trx)) {
++trx->will_lock;
}
if (upd_buf == NULL) {
ut_ad(upd_buf_size == 0);
/* Create a buffer for packing the fields of a record. Why
table->reclength did not work here? Obviously, because char
fields when packed actually became 1 byte longer, when we also
stored the string length as the first byte. */
upd_buf_size = table->s->reclength + table->s->max_key_length
+ MAX_REF_PARTS * 3;
upd_buf = (uchar*) my_malloc(upd_buf_size, MYF(MY_WME));
if (upd_buf == NULL) {
upd_buf_size = 0;
DBUG_RETURN(HA_ERR_OUT_OF_MEM);
}
}
ha_statistic_increment(&SSV::ha_update_count);
if (prebuilt->upd_node) {
uvect = prebuilt->upd_node->update;
} else {
uvect = row_get_prebuilt_update_vector(prebuilt);
}
/* Build an update vector from the modified fields in the rows
(uses upd_buf of the handle) */
error = calc_row_difference(uvect, (uchar*) old_row, new_row, table,
upd_buf, upd_buf_size, prebuilt, user_thd);
if (error != DB_SUCCESS) {
goto func_exit;
}
/* This is not a delete */
prebuilt->upd_node->is_delete = FALSE;
ut_a(prebuilt->template_type == ROW_MYSQL_WHOLE_ROW);
innobase_srv_conc_enter_innodb(trx);
error = row_update_for_mysql((byte*) old_row, prebuilt);
/* We need to do some special AUTOINC handling for the following case:
INSERT INTO t (c1,c2) VALUES(x,y) ON DUPLICATE KEY UPDATE ...
We need to use the AUTOINC counter that was actually used by
MySQL in the UPDATE statement, which can be different from the
value used in the INSERT statement.*/
if (error == DB_SUCCESS
&& table->next_number_field
&& new_row == table->record[0]
&& thd_sql_command(user_thd) == SQLCOM_INSERT
&& trx->duplicates) {
ulonglong auto_inc;
ulonglong col_max_value;
auto_inc = table->next_number_field->val_int();
/* We need the upper limit of the col type to check for
whether we update the table autoinc counter or not. */
col_max_value = innobase_get_int_col_max_value(
table->next_number_field);
if (auto_inc <= col_max_value && auto_inc != 0) {
ulonglong offset;
ulonglong increment;
offset = prebuilt->autoinc_offset;
increment = prebuilt->autoinc_increment;
auto_inc = innobase_next_autoinc(
auto_inc, 1, increment, offset, col_max_value);
error = innobase_set_max_autoinc(auto_inc);
}
}
innobase_srv_conc_exit_innodb(trx);
func_exit:
int err = convert_error_code_to_mysql(error,
prebuilt->table->flags, user_thd);
/* If success and no columns were updated. */
if (err == 0 && uvect->n_fields == 0) {
/* This is the same as success, but instructs
MySQL that the row is not really updated and it
should not increase the count of updated rows.
This is fix for http://bugs.mysql.com/29157 */
err = HA_ERR_RECORD_IS_THE_SAME;
} else if (err == HA_FTS_INVALID_DOCID) {
my_error(HA_FTS_INVALID_DOCID, MYF(0));
}
/* Tell InnoDB server that there might be work for
utility threads: */
innobase_active_small();
DBUG_RETURN(err);
}
/**********************************************************************//**
Deletes a row given as the parameter.
@return error number or 0 */
UNIV_INTERN
int
ha_innobase::delete_row(
/*====================*/
const uchar* record) /*!< in: a row in MySQL format */
{
dberr_t error;
trx_t* trx = thd_to_trx(user_thd);
DBUG_ENTER("ha_innobase::delete_row");
ut_a(prebuilt->trx == trx);
if (high_level_read_only) {
ib_senderrf(ha_thd(), IB_LOG_LEVEL_WARN, ER_READ_ONLY_MODE);
DBUG_RETURN(HA_ERR_TABLE_READONLY);
} else if (!trx_is_started(trx)) {
++trx->will_lock;
}
ha_statistic_increment(&SSV::ha_delete_count);
if (!prebuilt->upd_node) {
row_get_prebuilt_update_vector(prebuilt);
}
/* This is a delete */
prebuilt->upd_node->is_delete = TRUE;
innobase_srv_conc_enter_innodb(trx);
error = row_update_for_mysql((byte*) record, prebuilt);
innobase_srv_conc_exit_innodb(trx);
/* Tell the InnoDB server that there might be work for
utility threads: */
innobase_active_small();
DBUG_RETURN(convert_error_code_to_mysql(
error, prebuilt->table->flags, user_thd));
}
/**********************************************************************//**
Removes a new lock set on a row, if it was not read optimistically. This can
be called after a row has been read in the processing of an UPDATE or a DELETE
query, if the option innodb_locks_unsafe_for_binlog is set. */
UNIV_INTERN
void
ha_innobase::unlock_row(void)
/*=========================*/
{
DBUG_ENTER("ha_innobase::unlock_row");
/* Consistent read does not take any locks, thus there is
nothing to unlock. */
if (prebuilt->select_lock_type == LOCK_NONE) {
DBUG_VOID_RETURN;
}
/* Ideally, this assert must be in the beginning of the function.
But there are some calls to this function from the SQL layer when the
transaction is in state TRX_STATE_NOT_STARTED. The check on
prebuilt->select_lock_type above gets around this issue. */
ut_ad(trx_state_eq(prebuilt->trx, TRX_STATE_ACTIVE));
switch (prebuilt->row_read_type) {
case ROW_READ_WITH_LOCKS:
if (!srv_locks_unsafe_for_binlog
&& prebuilt->trx->isolation_level
> TRX_ISO_READ_COMMITTED) {
break;
}
/* fall through */
case ROW_READ_TRY_SEMI_CONSISTENT:
row_unlock_for_mysql(prebuilt, FALSE);
break;
case ROW_READ_DID_SEMI_CONSISTENT:
prebuilt->row_read_type = ROW_READ_TRY_SEMI_CONSISTENT;
break;
}
DBUG_VOID_RETURN;
}
/* See handler.h and row0mysql.h for docs on this function. */
UNIV_INTERN
bool
ha_innobase::was_semi_consistent_read(void)
/*=======================================*/
{
return(prebuilt->row_read_type == ROW_READ_DID_SEMI_CONSISTENT);
}
/* See handler.h and row0mysql.h for docs on this function. */
UNIV_INTERN
void
ha_innobase::try_semi_consistent_read(bool yes)
/*===========================================*/
{
ut_a(prebuilt->trx == thd_to_trx(ha_thd()));
/* Row read type is set to semi consistent read if this was
requested by the MySQL and either innodb_locks_unsafe_for_binlog
option is used or this session is using READ COMMITTED isolation
level. */
if (yes
&& (srv_locks_unsafe_for_binlog
|| prebuilt->trx->isolation_level <= TRX_ISO_READ_COMMITTED)) {
prebuilt->row_read_type = ROW_READ_TRY_SEMI_CONSISTENT;
} else {
prebuilt->row_read_type = ROW_READ_WITH_LOCKS;
}
}
/******************************************************************//**
Initializes a handle to use an index.
@return 0 or error number */
UNIV_INTERN
int
ha_innobase::index_init(
/*====================*/
uint keynr, /*!< in: key (index) number */
bool sorted) /*!< in: 1 if result MUST be sorted according to index */
{
DBUG_ENTER("index_init");
DBUG_RETURN(change_active_index(keynr));
}
/******************************************************************//**
Currently does nothing.
@return 0 */
UNIV_INTERN
int
ha_innobase::index_end(void)
/*========================*/
{
int error = 0;
DBUG_ENTER("index_end");
active_index = MAX_KEY;
in_range_check_pushed_down = FALSE;
ds_mrr.dsmrr_close();
DBUG_RETURN(error);
}
/*********************************************************************//**
Converts a search mode flag understood by MySQL to a flag understood
by InnoDB. */
static inline
ulint
convert_search_mode_to_innobase(
/*============================*/
enum ha_rkey_function find_flag)
{
switch (find_flag) {
case HA_READ_KEY_EXACT:
/* this does not require the index to be UNIQUE */
return(PAGE_CUR_GE);
case HA_READ_KEY_OR_NEXT:
return(PAGE_CUR_GE);
case HA_READ_KEY_OR_PREV:
return(PAGE_CUR_LE);
case HA_READ_AFTER_KEY:
return(PAGE_CUR_G);
case HA_READ_BEFORE_KEY:
return(PAGE_CUR_L);
case HA_READ_PREFIX:
return(PAGE_CUR_GE);
case HA_READ_PREFIX_LAST:
return(PAGE_CUR_LE);
case HA_READ_PREFIX_LAST_OR_PREV:
return(PAGE_CUR_LE);
/* In MySQL-4.0 HA_READ_PREFIX and HA_READ_PREFIX_LAST always
pass a complete-field prefix of a key value as the search
tuple. I.e., it is not allowed that the last field would
just contain n first bytes of the full field value.
MySQL uses a 'padding' trick to convert LIKE 'abc%'
type queries so that it can use as a search tuple
a complete-field-prefix of a key value. Thus, the InnoDB
search mode PAGE_CUR_LE_OR_EXTENDS is never used.
TODO: when/if MySQL starts to use also partial-field
prefixes, we have to deal with stripping of spaces
and comparison of non-latin1 char type fields in
innobase_mysql_cmp() to get PAGE_CUR_LE_OR_EXTENDS to
work correctly. */
case HA_READ_MBR_CONTAIN:
case HA_READ_MBR_INTERSECT:
case HA_READ_MBR_WITHIN:
case HA_READ_MBR_DISJOINT:
case HA_READ_MBR_EQUAL:
return(PAGE_CUR_UNSUPP);
/* do not use "default:" in order to produce a gcc warning:
enumeration value '...' not handled in switch
(if -Wswitch or -Wall is used) */
}
my_error(ER_CHECK_NOT_IMPLEMENTED, MYF(0), "this functionality");
return(PAGE_CUR_UNSUPP);
}
/*
BACKGROUND INFO: HOW A SELECT SQL QUERY IS EXECUTED
---------------------------------------------------
The following does not cover all the details, but explains how we determine
the start of a new SQL statement, and what is associated with it.
For each table in the database the MySQL interpreter may have several
table handle instances in use, also in a single SQL query. For each table
handle instance there is an InnoDB 'prebuilt' struct which contains most
of the InnoDB data associated with this table handle instance.
A) if the user has not explicitly set any MySQL table level locks:
1) MySQL calls ::external_lock to set an 'intention' table level lock on
the table of the handle instance. There we set
prebuilt->sql_stat_start = TRUE. The flag sql_stat_start should be set
true if we are taking this table handle instance to use in a new SQL
statement issued by the user. We also increment trx->n_mysql_tables_in_use.
2) If prebuilt->sql_stat_start == TRUE we 'pre-compile' the MySQL search
instructions to prebuilt->template of the table handle instance in
::index_read. The template is used to save CPU time in large joins.
3) In row_search_for_mysql, if prebuilt->sql_stat_start is true, we
allocate a new consistent read view for the trx if it does not yet have one,
or in the case of a locking read, set an InnoDB 'intention' table level
lock on the table.
4) We do the SELECT. MySQL may repeatedly call ::index_read for the
same table handle instance, if it is a join.
5) When the SELECT ends, MySQL removes its intention table level locks
in ::external_lock. When trx->n_mysql_tables_in_use drops to zero,
(a) we execute a COMMIT there if the autocommit is on,
(b) we also release possible 'SQL statement level resources' InnoDB may
have for this SQL statement. The MySQL interpreter does NOT execute
autocommit for pure read transactions, though it should. That is why the
table handler in that case has to execute the COMMIT in ::external_lock.
B) If the user has explicitly set MySQL table level locks, then MySQL
does NOT call ::external_lock at the start of the statement. To determine
when we are at the start of a new SQL statement we at the start of
::index_read also compare the query id to the latest query id where the
table handle instance was used. If it has changed, we know we are at the
start of a new SQL statement. Since the query id can theoretically
overwrap, we use this test only as a secondary way of determining the
start of a new SQL statement. */
/**********************************************************************//**
Positions an index cursor to the index specified in the handle. Fetches the
row if any.
@return 0, HA_ERR_KEY_NOT_FOUND, or error number */
UNIV_INTERN
int
ha_innobase::index_read(
/*====================*/
uchar* buf, /*!< in/out: buffer for the returned
row */
const uchar* key_ptr, /*!< in: key value; if this is NULL
we position the cursor at the
start or end of index; this can
also contain an InnoDB row id, in
which case key_len is the InnoDB
row id length; the key value can
also be a prefix of a full key value,
and the last column can be a prefix
of a full column */
uint key_len,/*!< in: key value length */
enum ha_rkey_function find_flag)/*!< in: search flags from my_base.h */
{
ulint mode;
dict_index_t* index;
ulint match_mode = 0;
int error;
dberr_t ret;
DBUG_ENTER("index_read");
DEBUG_SYNC_C("ha_innobase_index_read_begin");
ut_a(prebuilt->trx == thd_to_trx(user_thd));
ut_ad(key_len != 0 || find_flag != HA_READ_KEY_EXACT);
ha_statistic_increment(&SSV::ha_read_key_count);
index = prebuilt->index;
if (UNIV_UNLIKELY(index == NULL) || dict_index_is_corrupted(index)) {
prebuilt->index_usable = FALSE;
DBUG_RETURN(HA_ERR_CRASHED);
}
if (UNIV_UNLIKELY(!prebuilt->index_usable)) {
DBUG_RETURN(dict_index_is_corrupted(index)
? HA_ERR_INDEX_CORRUPT
: HA_ERR_TABLE_DEF_CHANGED);
}
if (index->type & DICT_FTS) {
DBUG_RETURN(HA_ERR_KEY_NOT_FOUND);
}
/* Note that if the index for which the search template is built is not
necessarily prebuilt->index, but can also be the clustered index */
if (prebuilt->sql_stat_start) {
build_template(false);
}
if (key_ptr) {
/* Convert the search key value to InnoDB format into
prebuilt->search_tuple */
row_sel_convert_mysql_key_to_innobase(
prebuilt->search_tuple,
prebuilt->srch_key_val1,
prebuilt->srch_key_val_len,
index,
(byte*) key_ptr,
(ulint) key_len,
prebuilt->trx);
DBUG_ASSERT(prebuilt->search_tuple->n_fields > 0);
} else {
/* We position the cursor to the last or the first entry
in the index */
dtuple_set_n_fields(prebuilt->search_tuple, 0);
}
mode = convert_search_mode_to_innobase(find_flag);
match_mode = 0;
if (find_flag == HA_READ_KEY_EXACT) {
match_mode = ROW_SEL_EXACT;
} else if (find_flag == HA_READ_PREFIX
|| find_flag == HA_READ_PREFIX_LAST) {
match_mode = ROW_SEL_EXACT_PREFIX;
}
last_match_mode = (uint) match_mode;
if (mode != PAGE_CUR_UNSUPP) {
innobase_srv_conc_enter_innodb(prebuilt->trx);
ret = row_search_for_mysql((byte*) buf, mode, prebuilt,
match_mode, 0);
innobase_srv_conc_exit_innodb(prebuilt->trx);
} else {
ret = DB_UNSUPPORTED;
}
switch (ret) {
case DB_SUCCESS:
error = 0;
table->status = 0;
srv_stats.n_rows_read.add((size_t) prebuilt->trx->id, 1);
break;
case DB_RECORD_NOT_FOUND:
error = HA_ERR_KEY_NOT_FOUND;
table->status = STATUS_NOT_FOUND;
break;
case DB_END_OF_INDEX:
error = HA_ERR_KEY_NOT_FOUND;
table->status = STATUS_NOT_FOUND;
break;
case DB_TABLESPACE_DELETED:
ib_senderrf(
prebuilt->trx->mysql_thd, IB_LOG_LEVEL_ERROR,
ER_TABLESPACE_DISCARDED,
table->s->table_name.str);
table->status = STATUS_NOT_FOUND;
error = HA_ERR_NO_SUCH_TABLE;
break;
case DB_TABLESPACE_NOT_FOUND:
ib_senderrf(
prebuilt->trx->mysql_thd, IB_LOG_LEVEL_ERROR,
ER_TABLESPACE_MISSING, MYF(0),
table->s->table_name.str);
table->status = STATUS_NOT_FOUND;
error = HA_ERR_NO_SUCH_TABLE;
break;
default:
error = convert_error_code_to_mysql(
ret, prebuilt->table->flags, user_thd);
table->status = STATUS_NOT_FOUND;
break;
}
DBUG_RETURN(error);
}
/*******************************************************************//**
The following functions works like index_read, but it find the last
row with the current key value or prefix.
@return 0, HA_ERR_KEY_NOT_FOUND, or an error code */
UNIV_INTERN
int
ha_innobase::index_read_last(
/*=========================*/
uchar* buf, /*!< out: fetched row */
const uchar* key_ptr,/*!< in: key value, or a prefix of a full
key value */
uint key_len)/*!< in: length of the key val or prefix
in bytes */
{
return(index_read(buf, key_ptr, key_len, HA_READ_PREFIX_LAST));
}
/********************************************************************//**
Get the index for a handle. Does not change active index.
@return NULL or index instance. */
UNIV_INTERN
dict_index_t*
ha_innobase::innobase_get_index(
/*============================*/
uint keynr) /*!< in: use this index; MAX_KEY means always
clustered index, even if it was internally
generated by InnoDB */
{
KEY* key = 0;
dict_index_t* index = 0;
DBUG_ENTER("innobase_get_index");
if (keynr != MAX_KEY && table->s->keys > 0) {
key = table->key_info + keynr;
index = innobase_index_lookup(share, keynr);
if (index) {
ut_a(ut_strcmp(index->name, key->name) == 0);
} else {
/* Can't find index with keynr in the translation
table. Only print message if the index translation
table exists */
if (share->idx_trans_tbl.index_mapping) {
sql_print_warning("InnoDB could not find "
"index %s key no %u for "
"table %s through its "
"index translation table",
key ? key->name : "NULL",
keynr,
prebuilt->table->name);
}
index = dict_table_get_index_on_name(prebuilt->table,
key->name);
}
} else {
index = dict_table_get_first_index(prebuilt->table);
}
if (!index) {
sql_print_error(
"Innodb could not find key n:o %u with name %s "
"from dict cache for table %s",
keynr, key ? key->name : "NULL",
prebuilt->table->name);
}
DBUG_RETURN(index);
}
/********************************************************************//**
Changes the active index of a handle.
@return 0 or error code */
UNIV_INTERN
int
ha_innobase::change_active_index(
/*=============================*/
uint keynr) /*!< in: use this index; MAX_KEY means always clustered
index, even if it was internally generated by
InnoDB */
{
DBUG_ENTER("change_active_index");
ut_ad(user_thd == ha_thd());
ut_a(prebuilt->trx == thd_to_trx(user_thd));
active_index = keynr;
prebuilt->index = innobase_get_index(keynr);
if (UNIV_UNLIKELY(!prebuilt->index)) {
sql_print_warning("InnoDB: change_active_index(%u) failed",
keynr);
prebuilt->index_usable = FALSE;
DBUG_RETURN(1);
}
prebuilt->index_usable = row_merge_is_index_usable(prebuilt->trx,
prebuilt->index);
if (UNIV_UNLIKELY(!prebuilt->index_usable)) {
if (dict_index_is_corrupted(prebuilt->index)) {
char index_name[MAX_FULL_NAME_LEN + 1];
char table_name[MAX_FULL_NAME_LEN + 1];
innobase_format_name(
index_name, sizeof index_name,
prebuilt->index->name, TRUE);
innobase_format_name(
table_name, sizeof table_name,
prebuilt->index->table->name, FALSE);
push_warning_printf(
user_thd, Sql_condition::WARN_LEVEL_WARN,
HA_ERR_INDEX_CORRUPT,
"InnoDB: Index %s for table %s is"
" marked as corrupted",
index_name, table_name);
DBUG_RETURN(HA_ERR_INDEX_CORRUPT);
} else {
push_warning_printf(
user_thd, Sql_condition::WARN_LEVEL_WARN,
HA_ERR_TABLE_DEF_CHANGED,
"InnoDB: insufficient history for index %u",
keynr);
}
/* The caller seems to ignore this. Thus, we must check
this again in row_search_for_mysql(). */
DBUG_RETURN(HA_ERR_TABLE_DEF_CHANGED);
}
ut_a(prebuilt->search_tuple != 0);
dtuple_set_n_fields(prebuilt->search_tuple, prebuilt->index->n_fields);
dict_index_copy_types(prebuilt->search_tuple, prebuilt->index,
prebuilt->index->n_fields);
/* MySQL changes the active index for a handle also during some
queries, for example SELECT MAX(a), SUM(a) first retrieves the MAX()
and then calculates the sum. Previously we played safe and used
the flag ROW_MYSQL_WHOLE_ROW below, but that caused unnecessary
copying. Starting from MySQL-4.1 we use a more efficient flag here. */
build_template(false);
DBUG_RETURN(0);
}
/**********************************************************************//**
Positions an index cursor to the index specified in keynr. Fetches the
row if any.
??? This is only used to read whole keys ???
@return error number or 0 */
UNIV_INTERN
int
ha_innobase::index_read_idx(
/*========================*/
uchar* buf, /*!< in/out: buffer for the returned
row */
uint keynr, /*!< in: use this index */
const uchar* key, /*!< in: key value; if this is NULL
we position the cursor at the
start or end of index */
uint key_len, /*!< in: key value length */
enum ha_rkey_function find_flag)/*!< in: search flags from my_base.h */
{
if (change_active_index(keynr)) {
return(1);
}
return(index_read(buf, key, key_len, find_flag));
}
/***********************************************************************//**
Reads the next or previous row from a cursor, which must have previously been
positioned using index_read.
@return 0, HA_ERR_END_OF_FILE, or error number */
UNIV_INTERN
int
ha_innobase::general_fetch(
/*=======================*/
uchar* buf, /*!< in/out: buffer for next row in MySQL
format */
uint direction, /*!< in: ROW_SEL_NEXT or ROW_SEL_PREV */
uint match_mode) /*!< in: 0, ROW_SEL_EXACT, or
ROW_SEL_EXACT_PREFIX */
{
dberr_t ret;
int error;
DBUG_ENTER("general_fetch");
ut_a(prebuilt->trx == thd_to_trx(user_thd));
innobase_srv_conc_enter_innodb(prebuilt->trx);
ret = row_search_for_mysql(
(byte*) buf, 0, prebuilt, match_mode, direction);
innobase_srv_conc_exit_innodb(prebuilt->trx);
switch (ret) {
case DB_SUCCESS:
error = 0;
table->status = 0;
srv_stats.n_rows_read.add((size_t) prebuilt->trx->id, 1);
break;
case DB_RECORD_NOT_FOUND:
error = HA_ERR_END_OF_FILE;
table->status = STATUS_NOT_FOUND;
break;
case DB_END_OF_INDEX:
error = HA_ERR_END_OF_FILE;
table->status = STATUS_NOT_FOUND;
break;
case DB_TABLESPACE_DELETED:
ib_senderrf(
prebuilt->trx->mysql_thd, IB_LOG_LEVEL_ERROR,
ER_TABLESPACE_DISCARDED,
table->s->table_name.str);
table->status = STATUS_NOT_FOUND;
error = HA_ERR_NO_SUCH_TABLE;
break;
case DB_TABLESPACE_NOT_FOUND:
ib_senderrf(
prebuilt->trx->mysql_thd, IB_LOG_LEVEL_ERROR,
ER_TABLESPACE_MISSING,
table->s->table_name.str);
table->status = STATUS_NOT_FOUND;
error = HA_ERR_NO_SUCH_TABLE;
break;
default:
error = convert_error_code_to_mysql(
ret, prebuilt->table->flags, user_thd);
table->status = STATUS_NOT_FOUND;
break;
}
DBUG_RETURN(error);
}
/***********************************************************************//**
Reads the next row from a cursor, which must have previously been
positioned using index_read.
@return 0, HA_ERR_END_OF_FILE, or error number */
UNIV_INTERN
int
ha_innobase::index_next(
/*====================*/
uchar* buf) /*!< in/out: buffer for next row in MySQL
format */
{
ha_statistic_increment(&SSV::ha_read_next_count);
return(general_fetch(buf, ROW_SEL_NEXT, 0));
}
/*******************************************************************//**
Reads the next row matching to the key value given as the parameter.
@return 0, HA_ERR_END_OF_FILE, or error number */
UNIV_INTERN
int
ha_innobase::index_next_same(
/*=========================*/
uchar* buf, /*!< in/out: buffer for the row */
const uchar* key, /*!< in: key value */
uint keylen) /*!< in: key value length */
{
ha_statistic_increment(&SSV::ha_read_next_count);
return(general_fetch(buf, ROW_SEL_NEXT, last_match_mode));
}
/***********************************************************************//**
Reads the previous row from a cursor, which must have previously been
positioned using index_read.
@return 0, HA_ERR_END_OF_FILE, or error number */
UNIV_INTERN
int
ha_innobase::index_prev(
/*====================*/
uchar* buf) /*!< in/out: buffer for previous row in MySQL format */
{
ha_statistic_increment(&SSV::ha_read_prev_count);
return(general_fetch(buf, ROW_SEL_PREV, 0));
}
/********************************************************************//**
Positions a cursor on the first record in an index and reads the
corresponding row to buf.
@return 0, HA_ERR_END_OF_FILE, or error code */
UNIV_INTERN
int
ha_innobase::index_first(
/*=====================*/
uchar* buf) /*!< in/out: buffer for the row */
{
int error;
DBUG_ENTER("index_first");
ha_statistic_increment(&SSV::ha_read_first_count);
error = index_read(buf, NULL, 0, HA_READ_AFTER_KEY);
/* MySQL does not seem to allow this to return HA_ERR_KEY_NOT_FOUND */
if (error == HA_ERR_KEY_NOT_FOUND) {
error = HA_ERR_END_OF_FILE;
}
DBUG_RETURN(error);
}
/********************************************************************//**
Positions a cursor on the last record in an index and reads the
corresponding row to buf.
@return 0, HA_ERR_END_OF_FILE, or error code */
UNIV_INTERN
int
ha_innobase::index_last(
/*====================*/
uchar* buf) /*!< in/out: buffer for the row */
{
int error;
DBUG_ENTER("index_last");
ha_statistic_increment(&SSV::ha_read_last_count);
error = index_read(buf, NULL, 0, HA_READ_BEFORE_KEY);
/* MySQL does not seem to allow this to return HA_ERR_KEY_NOT_FOUND */
if (error == HA_ERR_KEY_NOT_FOUND) {
error = HA_ERR_END_OF_FILE;
}
DBUG_RETURN(error);
}
/****************************************************************//**
Initialize a table scan.
@return 0 or error number */
UNIV_INTERN
int
ha_innobase::rnd_init(
/*==================*/
bool scan) /*!< in: TRUE if table/index scan FALSE otherwise */
{
int err;
/* Store the active index value so that we can restore the original
value after a scan */
if (prebuilt->clust_index_was_generated) {
err = change_active_index(MAX_KEY);
} else {
err = change_active_index(primary_key);
}
/* Don't use semi-consistent read in random row reads (by position).
This means we must disable semi_consistent_read if scan is false */
if (!scan) {
try_semi_consistent_read(0);
}
start_of_scan = 1;
return(err);
}
/*****************************************************************//**
Ends a table scan.
@return 0 or error number */
UNIV_INTERN
int
ha_innobase::rnd_end(void)
/*======================*/
{
return(index_end());
}
/*****************************************************************//**
Reads the next row in a table scan (also used to read the FIRST row
in a table scan).
@return 0, HA_ERR_END_OF_FILE, or error number */
UNIV_INTERN
int
ha_innobase::rnd_next(
/*==================*/
uchar* buf) /*!< in/out: returns the row in this buffer,
in MySQL format */
{
int error;
DBUG_ENTER("rnd_next");
ha_statistic_increment(&SSV::ha_read_rnd_next_count);
if (start_of_scan) {
error = index_first(buf);
if (error == HA_ERR_KEY_NOT_FOUND) {
error = HA_ERR_END_OF_FILE;
}
start_of_scan = 0;
} else {
error = general_fetch(buf, ROW_SEL_NEXT, 0);
}
DBUG_RETURN(error);
}
/**********************************************************************//**
Fetches a row from the table based on a row reference.
@return 0, HA_ERR_KEY_NOT_FOUND, or error code */
UNIV_INTERN
int
ha_innobase::rnd_pos(
/*=================*/
uchar* buf, /*!< in/out: buffer for the row */
uchar* pos) /*!< in: primary key value of the row in the
MySQL format, or the row id if the clustered
index was internally generated by InnoDB; the
length of data in pos has to be ref_length */
{
int error;
DBUG_ENTER("rnd_pos");
DBUG_DUMP("key", pos, ref_length);
ha_statistic_increment(&SSV::ha_read_rnd_count);
ut_a(prebuilt->trx == thd_to_trx(ha_thd()));
/* Note that we assume the length of the row reference is fixed
for the table, and it is == ref_length */
error = index_read(buf, pos, ref_length, HA_READ_KEY_EXACT);
if (error) {
DBUG_PRINT("error", ("Got error: %d", error));
}
DBUG_RETURN(error);
}
/**********************************************************************//**
Initialize FT index scan
@return 0 or error number */
UNIV_INTERN
int
ha_innobase::ft_init()
/*==================*/
{
DBUG_ENTER("ft_init");
trx_t* trx = check_trx_exists(ha_thd());
/* FTS queries are not treated as autocommit non-locking selects.
This is because the FTS implementation can acquire locks behind
the scenes. This has not been verified but it is safer to treat
them as regular read only transactions for now. */
if (!trx_is_started(trx)) {
++trx->will_lock;
}
DBUG_RETURN(rnd_init(false));
}
/**********************************************************************//**
Initialize FT index scan
@return FT_INFO structure if successful or NULL */
UNIV_INTERN
FT_INFO*
ha_innobase::ft_init_ext(
/*=====================*/
uint flags, /* in: */
uint keynr, /* in: */
String* key) /* in: */
{
trx_t* trx;
dict_table_t* ft_table;
dberr_t error;
byte* query = (byte*) key->ptr();
ulint query_len = key->length();
const CHARSET_INFO* char_set = key->charset();
NEW_FT_INFO* fts_hdl = NULL;
dict_index_t* index;
fts_result_t* result;
char buf_tmp[8192];
ulint buf_tmp_used;
uint num_errors;
if (fts_enable_diag_print) {
fprintf(stderr, "keynr=%u, '%.*s'\n",
keynr, (int) key->length(), (byte*) key->ptr());
if (flags & FT_BOOL) {
fprintf(stderr, "BOOL search\n");
} else {
fprintf(stderr, "NL search\n");
}
}
/* FIXME: utf32 and utf16 are not compatible with some
string function used. So to convert them to uft8 before
proceed. */
if (strcmp(char_set->csname, "utf32") == 0
|| strcmp(char_set->csname, "utf16") == 0) {
buf_tmp_used = innobase_convert_string(
buf_tmp, sizeof(buf_tmp) - 1,
&my_charset_utf8_general_ci,
query, query_len, (CHARSET_INFO*) char_set,
&num_errors);
query = (byte*) buf_tmp;
query_len = buf_tmp_used;
query[query_len] = 0;
}
trx = prebuilt->trx;
/* FTS queries are not treated as autocommit non-locking selects.
This is because the FTS implementation can acquire locks behind
the scenes. This has not been verified but it is safer to treat
them as regular read only transactions for now. */
if (!trx_is_started(trx)) {
++trx->will_lock;
}
ft_table = prebuilt->table;
/* Table does not have an FTS index */
if (!ft_table->fts || ib_vector_is_empty(ft_table->fts->indexes)) {
my_error(ER_TABLE_HAS_NO_FT, MYF(0));
return(NULL);
}
/* If tablespace is discarded, we should return here */
if (dict_table_is_discarded(ft_table)) {
my_error(ER_NO_SUCH_TABLE, MYF(0), table->s->db.str,
table->s->table_name.str);
return(NULL);
}
if (keynr == NO_SUCH_KEY) {
/* FIXME: Investigate the NO_SUCH_KEY usage */
index = (dict_index_t*) ib_vector_getp(ft_table->fts->indexes, 0);
} else {
index = innobase_get_index(keynr);
}
if (!index || index->type != DICT_FTS) {
my_error(ER_TABLE_HAS_NO_FT, MYF(0));
return(NULL);
}
if (!(ft_table->fts->fts_status & ADDED_TABLE_SYNCED)) {
fts_init_index(ft_table, FALSE);
ft_table->fts->fts_status |= ADDED_TABLE_SYNCED;
}
error = fts_query(trx, index, flags, query, query_len, &result);
if (error != DB_SUCCESS) {
my_error(convert_error_code_to_mysql(error, 0, NULL),
MYF(0));
return(NULL);
}
/* Allocate FTS handler, and instantiate it before return */
fts_hdl = static_cast<NEW_FT_INFO*>(my_malloc(sizeof(NEW_FT_INFO),
MYF(0)));
fts_hdl->please = const_cast<_ft_vft*>(&ft_vft_result);
fts_hdl->could_you = const_cast<_ft_vft_ext*>(&ft_vft_ext_result);
fts_hdl->ft_prebuilt = prebuilt;
fts_hdl->ft_result = result;
/* FIXME: Re-evluate the condition when Bug 14469540
is resolved */
prebuilt->in_fts_query = true;
return((FT_INFO*) fts_hdl);
}
/*****************************************************************//**
Set up search tuple for a query through FTS_DOC_ID_INDEX on
supplied Doc ID. This is used by MySQL to retrieve the documents
once the search result (Doc IDs) is available */
static
void
innobase_fts_create_doc_id_key(
/*===========================*/
dtuple_t* tuple, /* in/out: prebuilt->search_tuple */
const dict_index_t*
index, /* in: index (FTS_DOC_ID_INDEX) */
doc_id_t* doc_id) /* in/out: doc id to search, value
could be changed to storage format
used for search. */
{
doc_id_t temp_doc_id;
dfield_t* dfield = dtuple_get_nth_field(tuple, 0);
ut_a(dict_index_get_n_unique(index) == 1);
dtuple_set_n_fields(tuple, index->n_fields);
dict_index_copy_types(tuple, index, index->n_fields);
#ifdef UNIV_DEBUG
/* The unique Doc ID field should be an eight-bytes integer */
dict_field_t* field = dict_index_get_nth_field(index, 0);
ut_a(field->col->mtype == DATA_INT);
ut_ad(sizeof(*doc_id) == field->fixed_len);
ut_ad(innobase_strcasecmp(index->name, FTS_DOC_ID_INDEX_NAME) == 0);
#endif /* UNIV_DEBUG */
/* Convert to storage byte order */
mach_write_to_8(reinterpret_cast<byte*>(&temp_doc_id), *doc_id);
*doc_id = temp_doc_id;
dfield_set_data(dfield, doc_id, sizeof(*doc_id));
dtuple_set_n_fields_cmp(tuple, 1);
for (ulint i = 1; i < index->n_fields; i++) {
dfield = dtuple_get_nth_field(tuple, i);
dfield_set_null(dfield);
}
}
/**********************************************************************//**
Fetch next result from the FT result set
@return error code */
UNIV_INTERN
int
ha_innobase::ft_read(
/*=================*/
uchar* buf) /*!< in/out: buf contain result row */
{
fts_result_t* result;
int error;
row_prebuilt_t* ft_prebuilt;
ft_prebuilt = ((NEW_FT_INFO*) ft_handler)->ft_prebuilt;
ut_a(ft_prebuilt == prebuilt);
result = ((NEW_FT_INFO*) ft_handler)->ft_result;
if (result->current == NULL) {
/* This is the case where the FTS query did not
contain and matching documents. */
if (result->rankings_by_id != NULL) {
/* Now that we have the complete result, we
need to sort the document ids on their rank
calculation. */
fts_query_sort_result_on_rank(result);
result->current = const_cast<ib_rbt_node_t*>(
rbt_first(result->rankings_by_rank));
} else {
ut_a(result->current == NULL);
}
} else {
result->current = const_cast<ib_rbt_node_t*>(
rbt_next(result->rankings_by_rank, result->current));
}
next_record:
if (result->current != NULL) {
dict_index_t* index;
dtuple_t* tuple = prebuilt->search_tuple;
doc_id_t search_doc_id;
/* If we only need information from result we can return
without fetching the table row */
if (ft_prebuilt->read_just_key) {
table->status= 0;
return(0);
}
index = dict_table_get_index_on_name(
prebuilt->table, FTS_DOC_ID_INDEX_NAME);
/* Must find the index */
ut_a(index);
/* Switch to the FTS doc id index */
prebuilt->index = index;
fts_ranking_t* ranking = rbt_value(
fts_ranking_t, result->current);
search_doc_id = ranking->doc_id;
/* We pass a pointer of search_doc_id because it will be
converted to storage byte order used in the search
tuple. */
innobase_fts_create_doc_id_key(tuple, index, &search_doc_id);
innobase_srv_conc_enter_innodb(prebuilt->trx);
dberr_t ret = row_search_for_mysql(
(byte*) buf, PAGE_CUR_GE, prebuilt, ROW_SEL_EXACT, 0);
innobase_srv_conc_exit_innodb(prebuilt->trx);
switch (ret) {
case DB_SUCCESS:
error = 0;
table->status = 0;
break;
case DB_RECORD_NOT_FOUND:
result->current = const_cast<ib_rbt_node_t*>(
rbt_next(result->rankings_by_rank,
result->current));
if (!result->current) {
/* exhaust the result set, should return
HA_ERR_END_OF_FILE just like
ha_innobase::general_fetch() and/or
ha_innobase::index_first() etc. */
error = HA_ERR_END_OF_FILE;
table->status = STATUS_NOT_FOUND;
} else {
goto next_record;
}
break;
case DB_END_OF_INDEX:
error = HA_ERR_END_OF_FILE;
table->status = STATUS_NOT_FOUND;
break;
case DB_TABLESPACE_DELETED:
ib_senderrf(
prebuilt->trx->mysql_thd, IB_LOG_LEVEL_ERROR,
ER_TABLESPACE_DISCARDED,
table->s->table_name.str);
table->status = STATUS_NOT_FOUND;
error = HA_ERR_NO_SUCH_TABLE;
break;
case DB_TABLESPACE_NOT_FOUND:
ib_senderrf(
prebuilt->trx->mysql_thd, IB_LOG_LEVEL_ERROR,
ER_TABLESPACE_MISSING,
table->s->table_name.str);
table->status = STATUS_NOT_FOUND;
error = HA_ERR_NO_SUCH_TABLE;
break;
default:
error = convert_error_code_to_mysql(
ret, 0, user_thd);
table->status = STATUS_NOT_FOUND;
break;
}
return(error);
}
return(HA_ERR_END_OF_FILE);
}
/*************************************************************************
*/
void
ha_innobase::ft_end()
{
fprintf(stderr, "ft_end()\n");
rnd_end();
}
/*********************************************************************//**
Stores a reference to the current row to 'ref' field of the handle. Note
that in the case where we have generated the clustered index for the
table, the function parameter is illogical: we MUST ASSUME that 'record'
is the current 'position' of the handle, because if row ref is actually
the row id internally generated in InnoDB, then 'record' does not contain
it. We just guess that the row id must be for the record where the handle
was positioned the last time. */
UNIV_INTERN
void
ha_innobase::position(
/*==================*/
const uchar* record) /*!< in: row in MySQL format */
{
uint len;
ut_a(prebuilt->trx == thd_to_trx(ha_thd()));
if (prebuilt->clust_index_was_generated) {
/* No primary key was defined for the table and we
generated the clustered index from row id: the
row reference will be the row id, not any key value
that MySQL knows of */
len = DATA_ROW_ID_LEN;
memcpy(ref, prebuilt->row_id, len);
} else {
len = store_key_val_for_row(primary_key, (char*) ref,
ref_length, record);
}
/* We assume that the 'ref' value len is always fixed for the same
table. */
if (len != ref_length) {
sql_print_error("Stored ref len is %lu, but table ref len is "
"%lu", (ulong) len, (ulong) ref_length);
}
}
/*****************************************************************//**
Check whether there exist a column named as "FTS_DOC_ID", which is
reserved for InnoDB FTS Doc ID
@return true if there exist a "FTS_DOC_ID" column */
static
bool
create_table_check_doc_id_col(
/*==========================*/
trx_t* trx, /*!< in: InnoDB transaction handle */
const TABLE* form, /*!< in: information on table
columns and indexes */
ulint* doc_id_col) /*!< out: Doc ID column number if
there exist a FTS_DOC_ID column,
ULINT_UNDEFINED if column is of the
wrong type/name/size */
{
for (ulint i = 0; i < form->s->fields; i++) {
const Field* field;
ulint col_type;
ulint col_len;
ulint unsigned_type;
field = form->field[i];
col_type = get_innobase_type_from_mysql_type(&unsigned_type,
field);
col_len = field->pack_length();
if (innobase_strcasecmp(field->field_name,
FTS_DOC_ID_COL_NAME) == 0) {
/* Note the name is case sensitive due to
our internal query parser */
if (col_type == DATA_INT
&& !field->real_maybe_null()
&& col_len == sizeof(doc_id_t)
&& (strcmp(field->field_name,
FTS_DOC_ID_COL_NAME) == 0)) {
*doc_id_col = i;
} else {
push_warning_printf(
trx->mysql_thd,
Sql_condition::WARN_LEVEL_WARN,
ER_ILLEGAL_HA_CREATE_OPTION,
"InnoDB: FTS_DOC_ID column must be "
"of BIGINT NOT NULL type, and named "
"in all capitalized characters");
my_error(ER_WRONG_COLUMN_NAME, MYF(0),
field->field_name);
*doc_id_col = ULINT_UNDEFINED;
}
return(true);
}
}
return(false);
}
/*****************************************************************//**
Creates a table definition to an InnoDB database. */
static __attribute__((nonnull, warn_unused_result))
int
create_table_def(
/*=============*/
trx_t* trx, /*!< in: InnoDB transaction handle */
const TABLE* form, /*!< in: information on table
columns and indexes */
const char* table_name, /*!< in: table name */
const char* temp_path, /*!< in: if this is a table explicitly
created by the user with the
TEMPORARY keyword, then this
parameter is the dir path where the
table should be placed if we create
an .ibd file for it (no .ibd extension
in the path, though). Otherwise this
is a zero length-string */
const char* remote_path, /*!< in: Remote path or zero length-string */
ulint flags, /*!< in: table flags */
ulint flags2) /*!< in: table flags2 */
{
THD* thd = trx->mysql_thd;
dict_table_t* table;
ulint n_cols;
dberr_t err;
ulint col_type;
ulint col_len;
ulint nulls_allowed;
ulint unsigned_type;
ulint binary_type;
ulint long_true_varchar;
ulint charset_no;
ulint i;
ulint doc_id_col = 0;
ibool has_doc_id_col = FALSE;
mem_heap_t* heap;
DBUG_ENTER("create_table_def");
DBUG_PRINT("enter", ("table_name: %s", table_name));
DBUG_ASSERT(thd != NULL);
/* MySQL does the name length check. But we do additional check
on the name length here */
const size_t table_name_len = strlen(table_name);
if (table_name_len > MAX_FULL_NAME_LEN) {
push_warning_printf(
thd, Sql_condition::WARN_LEVEL_WARN,
ER_TABLE_NAME,
"InnoDB: Table Name or Database Name is too long");
DBUG_RETURN(ER_TABLE_NAME);
}
if (table_name[table_name_len - 1] == '/') {
push_warning_printf(
thd, Sql_condition::WARN_LEVEL_WARN,
ER_TABLE_NAME,
"InnoDB: Table name is empty");
DBUG_RETURN(ER_WRONG_TABLE_NAME);
}
n_cols = form->s->fields;
/* Check whether there already exists a FTS_DOC_ID column */
if (create_table_check_doc_id_col(trx, form, &doc_id_col)){
/* Raise error if the Doc ID column is of wrong type or name */
if (doc_id_col == ULINT_UNDEFINED) {
trx_commit_for_mysql(trx);
err = DB_ERROR;
goto error_ret;
} else {
has_doc_id_col = TRUE;
}
}
/* We pass 0 as the space id, and determine at a lower level the space
id where to store the table */
if (flags2 & DICT_TF2_FTS) {
/* Adjust for the FTS hidden field */
if (!has_doc_id_col) {
table = dict_mem_table_create(table_name, 0, n_cols + 1,
flags, flags2);
/* Set the hidden doc_id column. */
table->fts->doc_col = n_cols;
} else {
table = dict_mem_table_create(table_name, 0, n_cols,
flags, flags2);
table->fts->doc_col = doc_id_col;
}
} else {
table = dict_mem_table_create(table_name, 0, n_cols,
flags, flags2);
}
if (flags2 & DICT_TF2_TEMPORARY) {
ut_a(strlen(temp_path));
table->dir_path_of_temp_table =
mem_heap_strdup(table->heap, temp_path);
}
if (DICT_TF_HAS_DATA_DIR(flags)) {
ut_a(strlen(remote_path));
table->data_dir_path = mem_heap_strdup(table->heap, remote_path);
} else {
table->data_dir_path = NULL;
}
heap = mem_heap_create(1000);
for (i = 0; i < n_cols; i++) {
Field* field = form->field[i];
col_type = get_innobase_type_from_mysql_type(&unsigned_type,
field);
if (!col_type) {
push_warning_printf(
thd, Sql_condition::WARN_LEVEL_WARN,
ER_CANT_CREATE_TABLE,
"Error creating table '%s' with "
"column '%s'. Please check its "
"column type and try to re-create "
"the table with an appropriate "
"column type.",
table->name, field->field_name);
goto err_col;
}
nulls_allowed = field->real_maybe_null() ? 0 : DATA_NOT_NULL;
binary_type = field->binary() ? DATA_BINARY_TYPE : 0;
charset_no = 0;
if (dtype_is_string_type(col_type)) {
charset_no = (ulint) field->charset()->number;
if (UNIV_UNLIKELY(charset_no > MAX_CHAR_COLL_NUM)) {
/* in data0type.h we assume that the
number fits in one byte in prtype */
push_warning_printf(
thd, Sql_condition::WARN_LEVEL_WARN,
ER_CANT_CREATE_TABLE,
"In InnoDB, charset-collation codes"
" must be below 256."
" Unsupported code %lu.",
(ulong) charset_no);
mem_heap_free(heap);
DBUG_RETURN(ER_CANT_CREATE_TABLE);
}
}
/* we assume in dtype_form_prtype() that this fits in
two bytes */
ut_a(static_cast<uint>(field->type()) <= MAX_CHAR_COLL_NUM);
col_len = field->pack_length();
/* The MySQL pack length contains 1 or 2 bytes length field
for a true VARCHAR. Let us subtract that, so that the InnoDB
column length in the InnoDB data dictionary is the real
maximum byte length of the actual data. */
long_true_varchar = 0;
if (field->type() == MYSQL_TYPE_VARCHAR) {
col_len -= ((Field_varstring*) field)->length_bytes;
if (((Field_varstring*) field)->length_bytes == 2) {
long_true_varchar = DATA_LONG_TRUE_VARCHAR;
}
}
/* First check whether the column to be added has a
system reserved name. */
if (dict_col_name_is_reserved(field->field_name)){
my_error(ER_WRONG_COLUMN_NAME, MYF(0),
field->field_name);
err_col:
dict_mem_table_free(table);
mem_heap_free(heap);
trx_commit_for_mysql(trx);
err = DB_ERROR;
goto error_ret;
}
dict_mem_table_add_col(table, heap,
field->field_name,
col_type,
dtype_form_prtype(
(ulint) field->type()
| nulls_allowed | unsigned_type
| binary_type | long_true_varchar,
charset_no),
col_len);
}
/* Add the FTS doc_id hidden column. */
if (flags2 & DICT_TF2_FTS && !has_doc_id_col) {
fts_add_doc_id_column(table, heap);
}
err = row_create_table_for_mysql(table, trx, false);
mem_heap_free(heap);
DBUG_EXECUTE_IF("ib_create_err_tablespace_exist",
err = DB_TABLESPACE_EXISTS;);
if (err == DB_DUPLICATE_KEY || err == DB_TABLESPACE_EXISTS) {
char display_name[FN_REFLEN];
char* buf_end = innobase_convert_identifier(
display_name, sizeof(display_name) - 1,
table_name, strlen(table_name),
thd, TRUE);
*buf_end = '\0';
my_error(err == DB_DUPLICATE_KEY
? ER_TABLE_EXISTS_ERROR
: ER_TABLESPACE_EXISTS, MYF(0), display_name);
}
if (err == DB_SUCCESS && (flags2 & DICT_TF2_FTS)) {
fts_optimize_add_table(table);
}
error_ret:
DBUG_RETURN(convert_error_code_to_mysql(err, flags, thd));
}
/*****************************************************************//**
Creates an index in an InnoDB database. */
static
int
create_index(
/*=========*/
trx_t* trx, /*!< in: InnoDB transaction handle */
const TABLE* form, /*!< in: information on table
columns and indexes */
ulint flags, /*!< in: InnoDB table flags */
const char* table_name, /*!< in: table name */
uint key_num) /*!< in: index number */
{
dict_index_t* index;
int error;
const KEY* key;
ulint ind_type;
ulint* field_lengths;
DBUG_ENTER("create_index");
key = form->key_info + key_num;
/* Assert that "GEN_CLUST_INDEX" cannot be used as non-primary index */
ut_a(innobase_strcasecmp(key->name, innobase_index_reserve_name) != 0);
if (key->flags & HA_FULLTEXT) {
index = dict_mem_index_create(table_name, key->name, 0,
DICT_FTS,
key->user_defined_key_parts);
for (ulint i = 0; i < key->user_defined_key_parts; i++) {
KEY_PART_INFO* key_part = key->key_part + i;
dict_mem_index_add_field(
index, key_part->field->field_name, 0);
}
DBUG_RETURN(convert_error_code_to_mysql(
row_create_index_for_mysql(
index, trx, NULL),
flags, NULL));
}
ind_type = 0;
if (key_num == form->s->primary_key) {
ind_type |= DICT_CLUSTERED;
}
if (key->flags & HA_NOSAME) {
ind_type |= DICT_UNIQUE;
}
field_lengths = (ulint*) my_malloc(
key->user_defined_key_parts * sizeof *
field_lengths, MYF(MY_FAE));
/* We pass 0 as the space id, and determine at a lower level the space
id where to store the table */
index = dict_mem_index_create(table_name, key->name, 0,
ind_type, key->user_defined_key_parts);
for (ulint i = 0; i < key->user_defined_key_parts; i++) {
KEY_PART_INFO* key_part = key->key_part + i;
ulint prefix_len;
ulint col_type;
ulint is_unsigned;
/* (The flag HA_PART_KEY_SEG denotes in MySQL a
column prefix field in an index: we only store a
specified number of first bytes of the column to
the index field.) The flag does not seem to be
properly set by MySQL. Let us fall back on testing
the length of the key part versus the column. */
Field* field = NULL;
for (ulint j = 0; j < form->s->fields; j++) {
field = form->field[j];
if (0 == innobase_strcasecmp(
field->field_name,
key_part->field->field_name)) {
/* Found the corresponding column */
goto found;
}
}
ut_error;
found:
col_type = get_innobase_type_from_mysql_type(
&is_unsigned, key_part->field);
if (DATA_BLOB == col_type
|| (key_part->length < field->pack_length()
&& field->type() != MYSQL_TYPE_VARCHAR)
|| (field->type() == MYSQL_TYPE_VARCHAR
&& key_part->length < field->pack_length()
- ((Field_varstring*) field)->length_bytes)) {
switch (col_type) {
default:
prefix_len = key_part->length;
break;
case DATA_INT:
case DATA_FLOAT:
case DATA_DOUBLE:
case DATA_DECIMAL:
sql_print_error(
"MySQL is trying to create a column "
"prefix index field, on an "
"inappropriate data type. Table "
"name %s, column name %s.",
table_name,
key_part->field->field_name);
prefix_len = 0;
}
} else {
prefix_len = 0;
}
field_lengths[i] = key_part->length;
dict_mem_index_add_field(
index, key_part->field->field_name, prefix_len);
}
ut_ad(key->flags & HA_FULLTEXT || !(index->type & DICT_FTS));
/* Even though we've defined max_supported_key_part_length, we
still do our own checking using field_lengths to be absolutely
sure we don't create too long indexes. */
error = convert_error_code_to_mysql(
row_create_index_for_mysql(index, trx, field_lengths),
flags, NULL);
my_free(field_lengths);
DBUG_RETURN(error);
}
/*****************************************************************//**
Creates an index to an InnoDB table when the user has defined no
primary index. */
static
int
create_clustered_index_when_no_primary(
/*===================================*/
trx_t* trx, /*!< in: InnoDB transaction handle */
ulint flags, /*!< in: InnoDB table flags */
const char* table_name) /*!< in: table name */
{
dict_index_t* index;
dberr_t error;
/* We pass 0 as the space id, and determine at a lower level the space
id where to store the table */
index = dict_mem_index_create(table_name,
innobase_index_reserve_name,
0, DICT_CLUSTERED, 0);
error = row_create_index_for_mysql(index, trx, NULL);
return(convert_error_code_to_mysql(error, flags, NULL));
}
/*****************************************************************//**
Return a display name for the row format
@return row format name */
UNIV_INTERN
const char*
get_row_format_name(
/*================*/
enum row_type row_format) /*!< in: Row Format */
{
switch (row_format) {
case ROW_TYPE_COMPACT:
return("COMPACT");
case ROW_TYPE_COMPRESSED:
return("COMPRESSED");
case ROW_TYPE_DYNAMIC:
return("DYNAMIC");
case ROW_TYPE_REDUNDANT:
return("REDUNDANT");
case ROW_TYPE_DEFAULT:
return("DEFAULT");
case ROW_TYPE_FIXED:
return("FIXED");
case ROW_TYPE_PAGE:
case ROW_TYPE_NOT_USED:
break;
}
return("NOT USED");
}
/** If file-per-table is missing, issue warning and set ret false */
#define CHECK_ERROR_ROW_TYPE_NEEDS_FILE_PER_TABLE(use_tablespace)\
if (!use_tablespace) { \
push_warning_printf( \
thd, Sql_condition::WARN_LEVEL_WARN, \
ER_ILLEGAL_HA_CREATE_OPTION, \
"InnoDB: ROW_FORMAT=%s requires" \
" innodb_file_per_table.", \
get_row_format_name(row_format)); \
ret = "ROW_FORMAT"; \
}
/** If file-format is Antelope, issue warning and set ret false */
#define CHECK_ERROR_ROW_TYPE_NEEDS_GT_ANTELOPE \
if (srv_file_format < UNIV_FORMAT_B) { \
push_warning_printf( \
thd, Sql_condition::WARN_LEVEL_WARN, \
ER_ILLEGAL_HA_CREATE_OPTION, \
"InnoDB: ROW_FORMAT=%s requires" \
" innodb_file_format > Antelope.", \
get_row_format_name(row_format)); \
ret = "ROW_FORMAT"; \
}
/*****************************************************************//**
Validates the create options. We may build on this function
in future. For now, it checks two specifiers:
KEY_BLOCK_SIZE and ROW_FORMAT
If innodb_strict_mode is not set then this function is a no-op
@return NULL if valid, string if not. */
UNIV_INTERN
const char*
create_options_are_invalid(
/*=======================*/
THD* thd, /*!< in: connection thread. */
TABLE* form, /*!< in: information on table
columns and indexes */
HA_CREATE_INFO* create_info, /*!< in: create info. */
bool use_tablespace) /*!< in: srv_file_per_table */
{
ibool kbs_specified = FALSE;
const char* ret = NULL;
enum row_type row_format = form->s->row_type;
ut_ad(thd != NULL);
/* If innodb_strict_mode is not set don't do any validation. */
if (!(THDVAR(thd, strict_mode))) {
return(NULL);
}
ut_ad(form != NULL);
ut_ad(create_info != NULL);
/* First check if a non-zero KEY_BLOCK_SIZE was specified. */
if (create_info->key_block_size) {
kbs_specified = TRUE;
switch (create_info->key_block_size) {
ulint kbs_max;
case 1:
case 2:
case 4:
case 8:
case 16:
/* Valid KEY_BLOCK_SIZE, check its dependencies. */
if (!use_tablespace) {
push_warning(
thd, Sql_condition::WARN_LEVEL_WARN,
ER_ILLEGAL_HA_CREATE_OPTION,
"InnoDB: KEY_BLOCK_SIZE requires"
" innodb_file_per_table.");
ret = "KEY_BLOCK_SIZE";
}
if (srv_file_format < UNIV_FORMAT_B) {
push_warning(
thd, Sql_condition::WARN_LEVEL_WARN,
ER_ILLEGAL_HA_CREATE_OPTION,
"InnoDB: KEY_BLOCK_SIZE requires"
" innodb_file_format > Antelope.");
ret = "KEY_BLOCK_SIZE";
}
/* The maximum KEY_BLOCK_SIZE (KBS) is 16. But if
UNIV_PAGE_SIZE is smaller than 16k, the maximum
KBS is also smaller. */
kbs_max = ut_min(
1 << (UNIV_PAGE_SSIZE_MAX - 1),
1 << (PAGE_ZIP_SSIZE_MAX - 1));
if (create_info->key_block_size > kbs_max) {
push_warning_printf(
thd, Sql_condition::WARN_LEVEL_WARN,
ER_ILLEGAL_HA_CREATE_OPTION,
"InnoDB: KEY_BLOCK_SIZE=%ld"
" cannot be larger than %ld.",
create_info->key_block_size,
kbs_max);
ret = "KEY_BLOCK_SIZE";
}
break;
default:
push_warning_printf(
thd, Sql_condition::WARN_LEVEL_WARN,
ER_ILLEGAL_HA_CREATE_OPTION,
"InnoDB: invalid KEY_BLOCK_SIZE = %lu."
" Valid values are [1, 2, 4, 8, 16]",
create_info->key_block_size);
ret = "KEY_BLOCK_SIZE";
break;
}
}
/* Check for a valid Innodb ROW_FORMAT specifier and
other incompatibilities. */
switch (row_format) {
case ROW_TYPE_COMPRESSED:
CHECK_ERROR_ROW_TYPE_NEEDS_FILE_PER_TABLE(use_tablespace);
CHECK_ERROR_ROW_TYPE_NEEDS_GT_ANTELOPE;
break;
case ROW_TYPE_DYNAMIC:
CHECK_ERROR_ROW_TYPE_NEEDS_FILE_PER_TABLE(use_tablespace);
CHECK_ERROR_ROW_TYPE_NEEDS_GT_ANTELOPE;
/* fall through since dynamic also shuns KBS */
case ROW_TYPE_COMPACT:
case ROW_TYPE_REDUNDANT:
if (kbs_specified) {
push_warning_printf(
thd, Sql_condition::WARN_LEVEL_WARN,
ER_ILLEGAL_HA_CREATE_OPTION,
"InnoDB: cannot specify ROW_FORMAT = %s"
" with KEY_BLOCK_SIZE.",
get_row_format_name(row_format));
ret = "KEY_BLOCK_SIZE";
}
break;
case ROW_TYPE_DEFAULT:
break;
case ROW_TYPE_FIXED:
case ROW_TYPE_PAGE:
case ROW_TYPE_NOT_USED:
push_warning(
thd, Sql_condition::WARN_LEVEL_WARN,
ER_ILLEGAL_HA_CREATE_OPTION, \
"InnoDB: invalid ROW_FORMAT specifier.");
ret = "ROW_TYPE";
break;
}
/* Use DATA DIRECTORY only with file-per-table. */
if (create_info->data_file_name && !use_tablespace) {
push_warning(
thd, Sql_condition::WARN_LEVEL_WARN,
ER_ILLEGAL_HA_CREATE_OPTION,
"InnoDB: DATA DIRECTORY requires"
" innodb_file_per_table.");
ret = "DATA DIRECTORY";
}
/* Do not use DATA DIRECTORY with TEMPORARY TABLE. */
if (create_info->data_file_name
&& create_info->options & HA_LEX_CREATE_TMP_TABLE) {
push_warning(
thd, Sql_condition::WARN_LEVEL_WARN,
ER_ILLEGAL_HA_CREATE_OPTION,
"InnoDB: DATA DIRECTORY cannot be used"
" for TEMPORARY tables.");
ret = "DATA DIRECTORY";
}
/* Do not allow INDEX_DIRECTORY */
if (create_info->index_file_name) {
push_warning_printf(
thd, Sql_condition::WARN_LEVEL_WARN,
ER_ILLEGAL_HA_CREATE_OPTION,
"InnoDB: INDEX DIRECTORY is not supported");
ret = "INDEX DIRECTORY";
}
return(ret);
}
/*****************************************************************//**
Update create_info. Used in SHOW CREATE TABLE et al. */
UNIV_INTERN
void
ha_innobase::update_create_info(
/*============================*/
HA_CREATE_INFO* create_info) /*!< in/out: create info */
{
if (!(create_info->used_fields & HA_CREATE_USED_AUTO)) {
ha_innobase::info(HA_STATUS_AUTO);
create_info->auto_increment_value = stats.auto_increment_value;
}
/* Update the DATA DIRECTORY name from SYS_DATAFILES. */
dict_get_and_save_data_dir_path(prebuilt->table, false);
if (prebuilt->table->data_dir_path) {
create_info->data_file_name = prebuilt->table->data_dir_path;
}
}
/*****************************************************************//**
Initialize the table FTS stopword list
@return TRUE if success */
UNIV_INTERN
ibool
innobase_fts_load_stopword(
/*=======================*/
dict_table_t* table, /*!< in: Table has the FTS */
trx_t* trx, /*!< in: transaction */
THD* thd) /*!< in: current thread */
{
return(fts_load_stopword(table, trx,
innobase_server_stopword_table,
THDVAR(thd, ft_user_stopword_table),
THDVAR(thd, ft_enable_stopword), FALSE));
}
/*****************************************************************//**
Parses the table name into normal name and either temp path or remote path
if needed.
@return 0 if successful, otherwise, error number */
UNIV_INTERN
int
ha_innobase::parse_table_name(
/*==========================*/
const char* name, /*!< in/out: table name provided*/
HA_CREATE_INFO* create_info, /*!< in: more information of the
created table, contains also the
create statement string */
ulint flags, /*!< in: flags*/
ulint flags2, /*!< in: flags2*/
char* norm_name, /*!< out: normalized table name */
char* temp_path, /*!< out: absolute path of table */
char* remote_path) /*!< out: remote path of table */
{
THD* thd = ha_thd();
bool use_tablespace = flags2 & DICT_TF2_USE_TABLESPACE;
DBUG_ENTER("ha_innobase::parse_table_name");
#ifdef __WIN__
/* Names passed in from server are in two formats:
1. <database_name>/<table_name>: for normal table creation
2. full path: for temp table creation, or DATA DIRECTORY.
When srv_file_per_table is on and mysqld_embedded is off,
check for full path pattern, i.e.
X:\dir\..., X is a driver letter, or
\\dir1\dir2\..., UNC path
returns error if it is in full path format, but not creating a temp.
table. Currently InnoDB does not support symbolic link on Windows. */
if (use_tablespace
&& !mysqld_embedded
&& !(create_info->options & HA_LEX_CREATE_TMP_TABLE)) {
if ((name[1] == ':')
|| (name[0] == '\\' && name[1] == '\\')) {
sql_print_error("Cannot create table %s\n", name);
DBUG_RETURN(HA_ERR_GENERIC);
}
}
#endif
normalize_table_name(norm_name, name);
temp_path[0] = '\0';
remote_path[0] = '\0';
/* A full path is used for TEMPORARY TABLE and DATA DIRECTORY.
In the case of;
CREATE TEMPORARY TABLE ... DATA DIRECTORY={path} ... ;
We ignore the DATA DIRECTORY. */
if (create_info->options & HA_LEX_CREATE_TMP_TABLE) {
strncpy(temp_path, name, FN_REFLEN - 1);
}
if (create_info->data_file_name) {
bool ignore = false;
/* Use DATA DIRECTORY only with file-per-table. */
if (!use_tablespace) {
push_warning(
thd, Sql_condition::WARN_LEVEL_WARN,
ER_ILLEGAL_HA_CREATE_OPTION,
"InnoDB: DATA DIRECTORY requires"
" innodb_file_per_table.");
ignore = true;
}
/* Do not use DATA DIRECTORY with TEMPORARY TABLE. */
if (create_info->options & HA_LEX_CREATE_TMP_TABLE) {
push_warning(
thd, Sql_condition::WARN_LEVEL_WARN,
ER_ILLEGAL_HA_CREATE_OPTION,
"InnoDB: DATA DIRECTORY cannot be"
" used for TEMPORARY tables.");
ignore = true;
}
if (ignore) {
push_warning_printf(
thd, Sql_condition::WARN_LEVEL_WARN,
WARN_OPTION_IGNORED,
ER_DEFAULT(WARN_OPTION_IGNORED),
"DATA DIRECTORY");
} else {
strncpy(remote_path, create_info->data_file_name,
FN_REFLEN - 1);
}
}
if (create_info->index_file_name) {
push_warning_printf(
thd, Sql_condition::WARN_LEVEL_WARN,
WARN_OPTION_IGNORED,
ER_DEFAULT(WARN_OPTION_IGNORED),
"INDEX DIRECTORY");
}
DBUG_RETURN(0);
}
/*****************************************************************//**
Determines InnoDB table flags.
@retval true if successful, false if error */
UNIV_INTERN
bool
innobase_table_flags(
/*=================*/
const TABLE* form, /*!< in: table */
const HA_CREATE_INFO* create_info, /*!< in: information
on table columns and indexes */
THD* thd, /*!< in: connection */
bool use_tablespace, /*!< in: whether to create
outside system tablespace */
ulint* flags, /*!< out: DICT_TF flags */
ulint* flags2) /*!< out: DICT_TF2 flags */
{
DBUG_ENTER("innobase_table_flags");
const char* fts_doc_id_index_bad = NULL;
bool zip_allowed = true;
ulint zip_ssize = 0;
enum row_type row_format;
rec_format_t innodb_row_format = REC_FORMAT_COMPACT;
bool use_data_dir;
/* Cache the value of innodb_file_format, in case it is
modified by another thread while the table is being created. */
const ulint file_format_allowed = srv_file_format;
*flags = 0;
*flags2 = 0;
/* Check if there are any FTS indexes defined on this table. */
for (uint i = 0; i < form->s->keys; i++) {
const KEY* key = &form->key_info[i];
if (key->flags & HA_FULLTEXT) {
*flags2 |= DICT_TF2_FTS;
/* We don't support FTS indexes in temporary
tables. */
if (create_info->options & HA_LEX_CREATE_TMP_TABLE) {
my_error(ER_INNODB_NO_FT_TEMP_TABLE, MYF(0));
DBUG_RETURN(false);
}
if (key->flags & HA_USES_PARSER) {
my_error(ER_INNODB_NO_FT_USES_PARSER, MYF(0));
DBUG_RETURN(false);
}
if (fts_doc_id_index_bad) {
goto index_bad;
}
}
if (innobase_strcasecmp(key->name, FTS_DOC_ID_INDEX_NAME)) {
continue;
}
/* Do a pre-check on FTS DOC ID index */
if (!(key->flags & HA_NOSAME)
|| strcmp(key->name, FTS_DOC_ID_INDEX_NAME)
|| strcmp(key->key_part[0].field->field_name,
FTS_DOC_ID_COL_NAME)) {
fts_doc_id_index_bad = key->name;
}
if (fts_doc_id_index_bad && (*flags2 & DICT_TF2_FTS)) {
index_bad:
my_error(ER_INNODB_FT_WRONG_DOCID_INDEX, MYF(0),
fts_doc_id_index_bad);
DBUG_RETURN(false);
}
}
if (create_info->key_block_size) {
/* The requested compressed page size (key_block_size)
is given in kilobytes. If it is a valid number, store
that value as the number of log2 shifts from 512 in
zip_ssize. Zero means it is not compressed. */
ulint zssize; /* Zip Shift Size */
ulint kbsize; /* Key Block Size */
for (zssize = kbsize = 1;
zssize <= ut_min(UNIV_PAGE_SSIZE_MAX,
PAGE_ZIP_SSIZE_MAX);
zssize++, kbsize <<= 1) {
if (kbsize == create_info->key_block_size) {
zip_ssize = zssize;
break;
}
}
/* Make sure compressed row format is allowed. */
if (!use_tablespace) {
push_warning(
thd, Sql_condition::WARN_LEVEL_WARN,
ER_ILLEGAL_HA_CREATE_OPTION,
"InnoDB: KEY_BLOCK_SIZE requires"
" innodb_file_per_table.");
zip_allowed = FALSE;
}
if (file_format_allowed < UNIV_FORMAT_B) {
push_warning(
thd, Sql_condition::WARN_LEVEL_WARN,
ER_ILLEGAL_HA_CREATE_OPTION,
"InnoDB: KEY_BLOCK_SIZE requires"
" innodb_file_format > Antelope.");
zip_allowed = FALSE;
}
if (!zip_allowed
|| zssize > ut_min(UNIV_PAGE_SSIZE_MAX,
PAGE_ZIP_SSIZE_MAX)) {
push_warning_printf(
thd, Sql_condition::WARN_LEVEL_WARN,
ER_ILLEGAL_HA_CREATE_OPTION,
"InnoDB: ignoring KEY_BLOCK_SIZE=%lu.",
create_info->key_block_size);
}
}
row_format = form->s->row_type;
if (zip_ssize && zip_allowed) {
/* if ROW_FORMAT is set to default,
automatically change it to COMPRESSED.*/
if (row_format == ROW_TYPE_DEFAULT) {
row_format = ROW_TYPE_COMPRESSED;
} else if (row_format != ROW_TYPE_COMPRESSED) {
/* ROW_FORMAT other than COMPRESSED
ignores KEY_BLOCK_SIZE. It does not
make sense to reject conflicting
KEY_BLOCK_SIZE and ROW_FORMAT, because
such combinations can be obtained
with ALTER TABLE anyway. */
push_warning_printf(
thd, Sql_condition::WARN_LEVEL_WARN,
ER_ILLEGAL_HA_CREATE_OPTION,
"InnoDB: ignoring KEY_BLOCK_SIZE=%lu"
" unless ROW_FORMAT=COMPRESSED.",
create_info->key_block_size);
zip_allowed = FALSE;
}
} else {
/* zip_ssize == 0 means no KEY_BLOCK_SIZE.*/
if (row_format == ROW_TYPE_COMPRESSED && zip_allowed) {
/* ROW_FORMAT=COMPRESSED without KEY_BLOCK_SIZE
implies half the maximum KEY_BLOCK_SIZE(*1k) or
UNIV_PAGE_SIZE, whichever is less. */
zip_ssize = ut_min(UNIV_PAGE_SSIZE_MAX,
PAGE_ZIP_SSIZE_MAX) - 1;
}
}
/* Validate the row format. Correct it if necessary */
switch (row_format) {
case ROW_TYPE_REDUNDANT:
innodb_row_format = REC_FORMAT_REDUNDANT;
break;
case ROW_TYPE_COMPRESSED:
case ROW_TYPE_DYNAMIC:
if (!use_tablespace) {
push_warning_printf(
thd, Sql_condition::WARN_LEVEL_WARN,
ER_ILLEGAL_HA_CREATE_OPTION,
"InnoDB: ROW_FORMAT=%s requires"
" innodb_file_per_table.",
get_row_format_name(row_format));
} else if (file_format_allowed == UNIV_FORMAT_A) {
push_warning_printf(
thd, Sql_condition::WARN_LEVEL_WARN,
ER_ILLEGAL_HA_CREATE_OPTION,
"InnoDB: ROW_FORMAT=%s requires"
" innodb_file_format > Antelope.",
get_row_format_name(row_format));
} else {
innodb_row_format = (row_format == ROW_TYPE_DYNAMIC
? REC_FORMAT_DYNAMIC
: REC_FORMAT_COMPRESSED);
break;
}
zip_allowed = FALSE;
/* fall through to set row_format = COMPACT */
case ROW_TYPE_NOT_USED:
case ROW_TYPE_FIXED:
case ROW_TYPE_PAGE:
push_warning(
thd, Sql_condition::WARN_LEVEL_WARN,
ER_ILLEGAL_HA_CREATE_OPTION,
"InnoDB: assuming ROW_FORMAT=COMPACT.");
case ROW_TYPE_DEFAULT:
/* If we fell through, set row format to Compact. */
row_format = ROW_TYPE_COMPACT;
case ROW_TYPE_COMPACT:
break;
}
/* Set the table flags */
if (!zip_allowed) {
zip_ssize = 0;
}
use_data_dir = use_tablespace
&& ((create_info->data_file_name != NULL)
&& !(create_info->options & HA_LEX_CREATE_TMP_TABLE));
dict_tf_set(flags, innodb_row_format, zip_ssize, use_data_dir);
if (create_info->options & HA_LEX_CREATE_TMP_TABLE) {
*flags2 |= DICT_TF2_TEMPORARY;
}
if (use_tablespace) {
*flags2 |= DICT_TF2_USE_TABLESPACE;
}
/* Set the flags2 when create table or alter tables */
*flags2 |= DICT_TF2_FTS_AUX_HEX_NAME;
DBUG_EXECUTE_IF("innodb_test_wrong_fts_aux_table_name",
*flags2 &= ~DICT_TF2_FTS_AUX_HEX_NAME;);
DBUG_RETURN(true);
}
/*****************************************************************//**
Creates a new table to an InnoDB database.
@return error number */
UNIV_INTERN
int
ha_innobase::create(
/*================*/
const char* name, /*!< in: table name */
TABLE* form, /*!< in: information on table
columns and indexes */
HA_CREATE_INFO* create_info) /*!< in: more information of the
created table, contains also the
create statement string */
{
int error;
trx_t* parent_trx;
trx_t* trx;
int primary_key_no;
uint i;
char norm_name[FN_REFLEN]; /* {database}/{tablename} */
char temp_path[FN_REFLEN]; /* absolute path of temp frm */
char remote_path[FN_REFLEN]; /* absolute path of table */
THD* thd = ha_thd();
ib_int64_t auto_inc_value;
/* Cache the global variable "srv_file_per_table" to a local
variable before using it. Note that "srv_file_per_table"
is not under dict_sys mutex protection, and could be changed
while creating the table. So we read the current value here
and make all further decisions based on this. */
bool use_tablespace = srv_file_per_table;
/* Zip Shift Size - log2 - 9 of compressed page size,
zero for uncompressed */
ulint flags;
ulint flags2;
dict_table_t* innobase_table = NULL;
const char* stmt;
size_t stmt_len;
DBUG_ENTER("ha_innobase::create");
DBUG_ASSERT(thd != NULL);
DBUG_ASSERT(create_info != NULL);
if (form->s->fields > REC_MAX_N_USER_FIELDS) {
DBUG_RETURN(HA_ERR_TOO_MANY_FIELDS);
} else if (high_level_read_only) {
DBUG_RETURN(HA_ERR_INNODB_READ_ONLY);
}
/* Create the table definition in InnoDB */
/* Validate create options if innodb_strict_mode is set. */
if (create_options_are_invalid(
thd, form, create_info, use_tablespace)) {
DBUG_RETURN(HA_WRONG_CREATE_OPTION);
}
if (!innobase_table_flags(form, create_info,
thd, use_tablespace,
&flags, &flags2)) {
DBUG_RETURN(-1);
}
error = parse_table_name(name, create_info, flags, flags2,
norm_name, temp_path, remote_path);
if (error) {
DBUG_RETURN(error);
}
/* Look for a primary key */
primary_key_no = (form->s->primary_key != MAX_KEY ?
(int) form->s->primary_key :
-1);
/* Our function innobase_get_mysql_key_number_for_index assumes
the primary key is always number 0, if it exists */
ut_a(primary_key_no == -1 || primary_key_no == 0);
/* Check for name conflicts (with reserved name) for
any user indices to be created. */
if (innobase_index_name_is_reserved(thd, form->key_info,
form->s->keys)) {
DBUG_RETURN(-1);
}
if (row_is_magic_monitor_table(norm_name)) {
push_warning_printf(thd,
Sql_condition::WARN_LEVEL_WARN,
HA_ERR_WRONG_COMMAND,
"Using the table name %s to enable "
"diagnostic output is deprecated "
"and may be removed in future releases. "
"Use INFORMATION_SCHEMA or "
"PERFORMANCE_SCHEMA tables or "
"SET GLOBAL innodb_status_output=ON.",
dict_remove_db_name(norm_name));
/* Limit innodb monitor access to users with PROCESS privilege.
See http://bugs.mysql.com/32710 why we chose PROCESS. */
if (check_global_access(thd, PROCESS_ACL)) {
DBUG_RETURN(HA_ERR_GENERIC);
}
}
/* Get the transaction associated with the current thd, or create one
if not yet created */
parent_trx = check_trx_exists(thd);
/* In case MySQL calls this in the middle of a SELECT query, release
possible adaptive hash latch to avoid deadlocks of threads */
trx_search_latch_release_if_reserved(parent_trx);
trx = innobase_trx_allocate(thd);
/* Latch the InnoDB data dictionary exclusively so that no deadlocks
or lock waits can happen in it during a table create operation.
Drop table etc. do this latching in row0mysql.cc. */
row_mysql_lock_data_dictionary(trx);
error = create_table_def(trx, form, norm_name, temp_path,
remote_path, flags, flags2);
if (error) {
goto cleanup;
}
/* Create the keys */
if (form->s->keys == 0 || primary_key_no == -1) {
/* Create an index which is used as the clustered index;
order the rows by their row id which is internally generated
by InnoDB */
error = create_clustered_index_when_no_primary(
trx, flags, norm_name);
if (error) {
goto cleanup;
}
}
if (primary_key_no != -1) {
/* In InnoDB the clustered index must always be created
first */
if ((error = create_index(trx, form, flags, norm_name,
(uint) primary_key_no))) {
goto cleanup;
}
}
/* Create the ancillary tables that are common to all FTS indexes on
this table. */
if (flags2 & DICT_TF2_FTS) {
enum fts_doc_id_index_enum ret;
innobase_table = dict_table_open_on_name(
norm_name, TRUE, FALSE, DICT_ERR_IGNORE_NONE);
ut_a(innobase_table);
/* Check whether there already exists FTS_DOC_ID_INDEX */
ret = innobase_fts_check_doc_id_index_in_def(
form->s->keys, form->key_info);
switch (ret) {
case FTS_INCORRECT_DOC_ID_INDEX:
push_warning_printf(thd,
Sql_condition::WARN_LEVEL_WARN,
ER_WRONG_NAME_FOR_INDEX,
" InnoDB: Index name %s is reserved"
" for the unique index on"
" FTS_DOC_ID column for FTS"
" Document ID indexing"
" on table %s. Please check"
" the index definition to"
" make sure it is of correct"
" type\n",
FTS_DOC_ID_INDEX_NAME,
innobase_table->name);
if (innobase_table->fts) {
fts_free(innobase_table);
}
dict_table_close(innobase_table, TRUE, FALSE);
my_error(ER_WRONG_NAME_FOR_INDEX, MYF(0),
FTS_DOC_ID_INDEX_NAME);
error = -1;
goto cleanup;
case FTS_EXIST_DOC_ID_INDEX:
case FTS_NOT_EXIST_DOC_ID_INDEX:
break;
}
dberr_t err = fts_create_common_tables(
trx, innobase_table, norm_name,
(ret == FTS_EXIST_DOC_ID_INDEX));
error = convert_error_code_to_mysql(err, 0, NULL);
dict_table_close(innobase_table, TRUE, FALSE);
if (error) {
goto cleanup;
}
}
for (i = 0; i < form->s->keys; i++) {
if (i != static_cast<uint>(primary_key_no)) {
if ((error = create_index(trx, form, flags,
norm_name, i))) {
goto cleanup;
}
}
}
/* Cache all the FTS indexes on this table in the FTS specific
structure. They are used for FTS indexed column update handling. */
if (flags2 & DICT_TF2_FTS) {
fts_t* fts = innobase_table->fts;
ut_a(fts != NULL);
dict_table_get_all_fts_indexes(innobase_table, fts->indexes);
}
stmt = innobase_get_stmt(thd, &stmt_len);
if (stmt) {
dberr_t err = row_table_add_foreign_constraints(
trx, stmt, stmt_len, norm_name,
create_info->options & HA_LEX_CREATE_TMP_TABLE);
switch (err) {
case DB_PARENT_NO_INDEX:
push_warning_printf(
thd, Sql_condition::WARN_LEVEL_WARN,
HA_ERR_CANNOT_ADD_FOREIGN,
"Create table '%s' with foreign key constraint"
" failed. There is no index in the referenced"
" table where the referenced columns appear"
" as the first columns.\n", norm_name);
break;
case DB_CHILD_NO_INDEX:
push_warning_printf(
thd, Sql_condition::WARN_LEVEL_WARN,
HA_ERR_CANNOT_ADD_FOREIGN,
"Create table '%s' with foreign key constraint"
" failed. There is no index in the referencing"
" table where referencing columns appear"
" as the first columns.\n", norm_name);
break;
default:
break;
}
error = convert_error_code_to_mysql(err, flags, NULL);
if (error) {
goto cleanup;
}
}
innobase_commit_low(trx);
row_mysql_unlock_data_dictionary(trx);
/* Flush the log to reduce probability that the .frm files and
the InnoDB data dictionary get out-of-sync if the user runs
with innodb_flush_log_at_trx_commit = 0 */
log_buffer_flush_to_disk();
innobase_table = dict_table_open_on_name(
norm_name, FALSE, FALSE, DICT_ERR_IGNORE_NONE);
DBUG_ASSERT(innobase_table != 0);
innobase_copy_frm_flags_from_create_info(innobase_table, create_info);
dict_stats_update(innobase_table, DICT_STATS_EMPTY_TABLE);
if (innobase_table) {
/* We update the highest file format in the system table
space, if this table has higher file format setting. */
trx_sys_file_format_max_upgrade(
(const char**) &innobase_file_format_max,
dict_table_get_format(innobase_table));
}
/* Load server stopword into FTS cache */
if (flags2 & DICT_TF2_FTS) {
if (!innobase_fts_load_stopword(innobase_table, NULL, thd)) {
dict_table_close(innobase_table, FALSE, FALSE);
srv_active_wake_master_thread();
trx_free_for_mysql(trx);
DBUG_RETURN(-1);
}
}
/* Note: We can't call update_thd() as prebuilt will not be
setup at this stage and so we use thd. */
/* We need to copy the AUTOINC value from the old table if
this is an ALTER|OPTIMIZE TABLE or CREATE INDEX because CREATE INDEX
does a table copy too. If query was one of :
CREATE TABLE ...AUTO_INCREMENT = x; or
ALTER TABLE...AUTO_INCREMENT = x; or
OPTIMIZE TABLE t; or
CREATE INDEX x on t(...);
Find out a table definition from the dictionary and get
the current value of the auto increment field. Set a new
value to the auto increment field if the value is greater
than the maximum value in the column. */
if (((create_info->used_fields & HA_CREATE_USED_AUTO)
|| thd_sql_command(thd) == SQLCOM_ALTER_TABLE
|| thd_sql_command(thd) == SQLCOM_OPTIMIZE
|| thd_sql_command(thd) == SQLCOM_CREATE_INDEX)
&& create_info->auto_increment_value > 0) {
auto_inc_value = create_info->auto_increment_value;
dict_table_autoinc_lock(innobase_table);
dict_table_autoinc_initialize(innobase_table, auto_inc_value);
dict_table_autoinc_unlock(innobase_table);
}
dict_table_close(innobase_table, FALSE, FALSE);
/* Tell the InnoDB server that there might be work for
utility threads: */
srv_active_wake_master_thread();
trx_free_for_mysql(trx);
DBUG_RETURN(0);
cleanup:
trx_rollback_for_mysql(trx);
row_mysql_unlock_data_dictionary(trx);
trx_free_for_mysql(trx);
DBUG_RETURN(error);
}
/*****************************************************************//**
Discards or imports an InnoDB tablespace.
@return 0 == success, -1 == error */
UNIV_INTERN
int
ha_innobase::discard_or_import_tablespace(
/*======================================*/
my_bool discard) /*!< in: TRUE if discard, else import */
{
dberr_t err;
dict_table_t* dict_table;
DBUG_ENTER("ha_innobase::discard_or_import_tablespace");
ut_a(prebuilt->trx);
ut_a(prebuilt->trx->magic_n == TRX_MAGIC_N);
ut_a(prebuilt->trx == thd_to_trx(ha_thd()));
if (high_level_read_only) {
DBUG_RETURN(HA_ERR_TABLE_READONLY);
}
dict_table = prebuilt->table;
if (dict_table->space == TRX_SYS_SPACE) {
ib_senderrf(
prebuilt->trx->mysql_thd, IB_LOG_LEVEL_ERROR,
ER_TABLE_IN_SYSTEM_TABLESPACE,
table->s->table_name.str);
DBUG_RETURN(HA_ERR_TABLE_NEEDS_UPGRADE);
}
trx_start_if_not_started(prebuilt->trx);
/* In case MySQL calls this in the middle of a SELECT query, release
possible adaptive hash latch to avoid deadlocks of threads. */
trx_search_latch_release_if_reserved(prebuilt->trx);
/* Obtain an exclusive lock on the table. */
err = row_mysql_lock_table(
prebuilt->trx, dict_table, LOCK_X,
discard ? "setting table lock for DISCARD TABLESPACE"
: "setting table lock for IMPORT TABLESPACE");
if (err != DB_SUCCESS) {
/* unable to lock the table: do nothing */
} else if (discard) {
/* Discarding an already discarded tablespace should be an
idempotent operation. Also, if the .ibd file is missing the
user may want to set the DISCARD flag in order to IMPORT
a new tablespace. */
if (dict_table->ibd_file_missing) {
ib_senderrf(
prebuilt->trx->mysql_thd,
IB_LOG_LEVEL_WARN, ER_TABLESPACE_MISSING,
table->s->table_name.str);
}
err = row_discard_tablespace_for_mysql(
dict_table->name, prebuilt->trx);
} else if (!dict_table->ibd_file_missing) {
/* Commit the transaction in order to
release the table lock. */
trx_commit_for_mysql(prebuilt->trx);
ib_senderrf(
prebuilt->trx->mysql_thd, IB_LOG_LEVEL_ERROR,
ER_TABLESPACE_EXISTS, table->s->table_name.str);
DBUG_RETURN(HA_ERR_TABLE_EXIST);
} else {
err = row_import_for_mysql(dict_table, prebuilt);
if (err == DB_SUCCESS) {
if (table->found_next_number_field) {
dict_table_autoinc_lock(dict_table);
innobase_initialize_autoinc();
dict_table_autoinc_unlock(dict_table);
}
info(HA_STATUS_TIME
| HA_STATUS_CONST
| HA_STATUS_VARIABLE
| HA_STATUS_AUTO);
}
}
/* Commit the transaction in order to release the table lock. */
trx_commit_for_mysql(prebuilt->trx);
DBUG_RETURN(convert_error_code_to_mysql(err, dict_table->flags, NULL));
}
/*****************************************************************//**
Deletes all rows of an InnoDB table.
@return error number */
UNIV_INTERN
int
ha_innobase::truncate()
/*===================*/
{
dberr_t err;
int error;
DBUG_ENTER("ha_innobase::truncate");
if (high_level_read_only) {
DBUG_RETURN(HA_ERR_TABLE_READONLY);
}
/* Get the transaction associated with the current thd, or create one
if not yet created, and update prebuilt->trx */
update_thd(ha_thd());
if (!trx_is_started(prebuilt->trx)) {
++prebuilt->trx->will_lock;
}
/* Truncate the table in InnoDB */
err = row_truncate_table_for_mysql(prebuilt->table, prebuilt->trx);
switch (err) {
case DB_TABLESPACE_DELETED:
case DB_TABLESPACE_NOT_FOUND:
ib_senderrf(
prebuilt->trx->mysql_thd, IB_LOG_LEVEL_ERROR,
(err == DB_TABLESPACE_DELETED ?
ER_TABLESPACE_DISCARDED : ER_TABLESPACE_MISSING),
table->s->table_name.str);
table->status = STATUS_NOT_FOUND;
error = HA_ERR_NO_SUCH_TABLE;
break;
default:
error = convert_error_code_to_mysql(
err, prebuilt->table->flags,
prebuilt->trx->mysql_thd);
table->status = STATUS_NOT_FOUND;
break;
}
DBUG_RETURN(error);
}
/*****************************************************************//**
Drops a table from an InnoDB database. Before calling this function,
MySQL calls innobase_commit to commit the transaction of the current user.
Then the current user cannot have locks set on the table. Drop table
operation inside InnoDB will remove all locks any user has on the table
inside InnoDB.
@return error number */
UNIV_INTERN
int
ha_innobase::delete_table(
/*======================*/
const char* name) /*!< in: table name */
{
ulint name_len;
dberr_t err;
trx_t* parent_trx;
trx_t* trx;
THD* thd = ha_thd();
char norm_name[FN_REFLEN];
DBUG_ENTER("ha_innobase::delete_table");
DBUG_EXECUTE_IF(
"test_normalize_table_name_low",
test_normalize_table_name_low();
);
DBUG_EXECUTE_IF(
"test_ut_format_name",
test_ut_format_name();
);
/* Strangely, MySQL passes the table name without the '.frm'
extension, in contrast to ::create */
normalize_table_name(norm_name, name);
if (srv_read_only_mode) {
DBUG_RETURN(HA_ERR_TABLE_READONLY);
} else if (row_is_magic_monitor_table(norm_name)
&& check_global_access(thd, PROCESS_ACL)) {
DBUG_RETURN(HA_ERR_GENERIC);
}
parent_trx = check_trx_exists(thd);
/* In case MySQL calls this in the middle of a SELECT query, release
possible adaptive hash latch to avoid deadlocks of threads */
trx_search_latch_release_if_reserved(parent_trx);
trx = innobase_trx_allocate(thd);
name_len = strlen(name);
ut_a(name_len < 1000);
/* Either the transaction is already flagged as a locking transaction
or it hasn't been started yet. */
ut_a(!trx_is_started(trx) || trx->will_lock > 0);
/* We are doing a DDL operation. */
++trx->will_lock;
trx->ddl = true;
/* Drop the table in InnoDB */
err = row_drop_table_for_mysql(
norm_name, trx, thd_sql_command(thd) == SQLCOM_DROP_DB);
if (err == DB_TABLE_NOT_FOUND
&& innobase_get_lower_case_table_names() == 1) {
char* is_part = NULL;
#ifdef __WIN__
is_part = strstr(norm_name, "#p#");
#else
is_part = strstr(norm_name, "#P#");
#endif /* __WIN__ */
if (is_part) {
char par_case_name[FN_REFLEN];
#ifndef __WIN__
/* Check for the table using lower
case name, including the partition
separator "P" */
strcpy(par_case_name, norm_name);
innobase_casedn_str(par_case_name);
#else
/* On Windows platfrom, check
whether there exists table name in
system table whose name is
not being normalized to lower case */
normalize_table_name_low(
par_case_name, name, FALSE);
#endif
err = row_drop_table_for_mysql(
par_case_name, trx,
thd_sql_command(thd) == SQLCOM_DROP_DB);
}
}
/* Flush the log to reduce probability that the .frm files and
the InnoDB data dictionary get out-of-sync if the user runs
with innodb_flush_log_at_trx_commit = 0 */
log_buffer_flush_to_disk();
innobase_commit_low(trx);
trx_free_for_mysql(trx);
DBUG_RETURN(convert_error_code_to_mysql(err, 0, NULL));
}
/*****************************************************************//**
Removes all tables in the named database inside InnoDB. */
static
void
innobase_drop_database(
/*===================*/
handlerton* hton, /*!< in: handlerton of Innodb */
char* path) /*!< in: database path; inside InnoDB the name
of the last directory in the path is used as
the database name: for example, in
'mysql/data/test' the database name is 'test' */
{
ulint len = 0;
trx_t* trx;
char* ptr;
char* namebuf;
THD* thd = current_thd;
/* Get the transaction associated with the current thd, or create one
if not yet created */
DBUG_ASSERT(hton == innodb_hton_ptr);
if (srv_read_only_mode) {
return;
}
/* In the Windows plugin, thd = current_thd is always NULL */
if (thd) {
trx_t* parent_trx = check_trx_exists(thd);
/* In case MySQL calls this in the middle of a SELECT
query, release possible adaptive hash latch to avoid
deadlocks of threads */
trx_search_latch_release_if_reserved(parent_trx);
}
ptr = strend(path) - 2;
while (ptr >= path && *ptr != '\\' && *ptr != '/') {
ptr--;
len++;
}
ptr++;
namebuf = (char*) my_malloc((uint) len + 2, MYF(0));
memcpy(namebuf, ptr, len);
namebuf[len] = '/';
namebuf[len + 1] = '\0';
#ifdef __WIN__
innobase_casedn_str(namebuf);
#endif
trx = innobase_trx_allocate(thd);
/* Either the transaction is already flagged as a locking transaction
or it hasn't been started yet. */
ut_a(!trx_is_started(trx) || trx->will_lock > 0);
/* We are doing a DDL operation. */
++trx->will_lock;
row_drop_database_for_mysql(namebuf, trx);
my_free(namebuf);
/* Flush the log to reduce probability that the .frm files and
the InnoDB data dictionary get out-of-sync if the user runs
with innodb_flush_log_at_trx_commit = 0 */
log_buffer_flush_to_disk();
innobase_commit_low(trx);
trx_free_for_mysql(trx);
}
/*********************************************************************//**
Renames an InnoDB table.
@return DB_SUCCESS or error code */
static __attribute__((nonnull, warn_unused_result))
dberr_t
innobase_rename_table(
/*==================*/
trx_t* trx, /*!< in: transaction */
const char* from, /*!< in: old name of the table */
const char* to) /*!< in: new name of the table */
{
dberr_t error;
char norm_to[FN_REFLEN];
char norm_from[FN_REFLEN];
DBUG_ENTER("innobase_rename_table");
DBUG_ASSERT(trx_get_dict_operation(trx) == TRX_DICT_OP_INDEX);
ut_ad(!srv_read_only_mode);
normalize_table_name(norm_to, to);
normalize_table_name(norm_from, from);
DEBUG_SYNC_C("innodb_rename_table_ready");
trx_start_if_not_started(trx);
/* Serialize data dictionary operations with dictionary mutex:
no deadlocks can occur then in these operations. */
row_mysql_lock_data_dictionary(trx);
/* Transaction must be flagged as a locking transaction or it hasn't
been started yet. */
ut_a(trx->will_lock > 0);
error = row_rename_table_for_mysql(
norm_from, norm_to, trx, TRUE);
if (error != DB_SUCCESS) {
if (error == DB_TABLE_NOT_FOUND
&& innobase_get_lower_case_table_names() == 1) {
char* is_part = NULL;
#ifdef __WIN__
is_part = strstr(norm_from, "#p#");
#else
is_part = strstr(norm_from, "#P#");
#endif /* __WIN__ */
if (is_part) {
char par_case_name[FN_REFLEN];
#ifndef __WIN__
/* Check for the table using lower
case name, including the partition
separator "P" */
strcpy(par_case_name, norm_from);
innobase_casedn_str(par_case_name);
#else
/* On Windows platfrom, check
whether there exists table name in
system table whose name is
not being normalized to lower case */
normalize_table_name_low(
par_case_name, from, FALSE);
#endif
trx_start_if_not_started(trx);
error = row_rename_table_for_mysql(
par_case_name, norm_to, trx, TRUE);
}
}
if (error == DB_SUCCESS) {
#ifndef __WIN__
sql_print_warning("Rename partition table %s "
"succeeds after converting to lower "
"case. The table may have "
"been moved from a case "
"in-sensitive file system.\n",
norm_from);
#else
sql_print_warning("Rename partition table %s "
"succeeds after skipping the step to "
"lower case the table name. "
"The table may have been "
"moved from a case sensitive "
"file system.\n",
norm_from);
#endif /* __WIN__ */
}
}
row_mysql_unlock_data_dictionary(trx);
/* Flush the log to reduce probability that the .frm
files and the InnoDB data dictionary get out-of-sync
if the user runs with innodb_flush_log_at_trx_commit = 0 */
log_buffer_flush_to_disk();
DBUG_RETURN(error);
}
/*********************************************************************//**
Renames an InnoDB table.
@return 0 or error code */
UNIV_INTERN
int
ha_innobase::rename_table(
/*======================*/
const char* from, /*!< in: old name of the table */
const char* to) /*!< in: new name of the table */
{
trx_t* trx;
dberr_t error;
trx_t* parent_trx;
THD* thd = ha_thd();
DBUG_ENTER("ha_innobase::rename_table");
if (high_level_read_only) {
ib_senderrf(thd, IB_LOG_LEVEL_WARN, ER_READ_ONLY_MODE);
DBUG_RETURN(HA_ERR_TABLE_READONLY);
}
/* Get the transaction associated with the current thd, or create one
if not yet created */
parent_trx = check_trx_exists(thd);
/* In case MySQL calls this in the middle of a SELECT query, release
possible adaptive hash latch to avoid deadlocks of threads */
trx_search_latch_release_if_reserved(parent_trx);
trx = innobase_trx_allocate(thd);
/* We are doing a DDL operation. */
++trx->will_lock;
trx_set_dict_operation(trx, TRX_DICT_OP_INDEX);
error = innobase_rename_table(trx, from, to);
DEBUG_SYNC(thd, "after_innobase_rename_table");
innobase_commit_low(trx);
trx_free_for_mysql(trx);
if (error == DB_SUCCESS) {
char norm_from[MAX_FULL_NAME_LEN];
char norm_to[MAX_FULL_NAME_LEN];
char errstr[512];
dberr_t ret;
normalize_table_name(norm_from, from);
normalize_table_name(norm_to, to);
ret = dict_stats_rename_table(norm_from, norm_to,
errstr, sizeof(errstr));
if (ret != DB_SUCCESS) {
ut_print_timestamp(stderr);
fprintf(stderr, " InnoDB: %s\n", errstr);
push_warning(thd, Sql_condition::WARN_LEVEL_WARN,
ER_LOCK_WAIT_TIMEOUT, errstr);
}
}
/* Add a special case to handle the Duplicated Key error
and return DB_ERROR instead.
This is to avoid a possible SIGSEGV error from mysql error
handling code. Currently, mysql handles the Duplicated Key
error by re-entering the storage layer and getting dup key
info by calling get_dup_key(). This operation requires a valid
table handle ('row_prebuilt_t' structure) which could no
longer be available in the error handling stage. The suggested
solution is to report a 'table exists' error message (since
the dup key error here is due to an existing table whose name
is the one we are trying to rename to) and return the generic
error code. */
if (error == DB_DUPLICATE_KEY) {
my_error(ER_TABLE_EXISTS_ERROR, MYF(0), to);
error = DB_ERROR;
}
DBUG_RETURN(convert_error_code_to_mysql(error, 0, NULL));
}
/*********************************************************************//**
Estimates the number of index records in a range.
@return estimated number of rows */
UNIV_INTERN
ha_rows
ha_innobase::records_in_range(
/*==========================*/
uint keynr, /*!< in: index number */
key_range *min_key, /*!< in: start key value of the
range, may also be 0 */
key_range *max_key) /*!< in: range end key val, may
also be 0 */
{
KEY* key;
dict_index_t* index;
dtuple_t* range_start;
dtuple_t* range_end;
ib_int64_t n_rows;
ulint mode1;
ulint mode2;
mem_heap_t* heap;
DBUG_ENTER("records_in_range");
ut_a(prebuilt->trx == thd_to_trx(ha_thd()));
prebuilt->trx->op_info = (char*)"estimating records in index range";
/* In case MySQL calls this in the middle of a SELECT query, release
possible adaptive hash latch to avoid deadlocks of threads */
trx_search_latch_release_if_reserved(prebuilt->trx);
active_index = keynr;
key = table->key_info + active_index;
index = innobase_get_index(keynr);
/* There exists possibility of not being able to find requested
index due to inconsistency between MySQL and InoDB dictionary info.
Necessary message should have been printed in innobase_get_index() */
if (dict_table_is_discarded(prebuilt->table)) {
n_rows = HA_POS_ERROR;
goto func_exit;
}
if (UNIV_UNLIKELY(!index)) {
n_rows = HA_POS_ERROR;
goto func_exit;
}
if (dict_index_is_corrupted(index)) {
n_rows = HA_ERR_INDEX_CORRUPT;
goto func_exit;
}
if (UNIV_UNLIKELY(!row_merge_is_index_usable(prebuilt->trx, index))) {
n_rows = HA_ERR_TABLE_DEF_CHANGED;
goto func_exit;
}
heap = mem_heap_create(2 * (key->actual_key_parts * sizeof(dfield_t)
+ sizeof(dtuple_t)));
range_start = dtuple_create(heap, key->actual_key_parts);
dict_index_copy_types(range_start, index, key->actual_key_parts);
range_end = dtuple_create(heap, key->actual_key_parts);
dict_index_copy_types(range_end, index, key->actual_key_parts);
row_sel_convert_mysql_key_to_innobase(
range_start,
prebuilt->srch_key_val1,
prebuilt->srch_key_val_len,
index,
(byte*) (min_key ? min_key->key :
(const uchar*) 0),
(ulint) (min_key ? min_key->length : 0),
prebuilt->trx);
DBUG_ASSERT(min_key
? range_start->n_fields > 0
: range_start->n_fields == 0);
row_sel_convert_mysql_key_to_innobase(
range_end,
prebuilt->srch_key_val2,
prebuilt->srch_key_val_len,
index,
(byte*) (max_key ? max_key->key :
(const uchar*) 0),
(ulint) (max_key ? max_key->length : 0),
prebuilt->trx);
DBUG_ASSERT(max_key
? range_end->n_fields > 0
: range_end->n_fields == 0);
mode1 = convert_search_mode_to_innobase(min_key ? min_key->flag :
HA_READ_KEY_EXACT);
mode2 = convert_search_mode_to_innobase(max_key ? max_key->flag :
HA_READ_KEY_EXACT);
if (mode1 != PAGE_CUR_UNSUPP && mode2 != PAGE_CUR_UNSUPP) {
n_rows = btr_estimate_n_rows_in_range(index, range_start,
mode1, range_end,
mode2);
} else {
n_rows = HA_POS_ERROR;
}
mem_heap_free(heap);
func_exit:
prebuilt->trx->op_info = (char*)"";
/* The MySQL optimizer seems to believe an estimate of 0 rows is
always accurate and may return the result 'Empty set' based on that.
The accuracy is not guaranteed, and even if it were, for a locking
read we should anyway perform the search to set the next-key lock.
Add 1 to the value to make sure MySQL does not make the assumption! */
if (n_rows == 0) {
n_rows = 1;
}
DBUG_RETURN((ha_rows) n_rows);
}
/*********************************************************************//**
Gives an UPPER BOUND to the number of rows in a table. This is used in
filesort.cc.
@return upper bound of rows */
UNIV_INTERN
ha_rows
ha_innobase::estimate_rows_upper_bound()
/*====================================*/
{
const dict_index_t* index;
ulonglong estimate;
ulonglong local_data_file_length;
ulint stat_n_leaf_pages;
DBUG_ENTER("estimate_rows_upper_bound");
/* We do not know if MySQL can call this function before calling
external_lock(). To be safe, update the thd of the current table
handle. */
update_thd(ha_thd());
prebuilt->trx->op_info = "calculating upper bound for table rows";
/* In case MySQL calls this in the middle of a SELECT query, release
possible adaptive hash latch to avoid deadlocks of threads */
trx_search_latch_release_if_reserved(prebuilt->trx);
index = dict_table_get_first_index(prebuilt->table);
stat_n_leaf_pages = index->stat_n_leaf_pages;
ut_a(stat_n_leaf_pages > 0);
local_data_file_length =
((ulonglong) stat_n_leaf_pages) * UNIV_PAGE_SIZE;
/* Calculate a minimum length for a clustered index record and from
that an upper bound for the number of rows. Since we only calculate
new statistics in row0mysql.cc when a table has grown by a threshold
factor, we must add a safety factor 2 in front of the formula below. */
estimate = 2 * local_data_file_length
/ dict_index_calc_min_rec_len(index);
prebuilt->trx->op_info = "";
/* Set num_rows less than MERGEBUFF to simulate the case where we do
not have enough space to merge the externally sorted file blocks. */
DBUG_EXECUTE_IF("set_num_rows_lt_MERGEBUFF",
estimate = 2;
DBUG_SET("-d,set_num_rows_lt_MERGEBUFF");
);
DBUG_RETURN((ha_rows) estimate);
}
/*********************************************************************//**
How many seeks it will take to read through the table. This is to be
comparable to the number returned by records_in_range so that we can
decide if we should scan the table or use keys.
@return estimated time measured in disk seeks */
UNIV_INTERN
double
ha_innobase::scan_time()
/*====================*/
{
/* Since MySQL seems to favor table scans too much over index
searches, we pretend that a sequential read takes the same time
as a random disk read, that is, we do not divide the following
by 10, which would be physically realistic. */
/* The locking below is disabled for performance reasons. Without
it we could end up returning uninitialized value to the caller,
which in the worst case could make some query plan go bogus or
issue a Valgrind warning. */
#if 0
/* avoid potential lock order violation with dict_table_stats_lock()
below */
update_thd(ha_thd());
trx_search_latch_release_if_reserved(prebuilt->trx);
#endif
ulint stat_clustered_index_size;
#if 0
dict_table_stats_lock(prebuilt->table, RW_S_LATCH);
#endif
ut_a(prebuilt->table->stat_initialized);
stat_clustered_index_size = prebuilt->table->stat_clustered_index_size;
#if 0
dict_table_stats_unlock(prebuilt->table, RW_S_LATCH);
#endif
return((double) stat_clustered_index_size);
}
/******************************************************************//**
Calculate the time it takes to read a set of ranges through an index
This enables us to optimise reads for clustered indexes.
@return estimated time measured in disk seeks */
UNIV_INTERN
double
ha_innobase::read_time(
/*===================*/
uint index, /*!< in: key number */
uint ranges, /*!< in: how many ranges */
ha_rows rows) /*!< in: estimated number of rows in the ranges */
{
ha_rows total_rows;
double time_for_scan;
if (index != table->s->primary_key) {
/* Not clustered */
return(handler::read_time(index, ranges, rows));
}
if (rows <= 2) {
return((double) rows);
}
/* Assume that the read time is proportional to the scan time for all
rows + at most one seek per range. */
time_for_scan = scan_time();
if ((total_rows = estimate_rows_upper_bound()) < rows) {
return(time_for_scan);
}
return(ranges + (double) rows / (double) total_rows * time_for_scan);
}
/******************************************************************//**
Return the size of the InnoDB memory buffer. */
UNIV_INTERN
longlong
ha_innobase::get_memory_buffer_size() const
/*=======================================*/
{
return(innobase_buffer_pool_size);
}
/*********************************************************************//**
Calculates the key number used inside MySQL for an Innobase index. We will
first check the "index translation table" for a match of the index to get
the index number. If there does not exist an "index translation table",
or not able to find the index in the translation table, then we will fall back
to the traditional way of looping through dict_index_t list to find a
match. In this case, we have to take into account if we generated a
default clustered index for the table
@return the key number used inside MySQL */
static
int
innobase_get_mysql_key_number_for_index(
/*====================================*/
INNOBASE_SHARE* share, /*!< in: share structure for index
translation table. */
const TABLE* table, /*!< in: table in MySQL data
dictionary */
dict_table_t* ib_table,/*!< in: table in Innodb data
dictionary */
const dict_index_t* index) /*!< in: index */
{
const dict_index_t* ind;
unsigned int i;
ut_a(index);
/* If index does not belong to the table object of share structure
(ib_table comes from the share structure) search the index->table
object instead */
if (index->table != ib_table) {
i = 0;
ind = dict_table_get_first_index(index->table);
while (index != ind) {
ind = dict_table_get_next_index(ind);
i++;
}
if (row_table_got_default_clust_index(index->table)) {
ut_a(i > 0);
i--;
}
return(i);
}
/* If index translation table exists, we will first check
the index through index translation table for a match. */
if (share->idx_trans_tbl.index_mapping) {
for (i = 0; i < share->idx_trans_tbl.index_count; i++) {
if (share->idx_trans_tbl.index_mapping[i] == index) {
return(i);
}
}
/* Print an error message if we cannot find the index
in the "index translation table". */
if (*index->name != TEMP_INDEX_PREFIX) {
sql_print_error("Cannot find index %s in InnoDB index "
"translation table.", index->name);
}
}
/* If we do not have an "index translation table", or not able
to find the index in the translation table, we'll directly find
matching index with information from mysql TABLE structure and
InnoDB dict_index_t list */
for (i = 0; i < table->s->keys; i++) {
ind = dict_table_get_index_on_name(
ib_table, table->key_info[i].name);
if (index == ind) {
return(i);
}
}
/* Loop through each index of the table and lock them */
for (ind = dict_table_get_first_index(ib_table);
ind != NULL;
ind = dict_table_get_next_index(ind)) {
if (index == ind) {
/* Temp index is internal to InnoDB, that is
not present in the MySQL index list, so no
need to print such mismatch warning. */
if (*(index->name) != TEMP_INDEX_PREFIX) {
sql_print_warning(
"Find index %s in InnoDB index list "
"but not its MySQL index number "
"It could be an InnoDB internal index.",
index->name);
}
return(-1);
}
}
ut_error;
return(-1);
}
/*********************************************************************//**
Calculate Record Per Key value. Need to exclude the NULL value if
innodb_stats_method is set to "nulls_ignored"
@return estimated record per key value */
static
ha_rows
innodb_rec_per_key(
/*===============*/
dict_index_t* index, /*!< in: dict_index_t structure */
ulint i, /*!< in: the column we are
calculating rec per key */
ha_rows records) /*!< in: estimated total records */
{
ha_rows rec_per_key;
ib_uint64_t n_diff;
ut_a(index->table->stat_initialized);
ut_ad(i < dict_index_get_n_unique(index));
n_diff = index->stat_n_diff_key_vals[i];
if (n_diff == 0) {
rec_per_key = records;
} else if (srv_innodb_stats_method == SRV_STATS_NULLS_IGNORED) {
ib_uint64_t n_null;
ib_uint64_t n_non_null;
n_non_null = index->stat_n_non_null_key_vals[i];
/* In theory, index->stat_n_non_null_key_vals[i]
should always be less than the number of records.
Since this is statistics value, the value could
have slight discrepancy. But we will make sure
the number of null values is not a negative number. */
if (records < n_non_null) {
n_null = 0;
} else {
n_null = records - n_non_null;
}
/* If the number of NULL values is the same as or
large than that of the distinct values, we could
consider that the table consists mostly of NULL value.
Set rec_per_key to 1. */
if (n_diff <= n_null) {
rec_per_key = 1;
} else {
/* Need to exclude rows with NULL values from
rec_per_key calculation */
rec_per_key = (ha_rows)
((records - n_null) / (n_diff - n_null));
}
} else {
DEBUG_SYNC_C("after_checking_for_0");
rec_per_key = (ha_rows) (records / n_diff);
}
return(rec_per_key);
}
/*********************************************************************//**
Returns statistics information of the table to the MySQL interpreter,
in various fields of the handle object.
@return HA_ERR_* error code or 0 */
UNIV_INTERN
int
ha_innobase::info_low(
/*==================*/
uint flag, /*!< in: what information is requested */
bool is_analyze)
{
dict_table_t* ib_table;
ha_rows rec_per_key;
ib_uint64_t n_rows;
os_file_stat_t stat_info;
DBUG_ENTER("info");
/* If we are forcing recovery at a high level, we will suppress
statistics calculation on tables, because that may crash the
server if an index is badly corrupted. */
/* We do not know if MySQL can call this function before calling
external_lock(). To be safe, update the thd of the current table
handle. */
update_thd(ha_thd());
/* In case MySQL calls this in the middle of a SELECT query, release
possible adaptive hash latch to avoid deadlocks of threads */
prebuilt->trx->op_info = (char*)"returning various info to MySQL";
trx_search_latch_release_if_reserved(prebuilt->trx);
ib_table = prebuilt->table;
DBUG_ASSERT(ib_table->n_ref_count > 0);
if (flag & HA_STATUS_TIME) {
if (is_analyze || innobase_stats_on_metadata) {
dict_stats_upd_option_t opt;
dberr_t ret;
prebuilt->trx->op_info = "updating table statistics";
if (dict_stats_is_persistent_enabled(ib_table)) {
if (is_analyze) {
opt = DICT_STATS_RECALC_PERSISTENT;
} else {
/* This is e.g. 'SHOW INDEXES', fetch
the persistent stats from disk. */
opt = DICT_STATS_FETCH_ONLY_IF_NOT_IN_MEMORY;
}
} else {
opt = DICT_STATS_RECALC_TRANSIENT;
}
ut_ad(!mutex_own(&dict_sys->mutex));
ret = dict_stats_update(ib_table, opt);
if (ret != DB_SUCCESS) {
prebuilt->trx->op_info = "";
DBUG_RETURN(HA_ERR_GENERIC);
}
prebuilt->trx->op_info =
"returning various info to MySQL";
}
}
if (flag & HA_STATUS_VARIABLE) {
ulint page_size;
ulint stat_clustered_index_size;
ulint stat_sum_of_other_index_sizes;
if (!(flag & HA_STATUS_NO_LOCK)) {
dict_table_stats_lock(ib_table, RW_S_LATCH);
}
ut_a(ib_table->stat_initialized);
n_rows = ib_table->stat_n_rows;
stat_clustered_index_size
= ib_table->stat_clustered_index_size;
stat_sum_of_other_index_sizes
= ib_table->stat_sum_of_other_index_sizes;
if (!(flag & HA_STATUS_NO_LOCK)) {
dict_table_stats_unlock(ib_table, RW_S_LATCH);
}
/*
The MySQL optimizer seems to assume in a left join that n_rows
is an accurate estimate if it is zero. Of course, it is not,
since we do not have any locks on the rows yet at this phase.
Since SHOW TABLE STATUS seems to call this function with the
HA_STATUS_TIME flag set, while the left join optimizer does not
set that flag, we add one to a zero value if the flag is not
set. That way SHOW TABLE STATUS will show the best estimate,
while the optimizer never sees the table empty. */
if (n_rows == 0 && !(flag & HA_STATUS_TIME)) {
n_rows++;
}
/* Fix bug#40386: Not flushing query cache after truncate.
n_rows can not be 0 unless the table is empty, set to 1
instead. The original problem of bug#29507 is actually
fixed in the server code. */
if (thd_sql_command(user_thd) == SQLCOM_TRUNCATE) {
n_rows = 1;
/* We need to reset the prebuilt value too, otherwise
checks for values greater than the last value written
to the table will fail and the autoinc counter will
not be updated. This will force write_row() into
attempting an update of the table's AUTOINC counter. */
prebuilt->autoinc_last_value = 0;
}
page_size = dict_table_zip_size(ib_table);
if (page_size == 0) {
page_size = UNIV_PAGE_SIZE;
}
stats.records = (ha_rows) n_rows;
stats.deleted = 0;
stats.data_file_length
= ((ulonglong) stat_clustered_index_size)
* page_size;
stats.index_file_length
= ((ulonglong) stat_sum_of_other_index_sizes)
* page_size;
/* Since fsp_get_available_space_in_free_extents() is
acquiring latches inside InnoDB, we do not call it if we
are asked by MySQL to avoid locking. Another reason to
avoid the call is that it uses quite a lot of CPU.
See Bug#38185. */
if (flag & HA_STATUS_NO_LOCK
|| !(flag & HA_STATUS_VARIABLE_EXTRA)) {
/* We do not update delete_length if no
locking is requested so the "old" value can
remain. delete_length is initialized to 0 in
the ha_statistics' constructor. Also we only
need delete_length to be set when
HA_STATUS_VARIABLE_EXTRA is set */
} else if (UNIV_UNLIKELY
(srv_force_recovery >= SRV_FORCE_NO_IBUF_MERGE)) {
/* Avoid accessing the tablespace if
innodb_crash_recovery is set to a high value. */
stats.delete_length = 0;
} else {
ullint avail_space;
avail_space = fsp_get_available_space_in_free_extents(
ib_table->space);
if (avail_space == ULLINT_UNDEFINED) {
THD* thd;
char errbuf[MYSYS_STRERROR_SIZE];
thd = ha_thd();
push_warning_printf(
thd,
Sql_condition::WARN_LEVEL_WARN,
ER_CANT_GET_STAT,
"InnoDB: Trying to get the free "
"space for table %s but its "
"tablespace has been discarded or "
"the .ibd file is missing. Setting "
"the free space to zero. "
"(errno: %d - %s)",
ib_table->name, errno,
my_strerror(errbuf, sizeof(errbuf),
errno));
stats.delete_length = 0;
} else {
stats.delete_length = avail_space * 1024;
}
}
stats.check_time = 0;
stats.mrr_length_per_rec = ref_length + sizeof(void*);
if (stats.records == 0) {
stats.mean_rec_length = 0;
} else {
stats.mean_rec_length = (ulong)
(stats.data_file_length / stats.records);
}
}
if (flag & HA_STATUS_CONST) {
ulong i;
char path[FN_REFLEN];
/* Verify the number of index in InnoDB and MySQL
matches up. If prebuilt->clust_index_was_generated
holds, InnoDB defines GEN_CLUST_INDEX internally */
ulint num_innodb_index = UT_LIST_GET_LEN(ib_table->indexes)
- prebuilt->clust_index_was_generated;
if (table->s->keys < num_innodb_index) {
/* If there are too many indexes defined
inside InnoDB, ignore those that are being
created, because MySQL will only consider
the fully built indexes here. */
for (const dict_index_t* index
= UT_LIST_GET_FIRST(ib_table->indexes);
index != NULL;
index = UT_LIST_GET_NEXT(indexes, index)) {
/* First, online index creation is
completed inside InnoDB, and then
MySQL attempts to upgrade the
meta-data lock so that it can rebuild
the .frm file. If we get here in that
time frame, dict_index_is_online_ddl()
would not hold and the index would
still not be included in TABLE_SHARE. */
if (*index->name == TEMP_INDEX_PREFIX) {
num_innodb_index--;
}
}
if (table->s->keys < num_innodb_index
&& innobase_fts_check_doc_id_index(
ib_table, NULL, NULL)
== FTS_EXIST_DOC_ID_INDEX) {
num_innodb_index--;
}
}
if (table->s->keys != num_innodb_index) {
sql_print_error("InnoDB: Table %s contains %lu "
"indexes inside InnoDB, which "
"is different from the number of "
"indexes %u defined in the MySQL ",
ib_table->name, num_innodb_index,
table->s->keys);
}
if (!(flag & HA_STATUS_NO_LOCK)) {
dict_table_stats_lock(ib_table, RW_S_LATCH);
}
ut_a(ib_table->stat_initialized);
for (i = 0; i < table->s->keys; i++) {
ulong j;
/* We could get index quickly through internal
index mapping with the index translation table.
The identity of index (match up index name with
that of table->key_info[i]) is already verified in
innobase_get_index(). */
dict_index_t* index = innobase_get_index(i);
if (index == NULL) {
sql_print_error("Table %s contains fewer "
"indexes inside InnoDB than "
"are defined in the MySQL "
".frm file. Have you mixed up "
".frm files from different "
"installations? See "
REFMAN
"innodb-troubleshooting.html\n",
ib_table->name);
break;
}
for (j = 0; j < table->key_info[i].actual_key_parts; j++) {
if (table->key_info[i].flags & HA_FULLTEXT) {
/* The whole concept has no validity
for FTS indexes. */
table->key_info[i].rec_per_key[j] = 1;
continue;
}
if (j + 1 > index->n_uniq) {
sql_print_error(
"Index %s of %s has %lu columns"
" unique inside InnoDB, but "
"MySQL is asking statistics for"
" %lu columns. Have you mixed "
"up .frm files from different "
"installations? "
"See " REFMAN
"innodb-troubleshooting.html\n",
index->name,
ib_table->name,
(unsigned long)
index->n_uniq, j + 1);
break;
}
rec_per_key = innodb_rec_per_key(
index, j, stats.records);
/* Since MySQL seems to favor table scans
too much over index searches, we pretend
index selectivity is 2 times better than
our estimate: */
rec_per_key = rec_per_key / 2;
if (rec_per_key == 0) {
rec_per_key = 1;
}
table->key_info[i].rec_per_key[j] =
rec_per_key >= ~(ulong) 0 ? ~(ulong) 0 :
(ulong) rec_per_key;
}
}
if (!(flag & HA_STATUS_NO_LOCK)) {
dict_table_stats_unlock(ib_table, RW_S_LATCH);
}
my_snprintf(path, sizeof(path), "%s/%s%s",
mysql_data_home,
table->s->normalized_path.str,
reg_ext);
unpack_filename(path,path);
/* Note that we do not know the access time of the table,
nor the CHECK TABLE time, nor the UPDATE or INSERT time. */
if (os_file_get_status(path, &stat_info, false) == DB_SUCCESS) {
stats.create_time = (ulong) stat_info.ctime;
}
}
if (srv_force_recovery >= SRV_FORCE_NO_IBUF_MERGE) {
goto func_exit;
}
if (flag & HA_STATUS_ERRKEY) {
const dict_index_t* err_index;
ut_a(prebuilt->trx);
ut_a(prebuilt->trx->magic_n == TRX_MAGIC_N);
err_index = trx_get_error_info(prebuilt->trx);
if (err_index) {
errkey = innobase_get_mysql_key_number_for_index(
share, table, ib_table, err_index);
} else {
errkey = (unsigned int) (
(prebuilt->trx->error_key_num
== ULINT_UNDEFINED)
? ~0
: prebuilt->trx->error_key_num);
}
}
if ((flag & HA_STATUS_AUTO) && table->found_next_number_field) {
stats.auto_increment_value = innobase_peek_autoinc();
}
func_exit:
prebuilt->trx->op_info = (char*)"";
DBUG_RETURN(0);
}
/*********************************************************************//**
Returns statistics information of the table to the MySQL interpreter,
in various fields of the handle object.
@return HA_ERR_* error code or 0 */
UNIV_INTERN
int
ha_innobase::info(
/*==============*/
uint flag) /*!< in: what information is requested */
{
return(this->info_low(flag, false /* not ANALYZE */));
}
/**********************************************************************//**
Updates index cardinalities of the table, based on random dives into
each index tree. This does NOT calculate exact statistics on the table.
@return HA_ADMIN_* error code or HA_ADMIN_OK */
UNIV_INTERN
int
ha_innobase::analyze(
/*=================*/
THD* thd, /*!< in: connection thread handle */
HA_CHECK_OPT* check_opt) /*!< in: currently ignored */
{
int ret;
/* Simply call this->info_low() with all the flags
and request recalculation of the statistics */
ret = this->info_low(
HA_STATUS_TIME | HA_STATUS_CONST | HA_STATUS_VARIABLE,
true /* this is ANALYZE */);
if (ret != 0) {
return(HA_ADMIN_FAILED);
}
return(HA_ADMIN_OK);
}
/**********************************************************************//**
This is mapped to "ALTER TABLE tablename ENGINE=InnoDB", which rebuilds
the table in MySQL. */
UNIV_INTERN
int
ha_innobase::optimize(
/*==================*/
THD* thd, /*!< in: connection thread handle */
HA_CHECK_OPT* check_opt) /*!< in: currently ignored */
{
/*FTS-FIXME: Since MySQL doesn't support engine-specific commands,
we have to hijack some existing command in order to be able to test
the new admin commands added in InnoDB's FTS support. For now, we
use MySQL's OPTIMIZE command, normally mapped to ALTER TABLE in
InnoDB (so it recreates the table anew), and map it to OPTIMIZE.
This works OK otherwise, but MySQL locks the entire table during
calls to OPTIMIZE, which is undesirable. */
if (innodb_optimize_fulltext_only) {
if (prebuilt->table->fts && prebuilt->table->fts->cache
&& !dict_table_is_discarded(prebuilt->table)) {
fts_sync_table(prebuilt->table);
fts_optimize_table(prebuilt->table);
}
return(HA_ADMIN_OK);
} else {
return(HA_ADMIN_TRY_ALTER);
}
}
/*******************************************************************//**
Tries to check that an InnoDB table is not corrupted. If corruption is
noticed, prints to stderr information about it. In case of corruption
may also assert a failure and crash the server.
@return HA_ADMIN_CORRUPT or HA_ADMIN_OK */
UNIV_INTERN
int
ha_innobase::check(
/*===============*/
THD* thd, /*!< in: user thread handle */
HA_CHECK_OPT* check_opt) /*!< in: check options */
{
dict_index_t* index;
ulint n_rows;
ulint n_rows_in_table = ULINT_UNDEFINED;
bool is_ok = true;
ulint old_isolation_level;
ibool table_corrupted;
DBUG_ENTER("ha_innobase::check");
DBUG_ASSERT(thd == ha_thd());
ut_a(prebuilt->trx);
ut_a(prebuilt->trx->magic_n == TRX_MAGIC_N);
ut_a(prebuilt->trx == thd_to_trx(thd));
if (prebuilt->mysql_template == NULL) {
/* Build the template; we will use a dummy template
in index scans done in checking */
build_template(true);
}
if (dict_table_is_discarded(prebuilt->table)) {
ib_senderrf(
thd,
IB_LOG_LEVEL_ERROR,
ER_TABLESPACE_DISCARDED,
table->s->table_name.str);
DBUG_RETURN(HA_ADMIN_CORRUPT);
} else if (prebuilt->table->ibd_file_missing) {
ib_senderrf(
thd, IB_LOG_LEVEL_ERROR,
ER_TABLESPACE_MISSING,
table->s->table_name.str);
DBUG_RETURN(HA_ADMIN_CORRUPT);
}
prebuilt->trx->op_info = "checking table";
old_isolation_level = prebuilt->trx->isolation_level;
/* We must run the index record counts at an isolation level
>= READ COMMITTED, because a dirty read can see a wrong number
of records in some index; to play safe, we use always
REPEATABLE READ here */
prebuilt->trx->isolation_level = TRX_ISO_REPEATABLE_READ;
/* Check whether the table is already marked as corrupted
before running the check table */
table_corrupted = prebuilt->table->corrupted;
/* Reset table->corrupted bit so that check table can proceed to
do additional check */
prebuilt->table->corrupted = FALSE;
for (index = dict_table_get_first_index(prebuilt->table);
index != NULL;
index = dict_table_get_next_index(index)) {
char index_name[MAX_FULL_NAME_LEN + 1];
/* If this is an index being created or dropped, skip */
if (*index->name == TEMP_INDEX_PREFIX) {
continue;
}
if (!(check_opt->flags & T_QUICK)) {
/* Enlarge the fatal lock wait timeout during
CHECK TABLE. */
os_increment_counter_by_amount(
server_mutex,
srv_fatal_semaphore_wait_threshold,
SRV_SEMAPHORE_WAIT_EXTENSION);
bool valid = btr_validate_index(index, prebuilt->trx);
/* Restore the fatal lock wait timeout after
CHECK TABLE. */
os_decrement_counter_by_amount(
server_mutex,
srv_fatal_semaphore_wait_threshold,
SRV_SEMAPHORE_WAIT_EXTENSION);
if (!valid) {
is_ok = false;
innobase_format_name(
index_name, sizeof index_name,
index->name, TRUE);
push_warning_printf(
thd,
Sql_condition::WARN_LEVEL_WARN,
ER_NOT_KEYFILE,
"InnoDB: The B-tree of"
" index %s is corrupted.",
index_name);
continue;
}
}
/* Instead of invoking change_active_index(), set up
a dummy template for non-locking reads, disabling
access to the clustered index. */
prebuilt->index = index;
prebuilt->index_usable = row_merge_is_index_usable(
prebuilt->trx, prebuilt->index);
if (UNIV_UNLIKELY(!prebuilt->index_usable)) {
innobase_format_name(
index_name, sizeof index_name,
prebuilt->index->name, TRUE);
if (dict_index_is_corrupted(prebuilt->index)) {
push_warning_printf(
user_thd,
Sql_condition::WARN_LEVEL_WARN,
HA_ERR_INDEX_CORRUPT,
"InnoDB: Index %s is marked as"
" corrupted",
index_name);
is_ok = false;
} else {
push_warning_printf(
thd,
Sql_condition::WARN_LEVEL_WARN,
HA_ERR_TABLE_DEF_CHANGED,
"InnoDB: Insufficient history for"
" index %s",
index_name);
}
continue;
}
prebuilt->sql_stat_start = TRUE;
prebuilt->template_type = ROW_MYSQL_DUMMY_TEMPLATE;
prebuilt->n_template = 0;
prebuilt->need_to_access_clustered = FALSE;
dtuple_set_n_fields(prebuilt->search_tuple, 0);
prebuilt->select_lock_type = LOCK_NONE;
if (!row_check_index_for_mysql(prebuilt, index, &n_rows)) {
innobase_format_name(
index_name, sizeof index_name,
index->name, TRUE);
push_warning_printf(
thd, Sql_condition::WARN_LEVEL_WARN,
ER_NOT_KEYFILE,
"InnoDB: The B-tree of"
" index %s is corrupted.",
index_name);
is_ok = false;
dict_set_corrupted(
index, prebuilt->trx, "CHECK TABLE-check index");
}
if (thd_killed(user_thd)) {
break;
}
#if 0
fprintf(stderr, "%lu entries in index %s\n", n_rows,
index->name);
#endif
if (index == dict_table_get_first_index(prebuilt->table)) {
n_rows_in_table = n_rows;
} else if (!(index->type & DICT_FTS)
&& (n_rows != n_rows_in_table)) {
push_warning_printf(
thd, Sql_condition::WARN_LEVEL_WARN,
ER_NOT_KEYFILE,
"InnoDB: Index '%-.200s' contains %lu"
" entries, should be %lu.",
index->name,
(ulong) n_rows,
(ulong) n_rows_in_table);
is_ok = false;
dict_set_corrupted(
index, prebuilt->trx,
"CHECK TABLE; Wrong count");
}
}
if (table_corrupted) {
/* If some previous operation has marked the table as
corrupted in memory, and has not propagated such to
clustered index, we will do so here */
index = dict_table_get_first_index(prebuilt->table);
if (!dict_index_is_corrupted(index)) {
dict_set_corrupted(
index, prebuilt->trx, "CHECK TABLE");
}
prebuilt->table->corrupted = TRUE;
}
/* Restore the original isolation level */
prebuilt->trx->isolation_level = old_isolation_level;
/* We validate the whole adaptive hash index for all tables
at every CHECK TABLE only when QUICK flag is not present. */
#if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG
if (!(check_opt->flags & T_QUICK) && !btr_search_validate()) {
push_warning(thd, Sql_condition::WARN_LEVEL_WARN,
ER_NOT_KEYFILE,
"InnoDB: The adaptive hash index is corrupted.");
is_ok = false;
}
#endif /* defined UNIV_AHI_DEBUG || defined UNIV_DEBUG */
prebuilt->trx->op_info = "";
if (thd_killed(user_thd)) {
my_error(ER_QUERY_INTERRUPTED, MYF(0));
}
DBUG_RETURN(is_ok ? HA_ADMIN_OK : HA_ADMIN_CORRUPT);
}
/*************************************************************//**
Adds information about free space in the InnoDB tablespace to a table comment
which is printed out when a user calls SHOW TABLE STATUS. Adds also info on
foreign keys.
@return table comment + InnoDB free space + info on foreign keys */
UNIV_INTERN
char*
ha_innobase::update_table_comment(
/*==============================*/
const char* comment)/*!< in: table comment defined by user */
{
uint length = (uint) strlen(comment);
char* str;
long flen;
/* We do not know if MySQL can call this function before calling
external_lock(). To be safe, update the thd of the current table
handle. */
if (length > 64000 - 3) {
return((char*) comment); /* string too long */
}
update_thd(ha_thd());
prebuilt->trx->op_info = (char*)"returning table comment";
/* In case MySQL calls this in the middle of a SELECT query, release
possible adaptive hash latch to avoid deadlocks of threads */
trx_search_latch_release_if_reserved(prebuilt->trx);
str = NULL;
/* output the data to a temporary file */
if (!srv_read_only_mode) {
mutex_enter(&srv_dict_tmpfile_mutex);
rewind(srv_dict_tmpfile);
fprintf(srv_dict_tmpfile, "InnoDB free: %llu kB",
fsp_get_available_space_in_free_extents(
prebuilt->table->space));
dict_print_info_on_foreign_keys(
FALSE, srv_dict_tmpfile, prebuilt->trx,
prebuilt->table);
flen = ftell(srv_dict_tmpfile);
if (flen < 0) {
flen = 0;
} else if (length + flen + 3 > 64000) {
flen = 64000 - 3 - length;
}
/* allocate buffer for the full string, and
read the contents of the temporary file */
str = (char*) my_malloc(length + flen + 3, MYF(0));
if (str) {
char* pos = str + length;
if (length) {
memcpy(str, comment, length);
*pos++ = ';';
*pos++ = ' ';
}
rewind(srv_dict_tmpfile);
flen = (uint) fread(pos, 1, flen, srv_dict_tmpfile);
pos[flen] = 0;
}
mutex_exit(&srv_dict_tmpfile_mutex);
}
prebuilt->trx->op_info = (char*)"";
return(str ? str : (char*) comment);
}
/*******************************************************************//**
Gets the foreign key create info for a table stored in InnoDB.
@return own: character string in the form which can be inserted to the
CREATE TABLE statement, MUST be freed with
ha_innobase::free_foreign_key_create_info */
UNIV_INTERN
char*
ha_innobase::get_foreign_key_create_info(void)
/*==========================================*/
{
long flen;
char* str = 0;
ut_a(prebuilt != NULL);
/* We do not know if MySQL can call this function before calling
external_lock(). To be safe, update the thd of the current table
handle. */
update_thd(ha_thd());
prebuilt->trx->op_info = (char*)"getting info on foreign keys";
/* In case MySQL calls this in the middle of a SELECT query,
release possible adaptive hash latch to avoid
deadlocks of threads */
trx_search_latch_release_if_reserved(prebuilt->trx);
if (!srv_read_only_mode) {
mutex_enter(&srv_dict_tmpfile_mutex);
rewind(srv_dict_tmpfile);
/* Output the data to a temporary file */
dict_print_info_on_foreign_keys(
TRUE, srv_dict_tmpfile, prebuilt->trx,
prebuilt->table);
prebuilt->trx->op_info = (char*)"";
flen = ftell(srv_dict_tmpfile);
if (flen < 0) {
flen = 0;
}
/* Allocate buffer for the string, and
read the contents of the temporary file */
str = (char*) my_malloc(flen + 1, MYF(0));
if (str) {
rewind(srv_dict_tmpfile);
flen = (uint) fread(str, 1, flen, srv_dict_tmpfile);
str[flen] = 0;
}
mutex_exit(&srv_dict_tmpfile_mutex);
}
return(str);
}
/***********************************************************************//**
Maps a InnoDB foreign key constraint to a equivalent MySQL foreign key info.
@return pointer to foreign key info */
static
FOREIGN_KEY_INFO*
get_foreign_key_info(
/*=================*/
THD* thd, /*!< in: user thread handle */
dict_foreign_t* foreign) /*!< in: foreign key constraint */
{
FOREIGN_KEY_INFO f_key_info;
FOREIGN_KEY_INFO* pf_key_info;
uint i = 0;
ulint len;
char tmp_buff[NAME_LEN+1];
char name_buff[NAME_LEN+1];
const char* ptr;
LEX_STRING* referenced_key_name;
LEX_STRING* name = NULL;
ptr = dict_remove_db_name(foreign->id);
f_key_info.foreign_id = thd_make_lex_string(thd, 0, ptr,
(uint) strlen(ptr), 1);
/* Name format: database name, '/', table name, '\0' */
/* Referenced (parent) database name */
len = dict_get_db_name_len(foreign->referenced_table_name);
ut_a(len < sizeof(tmp_buff));
ut_memcpy(tmp_buff, foreign->referenced_table_name, len);
tmp_buff[len] = 0;
len = filename_to_tablename(tmp_buff, name_buff, sizeof(name_buff));
f_key_info.referenced_db = thd_make_lex_string(
thd, 0, name_buff, static_cast<unsigned int>(len), 1);
/* Referenced (parent) table name */
ptr = dict_remove_db_name(foreign->referenced_table_name);
len = filename_to_tablename(ptr, name_buff, sizeof(name_buff));
f_key_info.referenced_table = thd_make_lex_string(
thd, 0, name_buff, static_cast<unsigned int>(len), 1);
/* Dependent (child) database name */
len = dict_get_db_name_len(foreign->foreign_table_name);
ut_a(len < sizeof(tmp_buff));
ut_memcpy(tmp_buff, foreign->foreign_table_name, len);
tmp_buff[len] = 0;
len = filename_to_tablename(tmp_buff, name_buff, sizeof(name_buff));
f_key_info.foreign_db = thd_make_lex_string(
thd, 0, name_buff, static_cast<unsigned int>(len), 1);
/* Dependent (child) table name */
ptr = dict_remove_db_name(foreign->foreign_table_name);
len = filename_to_tablename(ptr, name_buff, sizeof(name_buff));
f_key_info.foreign_table = thd_make_lex_string(
thd, 0, name_buff, static_cast<unsigned int>(len), 1);
do {
ptr = foreign->foreign_col_names[i];
name = thd_make_lex_string(thd, name, ptr,
(uint) strlen(ptr), 1);
f_key_info.foreign_fields.push_back(name);
ptr = foreign->referenced_col_names[i];
name = thd_make_lex_string(thd, name, ptr,
(uint) strlen(ptr), 1);
f_key_info.referenced_fields.push_back(name);
} while (++i < foreign->n_fields);
if (foreign->type & DICT_FOREIGN_ON_DELETE_CASCADE) {
len = 7;
ptr = "CASCADE";
} else if (foreign->type & DICT_FOREIGN_ON_DELETE_SET_NULL) {
len = 8;
ptr = "SET NULL";
} else if (foreign->type & DICT_FOREIGN_ON_DELETE_NO_ACTION) {
len = 9;
ptr = "NO ACTION";
} else {
len = 8;
ptr = "RESTRICT";
}
f_key_info.delete_method = thd_make_lex_string(
thd, f_key_info.delete_method, ptr,
static_cast<unsigned int>(len), 1);
if (foreign->type & DICT_FOREIGN_ON_UPDATE_CASCADE) {
len = 7;
ptr = "CASCADE";
} else if (foreign->type & DICT_FOREIGN_ON_UPDATE_SET_NULL) {
len = 8;
ptr = "SET NULL";
} else if (foreign->type & DICT_FOREIGN_ON_UPDATE_NO_ACTION) {
len = 9;
ptr = "NO ACTION";
} else {
len = 8;
ptr = "RESTRICT";
}
f_key_info.update_method = thd_make_lex_string(
thd, f_key_info.update_method, ptr,
static_cast<unsigned int>(len), 1);
if (foreign->referenced_index && foreign->referenced_index->name) {
referenced_key_name = thd_make_lex_string(thd,
f_key_info.referenced_key_name,
foreign->referenced_index->name,
(uint) strlen(foreign->referenced_index->name),
1);
} else {
referenced_key_name = NULL;
}
f_key_info.referenced_key_name = referenced_key_name;
pf_key_info = (FOREIGN_KEY_INFO*) thd_memdup(thd, &f_key_info,
sizeof(FOREIGN_KEY_INFO));
return(pf_key_info);
}
/*******************************************************************//**
Gets the list of foreign keys in this table.
@return always 0, that is, always succeeds */
UNIV_INTERN
int
ha_innobase::get_foreign_key_list(
/*==============================*/
THD* thd, /*!< in: user thread handle */
List<FOREIGN_KEY_INFO>* f_key_list) /*!< out: foreign key list */
{
FOREIGN_KEY_INFO* pf_key_info;
dict_foreign_t* foreign;
ut_a(prebuilt != NULL);
update_thd(ha_thd());
prebuilt->trx->op_info = "getting list of foreign keys";
trx_search_latch_release_if_reserved(prebuilt->trx);
mutex_enter(&(dict_sys->mutex));
for (dict_foreign_set::iterator it
= prebuilt->table->foreign_set.begin();
it != prebuilt->table->foreign_set.end();
++it) {
foreign = *it;
pf_key_info = get_foreign_key_info(thd, foreign);
if (pf_key_info) {
f_key_list->push_back(pf_key_info);
}
}
mutex_exit(&(dict_sys->mutex));
prebuilt->trx->op_info = "";
return(0);
}
/*******************************************************************//**
Gets the set of foreign keys where this table is the referenced table.
@return always 0, that is, always succeeds */
UNIV_INTERN
int
ha_innobase::get_parent_foreign_key_list(
/*=====================================*/
THD* thd, /*!< in: user thread handle */
List<FOREIGN_KEY_INFO>* f_key_list) /*!< out: foreign key list */
{
FOREIGN_KEY_INFO* pf_key_info;
dict_foreign_t* foreign;
ut_a(prebuilt != NULL);
update_thd(ha_thd());
prebuilt->trx->op_info = "getting list of referencing foreign keys";
trx_search_latch_release_if_reserved(prebuilt->trx);
mutex_enter(&(dict_sys->mutex));
for (dict_foreign_set::iterator it
= prebuilt->table->referenced_set.begin();
it != prebuilt->table->referenced_set.end();
++it) {
foreign = *it;
pf_key_info = get_foreign_key_info(thd, foreign);
if (pf_key_info) {
f_key_list->push_back(pf_key_info);
}
}
mutex_exit(&(dict_sys->mutex));
prebuilt->trx->op_info = "";
return(0);
}
/*****************************************************************//**
Checks if ALTER TABLE may change the storage engine of the table.
Changing storage engines is not allowed for tables for which there
are foreign key constraints (parent or child tables).
@return TRUE if can switch engines */
UNIV_INTERN
bool
ha_innobase::can_switch_engines(void)
/*=================================*/
{
bool can_switch;
DBUG_ENTER("ha_innobase::can_switch_engines");
update_thd();
prebuilt->trx->op_info =
"determining if there are foreign key constraints";
row_mysql_freeze_data_dictionary(prebuilt->trx);
can_switch = prebuilt->table->referenced_set.empty()
&& prebuilt->table->foreign_set.empty();
row_mysql_unfreeze_data_dictionary(prebuilt->trx);
prebuilt->trx->op_info = "";
DBUG_RETURN(can_switch);
}
/*******************************************************************//**
Checks if a table is referenced by a foreign key. The MySQL manual states that
a REPLACE is either equivalent to an INSERT, or DELETE(s) + INSERT. Only a
delete is then allowed internally to resolve a duplicate key conflict in
REPLACE, not an update.
@return > 0 if referenced by a FOREIGN KEY */
UNIV_INTERN
uint
ha_innobase::referenced_by_foreign_key(void)
/*========================================*/
{
if (dict_table_is_referenced_by_foreign_key(prebuilt->table)) {
return(1);
}
return(0);
}
/*******************************************************************//**
Frees the foreign key create info for a table stored in InnoDB, if it is
non-NULL. */
UNIV_INTERN
void
ha_innobase::free_foreign_key_create_info(
/*======================================*/
char* str) /*!< in, own: create info string to free */
{
if (str) {
my_free(str);
}
}
/*******************************************************************//**
Tells something additional to the handler about how to do things.
@return 0 or error number */
UNIV_INTERN
int
ha_innobase::extra(
/*===============*/
enum ha_extra_function operation)
/*!< in: HA_EXTRA_FLUSH or some other flag */
{
check_trx_exists(ha_thd());
/* Warning: since it is not sure that MySQL calls external_lock
before calling this function, the trx field in prebuilt can be
obsolete! */
switch (operation) {
case HA_EXTRA_FLUSH:
if (prebuilt->blob_heap) {
row_mysql_prebuilt_free_blob_heap(prebuilt);
}
break;
case HA_EXTRA_RESET_STATE:
reset_template();
thd_to_trx(ha_thd())->duplicates = 0;
break;
case HA_EXTRA_NO_KEYREAD:
prebuilt->read_just_key = 0;
break;
case HA_EXTRA_KEYREAD:
prebuilt->read_just_key = 1;
break;
case HA_EXTRA_KEYREAD_PRESERVE_FIELDS:
prebuilt->keep_other_fields_on_keyread = 1;
break;
/* IMPORTANT: prebuilt->trx can be obsolete in
this method, because it is not sure that MySQL
calls external_lock before this method with the
parameters below. We must not invoke update_thd()
either, because the calling threads may change.
CAREFUL HERE, OR MEMORY CORRUPTION MAY OCCUR! */
case HA_EXTRA_INSERT_WITH_UPDATE:
thd_to_trx(ha_thd())->duplicates |= TRX_DUP_IGNORE;
break;
case HA_EXTRA_NO_IGNORE_DUP_KEY:
thd_to_trx(ha_thd())->duplicates &= ~TRX_DUP_IGNORE;
break;
case HA_EXTRA_WRITE_CAN_REPLACE:
thd_to_trx(ha_thd())->duplicates |= TRX_DUP_REPLACE;
break;
case HA_EXTRA_WRITE_CANNOT_REPLACE:
thd_to_trx(ha_thd())->duplicates &= ~TRX_DUP_REPLACE;
break;
default:/* Do nothing */
;
}
return(0);
}
/******************************************************************//**
*/
UNIV_INTERN
int
ha_innobase::reset()
/*================*/
{
if (prebuilt->blob_heap) {
row_mysql_prebuilt_free_blob_heap(prebuilt);
}
reset_template();
ds_mrr.reset();
/* TODO: This should really be reset in reset_template() but for now
it's safer to do it explicitly here. */
/* This is a statement level counter. */
prebuilt->autoinc_last_value = 0;
return(0);
}
/******************************************************************//**
MySQL calls this function at the start of each SQL statement inside LOCK
TABLES. Inside LOCK TABLES the ::external_lock method does not work to
mark SQL statement borders. Note also a special case: if a temporary table
is created inside LOCK TABLES, MySQL has not called external_lock() at all
on that table.
MySQL-5.0 also calls this before each statement in an execution of a stored
procedure. To make the execution more deterministic for binlogging, MySQL-5.0
locks all tables involved in a stored procedure with full explicit table
locks (thd_in_lock_tables(thd) holds in store_lock()) before executing the
procedure.
@return 0 or error code */
UNIV_INTERN
int
ha_innobase::start_stmt(
/*====================*/
THD* thd, /*!< in: handle to the user thread */
thr_lock_type lock_type)
{
trx_t* trx;
DBUG_ENTER("ha_innobase::start_stmt");
update_thd(thd);
trx = prebuilt->trx;
/* Here we release the search latch and the InnoDB thread FIFO ticket
if they were reserved. They should have been released already at the
end of the previous statement, but because inside LOCK TABLES the
lock count method does not work to mark the end of a SELECT statement,
that may not be the case. We MUST release the search latch before an
INSERT, for example. */
trx_search_latch_release_if_reserved(trx);
innobase_srv_conc_force_exit_innodb(trx);
/* Reset the AUTOINC statement level counter for multi-row INSERTs. */
trx->n_autoinc_rows = 0;
prebuilt->sql_stat_start = TRUE;
prebuilt->hint_need_to_fetch_extra_cols = 0;
reset_template();
if (dict_table_is_temporary(prebuilt->table)
&& prebuilt->mysql_has_locked
&& prebuilt->select_lock_type == LOCK_NONE) {
dberr_t error;
switch (thd_sql_command(thd)) {
case SQLCOM_INSERT:
case SQLCOM_UPDATE:
case SQLCOM_DELETE:
init_table_handle_for_HANDLER();
prebuilt->select_lock_type = LOCK_X;
prebuilt->stored_select_lock_type = LOCK_X;
error = row_lock_table_for_mysql(prebuilt, NULL, 1);
if (error != DB_SUCCESS) {
int st = convert_error_code_to_mysql(
error, 0, thd);
DBUG_RETURN(st);
}
break;
}
}
if (!prebuilt->mysql_has_locked) {
/* This handle is for a temporary table created inside
this same LOCK TABLES; since MySQL does NOT call external_lock
in this case, we must use x-row locks inside InnoDB to be
prepared for an update of a row */
prebuilt->select_lock_type = LOCK_X;
} else if (trx->isolation_level != TRX_ISO_SERIALIZABLE
&& thd_sql_command(thd) == SQLCOM_SELECT
&& lock_type == TL_READ) {
/* For other than temporary tables, we obtain
no lock for consistent read (plain SELECT). */
prebuilt->select_lock_type = LOCK_NONE;
} else {
/* Not a consistent read: restore the
select_lock_type value. The value of
stored_select_lock_type was decided in:
1) ::store_lock(),
2) ::external_lock(),
3) ::init_table_handle_for_HANDLER(), and
4) ::transactional_table_lock(). */
ut_a(prebuilt->stored_select_lock_type != LOCK_NONE_UNSET);
prebuilt->select_lock_type = prebuilt->stored_select_lock_type;
}
*trx->detailed_error = 0;
innobase_register_trx(ht, thd, trx);
if (!trx_is_started(trx)) {
++trx->will_lock;
}
DBUG_RETURN(0);
}
/******************************************************************//**
Maps a MySQL trx isolation level code to the InnoDB isolation level code
@return InnoDB isolation level */
static inline
ulint
innobase_map_isolation_level(
/*=========================*/
enum_tx_isolation iso) /*!< in: MySQL isolation level code */
{
switch (iso) {
case ISO_REPEATABLE_READ: return(TRX_ISO_REPEATABLE_READ);
case ISO_READ_COMMITTED: return(TRX_ISO_READ_COMMITTED);
case ISO_SERIALIZABLE: return(TRX_ISO_SERIALIZABLE);
case ISO_READ_UNCOMMITTED: return(TRX_ISO_READ_UNCOMMITTED);
}
ut_error;
return(0);
}
/******************************************************************//**
As MySQL will execute an external lock for every new table it uses when it
starts to process an SQL statement (an exception is when MySQL calls
start_stmt for the handle) we can use this function to store the pointer to
the THD in the handle. We will also use this function to communicate
to InnoDB that a new SQL statement has started and that we must store a
savepoint to our transaction handle, so that we are able to roll back
the SQL statement in case of an error.
@return 0 */
UNIV_INTERN
int
ha_innobase::external_lock(
/*=======================*/
THD* thd, /*!< in: handle to the user thread */
int lock_type) /*!< in: lock type */
{
trx_t* trx;
DBUG_ENTER("ha_innobase::external_lock");
DBUG_PRINT("enter",("lock_type: %d", lock_type));
update_thd(thd);
/* Statement based binlogging does not work in isolation level
READ UNCOMMITTED and READ COMMITTED since the necessary
locks cannot be taken. In this case, we print an
informative error message and return with an error.
Note: decide_logging_format would give the same error message,
except it cannot give the extra details. */
if (lock_type == F_WRLCK
&& !(table_flags() & HA_BINLOG_STMT_CAPABLE)
&& thd_binlog_format(thd) == BINLOG_FORMAT_STMT
&& thd_binlog_filter_ok(thd)
&& thd_sqlcom_can_generate_row_events(thd)) {
bool skip = 0;
/* used by test case */
DBUG_EXECUTE_IF("no_innodb_binlog_errors", skip = true;);
if (!skip) {
my_error(ER_BINLOG_STMT_MODE_AND_ROW_ENGINE, MYF(0),
" InnoDB is limited to row-logging when "
"transaction isolation level is "
"READ COMMITTED or READ UNCOMMITTED.");
DBUG_RETURN(HA_ERR_LOGGING_IMPOSSIBLE);
}
}
/* Check for UPDATEs in read-only mode. */
if (srv_read_only_mode
&& (thd_sql_command(thd) == SQLCOM_UPDATE
|| thd_sql_command(thd) == SQLCOM_INSERT
|| thd_sql_command(thd) == SQLCOM_REPLACE
|| thd_sql_command(thd) == SQLCOM_DROP_TABLE
|| thd_sql_command(thd) == SQLCOM_ALTER_TABLE
|| thd_sql_command(thd) == SQLCOM_OPTIMIZE
|| (thd_sql_command(thd) == SQLCOM_CREATE_TABLE
&& lock_type == F_WRLCK)
|| thd_sql_command(thd) == SQLCOM_CREATE_INDEX
|| thd_sql_command(thd) == SQLCOM_DROP_INDEX
|| thd_sql_command(thd) == SQLCOM_DELETE)) {
if (thd_sql_command(thd) == SQLCOM_CREATE_TABLE)
{
ib_senderrf(thd, IB_LOG_LEVEL_WARN,
ER_INNODB_READ_ONLY);
DBUG_RETURN(HA_ERR_INNODB_READ_ONLY);
} else {
ib_senderrf(thd, IB_LOG_LEVEL_WARN,
ER_READ_ONLY_MODE);
DBUG_RETURN(HA_ERR_TABLE_READONLY);
}
}
trx = prebuilt->trx;
prebuilt->sql_stat_start = TRUE;
prebuilt->hint_need_to_fetch_extra_cols = 0;
reset_template();
switch (prebuilt->table->quiesce) {
case QUIESCE_START:
/* Check for FLUSH TABLE t WITH READ LOCK; */
if (!srv_read_only_mode
&& thd_sql_command(thd) == SQLCOM_FLUSH
&& lock_type == F_RDLCK) {
row_quiesce_table_start(prebuilt->table, trx);
/* Use the transaction instance to track UNLOCK
TABLES. It can be done via START TRANSACTION; too
implicitly. */
++trx->flush_tables;
}
break;
case QUIESCE_COMPLETE:
/* Check for UNLOCK TABLES; implicit or explicit
or trx interruption. */
if (trx->flush_tables > 0
&& (lock_type == F_UNLCK || trx_is_interrupted(trx))) {
row_quiesce_table_complete(prebuilt->table, trx);
ut_a(trx->flush_tables > 0);
--trx->flush_tables;
}
break;
case QUIESCE_NONE:
break;
}
if (lock_type == F_WRLCK) {
/* If this is a SELECT, then it is in UPDATE TABLE ...
or SELECT ... FOR UPDATE */
prebuilt->select_lock_type = LOCK_X;
prebuilt->stored_select_lock_type = LOCK_X;
}
if (lock_type != F_UNLCK) {
/* MySQL is setting a new table lock */
*trx->detailed_error = 0;
innobase_register_trx(ht, thd, trx);
if (trx->isolation_level == TRX_ISO_SERIALIZABLE
&& prebuilt->select_lock_type == LOCK_NONE
&& thd_test_options(
thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) {
/* To get serializable execution, we let InnoDB
conceptually add 'LOCK IN SHARE MODE' to all SELECTs
which otherwise would have been consistent reads. An
exception is consistent reads in the AUTOCOMMIT=1 mode:
we know that they are read-only transactions, and they
can be serialized also if performed as consistent
reads. */
prebuilt->select_lock_type = LOCK_S;
prebuilt->stored_select_lock_type = LOCK_S;
}
/* Starting from 4.1.9, no InnoDB table lock is taken in LOCK
TABLES if AUTOCOMMIT=1. It does not make much sense to acquire
an InnoDB table lock if it is released immediately at the end
of LOCK TABLES, and InnoDB's table locks in that case cause
VERY easily deadlocks.
We do not set InnoDB table locks if user has not explicitly
requested a table lock. Note that thd_in_lock_tables(thd)
can hold in some cases, e.g., at the start of a stored
procedure call (SQLCOM_CALL). */
if (prebuilt->select_lock_type != LOCK_NONE) {
if (thd_sql_command(thd) == SQLCOM_LOCK_TABLES
&& THDVAR(thd, table_locks)
&& thd_test_options(thd, OPTION_NOT_AUTOCOMMIT)
&& thd_in_lock_tables(thd)) {
dberr_t error = row_lock_table_for_mysql(
prebuilt, NULL, 0);
if (error != DB_SUCCESS) {
DBUG_RETURN(
convert_error_code_to_mysql(
error, 0, thd));
}
}
trx->mysql_n_tables_locked++;
}
trx->n_mysql_tables_in_use++;
prebuilt->mysql_has_locked = TRUE;
if (!trx_is_started(trx)
&& (prebuilt->select_lock_type != LOCK_NONE
|| prebuilt->stored_select_lock_type != LOCK_NONE)) {
++trx->will_lock;
}
DBUG_RETURN(0);
}
/* MySQL is releasing a table lock */
trx->n_mysql_tables_in_use--;
prebuilt->mysql_has_locked = FALSE;
/* Release a possible FIFO ticket and search latch. Since we
may reserve the trx_sys->mutex, we have to release the search
system latch first to obey the latching order. */
trx_search_latch_release_if_reserved(trx);
innobase_srv_conc_force_exit_innodb(trx);
/* If the MySQL lock count drops to zero we know that the current SQL
statement has ended */
if (trx->n_mysql_tables_in_use == 0) {
trx->mysql_n_tables_locked = 0;
prebuilt->used_in_HANDLER = FALSE;
if (!thd_test_options(
thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) {
if (trx_is_started(trx)) {
innobase_commit(ht, thd, TRUE);
}
} else if (trx->isolation_level <= TRX_ISO_READ_COMMITTED
&& trx->global_read_view) {
/* At low transaction isolation levels we let
each consistent read set its own snapshot */
read_view_close_for_mysql(trx);
}
}
if (!trx_is_started(trx)
&& (prebuilt->select_lock_type != LOCK_NONE
|| prebuilt->stored_select_lock_type != LOCK_NONE)) {
++trx->will_lock;
}
DBUG_RETURN(0);
}
/******************************************************************//**
With this function MySQL request a transactional lock to a table when
user issued query LOCK TABLES..WHERE ENGINE = InnoDB.
@return error code */
UNIV_INTERN
int
ha_innobase::transactional_table_lock(
/*==================================*/
THD* thd, /*!< in: handle to the user thread */
int lock_type) /*!< in: lock type */
{
trx_t* trx;
DBUG_ENTER("ha_innobase::transactional_table_lock");
DBUG_PRINT("enter",("lock_type: %d", lock_type));
/* We do not know if MySQL can call this function before calling
external_lock(). To be safe, update the thd of the current table
handle. */
update_thd(thd);
if (!thd_tablespace_op(thd)) {
if (dict_table_is_discarded(prebuilt->table)) {
ib_senderrf(
thd, IB_LOG_LEVEL_ERROR,
ER_TABLESPACE_DISCARDED,
table->s->table_name.str);
} else if (prebuilt->table->ibd_file_missing) {
ib_senderrf(
thd, IB_LOG_LEVEL_ERROR,
ER_TABLESPACE_MISSING,
table->s->table_name.str);
}
DBUG_RETURN(HA_ERR_CRASHED);
}
trx = prebuilt->trx;
prebuilt->sql_stat_start = TRUE;
prebuilt->hint_need_to_fetch_extra_cols = 0;
reset_template();
if (lock_type == F_WRLCK) {
prebuilt->select_lock_type = LOCK_X;
prebuilt->stored_select_lock_type = LOCK_X;
} else if (lock_type == F_RDLCK) {
prebuilt->select_lock_type = LOCK_S;
prebuilt->stored_select_lock_type = LOCK_S;
} else {
ib_logf(IB_LOG_LEVEL_ERROR,
"MySQL is trying to set transactional table lock "
"with corrupted lock type to table %s, lock type "
"%d does not exist.",
table->s->table_name.str, lock_type);
DBUG_RETURN(HA_ERR_CRASHED);
}
/* MySQL is setting a new transactional table lock */
innobase_register_trx(ht, thd, trx);
if (THDVAR(thd, table_locks) && thd_in_lock_tables(thd)) {
dberr_t error;
error = row_lock_table_for_mysql(prebuilt, NULL, 0);
if (error != DB_SUCCESS) {
DBUG_RETURN(
convert_error_code_to_mysql(
error, prebuilt->table->flags, thd));
}
if (thd_test_options(
thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) {
/* Store the current undo_no of the transaction
so that we know where to roll back if we have
to roll back the next SQL statement */
trx_mark_sql_stat_end(trx);
}
}
DBUG_RETURN(0);
}
/************************************************************************//**
Here we export InnoDB status variables to MySQL. */
static
void
innodb_export_status()
/*==================*/
{
if (innodb_inited) {
srv_export_innodb_status();
}
}
/************************************************************************//**
Implements the SHOW ENGINE INNODB STATUS command. Sends the output of the
InnoDB Monitor to the client.
@return 0 on success */
static
int
innodb_show_status(
/*===============*/
handlerton* hton, /*!< in: the innodb handlerton */
THD* thd, /*!< in: the MySQL query thread of the caller */
stat_print_fn* stat_print)
{
trx_t* trx;
static const char truncated_msg[] = "... truncated...\n";
const long MAX_STATUS_SIZE = 1048576;
ulint trx_list_start = ULINT_UNDEFINED;
ulint trx_list_end = ULINT_UNDEFINED;
bool ret_val;
DBUG_ENTER("innodb_show_status");
DBUG_ASSERT(hton == innodb_hton_ptr);
/* We don't create the temp files or associated
mutexes in read-only-mode */
if (srv_read_only_mode) {
DBUG_RETURN(0);
}
trx = check_trx_exists(thd);
trx_search_latch_release_if_reserved(trx);
innobase_srv_conc_force_exit_innodb(trx);
/* We let the InnoDB Monitor to output at most MAX_STATUS_SIZE
bytes of text. */
char* str;
ssize_t flen, usable_len;
mutex_enter(&srv_monitor_file_mutex);
rewind(srv_monitor_file);
srv_printf_innodb_monitor(srv_monitor_file, FALSE,
&trx_list_start, &trx_list_end);
os_file_set_eof(srv_monitor_file);
if ((flen = ftell(srv_monitor_file)) < 0) {
flen = 0;
}
if (flen > MAX_STATUS_SIZE) {
usable_len = MAX_STATUS_SIZE;
srv_truncated_status_writes++;
} else {
usable_len = flen;
}
/* allocate buffer for the string, and
read the contents of the temporary file */
if (!(str = (char*) my_malloc(usable_len + 1, MYF(0)))) {
mutex_exit(&srv_monitor_file_mutex);
DBUG_RETURN(1);
}
rewind(srv_monitor_file);
if (flen < MAX_STATUS_SIZE) {
/* Display the entire output. */
flen = fread(str, 1, flen, srv_monitor_file);
} else if (trx_list_end < (ulint) flen
&& trx_list_start < trx_list_end
&& trx_list_start + (flen - trx_list_end)
< MAX_STATUS_SIZE - sizeof truncated_msg - 1) {
/* Omit the beginning of the list of active transactions. */
ssize_t len = fread(str, 1, trx_list_start, srv_monitor_file);
memcpy(str + len, truncated_msg, sizeof truncated_msg - 1);
len += sizeof truncated_msg - 1;
usable_len = (MAX_STATUS_SIZE - 1) - len;
fseek(srv_monitor_file,
static_cast<long>(flen - usable_len), SEEK_SET);
len += fread(str + len, 1, usable_len, srv_monitor_file);
flen = len;
} else {
/* Omit the end of the output. */
flen = fread(str, 1, MAX_STATUS_SIZE - 1, srv_monitor_file);
}
mutex_exit(&srv_monitor_file_mutex);
ret_val= stat_print(
thd, innobase_hton_name,
static_cast<uint>(strlen(innobase_hton_name)),
STRING_WITH_LEN(""), str, static_cast<uint>(flen));
my_free(str);
DBUG_RETURN(ret_val);
}
/************************************************************************//**
Implements the SHOW MUTEX STATUS command.
@return 0 on success. */
static
int
innodb_mutex_show_status(
/*=====================*/
handlerton* hton, /*!< in: the innodb handlerton */
THD* thd, /*!< in: the MySQL query thread of the
caller */
stat_print_fn* stat_print) /*!< in: function for printing
statistics */
{
char buf1[IO_SIZE];
char buf2[IO_SIZE];
ib_mutex_t* mutex;
rw_lock_t* lock;
ulint block_mutex_oswait_count = 0;
ulint block_lock_oswait_count = 0;
ib_mutex_t* block_mutex = NULL;
rw_lock_t* block_lock = NULL;
#ifdef UNIV_DEBUG
ulint rw_lock_count= 0;
ulint rw_lock_count_spin_loop= 0;
ulint rw_lock_count_spin_rounds= 0;
ulint rw_lock_count_os_wait= 0;
ulint rw_lock_count_os_yield= 0;
ulonglong rw_lock_wait_time= 0;
#endif /* UNIV_DEBUG */
uint buf1len;
uint buf2len;
uint hton_name_len;
hton_name_len = (uint) strlen(innobase_hton_name);
DBUG_ENTER("innodb_mutex_show_status");
DBUG_ASSERT(hton == innodb_hton_ptr);
mutex_enter(&mutex_list_mutex);
for (mutex = UT_LIST_GET_FIRST(mutex_list); mutex != NULL;
mutex = UT_LIST_GET_NEXT(list, mutex)) {
if (mutex->count_os_wait == 0) {
continue;
}
if (buf_pool_is_block_mutex(mutex)) {
block_mutex = mutex;
block_mutex_oswait_count += mutex->count_os_wait;
continue;
}
buf1len= (uint) my_snprintf(buf1, sizeof(buf1), "%s:%lu",
innobase_basename(mutex->cfile_name),
(ulong) mutex->cline);
buf2len= (uint) my_snprintf(buf2, sizeof(buf2), "os_waits=%lu",
(ulong) mutex->count_os_wait);
if (stat_print(thd, innobase_hton_name,
hton_name_len, buf1, buf1len,
buf2, buf2len)) {
mutex_exit(&mutex_list_mutex);
DBUG_RETURN(1);
}
}
if (block_mutex) {
buf1len = (uint) my_snprintf(buf1, sizeof buf1,
"combined %s:%lu",
innobase_basename(
block_mutex->cfile_name),
(ulong) block_mutex->cline);
buf2len = (uint) my_snprintf(buf2, sizeof buf2,
"os_waits=%lu",
(ulong) block_mutex_oswait_count);
if (stat_print(thd, innobase_hton_name,
hton_name_len, buf1, buf1len,
buf2, buf2len)) {
mutex_exit(&mutex_list_mutex);
DBUG_RETURN(1);
}
}
mutex_exit(&mutex_list_mutex);
mutex_enter(&rw_lock_list_mutex);
for (lock = UT_LIST_GET_FIRST(rw_lock_list); lock != NULL;
lock = UT_LIST_GET_NEXT(list, lock)) {
if (lock->count_os_wait == 0) {
continue;
}
if (buf_pool_is_block_lock(lock)) {
block_lock = lock;
block_lock_oswait_count += lock->count_os_wait;
continue;
}
buf1len = (uint) my_snprintf(
buf1, sizeof buf1, "%s:%lu",
innobase_basename(lock->cfile_name),
static_cast<ulong>(lock->cline));
buf2len = (uint) my_snprintf(
buf2, sizeof buf2, "os_waits=%lu",
static_cast<ulong>(lock->count_os_wait));
if (stat_print(thd, innobase_hton_name,
hton_name_len, buf1, buf1len,
buf2, buf2len)) {
mutex_exit(&rw_lock_list_mutex);
DBUG_RETURN(1);
}
}
if (block_lock) {
buf1len = (uint) my_snprintf(buf1, sizeof buf1,
"combined %s:%lu",
innobase_basename(
block_lock->cfile_name),
(ulong) block_lock->cline);
buf2len = (uint) my_snprintf(buf2, sizeof buf2,
"os_waits=%lu",
(ulong) block_lock_oswait_count);
if (stat_print(thd, innobase_hton_name,
hton_name_len, buf1, buf1len,
buf2, buf2len)) {
mutex_exit(&rw_lock_list_mutex);
DBUG_RETURN(1);
}
}
mutex_exit(&rw_lock_list_mutex);
#ifdef UNIV_DEBUG
buf2len = static_cast<uint>(my_snprintf(buf2, sizeof buf2,
"count=%lu, spin_waits=%lu, spin_rounds=%lu, "
"os_waits=%lu, os_yields=%lu, os_wait_times=%lu",
(ulong) rw_lock_count,
(ulong) rw_lock_count_spin_loop,
(ulong) rw_lock_count_spin_rounds,
(ulong) rw_lock_count_os_wait,
(ulong) rw_lock_count_os_yield,
(ulong) (rw_lock_wait_time / 1000)));
if (stat_print(thd, innobase_hton_name, hton_name_len,
STRING_WITH_LEN("rw_lock_mutexes"), buf2, buf2len)) {
DBUG_RETURN(1);
}
#endif /* UNIV_DEBUG */
/* Success */
DBUG_RETURN(0);
}
/************************************************************************//**
Return 0 on success and non-zero on failure. Note: the bool return type
seems to be abused here, should be an int. */
static
bool
innobase_show_status(
/*=================*/
handlerton* hton, /*!< in: the innodb handlerton */
THD* thd, /*!< in: the MySQL query thread
of the caller */
stat_print_fn* stat_print,
enum ha_stat_type stat_type)
{
DBUG_ASSERT(hton == innodb_hton_ptr);
switch (stat_type) {
case HA_ENGINE_STATUS:
/* Non-zero return value means there was an error. */
return(innodb_show_status(hton, thd, stat_print) != 0);
case HA_ENGINE_MUTEX:
/* Non-zero return value means there was an error. */
return(innodb_mutex_show_status(hton, thd, stat_print) != 0);
case HA_ENGINE_LOGS:
/* Not handled */
break;
}
/* Success */
return(false);
}
/************************************************************************//**
Handling the shared INNOBASE_SHARE structure that is needed to provide table
locking. Register the table name if it doesn't exist in the hash table. */
static
INNOBASE_SHARE*
get_share(
/*======*/
const char* table_name)
{
INNOBASE_SHARE* share;
mysql_mutex_lock(&innobase_share_mutex);
ulint fold = ut_fold_string(table_name);
HASH_SEARCH(table_name_hash, innobase_open_tables, fold,
INNOBASE_SHARE*, share,
ut_ad(share->use_count > 0),
!strcmp(share->table_name, table_name));
if (!share) {
uint length = (uint) strlen(table_name);
/* TODO: invoke HASH_MIGRATE if innobase_open_tables
grows too big */
share = (INNOBASE_SHARE*) my_malloc(sizeof(*share)+length+1,
MYF(MY_FAE | MY_ZEROFILL));
share->table_name = (char*) memcpy(share + 1,
table_name, length + 1);
HASH_INSERT(INNOBASE_SHARE, table_name_hash,
innobase_open_tables, fold, share);
thr_lock_init(&share->lock);
/* Index translation table initialization */
share->idx_trans_tbl.index_mapping = NULL;
share->idx_trans_tbl.index_count = 0;
share->idx_trans_tbl.array_size = 0;
}
share->use_count++;
mysql_mutex_unlock(&innobase_share_mutex);
return(share);
}
/************************************************************************//**
Free the shared object that was registered with get_share(). */
static
void
free_share(
/*=======*/
INNOBASE_SHARE* share) /*!< in/own: table share to free */
{
mysql_mutex_lock(&innobase_share_mutex);
#ifdef UNIV_DEBUG
INNOBASE_SHARE* share2;
ulint fold = ut_fold_string(share->table_name);
HASH_SEARCH(table_name_hash, innobase_open_tables, fold,
INNOBASE_SHARE*, share2,
ut_ad(share->use_count > 0),
!strcmp(share->table_name, share2->table_name));
ut_a(share2 == share);
#endif /* UNIV_DEBUG */
if (!--share->use_count) {
ulint fold = ut_fold_string(share->table_name);
HASH_DELETE(INNOBASE_SHARE, table_name_hash,
innobase_open_tables, fold, share);
thr_lock_delete(&share->lock);
/* Free any memory from index translation table */
my_free(share->idx_trans_tbl.index_mapping);
my_free(share);
/* TODO: invoke HASH_MIGRATE if innobase_open_tables
shrinks too much */
}
mysql_mutex_unlock(&innobase_share_mutex);
}
/*****************************************************************//**
Converts a MySQL table lock stored in the 'lock' field of the handle to
a proper type before storing pointer to the lock into an array of pointers.
MySQL also calls this if it wants to reset some table locks to a not-locked
state during the processing of an SQL query. An example is that during a
SELECT the read lock is released early on the 'const' tables where we only
fetch one row. MySQL does not call this when it releases all locks at the
end of an SQL statement.
@return pointer to the next element in the 'to' array */
UNIV_INTERN
THR_LOCK_DATA**
ha_innobase::store_lock(
/*====================*/
THD* thd, /*!< in: user thread handle */
THR_LOCK_DATA** to, /*!< in: pointer to an array
of pointers to lock structs;
pointer to the 'lock' field
of current handle is stored
next to this array */
enum thr_lock_type lock_type) /*!< in: lock type to store in
'lock'; this may also be
TL_IGNORE */
{
trx_t* trx;
/* Note that trx in this function is NOT necessarily prebuilt->trx
because we call update_thd() later, in ::external_lock()! Failure to
understand this caused a serious memory corruption bug in 5.1.11. */
trx = check_trx_exists(thd);
/* NOTE: MySQL can call this function with lock 'type' TL_IGNORE!
Be careful to ignore TL_IGNORE if we are going to do something with
only 'real' locks! */
/* If no MySQL table is in use, we need to set the isolation level
of the transaction. */
if (lock_type != TL_IGNORE
&& trx->n_mysql_tables_in_use == 0) {
trx->isolation_level = innobase_map_isolation_level(
(enum_tx_isolation) thd_tx_isolation(thd));
if (trx->isolation_level <= TRX_ISO_READ_COMMITTED
&& trx->global_read_view) {
/* At low transaction isolation levels we let
each consistent read set its own snapshot */
read_view_close_for_mysql(trx);
}
}
DBUG_ASSERT(EQ_CURRENT_THD(thd));
const bool in_lock_tables = thd_in_lock_tables(thd);
const uint sql_command = thd_sql_command(thd);
if (srv_read_only_mode
&& (sql_command == SQLCOM_UPDATE
|| sql_command == SQLCOM_INSERT
|| sql_command == SQLCOM_REPLACE
|| sql_command == SQLCOM_DROP_TABLE
|| sql_command == SQLCOM_ALTER_TABLE
|| sql_command == SQLCOM_OPTIMIZE
|| (sql_command == SQLCOM_CREATE_TABLE
&& (lock_type >= TL_WRITE_CONCURRENT_INSERT
&& lock_type <= TL_WRITE))
|| sql_command == SQLCOM_CREATE_INDEX
|| sql_command == SQLCOM_DROP_INDEX
|| sql_command == SQLCOM_DELETE)) {
ib_senderrf(trx->mysql_thd,
IB_LOG_LEVEL_WARN, ER_READ_ONLY_MODE);
} else if (sql_command == SQLCOM_FLUSH
&& lock_type == TL_READ_NO_INSERT) {
/* Check for FLUSH TABLES ... WITH READ LOCK */
/* Note: This call can fail, but there is no way to return
the error to the caller. We simply ignore it for now here
and push the error code to the caller where the error is
detected in the function. */
dberr_t err = row_quiesce_set_state(
prebuilt->table, QUIESCE_START, trx);
ut_a(err == DB_SUCCESS || err == DB_UNSUPPORTED);
if (trx->isolation_level == TRX_ISO_SERIALIZABLE) {
prebuilt->select_lock_type = LOCK_S;
prebuilt->stored_select_lock_type = LOCK_S;
} else {
prebuilt->select_lock_type = LOCK_NONE;
prebuilt->stored_select_lock_type = LOCK_NONE;
}
/* Check for DROP TABLE */
} else if (sql_command == SQLCOM_DROP_TABLE) {
/* MySQL calls this function in DROP TABLE though this table
handle may belong to another thd that is running a query. Let
us in that case skip any changes to the prebuilt struct. */
/* Check for LOCK TABLE t1,...,tn WITH SHARED LOCKS */
} else if ((lock_type == TL_READ && in_lock_tables)
|| (lock_type == TL_READ_HIGH_PRIORITY && in_lock_tables)
|| lock_type == TL_READ_WITH_SHARED_LOCKS
|| lock_type == TL_READ_NO_INSERT
|| (lock_type != TL_IGNORE
&& sql_command != SQLCOM_SELECT)) {
/* The OR cases above are in this order:
1) MySQL is doing LOCK TABLES ... READ LOCAL, or we
are processing a stored procedure or function, or
2) (we do not know when TL_READ_HIGH_PRIORITY is used), or
3) this is a SELECT ... IN SHARE MODE, or
4) we are doing a complex SQL statement like
INSERT INTO ... SELECT ... and the logical logging (MySQL
binlog) requires the use of a locking read, or
MySQL is doing LOCK TABLES ... READ.
5) we let InnoDB do locking reads for all SQL statements that
are not simple SELECTs; note that select_lock_type in this
case may get strengthened in ::external_lock() to LOCK_X.
Note that we MUST use a locking read in all data modifying
SQL statements, because otherwise the execution would not be
serializable, and also the results from the update could be
unexpected if an obsolete consistent read view would be
used. */
/* Use consistent read for checksum table */
if (sql_command == SQLCOM_CHECKSUM
|| ((srv_locks_unsafe_for_binlog
|| trx->isolation_level <= TRX_ISO_READ_COMMITTED)
&& trx->isolation_level != TRX_ISO_SERIALIZABLE
&& (lock_type == TL_READ
|| lock_type == TL_READ_NO_INSERT)
&& (sql_command == SQLCOM_INSERT_SELECT
|| sql_command == SQLCOM_REPLACE_SELECT
|| sql_command == SQLCOM_UPDATE
|| sql_command == SQLCOM_CREATE_TABLE))) {
/* If we either have innobase_locks_unsafe_for_binlog
option set or this session is using READ COMMITTED
isolation level and isolation level of the transaction
is not set to serializable and MySQL is doing
INSERT INTO...SELECT or REPLACE INTO...SELECT
or UPDATE ... = (SELECT ...) or CREATE ...
SELECT... without FOR UPDATE or IN SHARE
MODE in select, then we use consistent read
for select. */
prebuilt->select_lock_type = LOCK_NONE;
prebuilt->stored_select_lock_type = LOCK_NONE;
} else {
prebuilt->select_lock_type = LOCK_S;
prebuilt->stored_select_lock_type = LOCK_S;
}
} else if (lock_type != TL_IGNORE) {
/* We set possible LOCK_X value in external_lock, not yet
here even if this would be SELECT ... FOR UPDATE */
prebuilt->select_lock_type = LOCK_NONE;
prebuilt->stored_select_lock_type = LOCK_NONE;
}
if (lock_type != TL_IGNORE && lock.type == TL_UNLOCK) {
/* Starting from 5.0.7, we weaken also the table locks
set at the start of a MySQL stored procedure call, just like
we weaken the locks set at the start of an SQL statement.
MySQL does set in_lock_tables TRUE there, but in reality
we do not need table locks to make the execution of a
single transaction stored procedure call deterministic
(if it does not use a consistent read). */
if (lock_type == TL_READ
&& sql_command == SQLCOM_LOCK_TABLES) {
/* We come here if MySQL is processing LOCK TABLES
... READ LOCAL. MyISAM under that table lock type
reads the table as it was at the time the lock was
granted (new inserts are allowed, but not seen by the
reader). To get a similar effect on an InnoDB table,
we must use LOCK TABLES ... READ. We convert the lock
type here, so that for InnoDB, READ LOCAL is
equivalent to READ. This will change the InnoDB
behavior in mysqldump, so that dumps of InnoDB tables
are consistent with dumps of MyISAM tables. */
lock_type = TL_READ_NO_INSERT;
}
/* If we are not doing a LOCK TABLE, DISCARD/IMPORT
TABLESPACE or TRUNCATE TABLE then allow multiple
writers. Note that ALTER TABLE uses a TL_WRITE_ALLOW_READ
< TL_WRITE_CONCURRENT_INSERT.
We especially allow multiple writers if MySQL is at the
start of a stored procedure call (SQLCOM_CALL) or a
stored function call (MySQL does have in_lock_tables
TRUE there). */
if ((lock_type >= TL_WRITE_CONCURRENT_INSERT
&& lock_type <= TL_WRITE)
&& !(in_lock_tables
&& sql_command == SQLCOM_LOCK_TABLES)
&& !thd_tablespace_op(thd)
&& sql_command != SQLCOM_TRUNCATE
&& sql_command != SQLCOM_OPTIMIZE
&& sql_command != SQLCOM_CREATE_TABLE) {
lock_type = TL_WRITE_ALLOW_WRITE;
}
/* In queries of type INSERT INTO t1 SELECT ... FROM t2 ...
MySQL would use the lock TL_READ_NO_INSERT on t2, and that
would conflict with TL_WRITE_ALLOW_WRITE, blocking all inserts
to t2. Convert the lock to a normal read lock to allow
concurrent inserts to t2.
We especially allow concurrent inserts if MySQL is at the
start of a stored procedure call (SQLCOM_CALL)
(MySQL does have thd_in_lock_tables() TRUE there). */
if (lock_type == TL_READ_NO_INSERT
&& sql_command != SQLCOM_LOCK_TABLES) {
lock_type = TL_READ;
}
lock.type = lock_type;
}
*to++= &lock;
if (!trx_is_started(trx)
&& (prebuilt->select_lock_type != LOCK_NONE
|| prebuilt->stored_select_lock_type != LOCK_NONE)) {
++trx->will_lock;
}
return(to);
}
/*********************************************************************//**
Read the next autoinc value. Acquire the relevant locks before reading
the AUTOINC value. If SUCCESS then the table AUTOINC mutex will be locked
on return and all relevant locks acquired.
@return DB_SUCCESS or error code */
UNIV_INTERN
dberr_t
ha_innobase::innobase_get_autoinc(
/*==============================*/
ulonglong* value) /*!< out: autoinc value */
{
*value = 0;
prebuilt->autoinc_error = innobase_lock_autoinc();
if (prebuilt->autoinc_error == DB_SUCCESS) {
/* Determine the first value of the interval */
*value = dict_table_autoinc_read(prebuilt->table);
/* It should have been initialized during open. */
if (*value == 0) {
prebuilt->autoinc_error = DB_UNSUPPORTED;
dict_table_autoinc_unlock(prebuilt->table);
}
}
return(prebuilt->autoinc_error);
}
/*******************************************************************//**
This function reads the global auto-inc counter. It doesn't use the
AUTOINC lock even if the lock mode is set to TRADITIONAL.
@return the autoinc value */
UNIV_INTERN
ulonglong
ha_innobase::innobase_peek_autoinc(void)
/*====================================*/
{
ulonglong auto_inc;
dict_table_t* innodb_table;
ut_a(prebuilt != NULL);
ut_a(prebuilt->table != NULL);
innodb_table = prebuilt->table;
dict_table_autoinc_lock(innodb_table);
auto_inc = dict_table_autoinc_read(innodb_table);
if (auto_inc == 0) {
ut_print_timestamp(stderr);
fprintf(stderr, " InnoDB: AUTOINC next value generation "
"is disabled for '%s'\n", innodb_table->name);
}
dict_table_autoinc_unlock(innodb_table);
return(auto_inc);
}
/*********************************************************************//**
Returns the value of the auto-inc counter in *first_value and ~0 on failure. */
UNIV_INTERN
void
ha_innobase::get_auto_increment(
/*============================*/
ulonglong offset, /*!< in: table autoinc offset */
ulonglong increment, /*!< in: table autoinc
increment */
ulonglong nb_desired_values, /*!< in: number of values
reqd */
ulonglong* first_value, /*!< out: the autoinc value */
ulonglong* nb_reserved_values) /*!< out: count of reserved
values */
{
trx_t* trx;
dberr_t error;
ulonglong autoinc = 0;
/* Prepare prebuilt->trx in the table handle */
update_thd(ha_thd());
error = innobase_get_autoinc(&autoinc);
if (error != DB_SUCCESS) {
*first_value = (~(ulonglong) 0);
return;
}
/* This is a hack, since nb_desired_values seems to be accurate only
for the first call to get_auto_increment() for multi-row INSERT and
meaningless for other statements e.g, LOAD etc. Subsequent calls to
this method for the same statement results in different values which
don't make sense. Therefore we store the value the first time we are
called and count down from that as rows are written (see write_row()).
*/
trx = prebuilt->trx;
/* Note: We can't rely on *first_value since some MySQL engines,
in particular the partition engine, don't initialize it to 0 when
invoking this method. So we are not sure if it's guaranteed to
be 0 or not. */
/* We need the upper limit of the col type to check for
whether we update the table autoinc counter or not. */
ulonglong col_max_value = innobase_get_int_col_max_value(
table->next_number_field);
/* Called for the first time ? */
if (trx->n_autoinc_rows == 0) {
trx->n_autoinc_rows = (ulint) nb_desired_values;
/* It's possible for nb_desired_values to be 0:
e.g., INSERT INTO T1(C) SELECT C FROM T2; */
if (nb_desired_values == 0) {
trx->n_autoinc_rows = 1;
}
set_if_bigger(*first_value, autoinc);
/* Not in the middle of a mult-row INSERT. */
} else if (prebuilt->autoinc_last_value == 0) {
set_if_bigger(*first_value, autoinc);
/* Check for -ve values. */
} else if (*first_value > col_max_value && trx->n_autoinc_rows > 0) {
/* Set to next logical value. */
ut_a(autoinc > trx->n_autoinc_rows);
*first_value = (autoinc - trx->n_autoinc_rows) - 1;
}
*nb_reserved_values = trx->n_autoinc_rows;
/* With old style AUTOINC locking we only update the table's
AUTOINC counter after attempting to insert the row. */
if (innobase_autoinc_lock_mode != AUTOINC_OLD_STYLE_LOCKING) {
ulonglong current;
ulonglong next_value;
current = *first_value > col_max_value ? autoinc : *first_value;
/* If the increment step of the auto increment column
decreases then it is not affecting the immediate
next value in the series. */
if (prebuilt->autoinc_increment > increment) {
current = autoinc - prebuilt->autoinc_increment;
current = innobase_next_autoinc(
current, 1, increment, 1, col_max_value);
dict_table_autoinc_initialize(prebuilt->table, current);
*first_value = current;
}
/* Compute the last value in the interval */
next_value = innobase_next_autoinc(
current, *nb_reserved_values, increment, offset,
col_max_value);
prebuilt->autoinc_last_value = next_value;
if (prebuilt->autoinc_last_value < *first_value) {
*first_value = (~(ulonglong) 0);
} else {
/* Update the table autoinc variable */
dict_table_autoinc_update_if_greater(
prebuilt->table, prebuilt->autoinc_last_value);
}
} else {
/* This will force write_row() into attempting an update
of the table's AUTOINC counter. */
prebuilt->autoinc_last_value = 0;
}
/* The increment to be used to increase the AUTOINC value, we use
this in write_row() and update_row() to increase the autoinc counter
for columns that are filled by the user. We need the offset and
the increment. */
prebuilt->autoinc_offset = offset;
prebuilt->autoinc_increment = increment;
dict_table_autoinc_unlock(prebuilt->table);
}
/*******************************************************************//**
Reset the auto-increment counter to the given value, i.e. the next row
inserted will get the given value. This is called e.g. after TRUNCATE
is emulated by doing a 'DELETE FROM t'. HA_ERR_WRONG_COMMAND is
returned by storage engines that don't support this operation.
@return 0 or error code */
UNIV_INTERN
int
ha_innobase::reset_auto_increment(
/*==============================*/
ulonglong value) /*!< in: new value for table autoinc */
{
DBUG_ENTER("ha_innobase::reset_auto_increment");
dberr_t error;
update_thd(ha_thd());
error = row_lock_table_autoinc_for_mysql(prebuilt);
if (error != DB_SUCCESS) {
DBUG_RETURN(convert_error_code_to_mysql(
error, prebuilt->table->flags, user_thd));
}
/* The next value can never be 0. */
if (value == 0) {
value = 1;
}
innobase_reset_autoinc(value);
DBUG_RETURN(0);
}
/*******************************************************************//**
See comment in handler.cc */
UNIV_INTERN
bool
ha_innobase::get_error_message(
/*===========================*/
int error,
String* buf)
{
trx_t* trx = check_trx_exists(ha_thd());
buf->copy(trx->detailed_error, (uint) strlen(trx->detailed_error),
system_charset_info);
return(FALSE);
}
/*******************************************************************//**
Retrieves the names of the table and the key for which there was a
duplicate entry in the case of HA_ERR_FOREIGN_DUPLICATE_KEY.
If any of the names is not available, then this method will return
false and will not change any of child_table_name or child_key_name.
@param child_table_name[out] Table name
@param child_table_name_len[in] Table name buffer size
@param child_key_name[out] Key name
@param child_key_name_len[in] Key name buffer size
@retval true table and key names were available
and were written into the corresponding
out parameters.
@retval false table and key names were not available,
the out parameters were not touched.
*/
bool
ha_innobase::get_foreign_dup_key(
/*=============================*/
char* child_table_name,
uint child_table_name_len,
char* child_key_name,
uint child_key_name_len)
{
const dict_index_t* err_index;
ut_a(prebuilt->trx != NULL);
ut_a(prebuilt->trx->magic_n == TRX_MAGIC_N);
err_index = trx_get_error_info(prebuilt->trx);
if (err_index == NULL) {
return(false);
}
/* else */
/* copy table name (and convert from filename-safe encoding to
system_charset_info) */
char* p;
p = strchr(err_index->table->name, '/');
/* strip ".../" prefix if any */
if (p != NULL) {
p++;
} else {
p = err_index->table->name;
}
uint len;
len = filename_to_tablename(p, child_table_name, child_table_name_len);
child_table_name[len] = '\0';
/* copy index name */
ut_snprintf(child_key_name, child_key_name_len, "%s", err_index->name);
return(true);
}
/*******************************************************************//**
Compares two 'refs'. A 'ref' is the (internal) primary key value of the row.
If there is no explicitly declared non-null unique key or a primary key, then
InnoDB internally uses the row id as the primary key.
@return < 0 if ref1 < ref2, 0 if equal, else > 0 */
UNIV_INTERN
int
ha_innobase::cmp_ref(
/*=================*/
const uchar* ref1, /*!< in: an (internal) primary key value in the
MySQL key value format */
const uchar* ref2) /*!< in: an (internal) primary key value in the
MySQL key value format */
{
enum_field_types mysql_type;
Field* field;
KEY_PART_INFO* key_part;
KEY_PART_INFO* key_part_end;
uint len1;
uint len2;
int result;
if (prebuilt->clust_index_was_generated) {
/* The 'ref' is an InnoDB row id */
return(memcmp(ref1, ref2, DATA_ROW_ID_LEN));
}
/* Do a type-aware comparison of primary key fields. PK fields
are always NOT NULL, so no checks for NULL are performed. */
key_part = table->key_info[table->s->primary_key].key_part;
key_part_end = key_part
+ table->key_info[table->s->primary_key].user_defined_key_parts;
for (; key_part != key_part_end; ++key_part) {
field = key_part->field;
mysql_type = field->type();
if (mysql_type == MYSQL_TYPE_TINY_BLOB
|| mysql_type == MYSQL_TYPE_MEDIUM_BLOB
|| mysql_type == MYSQL_TYPE_BLOB
|| mysql_type == MYSQL_TYPE_LONG_BLOB) {
/* In the MySQL key value format, a column prefix of
a BLOB is preceded by a 2-byte length field */
len1 = innobase_read_from_2_little_endian(ref1);
len2 = innobase_read_from_2_little_endian(ref2);
result = ((Field_blob*) field)->cmp(
ref1 + 2, len1, ref2 + 2, len2);
} else {
result = field->key_cmp(ref1, ref2);
}
if (result) {
return(result);
}
ref1 += key_part->store_length;
ref2 += key_part->store_length;
}
return(0);
}
/*******************************************************************//**
Ask InnoDB if a query to a table can be cached.
@return TRUE if query caching of the table is permitted */
UNIV_INTERN
my_bool
ha_innobase::register_query_cache_table(
/*====================================*/
THD* thd, /*!< in: user thread handle */
char* table_key, /*!< in: normalized path to the
table */
uint key_length, /*!< in: length of the normalized
path to the table */
qc_engine_callback*
call_back, /*!< out: pointer to function for
checking if query caching
is permitted */
ulonglong *engine_data) /*!< in/out: data to call_back */
{
*call_back = innobase_query_caching_of_table_permitted;
*engine_data = 0;
return(innobase_query_caching_of_table_permitted(thd, table_key,
key_length,
engine_data));
}
/*******************************************************************//**
Get the bin log name. */
UNIV_INTERN
const char*
ha_innobase::get_mysql_bin_log_name()
/*=================================*/
{
return(trx_sys_mysql_bin_log_name);
}
/*******************************************************************//**
Get the bin log offset (or file position). */
UNIV_INTERN
ulonglong
ha_innobase::get_mysql_bin_log_pos()
/*================================*/
{
/* trx... is ib_int64_t, which is a typedef for a 64-bit integer
(__int64 or longlong) so it's ok to cast it to ulonglong. */
return(trx_sys_mysql_bin_log_pos);
}
/******************************************************************//**
This function is used to find the storage length in bytes of the first n
characters for prefix indexes using a multibyte character set. The function
finds charset information and returns length of prefix_len characters in the
index field in bytes.
@return number of bytes occupied by the first n characters */
UNIV_INTERN
ulint
innobase_get_at_most_n_mbchars(
/*===========================*/
ulint charset_id, /*!< in: character set id */
ulint prefix_len, /*!< in: prefix length in bytes of the index
(this has to be divided by mbmaxlen to get the
number of CHARACTERS n in the prefix) */
ulint data_len, /*!< in: length of the string in bytes */
const char* str) /*!< in: character string */
{
ulint char_length; /*!< character length in bytes */
ulint n_chars; /*!< number of characters in prefix */
CHARSET_INFO* charset; /*!< charset used in the field */
charset = get_charset((uint) charset_id, MYF(MY_WME));
ut_ad(charset);
ut_ad(charset->mbmaxlen);
/* Calculate how many characters at most the prefix index contains */
n_chars = prefix_len / charset->mbmaxlen;
/* If the charset is multi-byte, then we must find the length of the
first at most n chars in the string. If the string contains less
characters than n, then we return the length to the end of the last
character. */
if (charset->mbmaxlen > 1) {
/* my_charpos() returns the byte length of the first n_chars
characters, or a value bigger than the length of str, if
there were not enough full characters in str.
Why does the code below work:
Suppose that we are looking for n UTF-8 characters.
1) If the string is long enough, then the prefix contains at
least n complete UTF-8 characters + maybe some extra
characters + an incomplete UTF-8 character. No problem in
this case. The function returns the pointer to the
end of the nth character.
2) If the string is not long enough, then the string contains
the complete value of a column, that is, only complete UTF-8
characters, and we can store in the column prefix index the
whole string. */
char_length = my_charpos(charset, str,
str + data_len, (int) n_chars);
if (char_length > data_len) {
char_length = data_len;
}
} else {
if (data_len < prefix_len) {
char_length = data_len;
} else {
char_length = prefix_len;
}
}
return(char_length);
}
/*******************************************************************//**
This function is used to prepare an X/Open XA distributed transaction.
@return 0 or error number */
static
int
innobase_xa_prepare(
/*================*/
handlerton* hton, /*!< in: InnoDB handlerton */
THD* thd, /*!< in: handle to the MySQL thread of
the user whose XA transaction should
be prepared */
bool prepare_trx) /*!< in: true - prepare transaction
false - the current SQL statement
ended */
{
int error = 0;
trx_t* trx = check_trx_exists(thd);
DBUG_ASSERT(hton == innodb_hton_ptr);
/* we use support_xa value as it was seen at transaction start
time, not the current session variable value. Any possible changes
to the session variable take effect only in the next transaction */
if (!trx->support_xa) {
return(0);
}
thd_get_xid(thd, (MYSQL_XID*) &trx->xid);
/* Release a possible FIFO ticket and search latch. Since we will
reserve the trx_sys->mutex, we have to release the search system
latch first to obey the latching order. */
trx_search_latch_release_if_reserved(trx);
innobase_srv_conc_force_exit_innodb(trx);
if (!trx_is_registered_for_2pc(trx) && trx_is_started(trx)) {
sql_print_error("Transaction not registered for MySQL 2PC, "
"but transaction is active");
}
if (prepare_trx
|| (!thd_test_options(thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN))) {
/* We were instructed to prepare the whole transaction, or
this is an SQL statement end and autocommit is on */
ut_ad(trx_is_registered_for_2pc(trx));
trx_prepare_for_mysql(trx);
error = 0;
} else {
/* We just mark the SQL statement ended and do not do a
transaction prepare */
/* If we had reserved the auto-inc lock for some
table in this SQL statement we release it now */
lock_unlock_table_autoinc(trx);
/* Store the current undo_no of the transaction so that we
know where to roll back if we have to roll back the next
SQL statement */
trx_mark_sql_stat_end(trx);
}
if (thd_sql_command(thd) != SQLCOM_XA_PREPARE
&& (prepare_trx
|| !thd_test_options(
thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN))) {
/* For mysqlbackup to work the order of transactions in binlog
and InnoDB must be the same. Consider the situation
thread1> prepare; write to binlog; ...
<context switch>
thread2> prepare; write to binlog; commit
thread1> ... commit
The server guarantees that writes to the binary log
and commits are in the same order, so we do not have
to handle this case. */
}
return(error);
}
/*******************************************************************//**
This function is used to recover X/Open XA distributed transactions.
@return number of prepared transactions stored in xid_list */
static
int
innobase_xa_recover(
/*================*/
handlerton* hton, /*!< in: InnoDB handlerton */
XID* xid_list,/*!< in/out: prepared transactions */
uint len) /*!< in: number of slots in xid_list */
{
DBUG_ASSERT(hton == innodb_hton_ptr);
if (len == 0 || xid_list == NULL) {
return(0);
}
return(trx_recover_for_mysql(xid_list, len));
}
/*******************************************************************//**
This function is used to commit one X/Open XA distributed transaction
which is in the prepared state
@return 0 or error number */
static
int
innobase_commit_by_xid(
/*===================*/
handlerton* hton,
XID* xid) /*!< in: X/Open XA transaction identification */
{
trx_t* trx;
DBUG_ASSERT(hton == innodb_hton_ptr);
trx = trx_get_trx_by_xid(xid);
if (trx) {
innobase_commit_low(trx);
trx_free_for_background(trx);
return(XA_OK);
} else {
return(XAER_NOTA);
}
}
/*******************************************************************//**
This function is used to rollback one X/Open XA distributed transaction
which is in the prepared state
@return 0 or error number */
static
int
innobase_rollback_by_xid(
/*=====================*/
handlerton* hton, /*!< in: InnoDB handlerton */
XID* xid) /*!< in: X/Open XA transaction
identification */
{
trx_t* trx;
DBUG_ASSERT(hton == innodb_hton_ptr);
trx = trx_get_trx_by_xid(xid);
if (trx) {
int ret = innobase_rollback_trx(trx);
trx_free_for_background(trx);
return(ret);
} else {
return(XAER_NOTA);
}
}
/*******************************************************************//**
Create a consistent view for a cursor based on current transaction
which is created if the corresponding MySQL thread still lacks one.
This consistent view is then used inside of MySQL when accessing records
using a cursor.
@return pointer to cursor view or NULL */
static
void*
innobase_create_cursor_view(
/*========================*/
handlerton* hton, /*!< in: innobase hton */
THD* thd) /*!< in: user thread handle */
{
DBUG_ASSERT(hton == innodb_hton_ptr);
return(read_cursor_view_create_for_mysql(check_trx_exists(thd)));
}
/*******************************************************************//**
Close the given consistent cursor view of a transaction and restore
global read view to a transaction read view. Transaction is created if the
corresponding MySQL thread still lacks one. */
static
void
innobase_close_cursor_view(
/*=======================*/
handlerton* hton, /*!< in: innobase hton */
THD* thd, /*!< in: user thread handle */
void* curview)/*!< in: Consistent read view to be closed */
{
DBUG_ASSERT(hton == innodb_hton_ptr);
read_cursor_view_close_for_mysql(check_trx_exists(thd),
(cursor_view_t*) curview);
}
/*******************************************************************//**
Set the given consistent cursor view to a transaction which is created
if the corresponding MySQL thread still lacks one. If the given
consistent cursor view is NULL global read view of a transaction is
restored to a transaction read view. */
static
void
innobase_set_cursor_view(
/*=====================*/
handlerton* hton, /*!< in: innobase hton */
THD* thd, /*!< in: user thread handle */
void* curview)/*!< in: Consistent cursor view to be set */
{
DBUG_ASSERT(hton == innodb_hton_ptr);
read_cursor_set_for_mysql(check_trx_exists(thd),
(cursor_view_t*) curview);
}
/*******************************************************************//**
*/
UNIV_INTERN
bool
ha_innobase::check_if_incompatible_data(
/*====================================*/
HA_CREATE_INFO* info,
uint table_changes)
{
innobase_copy_frm_flags_from_create_info(prebuilt->table, info);
if (table_changes != IS_EQUAL_YES) {
return(COMPATIBLE_DATA_NO);
}
/* Check that auto_increment value was not changed */
if ((info->used_fields & HA_CREATE_USED_AUTO) &&
info->auto_increment_value != 0) {
return(COMPATIBLE_DATA_NO);
}
/* Check that row format didn't change */
if ((info->used_fields & HA_CREATE_USED_ROW_FORMAT)
&& info->row_type != get_row_type()) {
return(COMPATIBLE_DATA_NO);
}
/* Specifying KEY_BLOCK_SIZE requests a rebuild of the table. */
if (info->used_fields & HA_CREATE_USED_KEY_BLOCK_SIZE) {
return(COMPATIBLE_DATA_NO);
}
return(COMPATIBLE_DATA_YES);
}
/****************************************************************//**
Update the system variable innodb_io_capacity_max using the "saved"
value. This function is registered as a callback with MySQL. */
static
void
innodb_io_capacity_max_update(
/*===========================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to
system variable */
void* var_ptr,/*!< out: where the
formal string goes */
const void* save) /*!< in: immediate result
from check function */
{
ulong in_val = *static_cast<const ulong*>(save);
if (in_val < srv_io_capacity) {
in_val = srv_io_capacity;
push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
ER_WRONG_ARGUMENTS,
"innodb_io_capacity_max cannot be"
" set lower than innodb_io_capacity.");
push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
ER_WRONG_ARGUMENTS,
"Setting innodb_io_capacity_max to %lu",
srv_io_capacity);
}
srv_max_io_capacity = in_val;
}
/****************************************************************//**
Update the system variable innodb_io_capacity using the "saved"
value. This function is registered as a callback with MySQL. */
static
void
innodb_io_capacity_update(
/*======================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to
system variable */
void* var_ptr,/*!< out: where the
formal string goes */
const void* save) /*!< in: immediate result
from check function */
{
ulong in_val = *static_cast<const ulong*>(save);
if (in_val > srv_max_io_capacity) {
in_val = srv_max_io_capacity;
push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
ER_WRONG_ARGUMENTS,
"innodb_io_capacity cannot be set"
" higher than innodb_io_capacity_max.");
push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
ER_WRONG_ARGUMENTS,
"Setting innodb_io_capacity to %lu",
srv_max_io_capacity);
}
srv_io_capacity = in_val;
}
/****************************************************************//**
Update the system variable innodb_max_dirty_pages_pct using the "saved"
value. This function is registered as a callback with MySQL. */
static
void
innodb_max_dirty_pages_pct_update(
/*==============================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to
system variable */
void* var_ptr,/*!< out: where the
formal string goes */
const void* save) /*!< in: immediate result
from check function */
{
ulong in_val = *static_cast<const ulong*>(save);
if (in_val < srv_max_dirty_pages_pct_lwm) {
push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
ER_WRONG_ARGUMENTS,
"innodb_max_dirty_pages_pct cannot be"
" set lower than"
" innodb_max_dirty_pages_pct_lwm.");
push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
ER_WRONG_ARGUMENTS,
"Lowering"
" innodb_max_dirty_page_pct_lwm to %lu",
in_val);
srv_max_dirty_pages_pct_lwm = in_val;
}
srv_max_buf_pool_modified_pct = in_val;
}
/****************************************************************//**
Update the system variable innodb_max_dirty_pages_pct_lwm using the
"saved" value. This function is registered as a callback with MySQL. */
static
void
innodb_max_dirty_pages_pct_lwm_update(
/*==================================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to
system variable */
void* var_ptr,/*!< out: where the
formal string goes */
const void* save) /*!< in: immediate result
from check function */
{
ulong in_val = *static_cast<const ulong*>(save);
if (in_val > srv_max_buf_pool_modified_pct) {
in_val = srv_max_buf_pool_modified_pct;
push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
ER_WRONG_ARGUMENTS,
"innodb_max_dirty_pages_pct_lwm"
" cannot be set higher than"
" innodb_max_dirty_pages_pct.");
push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
ER_WRONG_ARGUMENTS,
"Setting innodb_max_dirty_page_pct_lwm"
" to %lu",
in_val);
}
srv_max_dirty_pages_pct_lwm = in_val;
}
/************************************************************//**
Validate the file format name and return its corresponding id.
@return valid file format id */
static
uint
innobase_file_format_name_lookup(
/*=============================*/
const char* format_name) /*!< in: pointer to file format name */
{
char* endp;
uint format_id;
ut_a(format_name != NULL);
/* The format name can contain the format id itself instead of
the name and we check for that. */
format_id = (uint) strtoul(format_name, &endp, 10);
/* Check for valid parse. */
if (*endp == '\0' && *format_name != '\0') {
if (format_id <= UNIV_FORMAT_MAX) {
return(format_id);
}
} else {
for (format_id = 0; format_id <= UNIV_FORMAT_MAX;
format_id++) {
const char* name;
name = trx_sys_file_format_id_to_name(format_id);
if (!innobase_strcasecmp(format_name, name)) {
return(format_id);
}
}
}
return(UNIV_FORMAT_MAX + 1);
}
/************************************************************//**
Validate the file format check config parameters, as a side effect it
sets the srv_max_file_format_at_startup variable.
@return the format_id if valid config value, otherwise, return -1 */
static
int
innobase_file_format_validate_and_set(
/*==================================*/
const char* format_max) /*!< in: parameter value */
{
uint format_id;
format_id = innobase_file_format_name_lookup(format_max);
if (format_id < UNIV_FORMAT_MAX + 1) {
srv_max_file_format_at_startup = format_id;
return((int) format_id);
} else {
return(-1);
}
}
/*************************************************************//**
Check if it is a valid file format. This function is registered as
a callback with MySQL.
@return 0 for valid file format */
static
int
innodb_file_format_name_validate(
/*=============================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to system
variable */
void* save, /*!< out: immediate result
for update function */
struct st_mysql_value* value) /*!< in: incoming string */
{
const char* file_format_input;
char buff[STRING_BUFFER_USUAL_SIZE];
int len = sizeof(buff);
ut_a(save != NULL);
ut_a(value != NULL);
file_format_input = value->val_str(value, buff, &len);
if (file_format_input != NULL) {
uint format_id;
format_id = innobase_file_format_name_lookup(
file_format_input);
if (format_id <= UNIV_FORMAT_MAX) {
/* Save a pointer to the name in the
'file_format_name_map' constant array. */
*static_cast<const char**>(save) =
trx_sys_file_format_id_to_name(format_id);
return(0);
}
}
*static_cast<const char**>(save) = NULL;
return(1);
}
/****************************************************************//**
Update the system variable innodb_file_format using the "saved"
value. This function is registered as a callback with MySQL. */
static
void
innodb_file_format_name_update(
/*===========================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to
system variable */
void* var_ptr, /*!< out: where the
formal string goes */
const void* save) /*!< in: immediate result
from check function */
{
const char* format_name;
ut_a(var_ptr != NULL);
ut_a(save != NULL);
format_name = *static_cast<const char*const*>(save);
if (format_name) {
uint format_id;
format_id = innobase_file_format_name_lookup(format_name);
if (format_id <= UNIV_FORMAT_MAX) {
srv_file_format = format_id;
}
}
*static_cast<const char**>(var_ptr)
= trx_sys_file_format_id_to_name(srv_file_format);
}
/*************************************************************//**
Check if valid argument to innodb_file_format_max. This function
is registered as a callback with MySQL.
@return 0 for valid file format */
static
int
innodb_file_format_max_validate(
/*============================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to system
variable */
void* save, /*!< out: immediate result
for update function */
struct st_mysql_value* value) /*!< in: incoming string */
{
const char* file_format_input;
char buff[STRING_BUFFER_USUAL_SIZE];
int len = sizeof(buff);
int format_id;
ut_a(save != NULL);
ut_a(value != NULL);
file_format_input = value->val_str(value, buff, &len);
if (file_format_input != NULL) {
format_id = innobase_file_format_validate_and_set(
file_format_input);
if (format_id >= 0) {
/* Save a pointer to the name in the
'file_format_name_map' constant array. */
*static_cast<const char**>(save) =
trx_sys_file_format_id_to_name(
(uint) format_id);
return(0);
} else {
push_warning_printf(thd,
Sql_condition::WARN_LEVEL_WARN,
ER_WRONG_ARGUMENTS,
"InnoDB: invalid innodb_file_format_max "
"value; can be any format up to %s "
"or equivalent id of %d",
trx_sys_file_format_id_to_name(UNIV_FORMAT_MAX),
UNIV_FORMAT_MAX);
}
}
*static_cast<const char**>(save) = NULL;
return(1);
}
/****************************************************************//**
Update the system variable innodb_file_format_max using the "saved"
value. This function is registered as a callback with MySQL. */
static
void
innodb_file_format_max_update(
/*==========================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to
system variable */
void* var_ptr,/*!< out: where the
formal string goes */
const void* save) /*!< in: immediate result
from check function */
{
const char* format_name_in;
const char** format_name_out;
uint format_id;
ut_a(save != NULL);
ut_a(var_ptr != NULL);
format_name_in = *static_cast<const char*const*>(save);
if (!format_name_in) {
return;
}
format_id = innobase_file_format_name_lookup(format_name_in);
if (format_id > UNIV_FORMAT_MAX) {
/* DEFAULT is "on", which is invalid at runtime. */
push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
ER_WRONG_ARGUMENTS,
"Ignoring SET innodb_file_format=%s",
format_name_in);
return;
}
format_name_out = static_cast<const char**>(var_ptr);
/* Update the max format id in the system tablespace. */
if (trx_sys_file_format_max_set(format_id, format_name_out)) {
ut_print_timestamp(stderr);
fprintf(stderr,
" [Info] InnoDB: the file format in the system "
"tablespace is now set to %s.\n", *format_name_out);
}
}
/*************************************************************//**
Check whether valid argument given to innobase_*_stopword_table.
This function is registered as a callback with MySQL.
@return 0 for valid stopword table */
static
int
innodb_stopword_table_validate(
/*===========================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to system
variable */
void* save, /*!< out: immediate result
for update function */
struct st_mysql_value* value) /*!< in: incoming string */
{
const char* stopword_table_name;
char buff[STRING_BUFFER_USUAL_SIZE];
int len = sizeof(buff);
trx_t* trx;
int ret = 1;
ut_a(save != NULL);
ut_a(value != NULL);
stopword_table_name = value->val_str(value, buff, &len);
trx = check_trx_exists(thd);
row_mysql_lock_data_dictionary(trx);
/* Validate the stopword table's (if supplied) existence and
of the right format */
if (!stopword_table_name
|| fts_valid_stopword_table(stopword_table_name)) {
*static_cast<const char**>(save) = stopword_table_name;
ret = 0;
}
row_mysql_unlock_data_dictionary(trx);
return(ret);
}
/*************************************************************//**
Check whether valid argument given to "innodb_fts_internal_tbl_name"
This function is registered as a callback with MySQL.
@return 0 for valid stopword table */
static
int
innodb_internal_table_validate(
/*===========================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to system
variable */
void* save, /*!< out: immediate result
for update function */
struct st_mysql_value* value) /*!< in: incoming string */
{
const char* table_name;
char buff[STRING_BUFFER_USUAL_SIZE];
int len = sizeof(buff);
int ret = 1;
dict_table_t* user_table;
ut_a(save != NULL);
ut_a(value != NULL);
table_name = value->val_str(value, buff, &len);
if (!table_name) {
*static_cast<const char**>(save) = NULL;
return(0);
}
user_table = dict_table_open_on_name(
table_name, FALSE, TRUE, DICT_ERR_IGNORE_NONE);
if (user_table) {
if (dict_table_has_fts_index(user_table)) {
*static_cast<const char**>(save) = table_name;
ret = 0;
}
dict_table_close(user_table, FALSE, TRUE);
DBUG_EXECUTE_IF("innodb_evict_autoinc_table",
mutex_enter(&dict_sys->mutex);
dict_table_remove_from_cache_low(user_table, TRUE);
mutex_exit(&dict_sys->mutex);
);
}
return(ret);
}
/****************************************************************//**
Update global variable "fts_internal_tbl_name" with the "saved"
stopword table name value. This function is registered as a callback
with MySQL. */
static
void
innodb_internal_table_update(
/*=========================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to
system variable */
void* var_ptr,/*!< out: where the
formal string goes */
const void* save) /*!< in: immediate result
from check function */
{
const char* table_name;
char* old;
ut_a(save != NULL);
ut_a(var_ptr != NULL);
table_name = *static_cast<const char*const*>(save);
old = *(char**) var_ptr;
if (table_name) {
*(char**) var_ptr = my_strdup(table_name, MYF(0));
} else {
*(char**) var_ptr = NULL;
}
if (old) {
my_free(old);
}
fts_internal_tbl_name = *(char**) var_ptr;
}
/****************************************************************//**
Update the system variable innodb_adaptive_hash_index using the "saved"
value. This function is registered as a callback with MySQL. */
static
void
innodb_adaptive_hash_index_update(
/*==============================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to
system variable */
void* var_ptr,/*!< out: where the
formal string goes */
const void* save) /*!< in: immediate result
from check function */
{
if (*(my_bool*) save) {
btr_search_enable();
} else {
btr_search_disable();
}
}
/****************************************************************//**
Update the system variable innodb_cmp_per_index using the "saved"
value. This function is registered as a callback with MySQL. */
static
void
innodb_cmp_per_index_update(
/*========================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to
system variable */
void* var_ptr,/*!< out: where the
formal string goes */
const void* save) /*!< in: immediate result
from check function */
{
/* Reset the stats whenever we enable the table
INFORMATION_SCHEMA.innodb_cmp_per_index. */
if (!srv_cmp_per_index_enabled && *(my_bool*) save) {
page_zip_reset_stat_per_index();
}
srv_cmp_per_index_enabled = !!(*(my_bool*) save);
}
/****************************************************************//**
Update the system variable innodb_old_blocks_pct using the "saved"
value. This function is registered as a callback with MySQL. */
static
void
innodb_old_blocks_pct_update(
/*=========================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to
system variable */
void* var_ptr,/*!< out: where the
formal string goes */
const void* save) /*!< in: immediate result
from check function */
{
innobase_old_blocks_pct = static_cast<uint>(
buf_LRU_old_ratio_update(
*static_cast<const uint*>(save), TRUE));
}
/****************************************************************//**
Update the system variable innodb_old_blocks_pct using the "saved"
value. This function is registered as a callback with MySQL. */
static
void
innodb_change_buffer_max_size_update(
/*=================================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to
system variable */
void* var_ptr,/*!< out: where the
formal string goes */
const void* save) /*!< in: immediate result
from check function */
{
innobase_change_buffer_max_size =
(*static_cast<const uint*>(save));
ibuf_max_size_update(innobase_change_buffer_max_size);
}
#ifdef UNIV_DEBUG
ulong srv_fil_make_page_dirty_debug = 0;
ulong srv_saved_page_number_debug = 0;
/****************************************************************//**
Save an InnoDB page number. */
static
void
innodb_save_page_no(
/*================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to
system variable */
void* var_ptr,/*!< out: where the
formal string goes */
const void* save) /*!< in: immediate result
from check function */
{
srv_saved_page_number_debug = *static_cast<const ulong*>(save);
ib_logf(IB_LOG_LEVEL_INFO,
"Saving InnoDB page number: %lu",
srv_saved_page_number_debug);
}
/****************************************************************//**
Make the first page of given user tablespace dirty. */
static
void
innodb_make_page_dirty(
/*===================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to
system variable */
void* var_ptr,/*!< out: where the
formal string goes */
const void* save) /*!< in: immediate result
from check function */
{
mtr_t mtr;
ulong space_id = *static_cast<const ulong*>(save);
mtr_start(&mtr);
buf_block_t* block = buf_page_get(
space_id, 0, srv_saved_page_number_debug, RW_X_LATCH, &mtr);
if (block) {
byte* page = block->frame;
ib_logf(IB_LOG_LEVEL_INFO,
"Dirtying page:%lu of space:%lu",
page_get_page_no(page),
page_get_space_id(page));
mlog_write_ulint(page + FIL_PAGE_TYPE,
fil_page_get_type(page),
MLOG_2BYTES, &mtr);
}
mtr_commit(&mtr);
}
#endif // UNIV_DEBUG
/*************************************************************//**
Find the corresponding ibuf_use_t value that indexes into
innobase_change_buffering_values[] array for the input
change buffering option name.
@return corresponding IBUF_USE_* value for the input variable
name, or IBUF_USE_COUNT if not able to find a match */
static
ibuf_use_t
innodb_find_change_buffering_value(
/*===============================*/
const char* input_name) /*!< in: input change buffering
option name */
{
ulint use;
for (use = 0; use < UT_ARR_SIZE(innobase_change_buffering_values);
use++) {
/* found a match */
if (!innobase_strcasecmp(
input_name, innobase_change_buffering_values[use])) {
return((ibuf_use_t) use);
}
}
/* Did not find any match */
return(IBUF_USE_COUNT);
}
/*************************************************************//**
Check if it is a valid value of innodb_change_buffering. This function is
registered as a callback with MySQL.
@return 0 for valid innodb_change_buffering */
static
int
innodb_change_buffering_validate(
/*=============================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to system
variable */
void* save, /*!< out: immediate result
for update function */
struct st_mysql_value* value) /*!< in: incoming string */
{
const char* change_buffering_input;
char buff[STRING_BUFFER_USUAL_SIZE];
int len = sizeof(buff);
ut_a(save != NULL);
ut_a(value != NULL);
change_buffering_input = value->val_str(value, buff, &len);
if (change_buffering_input != NULL) {
ibuf_use_t use;
use = innodb_find_change_buffering_value(
change_buffering_input);
if (use != IBUF_USE_COUNT) {
/* Find a matching change_buffering option value. */
*static_cast<const char**>(save) =
innobase_change_buffering_values[use];
return(0);
}
}
/* No corresponding change buffering option for user supplied
"change_buffering_input" */
return(1);
}
/****************************************************************//**
Update the system variable innodb_change_buffering using the "saved"
value. This function is registered as a callback with MySQL. */
static
void
innodb_change_buffering_update(
/*===========================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to
system variable */
void* var_ptr,/*!< out: where the
formal string goes */
const void* save) /*!< in: immediate result
from check function */
{
ibuf_use_t use;
ut_a(var_ptr != NULL);
ut_a(save != NULL);
use = innodb_find_change_buffering_value(
*static_cast<const char*const*>(save));
ut_a(use < IBUF_USE_COUNT);
ibuf_use = use;
*static_cast<const char**>(var_ptr) =
*static_cast<const char*const*>(save);
}
/*************************************************************//**
Just emit a warning that the usage of the variable is deprecated.
@return 0 */
static
void
innodb_stats_sample_pages_update(
/*=============================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to
system variable */
void* var_ptr,/*!< out: where the
formal string goes */
const void* save) /*!< in: immediate result
from check function */
{
#define STATS_SAMPLE_PAGES_DEPRECATED_MSG \
"Using innodb_stats_sample_pages is deprecated and " \
"the variable may be removed in future releases. " \
"Please use innodb_stats_transient_sample_pages " \
"instead."
push_warning(thd, Sql_condition::WARN_LEVEL_WARN,
HA_ERR_WRONG_COMMAND, STATS_SAMPLE_PAGES_DEPRECATED_MSG);
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: Warning: %s\n",
STATS_SAMPLE_PAGES_DEPRECATED_MSG);
srv_stats_transient_sample_pages =
*static_cast<const unsigned long long*>(save);
}
/****************************************************************//**
Update the monitor counter according to the "set_option", turn
on/off or reset specified monitor counter. */
static
void
innodb_monitor_set_option(
/*======================*/
const monitor_info_t* monitor_info,/*!< in: monitor info for the monitor
to set */
mon_option_t set_option) /*!< in: Turn on/off reset the
counter */
{
monitor_id_t monitor_id = monitor_info->monitor_id;
/* If module type is MONITOR_GROUP_MODULE, it cannot be
turned on/off individually. It should never use this
function to set options */
ut_a(!(monitor_info->monitor_type & MONITOR_GROUP_MODULE));
switch (set_option) {
case MONITOR_TURN_ON:
MONITOR_ON(monitor_id);
MONITOR_INIT(monitor_id);
MONITOR_SET_START(monitor_id);
/* If the monitor to be turned on uses
exisitng monitor counter (status variable),
make special processing to remember existing
counter value. */
if (monitor_info->monitor_type
& MONITOR_EXISTING) {
srv_mon_process_existing_counter(
monitor_id, MONITOR_TURN_ON);
}
break;
case MONITOR_TURN_OFF:
if (monitor_info->monitor_type & MONITOR_EXISTING) {
srv_mon_process_existing_counter(
monitor_id, MONITOR_TURN_OFF);
}
MONITOR_OFF(monitor_id);
MONITOR_SET_OFF(monitor_id);
break;
case MONITOR_RESET_VALUE:
srv_mon_reset(monitor_id);
break;
case MONITOR_RESET_ALL_VALUE:
srv_mon_reset_all(monitor_id);
break;
default:
ut_error;
}
}
/****************************************************************//**
Find matching InnoDB monitor counters and update their status
according to the "set_option", turn on/off or reset specified
monitor counter. */
static
void
innodb_monitor_update_wildcard(
/*===========================*/
const char* name, /*!< in: monitor name to match */
mon_option_t set_option) /*!< in: the set option, whether
to turn on/off or reset the counter */
{
ut_a(name);
for (ulint use = 0; use < NUM_MONITOR; use++) {
ulint type;
monitor_id_t monitor_id = static_cast<monitor_id_t>(use);
monitor_info_t* monitor_info;
if (!innobase_wildcasecmp(
srv_mon_get_name(monitor_id), name)) {
monitor_info = srv_mon_get_info(monitor_id);
type = monitor_info->monitor_type;
/* If the monitor counter is of MONITOR_MODULE
type, skip it. Except for those also marked with
MONITOR_GROUP_MODULE flag, which can be turned
on only as a module. */
if (!(type & MONITOR_MODULE)
&& !(type & MONITOR_GROUP_MODULE)) {
innodb_monitor_set_option(monitor_info,
set_option);
}
/* Need to special handle counters marked with
MONITOR_GROUP_MODULE, turn on the whole module if
any one of it comes here. Currently, only
"module_buf_page" is marked with MONITOR_GROUP_MODULE */
if (type & MONITOR_GROUP_MODULE) {
if ((monitor_id >= MONITOR_MODULE_BUF_PAGE)
&& (monitor_id < MONITOR_MODULE_OS)) {
if (set_option == MONITOR_TURN_ON
&& MONITOR_IS_ON(
MONITOR_MODULE_BUF_PAGE)) {
continue;
}
srv_mon_set_module_control(
MONITOR_MODULE_BUF_PAGE,
set_option);
} else {
/* If new monitor is added with
MONITOR_GROUP_MODULE, it needs
to be added here. */
ut_ad(0);
}
}
}
}
}
/*************************************************************//**
Given a configuration variable name, find corresponding monitor counter
and return its monitor ID if found.
@return monitor ID if found, MONITOR_NO_MATCH if there is no match */
static
ulint
innodb_monitor_id_by_name_get(
/*==========================*/
const char* name) /*!< in: monitor counter namer */
{
ut_a(name);
/* Search for wild character '%' in the name, if
found, we treat it as a wildcard match. We do not search for
single character wildcard '_' since our monitor names already contain
such character. To avoid confusion, we request user must include
at least one '%' character to activate the wildcard search. */
if (strchr(name, '%')) {
return(MONITOR_WILDCARD_MATCH);
}
/* Not wildcard match, check for an exact match */
for (ulint i = 0; i < NUM_MONITOR; i++) {
if (!innobase_strcasecmp(
name, srv_mon_get_name(static_cast<monitor_id_t>(i)))) {
return(i);
}
}
return(MONITOR_NO_MATCH);
}
/*************************************************************//**
Validate that the passed in monitor name matches at least one
monitor counter name with wildcard compare.
@return TRUE if at least one monitor name matches */
static
ibool
innodb_monitor_validate_wildcard_name(
/*==================================*/
const char* name) /*!< in: monitor counter namer */
{
for (ulint i = 0; i < NUM_MONITOR; i++) {
if (!innobase_wildcasecmp(
srv_mon_get_name(static_cast<monitor_id_t>(i)), name)) {
return(TRUE);
}
}
return(FALSE);
}
/*************************************************************//**
Validate the passed in monitor name, find and save the
corresponding monitor name in the function parameter "save".
@return 0 if monitor name is valid */
static
int
innodb_monitor_valid_byname(
/*========================*/
void* save, /*!< out: immediate result
for update function */
const char* name) /*!< in: incoming monitor name */
{
ulint use;
monitor_info_t* monitor_info;
if (!name) {
return(1);
}
use = innodb_monitor_id_by_name_get(name);
/* No monitor name matches, nor it is wildcard match */
if (use == MONITOR_NO_MATCH) {
return(1);
}
if (use < NUM_MONITOR) {
monitor_info = srv_mon_get_info((monitor_id_t) use);
/* If the monitor counter is marked with
MONITOR_GROUP_MODULE flag, then this counter
cannot be turned on/off individually, instead
it shall be turned on/off as a group using
its module name */
if ((monitor_info->monitor_type & MONITOR_GROUP_MODULE)
&& (!(monitor_info->monitor_type & MONITOR_MODULE))) {
sql_print_warning(
"Monitor counter '%s' cannot"
" be turned on/off individually."
" Please use its module name"
" to turn on/off the counters"
" in the module as a group.\n",
name);
return(1);
}
} else {
ut_a(use == MONITOR_WILDCARD_MATCH);
/* For wildcard match, if there is not a single monitor
counter name that matches, treat it as an invalid
value for the system configuration variables */
if (!innodb_monitor_validate_wildcard_name(name)) {
return(1);
}
}
/* Save the configure name for innodb_monitor_update() */
*static_cast<const char**>(save) = name;
return(0);
}
/*************************************************************//**
Validate passed-in "value" is a valid monitor counter name.
This function is registered as a callback with MySQL.
@return 0 for valid name */
static
int
innodb_monitor_validate(
/*====================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to system
variable */
void* save, /*!< out: immediate result
for update function */
struct st_mysql_value* value) /*!< in: incoming string */
{
const char* name;
char* monitor_name;
char buff[STRING_BUFFER_USUAL_SIZE];
int len = sizeof(buff);
int ret;
ut_a(save != NULL);
ut_a(value != NULL);
name = value->val_str(value, buff, &len);
/* monitor_name could point to memory from MySQL
or buff[]. Always dup the name to memory allocated
by InnoDB, so we can access it in another callback
function innodb_monitor_update() and free it appropriately */
if (name) {
monitor_name = my_strdup(name, MYF(0));
} else {
return(1);
}
ret = innodb_monitor_valid_byname(save, monitor_name);
if (ret) {
/* Validation failed */
my_free(monitor_name);
} else {
/* monitor_name will be freed in separate callback function
innodb_monitor_update(). Assert "save" point to
the "monitor_name" variable */
ut_ad(*static_cast<char**>(save) == monitor_name);
}
return(ret);
}
/****************************************************************//**
Update the system variable innodb_enable(disable/reset/reset_all)_monitor
according to the "set_option" and turn on/off or reset specified monitor
counter. */
static
void
innodb_monitor_update(
/*==================*/
THD* thd, /*!< in: thread handle */
void* var_ptr, /*!< out: where the
formal string goes */
const void* save, /*!< in: immediate result
from check function */
mon_option_t set_option, /*!< in: the set option,
whether to turn on/off or
reset the counter */
ibool free_mem) /*!< in: whether we will
need to free the memory */
{
monitor_info_t* monitor_info;
ulint monitor_id;
ulint err_monitor = 0;
const char* name;
ut_a(save != NULL);
name = *static_cast<const char*const*>(save);
if (!name) {
monitor_id = MONITOR_DEFAULT_START;
} else {
monitor_id = innodb_monitor_id_by_name_get(name);
/* Double check we have a valid monitor ID */
if (monitor_id == MONITOR_NO_MATCH) {
return;
}
}
if (monitor_id == MONITOR_DEFAULT_START) {
/* If user set the variable to "default", we will
print a message and make this set operation a "noop".
The check is being made here is because "set default"
does not go through validation function */
if (thd) {
push_warning_printf(
thd, Sql_condition::WARN_LEVEL_WARN,
ER_NO_DEFAULT,
"Default value is not defined for "
"this set option. Please specify "
"correct counter or module name.");
} else {
sql_print_error(
"Default value is not defined for "
"this set option. Please specify "
"correct counter or module name.\n");
}
if (var_ptr) {
*(const char**) var_ptr = NULL;
}
} else if (monitor_id == MONITOR_WILDCARD_MATCH) {
innodb_monitor_update_wildcard(name, set_option);
} else {
monitor_info = srv_mon_get_info(
static_cast<monitor_id_t>(monitor_id));
ut_a(monitor_info);
/* If monitor is already truned on, someone could already
collect monitor data, exit and ask user to turn off the
monitor before turn it on again. */
if (set_option == MONITOR_TURN_ON
&& MONITOR_IS_ON(monitor_id)) {
err_monitor = monitor_id;
goto exit;
}
if (var_ptr) {
*(const char**) var_ptr = monitor_info->monitor_name;
}
/* Depending on the monitor name is for a module or
a counter, process counters in the whole module or
individual counter. */
if (monitor_info->monitor_type & MONITOR_MODULE) {
srv_mon_set_module_control(
static_cast<monitor_id_t>(monitor_id),
set_option);
} else {
innodb_monitor_set_option(monitor_info, set_option);
}
}
exit:
/* Only if we are trying to turn on a monitor that already
been turned on, we will set err_monitor. Print related
information */
if (err_monitor) {
sql_print_warning("Monitor %s is already enabled.",
srv_mon_get_name((monitor_id_t) err_monitor));
}
if (free_mem && name) {
my_free((void*) name);
}
return;
}
#ifdef __WIN__
/*************************************************************//**
Validate if passed-in "value" is a valid value for
innodb_buffer_pool_filename. On Windows, file names with colon (:)
are not allowed.
@return 0 for valid name */
static
int
innodb_srv_buf_dump_filename_validate(
/*==================================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to system
variable */
void* save, /*!< out: immediate result
for update function */
struct st_mysql_value* value) /*!< in: incoming string */
{
const char* buf_name;
char buff[OS_FILE_MAX_PATH];
int len= sizeof(buff);
ut_a(save != NULL);
ut_a(value != NULL);
buf_name = value->val_str(value, buff, &len);
if (buf_name) {
if (is_filename_allowed(buf_name, len, FALSE)){
*static_cast<const char**>(save) = buf_name;
return(0);
} else {
push_warning_printf(thd,
Sql_condition::WARN_LEVEL_WARN,
ER_WRONG_ARGUMENTS,
"InnoDB: innodb_buffer_pool_filename "
"cannot have colon (:) in the file name.");
}
}
return(1);
}
#else /* __WIN__ */
# define innodb_srv_buf_dump_filename_validate NULL
#endif /* __WIN__ */
#ifdef UNIV_DEBUG
static char* srv_buffer_pool_evict;
/****************************************************************//**
Evict all uncompressed pages of compressed tables from the buffer pool.
Keep the compressed pages in the buffer pool.
@return whether all uncompressed pages were evicted */
static __attribute__((warn_unused_result))
bool
innodb_buffer_pool_evict_uncompressed(void)
/*=======================================*/
{
bool all_evicted = true;
for (ulint i = 0; i < srv_buf_pool_instances; i++) {
buf_pool_t* buf_pool = &buf_pool_ptr[i];
buf_pool_mutex_enter(buf_pool);
for (buf_block_t* block = UT_LIST_GET_LAST(
buf_pool->unzip_LRU);
block != NULL; ) {
buf_block_t* prev_block = UT_LIST_GET_PREV(
unzip_LRU, block);
ut_ad(buf_block_get_state(block)
== BUF_BLOCK_FILE_PAGE);
ut_ad(block->in_unzip_LRU_list);
ut_ad(block->page.in_LRU_list);
if (!buf_LRU_free_page(&block->page, false)) {
all_evicted = false;
}
block = prev_block;
}
buf_pool_mutex_exit(buf_pool);
}
return(all_evicted);
}
/****************************************************************//**
Called on SET GLOBAL innodb_buffer_pool_evict=...
Handles some values specially, to evict pages from the buffer pool.
SET GLOBAL innodb_buffer_pool_evict='uncompressed'
evicts all uncompressed page frames of compressed tablespaces. */
static
void
innodb_buffer_pool_evict_update(
/*============================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var*var, /*!< in: pointer to system variable */
void* var_ptr,/*!< out: ignored */
const void* save) /*!< in: immediate result
from check function */
{
if (const char* op = *static_cast<const char*const*>(save)) {
if (!strcmp(op, "uncompressed")) {
for (uint tries = 0; tries < 10000; tries++) {
if (innodb_buffer_pool_evict_uncompressed()) {
return;
}
os_thread_sleep(10000);
}
/* We failed to evict all uncompressed pages. */
ut_ad(0);
}
}
}
#endif /* UNIV_DEBUG */
/****************************************************************//**
Update the system variable innodb_monitor_enable and enable
specified monitor counter.
This function is registered as a callback with MySQL. */
static
void
innodb_enable_monitor_update(
/*=========================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to
system variable */
void* var_ptr,/*!< out: where the
formal string goes */
const void* save) /*!< in: immediate result
from check function */
{
innodb_monitor_update(thd, var_ptr, save, MONITOR_TURN_ON, TRUE);
}
/****************************************************************//**
Update the system variable innodb_monitor_disable and turn
off specified monitor counter. */
static
void
innodb_disable_monitor_update(
/*==========================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to
system variable */
void* var_ptr,/*!< out: where the
formal string goes */
const void* save) /*!< in: immediate result
from check function */
{
innodb_monitor_update(thd, var_ptr, save, MONITOR_TURN_OFF, TRUE);
}
/****************************************************************//**
Update the system variable innodb_monitor_reset and reset
specified monitor counter(s).
This function is registered as a callback with MySQL. */
static
void
innodb_reset_monitor_update(
/*========================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to
system variable */
void* var_ptr,/*!< out: where the
formal string goes */
const void* save) /*!< in: immediate result
from check function */
{
innodb_monitor_update(thd, var_ptr, save, MONITOR_RESET_VALUE, TRUE);
}
/****************************************************************//**
Update the system variable innodb_monitor_reset_all and reset
all value related monitor counter.
This function is registered as a callback with MySQL. */
static
void
innodb_reset_all_monitor_update(
/*============================*/
THD* thd, /*!< in: thread handle */
struct st_mysql_sys_var* var, /*!< in: pointer to
system variable */
void* var_ptr,/*!< out: where the
formal string goes */
const void* save) /*!< in: immediate result
from check function */
{
innodb_monitor_update(thd, var_ptr, save, MONITOR_RESET_ALL_VALUE,
TRUE);
}
/****************************************************************//**
Parse and enable InnoDB monitor counters during server startup.
User can list the monitor counters/groups to be enable by specifying
"loose-innodb_monitor_enable=monitor_name1;monitor_name2..."
in server configuration file or at the command line. The string
separate could be ";", "," or empty space. */
static
void
innodb_enable_monitor_at_startup(
/*=============================*/
char* str) /*!< in/out: monitor counter enable list */
{
static const char* sep = " ;,";
char* last;
ut_a(str);
/* Walk through the string, and separate each monitor counter
and/or counter group name, and calling innodb_monitor_update()
if successfully updated. Please note that the "str" would be
changed by strtok_r() as it walks through it. */
for (char* option = strtok_r(str, sep, &last);
option;
option = strtok_r(NULL, sep, &last)) {
ulint ret;
char* option_name;
ret = innodb_monitor_valid_byname(&option_name, option);
/* The name is validated if ret == 0 */
if (!ret) {
innodb_monitor_update(NULL, NULL, &option,
MONITOR_TURN_ON, FALSE);
} else {
sql_print_warning("Invalid monitor counter"
" name: '%s'", option);
}
}
}
/****************************************************************//**
Callback function for accessing the InnoDB variables from MySQL:
SHOW VARIABLES. */
static
int
show_innodb_vars(
/*=============*/
THD* thd,
SHOW_VAR* var,
char* buff)
{
innodb_export_status();
var->type = SHOW_ARRAY;
var->value = (char*) &innodb_status_variables;
return(0);
}
/****************************************************************//**
This function checks each index name for a table against reserved
system default primary index name 'GEN_CLUST_INDEX'. If a name
matches, this function pushes an warning message to the client,
and returns true.
@return true if the index name matches the reserved name */
UNIV_INTERN
bool
innobase_index_name_is_reserved(
/*============================*/
THD* thd, /*!< in/out: MySQL connection */
const KEY* key_info, /*!< in: Indexes to be created */
ulint num_of_keys) /*!< in: Number of indexes to
be created. */
{
const KEY* key;
uint key_num; /* index number */
for (key_num = 0; key_num < num_of_keys; key_num++) {
key = &key_info[key_num];
if (innobase_strcasecmp(key->name,
innobase_index_reserve_name) == 0) {
/* Push warning to mysql */
push_warning_printf(thd,
Sql_condition::WARN_LEVEL_WARN,
ER_WRONG_NAME_FOR_INDEX,
"Cannot Create Index with name "
"'%s'. The name is reserved "
"for the system default primary "
"index.",
innobase_index_reserve_name);
my_error(ER_WRONG_NAME_FOR_INDEX, MYF(0),
innobase_index_reserve_name);
return(true);
}
}
return(false);
}
/***********************************************************************
Retrieve the FTS Relevance Ranking result for doc with doc_id
of prebuilt->fts_doc_id
@return the relevance ranking value */
UNIV_INTERN
float
innobase_fts_retrieve_ranking(
/*============================*/
FT_INFO * fts_hdl) /*!< in: FTS handler */
{
row_prebuilt_t* ft_prebuilt;
fts_result_t* result;
result = ((NEW_FT_INFO*) fts_hdl)->ft_result;
ft_prebuilt = ((NEW_FT_INFO*) fts_hdl)->ft_prebuilt;
if (ft_prebuilt->read_just_key) {
fts_ranking_t* ranking =
rbt_value(fts_ranking_t, result->current);
return(ranking->rank);
}
/* Retrieve the ranking value for doc_id with value of
prebuilt->fts_doc_id */
return(fts_retrieve_ranking(result, ft_prebuilt->fts_doc_id));
}
/***********************************************************************
Free the memory for the FTS handler */
UNIV_INTERN
void
innobase_fts_close_ranking(
/*=======================*/
FT_INFO * fts_hdl)
{
fts_result_t* result;
((NEW_FT_INFO*) fts_hdl)->ft_prebuilt->in_fts_query = false;
result = ((NEW_FT_INFO*) fts_hdl)->ft_result;
fts_query_free_result(result);
my_free((uchar*) fts_hdl);
return;
}
/***********************************************************************
Find and Retrieve the FTS Relevance Ranking result for doc with doc_id
of prebuilt->fts_doc_id
@return the relevance ranking value */
UNIV_INTERN
float
innobase_fts_find_ranking(
/*======================*/
FT_INFO* fts_hdl, /*!< in: FTS handler */
uchar* record, /*!< in: Unused */
uint len) /*!< in: Unused */
{
row_prebuilt_t* ft_prebuilt;
fts_result_t* result;
ft_prebuilt = ((NEW_FT_INFO*) fts_hdl)->ft_prebuilt;
result = ((NEW_FT_INFO*) fts_hdl)->ft_result;
/* Retrieve the ranking value for doc_id with value of
prebuilt->fts_doc_id */
return(fts_retrieve_ranking(result, ft_prebuilt->fts_doc_id));
}
#ifdef UNIV_DEBUG
static my_bool innodb_purge_run_now = TRUE;
static my_bool innodb_purge_stop_now = TRUE;
static my_bool innodb_log_checkpoint_now = TRUE;
static my_bool innodb_buf_flush_list_now = TRUE;
/****************************************************************//**
Set the purge state to RUN. If purge is disabled then it
is a no-op. This function is registered as a callback with MySQL. */
static
void
purge_run_now_set(
/*==============*/
THD* thd /*!< in: thread handle */
__attribute__((unused)),
struct st_mysql_sys_var* var /*!< in: pointer to system
variable */
__attribute__((unused)),
void* var_ptr /*!< out: where the formal
string goes */
__attribute__((unused)),
const void* save) /*!< in: immediate result from
check function */
{
if (*(my_bool*) save && trx_purge_state() != PURGE_STATE_DISABLED) {
trx_purge_run();
}
}
/****************************************************************//**
Set the purge state to STOP. If purge is disabled then it
is a no-op. This function is registered as a callback with MySQL. */
static
void
purge_stop_now_set(
/*===============*/
THD* thd /*!< in: thread handle */
__attribute__((unused)),
struct st_mysql_sys_var* var /*!< in: pointer to system
variable */
__attribute__((unused)),
void* var_ptr /*!< out: where the formal
string goes */
__attribute__((unused)),
const void* save) /*!< in: immediate result from
check function */
{
if (*(my_bool*) save && trx_purge_state() != PURGE_STATE_DISABLED) {
trx_purge_stop();
}
}
/****************************************************************//**
Force innodb to checkpoint. */
static
void
checkpoint_now_set(
/*===============*/
THD* thd /*!< in: thread handle */
__attribute__((unused)),
struct st_mysql_sys_var* var /*!< in: pointer to system
variable */
__attribute__((unused)),
void* var_ptr /*!< out: where the formal
string goes */
__attribute__((unused)),
const void* save) /*!< in: immediate result from
check function */
{
if (*(my_bool*) save) {
while (log_sys->last_checkpoint_lsn < log_sys->lsn) {
log_make_checkpoint_at(LSN_MAX, TRUE);
fil_flush_file_spaces(FIL_LOG);
}
fil_write_flushed_lsn_to_data_files(log_sys->lsn, 0);
fil_flush_file_spaces(FIL_TABLESPACE);
}
}
/****************************************************************//**
Force a dirty pages flush now. */
static
void
buf_flush_list_now_set(
/*===================*/
THD* thd /*!< in: thread handle */
__attribute__((unused)),
struct st_mysql_sys_var* var /*!< in: pointer to system
variable */
__attribute__((unused)),
void* var_ptr /*!< out: where the formal
string goes */
__attribute__((unused)),
const void* save) /*!< in: immediate result from
check function */
{
if (*(my_bool*) save) {
buf_flush_list(ULINT_MAX, LSN_MAX, NULL);
buf_flush_wait_batch_end(NULL, BUF_FLUSH_LIST);
}
}
#endif /* UNIV_DEBUG */
/***********************************************************************
@return version of the extended FTS API */
uint
innobase_fts_get_version()
/*======================*/
{
/* Currently this doesn't make much sense as returning
HA_CAN_FULLTEXT_EXT automatically mean this version is supported.
This supposed to ease future extensions. */
return(2);
}
/***********************************************************************
@return Which part of the extended FTS API is supported */
ulonglong
innobase_fts_flags()
/*================*/
{
return(FTS_ORDERED_RESULT | FTS_DOCID_IN_RESULT);
}
/***********************************************************************
Find and Retrieve the FTS doc_id for the current result row
@return the document ID */
ulonglong
innobase_fts_retrieve_docid(
/*========================*/
FT_INFO_EXT * fts_hdl) /*!< in: FTS handler */
{
row_prebuilt_t* ft_prebuilt;
fts_result_t* result;
ft_prebuilt = ((NEW_FT_INFO *)fts_hdl)->ft_prebuilt;
result = ((NEW_FT_INFO *)fts_hdl)->ft_result;
if (ft_prebuilt->read_just_key) {
fts_ranking_t* ranking =
rbt_value(fts_ranking_t, result->current);
return(ranking->doc_id);
}
return(ft_prebuilt->fts_doc_id);
}
/***********************************************************************
Find and retrieve the size of the current result
@return number of matching rows */
ulonglong
innobase_fts_count_matches(
/*=======================*/
FT_INFO_EXT* fts_hdl) /*!< in: FTS handler */
{
NEW_FT_INFO* handle = (NEW_FT_INFO *) fts_hdl;
if (handle->ft_result->rankings_by_id != 0) {
return rbt_size(handle->ft_result->rankings_by_id);
} else {
return(0);
}
}
/* These variables are never read by InnoDB or changed. They are a kind of
dummies that are needed by the MySQL infrastructure to call
buffer_pool_dump_now(), buffer_pool_load_now() and buffer_pool_load_abort()
by the user by doing:
SET GLOBAL innodb_buffer_pool_dump_now=ON;
SET GLOBAL innodb_buffer_pool_load_now=ON;
SET GLOBAL innodb_buffer_pool_load_abort=ON;
Their values are read by MySQL and displayed to the user when the variables
are queried, e.g.:
SELECT @@innodb_buffer_pool_dump_now;
SELECT @@innodb_buffer_pool_load_now;
SELECT @@innodb_buffer_pool_load_abort; */
static my_bool innodb_buffer_pool_dump_now = FALSE;
static my_bool innodb_buffer_pool_load_now = FALSE;
static my_bool innodb_buffer_pool_load_abort = FALSE;
/****************************************************************//**
Trigger a dump of the buffer pool if innodb_buffer_pool_dump_now is set
to ON. This function is registered as a callback with MySQL. */
static
void
buffer_pool_dump_now(
/*=================*/
THD* thd /*!< in: thread handle */
__attribute__((unused)),
struct st_mysql_sys_var* var /*!< in: pointer to system
variable */
__attribute__((unused)),
void* var_ptr /*!< out: where the formal
string goes */
__attribute__((unused)),
const void* save) /*!< in: immediate result from
check function */
{
if (*(my_bool*) save && !srv_read_only_mode) {
buf_dump_start();
}
}
/****************************************************************//**
Trigger a load of the buffer pool if innodb_buffer_pool_load_now is set
to ON. This function is registered as a callback with MySQL. */
static
void
buffer_pool_load_now(
/*=================*/
THD* thd /*!< in: thread handle */
__attribute__((unused)),
struct st_mysql_sys_var* var /*!< in: pointer to system
variable */
__attribute__((unused)),
void* var_ptr /*!< out: where the formal
string goes */
__attribute__((unused)),
const void* save) /*!< in: immediate result from
check function */
{
if (*(my_bool*) save) {
buf_load_start();
}
}
/****************************************************************//**
Abort a load of the buffer pool if innodb_buffer_pool_load_abort
is set to ON. This function is registered as a callback with MySQL. */
static
void
buffer_pool_load_abort(
/*===================*/
THD* thd /*!< in: thread handle */
__attribute__((unused)),
struct st_mysql_sys_var* var /*!< in: pointer to system
variable */
__attribute__((unused)),
void* var_ptr /*!< out: where the formal
string goes */
__attribute__((unused)),
const void* save) /*!< in: immediate result from
check function */
{
if (*(my_bool*) save) {
buf_load_abort();
}
}
/** Update innodb_status_output or innodb_status_output_locks,
which control InnoDB "status monitor" output to the error log.
@param[in] thd thread handle
@param[in] var system variable
@param[out] var_ptr current value
@param[in] save to-be-assigned value */
static
void
innodb_status_output_update(
THD* thd __attribute__((unused)),
struct st_mysql_sys_var* var __attribute__((unused)),
void* var_ptr __attribute__((unused)),
const void* save __attribute__((unused)))
{
*static_cast<my_bool*>(var_ptr) = *static_cast<const my_bool*>(save);
/* The lock timeout monitor thread also takes care of this
output. */
os_event_set(lock_sys->timeout_event);
}
static SHOW_VAR innodb_status_variables_export[]= {
{"Innodb", (char*) &show_innodb_vars, SHOW_FUNC},
{NullS, NullS, SHOW_LONG}
};
static struct st_mysql_storage_engine innobase_storage_engine=
{ MYSQL_HANDLERTON_INTERFACE_VERSION };
/* plugin options */
static MYSQL_SYSVAR_ENUM(checksum_algorithm, srv_checksum_algorithm,
PLUGIN_VAR_RQCMDARG,
"The algorithm InnoDB uses for page checksumming. Possible values are "
"CRC32 (hardware accelerated if the CPU supports it) "
"write crc32, allow any of the other checksums to match when reading; "
"STRICT_CRC32 "
"write crc32, do not allow other algorithms to match when reading; "
"INNODB "
"write a software calculated checksum, allow any other checksums "
"to match when reading; "
"STRICT_INNODB "
"write a software calculated checksum, do not allow other algorithms "
"to match when reading; "
"NONE "
"write a constant magic number, do not do any checksum verification "
"when reading (same as innodb_checksums=OFF); "
"STRICT_NONE "
"write a constant magic number, do not allow values other than that "
"magic number when reading; "
"Files updated when this option is set to crc32 or strict_crc32 will "
"not be readable by MySQL versions older than 5.6.3",
NULL, NULL, SRV_CHECKSUM_ALGORITHM_INNODB,
&innodb_checksum_algorithm_typelib);
static MYSQL_SYSVAR_BOOL(checksums, innobase_use_checksums,
PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY,
"DEPRECATED. Use innodb_checksum_algorithm=NONE instead of setting "
"this to OFF. "
"Enable InnoDB checksums validation (enabled by default). "
"Disable with --skip-innodb-checksums.",
NULL, NULL, TRUE);
static MYSQL_SYSVAR_STR(data_home_dir, innobase_data_home_dir,
PLUGIN_VAR_READONLY,
"The common part for InnoDB table spaces.",
NULL, NULL, NULL);
static MYSQL_SYSVAR_BOOL(doublewrite, innobase_use_doublewrite,
PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY,
"Enable InnoDB doublewrite buffer (enabled by default). "
"Disable with --skip-innodb-doublewrite.",
NULL, NULL, TRUE);
static MYSQL_SYSVAR_ULONG(io_capacity, srv_io_capacity,
PLUGIN_VAR_RQCMDARG,
"Number of IOPs the server can do. Tunes the background IO rate",
NULL, innodb_io_capacity_update, 200, 100, ~0UL, 0);
static MYSQL_SYSVAR_ULONG(io_capacity_max, srv_max_io_capacity,
PLUGIN_VAR_RQCMDARG,
"Limit to which innodb_io_capacity can be inflated.",
NULL, innodb_io_capacity_max_update,
SRV_MAX_IO_CAPACITY_DUMMY_DEFAULT, 100,
SRV_MAX_IO_CAPACITY_LIMIT, 0);
#ifdef UNIV_DEBUG
static MYSQL_SYSVAR_BOOL(purge_run_now, innodb_purge_run_now,
PLUGIN_VAR_OPCMDARG,
"Set purge state to RUN",
NULL, purge_run_now_set, FALSE);
static MYSQL_SYSVAR_BOOL(purge_stop_now, innodb_purge_stop_now,
PLUGIN_VAR_OPCMDARG,
"Set purge state to STOP",
NULL, purge_stop_now_set, FALSE);
static MYSQL_SYSVAR_BOOL(log_checkpoint_now, innodb_log_checkpoint_now,
PLUGIN_VAR_OPCMDARG,
"Force checkpoint now",
NULL, checkpoint_now_set, FALSE);
static MYSQL_SYSVAR_BOOL(buf_flush_list_now, innodb_buf_flush_list_now,
PLUGIN_VAR_OPCMDARG,
"Force dirty page flush now",
NULL, buf_flush_list_now_set, FALSE);
#endif /* UNIV_DEBUG */
static MYSQL_SYSVAR_ULONG(purge_batch_size, srv_purge_batch_size,
PLUGIN_VAR_OPCMDARG,
"Number of UNDO log pages to purge in one batch from the history list.",
NULL, NULL,
300, /* Default setting */
1, /* Minimum value */
5000, 0); /* Maximum value */
static MYSQL_SYSVAR_ULONG(purge_threads, srv_n_purge_threads,
PLUGIN_VAR_OPCMDARG | PLUGIN_VAR_READONLY,
"Purge threads can be from 1 to 32. Default is 1.",
NULL, NULL,
1, /* Default setting */
1, /* Minimum value */
32, 0); /* Maximum value */
static MYSQL_SYSVAR_ULONG(sync_array_size, srv_sync_array_size,
PLUGIN_VAR_OPCMDARG | PLUGIN_VAR_READONLY,
"Size of the mutex/lock wait array.",
NULL, NULL,
1, /* Default setting */
1, /* Minimum value */
1024, 0); /* Maximum value */
static MYSQL_SYSVAR_ULONG(fast_shutdown, innobase_fast_shutdown,
PLUGIN_VAR_OPCMDARG,
"Speeds up the shutdown process of the InnoDB storage engine. Possible "
"values are 0, 1 (faster) or 2 (fastest - crash-like).",
NULL, NULL, 1, 0, 2, 0);
static MYSQL_SYSVAR_BOOL(file_per_table, srv_file_per_table,
PLUGIN_VAR_NOCMDARG,
"Stores each InnoDB table to an .ibd file in the database dir.",
NULL, NULL, TRUE);
static MYSQL_SYSVAR_STR(file_format, innobase_file_format_name,
PLUGIN_VAR_RQCMDARG,
"File format to use for new tables in .ibd files.",
innodb_file_format_name_validate,
innodb_file_format_name_update, "Antelope");
/* "innobase_file_format_check" decides whether we would continue
booting the server if the file format stamped on the system
table space exceeds the maximum file format supported
by the server. Can be set during server startup at command
line or configure file, and a read only variable after
server startup */
static MYSQL_SYSVAR_BOOL(file_format_check, innobase_file_format_check,
PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY,
"Whether to perform system file format check.",
NULL, NULL, TRUE);
/* If a new file format is introduced, the file format
name needs to be updated accordingly. Please refer to
file_format_name_map[] defined in trx0sys.cc for the next
file format name. */
static MYSQL_SYSVAR_STR(file_format_max, innobase_file_format_max,
PLUGIN_VAR_OPCMDARG,
"The highest file format in the tablespace.",
innodb_file_format_max_validate,
innodb_file_format_max_update, "Antelope");
static MYSQL_SYSVAR_STR(ft_server_stopword_table, innobase_server_stopword_table,
PLUGIN_VAR_OPCMDARG | PLUGIN_VAR_MEMALLOC,
"The user supplied stopword table name.",
innodb_stopword_table_validate,
NULL,
NULL);
static MYSQL_SYSVAR_UINT(flush_log_at_timeout, srv_flush_log_at_timeout,
PLUGIN_VAR_OPCMDARG,
"Write and flush logs every (n) second.",
NULL, NULL, 1, 0, 2700, 0);
static MYSQL_SYSVAR_ULONG(flush_log_at_trx_commit, srv_flush_log_at_trx_commit,
PLUGIN_VAR_OPCMDARG,
"Set to 0 (write and flush once per second),"
" 1 (write and flush at each commit)"
" or 2 (write at commit, flush once per second).",
NULL, NULL, 1, 0, 2, 0);
static MYSQL_SYSVAR_STR(flush_method, innobase_file_flush_method,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"With which method to flush data.", NULL, NULL, NULL);
static MYSQL_SYSVAR_BOOL(large_prefix, innobase_large_prefix,
PLUGIN_VAR_NOCMDARG,
"Support large index prefix length of REC_VERSION_56_MAX_INDEX_COL_LEN (3072) bytes.",
NULL, NULL, FALSE);
static MYSQL_SYSVAR_BOOL(force_load_corrupted, srv_load_corrupted,
PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY,
"Force InnoDB to load metadata of corrupted table.",
NULL, NULL, FALSE);
static MYSQL_SYSVAR_BOOL(locks_unsafe_for_binlog, innobase_locks_unsafe_for_binlog,
PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY,
"DEPRECATED. This option may be removed in future releases. "
"Please use READ COMMITTED transaction isolation level instead. "
"Force InnoDB to not use next-key locking, to use only row-level locking.",
NULL, NULL, FALSE);
#ifdef UNIV_LOG_ARCHIVE
static MYSQL_SYSVAR_STR(log_arch_dir, innobase_log_arch_dir,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"Where full logs should be archived.", NULL, NULL, NULL);
static MYSQL_SYSVAR_BOOL(log_archive, innobase_log_archive,
PLUGIN_VAR_OPCMDARG | PLUGIN_VAR_READONLY,
"Set to 1 if you want to have logs archived.", NULL, NULL, FALSE);
#endif /* UNIV_LOG_ARCHIVE */
static MYSQL_SYSVAR_STR(log_group_home_dir, srv_log_group_home_dir,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"Path to InnoDB log files.", NULL, NULL, NULL);
static MYSQL_SYSVAR_ULONG(max_dirty_pages_pct, srv_max_buf_pool_modified_pct,
PLUGIN_VAR_RQCMDARG,
"Percentage of dirty pages allowed in bufferpool.",
NULL, innodb_max_dirty_pages_pct_update, 75, 0, 99, 0);
static MYSQL_SYSVAR_ULONG(max_dirty_pages_pct_lwm,
srv_max_dirty_pages_pct_lwm,
PLUGIN_VAR_RQCMDARG,
"Percentage of dirty pages at which flushing kicks in.",
NULL, innodb_max_dirty_pages_pct_lwm_update, 0, 0, 99, 0);
static MYSQL_SYSVAR_ULONG(adaptive_flushing_lwm,
srv_adaptive_flushing_lwm,
PLUGIN_VAR_RQCMDARG,
"Percentage of log capacity below which no adaptive flushing happens.",
NULL, NULL, 10, 0, 70, 0);
static MYSQL_SYSVAR_BOOL(adaptive_flushing, srv_adaptive_flushing,
PLUGIN_VAR_NOCMDARG,
"Attempt flushing dirty pages to avoid IO bursts at checkpoints.",
NULL, NULL, TRUE);
static MYSQL_SYSVAR_ULONG(flushing_avg_loops,
srv_flushing_avg_loops,
PLUGIN_VAR_RQCMDARG,
"Number of iterations over which the background flushing is averaged.",
NULL, NULL, 30, 1, 1000, 0);
static MYSQL_SYSVAR_ULONG(max_purge_lag, srv_max_purge_lag,
PLUGIN_VAR_RQCMDARG,
"Desired maximum length of the purge queue (0 = no limit)",
NULL, NULL, 0, 0, ~0UL, 0);
static MYSQL_SYSVAR_ULONG(max_purge_lag_delay, srv_max_purge_lag_delay,
PLUGIN_VAR_RQCMDARG,
"Maximum delay of user threads in micro-seconds",
NULL, NULL,
0L, /* Default seting */
0L, /* Minimum value */
10000000UL, 0); /* Maximum value */
static MYSQL_SYSVAR_BOOL(rollback_on_timeout, innobase_rollback_on_timeout,
PLUGIN_VAR_OPCMDARG | PLUGIN_VAR_READONLY,
"Roll back the complete transaction on lock wait timeout, for 4.x compatibility (disabled by default)",
NULL, NULL, FALSE);
static MYSQL_SYSVAR_BOOL(status_file, innobase_create_status_file,
PLUGIN_VAR_OPCMDARG | PLUGIN_VAR_NOSYSVAR,
"Enable SHOW ENGINE INNODB STATUS output in the innodb_status.<pid> file",
NULL, NULL, FALSE);
static MYSQL_SYSVAR_BOOL(stats_on_metadata, innobase_stats_on_metadata,
PLUGIN_VAR_OPCMDARG,
"Enable statistics gathering for metadata commands such as "
"SHOW TABLE STATUS for tables that use transient statistics (off by default)",
NULL, NULL, FALSE);
static MYSQL_SYSVAR_ULONGLONG(stats_sample_pages, srv_stats_transient_sample_pages,
PLUGIN_VAR_RQCMDARG,
"Deprecated, use innodb_stats_transient_sample_pages instead",
NULL, innodb_stats_sample_pages_update, 8, 1, ~0ULL, 0);
static MYSQL_SYSVAR_ULONGLONG(stats_transient_sample_pages,
srv_stats_transient_sample_pages,
PLUGIN_VAR_RQCMDARG,
"The number of leaf index pages to sample when calculating transient "
"statistics (if persistent statistics are not used, default 8)",
NULL, NULL, 8, 1, ~0ULL, 0);
static MYSQL_SYSVAR_BOOL(stats_persistent, srv_stats_persistent,
PLUGIN_VAR_OPCMDARG,
"InnoDB persistent statistics enabled for all tables unless overridden "
"at table level",
NULL, NULL, TRUE);
static MYSQL_SYSVAR_BOOL(stats_auto_recalc, srv_stats_auto_recalc,
PLUGIN_VAR_OPCMDARG,
"InnoDB automatic recalculation of persistent statistics enabled for all "
"tables unless overridden at table level (automatic recalculation is only "
"done when InnoDB decides that the table has changed too much and needs a "
"new statistics)",
NULL, NULL, TRUE);
static MYSQL_SYSVAR_ULONGLONG(stats_persistent_sample_pages,
srv_stats_persistent_sample_pages,
PLUGIN_VAR_RQCMDARG,
"The number of leaf index pages to sample when calculating persistent "
"statistics (by ANALYZE, default 20)",
NULL, NULL, 20, 1, ~0ULL, 0);
static MYSQL_SYSVAR_BOOL(adaptive_hash_index, btr_search_enabled,
PLUGIN_VAR_OPCMDARG,
"Enable InnoDB adaptive hash index (enabled by default). "
"Disable with --skip-innodb-adaptive-hash-index.",
NULL, innodb_adaptive_hash_index_update, TRUE);
static MYSQL_SYSVAR_ULONG(replication_delay, srv_replication_delay,
PLUGIN_VAR_RQCMDARG,
"Replication thread delay (ms) on the slave server if "
"innodb_thread_concurrency is reached (0 by default)",
NULL, NULL, 0, 0, ~0UL, 0);
static MYSQL_SYSVAR_UINT(compression_level, page_zip_level,
PLUGIN_VAR_RQCMDARG,
"Compression level used for compressed row format. 0 is no compression"
", 1 is fastest, 9 is best compression and default is 6.",
NULL, NULL, DEFAULT_COMPRESSION_LEVEL, 0, 9, 0);
static MYSQL_SYSVAR_BOOL(log_compressed_pages, page_zip_log_pages,
PLUGIN_VAR_OPCMDARG,
"Enables/disables the logging of entire compressed page images."
" InnoDB logs the compressed pages to prevent corruption if"
" the zlib compression algorithm changes."
" When turned OFF, InnoDB will assume that the zlib"
" compression algorithm doesn't change.",
NULL, NULL, TRUE);
static MYSQL_SYSVAR_LONG(additional_mem_pool_size, innobase_additional_mem_pool_size,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"DEPRECATED. This option may be removed in future releases, "
"together with the option innodb_use_sys_malloc and with the InnoDB's "
"internal memory allocator. "
"Size of a memory pool InnoDB uses to store data dictionary information and other internal data structures.",
NULL, NULL, 8*1024*1024L, 512*1024L, LONG_MAX, 1024);
static MYSQL_SYSVAR_ULONG(autoextend_increment, srv_auto_extend_increment,
PLUGIN_VAR_RQCMDARG,
"Data file autoextend increment in megabytes",
NULL, NULL, 64L, 1L, 1000L, 0);
static MYSQL_SYSVAR_LONGLONG(buffer_pool_size, innobase_buffer_pool_size,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"The size of the memory buffer InnoDB uses to cache data and indexes of its tables.",
NULL, NULL, 128*1024*1024L, 5*1024*1024L, LONGLONG_MAX, 1024*1024L);
#if defined UNIV_DEBUG || defined UNIV_PERF_DEBUG
static MYSQL_SYSVAR_ULONG(page_hash_locks, srv_n_page_hash_locks,
PLUGIN_VAR_OPCMDARG | PLUGIN_VAR_READONLY,
"Number of rw_locks protecting buffer pool page_hash. Rounded up to the next power of 2",
NULL, NULL, 16, 1, MAX_PAGE_HASH_LOCKS, 0);
static MYSQL_SYSVAR_ULONG(doublewrite_batch_size, srv_doublewrite_batch_size,
PLUGIN_VAR_OPCMDARG | PLUGIN_VAR_READONLY,
"Number of pages reserved in doublewrite buffer for batch flushing",
NULL, NULL, 120, 1, 127, 0);
#endif /* defined UNIV_DEBUG || defined UNIV_PERF_DEBUG */
static MYSQL_SYSVAR_LONG(buffer_pool_instances, innobase_buffer_pool_instances,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"Number of buffer pool instances, set to higher value on high-end machines to increase scalability",
NULL, NULL, 0L, 0L, MAX_BUFFER_POOLS, 1L);
static MYSQL_SYSVAR_STR(buffer_pool_filename, srv_buf_dump_filename,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_MEMALLOC,
"Filename to/from which to dump/load the InnoDB buffer pool",
innodb_srv_buf_dump_filename_validate, NULL, SRV_BUF_DUMP_FILENAME_DEFAULT);
static MYSQL_SYSVAR_BOOL(buffer_pool_dump_now, innodb_buffer_pool_dump_now,
PLUGIN_VAR_RQCMDARG,
"Trigger an immediate dump of the buffer pool into a file named @@innodb_buffer_pool_filename",
NULL, buffer_pool_dump_now, FALSE);
static MYSQL_SYSVAR_BOOL(buffer_pool_dump_at_shutdown, srv_buffer_pool_dump_at_shutdown,
PLUGIN_VAR_RQCMDARG,
"Dump the buffer pool into a file named @@innodb_buffer_pool_filename",
NULL, NULL, FALSE);
#ifdef UNIV_DEBUG
static MYSQL_SYSVAR_STR(buffer_pool_evict, srv_buffer_pool_evict,
PLUGIN_VAR_RQCMDARG,
"Evict pages from the buffer pool",
NULL, innodb_buffer_pool_evict_update, "");
#endif /* UNIV_DEBUG */
static MYSQL_SYSVAR_BOOL(buffer_pool_load_now, innodb_buffer_pool_load_now,
PLUGIN_VAR_RQCMDARG,
"Trigger an immediate load of the buffer pool from a file named @@innodb_buffer_pool_filename",
NULL, buffer_pool_load_now, FALSE);
static MYSQL_SYSVAR_BOOL(buffer_pool_load_abort, innodb_buffer_pool_load_abort,
PLUGIN_VAR_RQCMDARG,
"Abort a currently running load of the buffer pool",
NULL, buffer_pool_load_abort, FALSE);
/* there is no point in changing this during runtime, thus readonly */
static MYSQL_SYSVAR_BOOL(buffer_pool_load_at_startup, srv_buffer_pool_load_at_startup,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"Load the buffer pool from a file named @@innodb_buffer_pool_filename",
NULL, NULL, FALSE);
static MYSQL_SYSVAR_ULONG(lru_scan_depth, srv_LRU_scan_depth,
PLUGIN_VAR_RQCMDARG,
"How deep to scan LRU to keep it clean",
NULL, NULL, 1024, 100, ~0UL, 0);
static MYSQL_SYSVAR_ULONG(flush_neighbors, srv_flush_neighbors,
PLUGIN_VAR_OPCMDARG,
"Set to 0 (don't flush neighbors from buffer pool),"
" 1 (flush contiguous neighbors from buffer pool)"
" or 2 (flush neighbors from buffer pool),"
" when flushing a block",
NULL, NULL, 1, 0, 2, 0);
static MYSQL_SYSVAR_ULONG(commit_concurrency, innobase_commit_concurrency,
PLUGIN_VAR_RQCMDARG,
"Helps in performance tuning in heavily concurrent environments.",
innobase_commit_concurrency_validate, NULL, 0, 0, 1000, 0);
static MYSQL_SYSVAR_ULONG(concurrency_tickets, srv_n_free_tickets_to_enter,
PLUGIN_VAR_RQCMDARG,
"Number of times a thread is allowed to enter InnoDB within the same SQL query after it has once got the ticket",
NULL, NULL, 5000L, 1L, ~0UL, 0);
static MYSQL_SYSVAR_LONG(file_io_threads, innobase_file_io_threads,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY | PLUGIN_VAR_NOSYSVAR,
"Number of file I/O threads in InnoDB.",
NULL, NULL, 4, 4, 64, 0);
static MYSQL_SYSVAR_BOOL(ft_enable_diag_print, fts_enable_diag_print,
PLUGIN_VAR_OPCMDARG,
"Whether to enable additional FTS diagnostic printout ",
NULL, NULL, FALSE);
static MYSQL_SYSVAR_BOOL(disable_sort_file_cache, srv_disable_sort_file_cache,
PLUGIN_VAR_OPCMDARG,
"Whether to disable OS system file cache for sort I/O",
NULL, NULL, FALSE);
static MYSQL_SYSVAR_STR(ft_aux_table, fts_internal_tbl_name,
PLUGIN_VAR_NOCMDARG,
"FTS internal auxiliary table to be checked",
innodb_internal_table_validate,
innodb_internal_table_update, NULL);
static MYSQL_SYSVAR_ULONG(ft_cache_size, fts_max_cache_size,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"InnoDB Fulltext search cache size in bytes",
NULL, NULL, 8000000, 1600000, 80000000, 0);
static MYSQL_SYSVAR_ULONG(ft_total_cache_size, fts_max_total_cache_size,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"Total memory allocated for InnoDB Fulltext Search cache",
NULL, NULL, 640000000, 32000000, 1600000000, 0);
static MYSQL_SYSVAR_ULONG(ft_result_cache_limit, fts_result_cache_limit,
PLUGIN_VAR_RQCMDARG,
"InnoDB Fulltext search query result cache limit in bytes",
NULL, NULL, 2000000000L, 1000000L, 4294967295UL, 0);
static MYSQL_SYSVAR_ULONG(ft_min_token_size, fts_min_token_size,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"InnoDB Fulltext search minimum token size in characters",
NULL, NULL, 3, 0, 16, 0);
static MYSQL_SYSVAR_ULONG(ft_max_token_size, fts_max_token_size,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"InnoDB Fulltext search maximum token size in characters",
NULL, NULL, FTS_MAX_WORD_LEN_IN_CHAR, 10, FTS_MAX_WORD_LEN_IN_CHAR, 0);
static MYSQL_SYSVAR_ULONG(ft_num_word_optimize, fts_num_word_optimize,
PLUGIN_VAR_OPCMDARG,
"InnoDB Fulltext search number of words to optimize for each optimize table call ",
NULL, NULL, 2000, 1000, 10000, 0);
static MYSQL_SYSVAR_ULONG(ft_sort_pll_degree, fts_sort_pll_degree,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"InnoDB Fulltext search parallel sort degree, will round up to nearest power of 2 number",
NULL, NULL, 2, 1, 16, 0);
static MYSQL_SYSVAR_ULONG(sort_buffer_size, srv_sort_buf_size,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"Memory buffer size for index creation",
NULL, NULL, 1048576, 65536, 64<<20, 0);
static MYSQL_SYSVAR_ULONGLONG(online_alter_log_max_size, srv_online_max_size,
PLUGIN_VAR_RQCMDARG,
"Maximum modification log file size for online index creation",
NULL, NULL, 128<<20, 65536, ~0ULL, 0);
static MYSQL_SYSVAR_BOOL(optimize_fulltext_only, innodb_optimize_fulltext_only,
PLUGIN_VAR_NOCMDARG,
"Only optimize the Fulltext index of the table",
NULL, NULL, FALSE);
static MYSQL_SYSVAR_ULONG(read_io_threads, innobase_read_io_threads,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"Number of background read I/O threads in InnoDB.",
NULL, NULL, 4, 1, 64, 0);
static MYSQL_SYSVAR_ULONG(write_io_threads, innobase_write_io_threads,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"Number of background write I/O threads in InnoDB.",
NULL, NULL, 4, 1, 64, 0);
static MYSQL_SYSVAR_ULONG(force_recovery, srv_force_recovery,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"Helps to save your data in case the disk image of the database becomes corrupt.",
NULL, NULL, 0, 0, 6, 0);
#ifndef DBUG_OFF
static MYSQL_SYSVAR_ULONG(force_recovery_crash, srv_force_recovery_crash,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"Kills the server during crash recovery.",
NULL, NULL, 0, 0, 10, 0);
#endif /* !DBUG_OFF */
static MYSQL_SYSVAR_ULONG(page_size, srv_page_size,
PLUGIN_VAR_OPCMDARG | PLUGIN_VAR_READONLY,
"Page size to use for all InnoDB tablespaces.",
NULL, NULL, UNIV_PAGE_SIZE_DEF,
UNIV_PAGE_SIZE_MIN, UNIV_PAGE_SIZE_MAX, 0);
static MYSQL_SYSVAR_LONG(log_buffer_size, innobase_log_buffer_size,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"The size of the buffer which InnoDB uses to write log to the log files on disk.",
NULL, NULL, 8*1024*1024L, 256*1024L, LONG_MAX, 1024);
static MYSQL_SYSVAR_LONGLONG(log_file_size, innobase_log_file_size,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"Size of each log file in a log group.",
NULL, NULL, 48*1024*1024L, 1*1024*1024L, LONGLONG_MAX, 1024*1024L);
static MYSQL_SYSVAR_ULONG(log_files_in_group, srv_n_log_files,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"Number of log files in the log group. InnoDB writes to the files in a circular fashion.",
NULL, NULL, 2, 2, SRV_N_LOG_FILES_MAX, 0);
/* Note that the default and minimum values are set to 0 to
detect if the option is passed and print deprecation message */
static MYSQL_SYSVAR_LONG(mirrored_log_groups, innobase_mirrored_log_groups,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"Number of identical copies of log groups we keep for the database. Currently this should be set to 1.",
NULL, NULL, 0, 0, 10, 0);
static MYSQL_SYSVAR_UINT(old_blocks_pct, innobase_old_blocks_pct,
PLUGIN_VAR_RQCMDARG,
"Percentage of the buffer pool to reserve for 'old' blocks.",
NULL, innodb_old_blocks_pct_update, 100 * 3 / 8, 5, 95, 0);
static MYSQL_SYSVAR_UINT(old_blocks_time, buf_LRU_old_threshold_ms,
PLUGIN_VAR_RQCMDARG,
"Move blocks to the 'new' end of the buffer pool if the first access"
" was at least this many milliseconds ago."
" The timeout is disabled if 0.",
NULL, NULL, 1000, 0, UINT_MAX32, 0);
static MYSQL_SYSVAR_LONG(open_files, innobase_open_files,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"How many files at the maximum InnoDB keeps open at the same time.",
NULL, NULL, 0L, 0L, LONG_MAX, 0);
static MYSQL_SYSVAR_ULONG(sync_spin_loops, srv_n_spin_wait_rounds,
PLUGIN_VAR_RQCMDARG,
"Count of spin-loop rounds in InnoDB mutexes (30 by default)",
NULL, NULL, 30L, 0L, ~0UL, 0);
static MYSQL_SYSVAR_ULONG(spin_wait_delay, srv_spin_wait_delay,
PLUGIN_VAR_OPCMDARG,
"Maximum delay between polling for a spin lock (6 by default)",
NULL, NULL, 6L, 0L, ~0UL, 0);
static MYSQL_SYSVAR_ULONG(thread_concurrency, srv_thread_concurrency,
PLUGIN_VAR_RQCMDARG,
"Helps in performance tuning in heavily concurrent environments. Sets the maximum number of threads allowed inside InnoDB. Value 0 will disable the thread throttling.",
NULL, NULL, 0, 0, 1000, 0);
#ifdef HAVE_ATOMIC_BUILTINS
static MYSQL_SYSVAR_ULONG(
adaptive_max_sleep_delay, srv_adaptive_max_sleep_delay,
PLUGIN_VAR_RQCMDARG,
"The upper limit of the sleep delay in usec. Value of 0 disables it.",
NULL, NULL,
150000, /* Default setting */
0, /* Minimum value */
1000000, 0); /* Maximum value */
#endif /* HAVE_ATOMIC_BUILTINS */
static MYSQL_SYSVAR_ULONG(thread_sleep_delay, srv_thread_sleep_delay,
PLUGIN_VAR_RQCMDARG,
"Time of innodb thread sleeping before joining InnoDB queue (usec). "
"Value 0 disable a sleep",
NULL, NULL,
10000L,
0L,
1000000L, 0);
static MYSQL_SYSVAR_STR(data_file_path, innobase_data_file_path,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"Path to individual files and their sizes.",
NULL, NULL, NULL);
static MYSQL_SYSVAR_STR(undo_directory, srv_undo_dir,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"Directory where undo tablespace files live, this path can be absolute.",
NULL, NULL, ".");
static MYSQL_SYSVAR_ULONG(undo_tablespaces, srv_undo_tablespaces,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"Number of undo tablespaces to use. ",
NULL, NULL,
0L, /* Default seting */
0L, /* Minimum value */
126L, 0); /* Maximum value */
static MYSQL_SYSVAR_ULONG(undo_logs, srv_undo_logs,
PLUGIN_VAR_OPCMDARG,
"Number of undo logs to use.",
NULL, NULL,
TRX_SYS_N_RSEGS, /* Default setting */
1, /* Minimum value */
TRX_SYS_N_RSEGS, 0); /* Maximum value */
/* Alias for innodb_undo_logs, this config variable is deprecated. */
static MYSQL_SYSVAR_ULONG(rollback_segments, srv_undo_logs,
PLUGIN_VAR_OPCMDARG,
"Number of undo logs to use (deprecated).",
NULL, NULL,
TRX_SYS_N_RSEGS, /* Default setting */
1, /* Minimum value */
TRX_SYS_N_RSEGS, 0); /* Maximum value */
static MYSQL_SYSVAR_LONG(autoinc_lock_mode, innobase_autoinc_lock_mode,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"The AUTOINC lock modes supported by InnoDB: "
"0 => Old style AUTOINC locking (for backward"
" compatibility) "
"1 => New style AUTOINC locking "
"2 => No AUTOINC locking (unsafe for SBR)",
NULL, NULL,
AUTOINC_NEW_STYLE_LOCKING, /* Default setting */
AUTOINC_OLD_STYLE_LOCKING, /* Minimum value */
AUTOINC_NO_LOCKING, 0); /* Maximum value */
static MYSQL_SYSVAR_STR(version, innodb_version_str,
PLUGIN_VAR_NOCMDOPT | PLUGIN_VAR_READONLY,
"InnoDB version", NULL, NULL, INNODB_VERSION_STR);
static MYSQL_SYSVAR_BOOL(use_sys_malloc, srv_use_sys_malloc,
PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY,
"DEPRECATED. This option may be removed in future releases, "
"together with the InnoDB's internal memory allocator. "
"Use OS memory allocator instead of InnoDB's internal memory allocator",
NULL, NULL, TRUE);
static MYSQL_SYSVAR_BOOL(use_native_aio, srv_use_native_aio,
PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY,
"Use native AIO if supported on this platform.",
NULL, NULL, TRUE);
#ifdef HAVE_LIBNUMA
static MYSQL_SYSVAR_BOOL(numa_interleave, srv_numa_interleave,
PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY,
"Use NUMA interleave memory policy to allocate InnoDB buffer pool.",
NULL, NULL, FALSE);
#endif // HAVE_LIBNUMA
static MYSQL_SYSVAR_BOOL(api_enable_binlog, ib_binlog_enabled,
PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY,
"Enable binlog for applications direct access InnoDB through InnoDB APIs",
NULL, NULL, FALSE);
static MYSQL_SYSVAR_BOOL(api_enable_mdl, ib_mdl_enabled,
PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY,
"Enable MDL for applications direct access InnoDB through InnoDB APIs",
NULL, NULL, FALSE);
static MYSQL_SYSVAR_BOOL(api_disable_rowlock, ib_disable_row_lock,
PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY,
"Disable row lock when direct access InnoDB through InnoDB APIs",
NULL, NULL, FALSE);
static MYSQL_SYSVAR_ULONG(api_trx_level, ib_trx_level_setting,
PLUGIN_VAR_OPCMDARG,
"InnoDB API transaction isolation level",
NULL, NULL,
0, /* Default setting */
0, /* Minimum value */
3, 0); /* Maximum value */
static MYSQL_SYSVAR_ULONG(api_bk_commit_interval, ib_bk_commit_interval,
PLUGIN_VAR_OPCMDARG,
"Background commit interval in seconds",
NULL, NULL,
5, /* Default setting */
1, /* Minimum value */
1024 * 1024 * 1024, 0); /* Maximum value */
static MYSQL_SYSVAR_STR(change_buffering, innobase_change_buffering,
PLUGIN_VAR_RQCMDARG,
"Buffer changes to reduce random access: "
"OFF, ON, inserting, deleting, changing, or purging.",
innodb_change_buffering_validate,
innodb_change_buffering_update, "all");
static MYSQL_SYSVAR_UINT(change_buffer_max_size,
innobase_change_buffer_max_size,
PLUGIN_VAR_RQCMDARG,
"Maximum on-disk size of change buffer in terms of percentage"
" of the buffer pool.",
NULL, innodb_change_buffer_max_size_update,
CHANGE_BUFFER_DEFAULT_SIZE, 0, 50, 0);
static MYSQL_SYSVAR_ENUM(stats_method, srv_innodb_stats_method,
PLUGIN_VAR_RQCMDARG,
"Specifies how InnoDB index statistics collection code should "
"treat NULLs. Possible values are NULLS_EQUAL (default), "
"NULLS_UNEQUAL and NULLS_IGNORED",
NULL, NULL, SRV_STATS_NULLS_EQUAL, &innodb_stats_method_typelib);
#if defined UNIV_DEBUG || defined UNIV_IBUF_DEBUG
static MYSQL_SYSVAR_UINT(change_buffering_debug, ibuf_debug,
PLUGIN_VAR_RQCMDARG,
"Debug flags for InnoDB change buffering (0=none, 2=crash at merge)",
NULL, NULL, 0, 0, 2, 0);
static MYSQL_SYSVAR_BOOL(disable_background_merge,
srv_ibuf_disable_background_merge,
PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_RQCMDARG,
"Disable change buffering merges by the master thread",
NULL, NULL, FALSE);
#endif /* UNIV_DEBUG || UNIV_IBUF_DEBUG */
static MYSQL_SYSVAR_BOOL(random_read_ahead, srv_random_read_ahead,
PLUGIN_VAR_NOCMDARG,
"Whether to use read ahead for random access within an extent.",
NULL, NULL, FALSE);
static MYSQL_SYSVAR_ULONG(read_ahead_threshold, srv_read_ahead_threshold,
PLUGIN_VAR_RQCMDARG,
"Number of pages that must be accessed sequentially for InnoDB to "
"trigger a readahead.",
NULL, NULL, 56, 0, 64, 0);
static MYSQL_SYSVAR_STR(monitor_enable, innobase_enable_monitor_counter,
PLUGIN_VAR_RQCMDARG,
"Turn on a monitor counter",
innodb_monitor_validate,
innodb_enable_monitor_update, NULL);
static MYSQL_SYSVAR_STR(monitor_disable, innobase_disable_monitor_counter,
PLUGIN_VAR_RQCMDARG,
"Turn off a monitor counter",
innodb_monitor_validate,
innodb_disable_monitor_update, NULL);
static MYSQL_SYSVAR_STR(monitor_reset, innobase_reset_monitor_counter,
PLUGIN_VAR_RQCMDARG,
"Reset a monitor counter",
innodb_monitor_validate,
innodb_reset_monitor_update, NULL);
static MYSQL_SYSVAR_STR(monitor_reset_all, innobase_reset_all_monitor_counter,
PLUGIN_VAR_RQCMDARG,
"Reset all values for a monitor counter",
innodb_monitor_validate,
innodb_reset_all_monitor_update, NULL);
static MYSQL_SYSVAR_BOOL(status_output, srv_print_innodb_monitor,
PLUGIN_VAR_OPCMDARG, "Enable InnoDB monitor output to the error log.",
NULL, innodb_status_output_update, FALSE);
static MYSQL_SYSVAR_BOOL(status_output_locks, srv_print_innodb_lock_monitor,
PLUGIN_VAR_OPCMDARG, "Enable InnoDB lock monitor output to the error log."
" Requires innodb_status_output=ON.",
NULL, innodb_status_output_update, FALSE);
static MYSQL_SYSVAR_BOOL(print_all_deadlocks, srv_print_all_deadlocks,
PLUGIN_VAR_OPCMDARG,
"Print all deadlocks to MySQL error log (off by default)",
NULL, NULL, FALSE);
static MYSQL_SYSVAR_ULONG(compression_failure_threshold_pct,
zip_failure_threshold_pct, PLUGIN_VAR_OPCMDARG,
"If the compression failure rate of a table is greater than this number"
" more padding is added to the pages to reduce the failures. A value of"
" zero implies no padding",
NULL, NULL, 5, 0, 100, 0);
static MYSQL_SYSVAR_ULONG(compression_pad_pct_max,
zip_pad_max, PLUGIN_VAR_OPCMDARG,
"Percentage of empty space on a data page that can be reserved"
" to make the page compressible.",
NULL, NULL, 50, 0, 75, 0);
static MYSQL_SYSVAR_BOOL(read_only, srv_read_only_mode,
PLUGIN_VAR_OPCMDARG | PLUGIN_VAR_READONLY,
"Start InnoDB in read only mode (off by default)",
NULL, NULL, FALSE);
static MYSQL_SYSVAR_BOOL(cmp_per_index_enabled, srv_cmp_per_index_enabled,
PLUGIN_VAR_OPCMDARG,
"Enable INFORMATION_SCHEMA.innodb_cmp_per_index, "
"may have negative impact on performance (off by default)",
NULL, innodb_cmp_per_index_update, FALSE);
#ifdef UNIV_DEBUG
static MYSQL_SYSVAR_UINT(trx_rseg_n_slots_debug, trx_rseg_n_slots_debug,
PLUGIN_VAR_RQCMDARG,
"Debug flags for InnoDB to limit TRX_RSEG_N_SLOTS for trx_rsegf_undo_find_free()",
NULL, NULL, 0, 0, 1024, 0);
static MYSQL_SYSVAR_UINT(limit_optimistic_insert_debug,
btr_cur_limit_optimistic_insert_debug, PLUGIN_VAR_RQCMDARG,
"Artificially limit the number of records per B-tree page (0=unlimited).",
NULL, NULL, 0, 0, UINT_MAX32, 0);
static MYSQL_SYSVAR_BOOL(trx_purge_view_update_only_debug,
srv_purge_view_update_only_debug, PLUGIN_VAR_NOCMDARG,
"Pause actual purging any delete-marked records, but merely update the purge view. "
"It is to create artificially the situation the purge view have been updated "
"but the each purges were not done yet.",
NULL, NULL, FALSE);
static MYSQL_SYSVAR_ULONG(fil_make_page_dirty_debug,
srv_fil_make_page_dirty_debug, PLUGIN_VAR_OPCMDARG,
"Make the first page of the given tablespace dirty.",
NULL, innodb_make_page_dirty, 0, 0, UINT_MAX32, 0);
static MYSQL_SYSVAR_ULONG(saved_page_number_debug,
srv_saved_page_number_debug, PLUGIN_VAR_OPCMDARG,
"An InnoDB page number.",
NULL, innodb_save_page_no, 0, 0, UINT_MAX32, 0);
#endif /* UNIV_DEBUG */
static struct st_mysql_sys_var* innobase_system_variables[]= {
MYSQL_SYSVAR(additional_mem_pool_size),
MYSQL_SYSVAR(api_trx_level),
MYSQL_SYSVAR(api_bk_commit_interval),
MYSQL_SYSVAR(autoextend_increment),
MYSQL_SYSVAR(buffer_pool_size),
MYSQL_SYSVAR(buffer_pool_instances),
MYSQL_SYSVAR(buffer_pool_filename),
MYSQL_SYSVAR(buffer_pool_dump_now),
MYSQL_SYSVAR(buffer_pool_dump_at_shutdown),
#ifdef UNIV_DEBUG
MYSQL_SYSVAR(buffer_pool_evict),
#endif /* UNIV_DEBUG */
MYSQL_SYSVAR(buffer_pool_load_now),
MYSQL_SYSVAR(buffer_pool_load_abort),
MYSQL_SYSVAR(buffer_pool_load_at_startup),
MYSQL_SYSVAR(lru_scan_depth),
MYSQL_SYSVAR(flush_neighbors),
MYSQL_SYSVAR(checksum_algorithm),
MYSQL_SYSVAR(checksums),
MYSQL_SYSVAR(commit_concurrency),
MYSQL_SYSVAR(concurrency_tickets),
MYSQL_SYSVAR(compression_level),
MYSQL_SYSVAR(data_file_path),
MYSQL_SYSVAR(data_home_dir),
MYSQL_SYSVAR(doublewrite),
MYSQL_SYSVAR(api_enable_binlog),
MYSQL_SYSVAR(api_enable_mdl),
MYSQL_SYSVAR(api_disable_rowlock),
MYSQL_SYSVAR(fast_shutdown),
MYSQL_SYSVAR(file_io_threads),
MYSQL_SYSVAR(read_io_threads),
MYSQL_SYSVAR(write_io_threads),
MYSQL_SYSVAR(file_per_table),
MYSQL_SYSVAR(file_format),
MYSQL_SYSVAR(file_format_check),
MYSQL_SYSVAR(file_format_max),
MYSQL_SYSVAR(flush_log_at_timeout),
MYSQL_SYSVAR(flush_log_at_trx_commit),
MYSQL_SYSVAR(flush_method),
MYSQL_SYSVAR(force_recovery),
#ifndef DBUG_OFF
MYSQL_SYSVAR(force_recovery_crash),
#endif /* !DBUG_OFF */
MYSQL_SYSVAR(ft_cache_size),
MYSQL_SYSVAR(ft_total_cache_size),
MYSQL_SYSVAR(ft_result_cache_limit),
MYSQL_SYSVAR(ft_enable_stopword),
MYSQL_SYSVAR(ft_max_token_size),
MYSQL_SYSVAR(ft_min_token_size),
MYSQL_SYSVAR(ft_num_word_optimize),
MYSQL_SYSVAR(ft_sort_pll_degree),
MYSQL_SYSVAR(large_prefix),
MYSQL_SYSVAR(force_load_corrupted),
MYSQL_SYSVAR(locks_unsafe_for_binlog),
MYSQL_SYSVAR(lock_wait_timeout),
#ifdef UNIV_LOG_ARCHIVE
MYSQL_SYSVAR(log_arch_dir),
MYSQL_SYSVAR(log_archive),
#endif /* UNIV_LOG_ARCHIVE */
MYSQL_SYSVAR(page_size),
MYSQL_SYSVAR(log_buffer_size),
MYSQL_SYSVAR(log_file_size),
MYSQL_SYSVAR(log_files_in_group),
MYSQL_SYSVAR(log_group_home_dir),
MYSQL_SYSVAR(log_compressed_pages),
MYSQL_SYSVAR(max_dirty_pages_pct),
MYSQL_SYSVAR(max_dirty_pages_pct_lwm),
MYSQL_SYSVAR(adaptive_flushing_lwm),
MYSQL_SYSVAR(adaptive_flushing),
MYSQL_SYSVAR(flushing_avg_loops),
MYSQL_SYSVAR(max_purge_lag),
MYSQL_SYSVAR(max_purge_lag_delay),
MYSQL_SYSVAR(mirrored_log_groups),
MYSQL_SYSVAR(old_blocks_pct),
MYSQL_SYSVAR(old_blocks_time),
MYSQL_SYSVAR(open_files),
MYSQL_SYSVAR(optimize_fulltext_only),
MYSQL_SYSVAR(rollback_on_timeout),
MYSQL_SYSVAR(ft_aux_table),
MYSQL_SYSVAR(ft_enable_diag_print),
MYSQL_SYSVAR(ft_server_stopword_table),
MYSQL_SYSVAR(ft_user_stopword_table),
MYSQL_SYSVAR(disable_sort_file_cache),
MYSQL_SYSVAR(stats_on_metadata),
MYSQL_SYSVAR(stats_sample_pages),
MYSQL_SYSVAR(stats_transient_sample_pages),
MYSQL_SYSVAR(stats_persistent),
MYSQL_SYSVAR(stats_persistent_sample_pages),
MYSQL_SYSVAR(stats_auto_recalc),
MYSQL_SYSVAR(adaptive_hash_index),
MYSQL_SYSVAR(stats_method),
MYSQL_SYSVAR(replication_delay),
MYSQL_SYSVAR(status_file),
MYSQL_SYSVAR(strict_mode),
MYSQL_SYSVAR(support_xa),
MYSQL_SYSVAR(sort_buffer_size),
MYSQL_SYSVAR(online_alter_log_max_size),
MYSQL_SYSVAR(sync_spin_loops),
MYSQL_SYSVAR(spin_wait_delay),
MYSQL_SYSVAR(table_locks),
MYSQL_SYSVAR(thread_concurrency),
#ifdef HAVE_ATOMIC_BUILTINS
MYSQL_SYSVAR(adaptive_max_sleep_delay),
#endif /* HAVE_ATOMIC_BUILTINS */
MYSQL_SYSVAR(thread_sleep_delay),
MYSQL_SYSVAR(autoinc_lock_mode),
MYSQL_SYSVAR(version),
MYSQL_SYSVAR(use_sys_malloc),
MYSQL_SYSVAR(use_native_aio),
#ifdef HAVE_LIBNUMA
MYSQL_SYSVAR(numa_interleave),
#endif // HAVE_LIBNUMA
MYSQL_SYSVAR(change_buffering),
MYSQL_SYSVAR(change_buffer_max_size),
#if defined UNIV_DEBUG || defined UNIV_IBUF_DEBUG
MYSQL_SYSVAR(change_buffering_debug),
MYSQL_SYSVAR(disable_background_merge),
#endif /* UNIV_DEBUG || UNIV_IBUF_DEBUG */
MYSQL_SYSVAR(random_read_ahead),
MYSQL_SYSVAR(read_ahead_threshold),
MYSQL_SYSVAR(read_only),
MYSQL_SYSVAR(io_capacity),
MYSQL_SYSVAR(io_capacity_max),
MYSQL_SYSVAR(monitor_enable),
MYSQL_SYSVAR(monitor_disable),
MYSQL_SYSVAR(monitor_reset),
MYSQL_SYSVAR(monitor_reset_all),
MYSQL_SYSVAR(purge_threads),
MYSQL_SYSVAR(purge_batch_size),
#ifdef UNIV_DEBUG
MYSQL_SYSVAR(purge_run_now),
MYSQL_SYSVAR(purge_stop_now),
MYSQL_SYSVAR(log_checkpoint_now),
MYSQL_SYSVAR(buf_flush_list_now),
#endif /* UNIV_DEBUG */
#if defined UNIV_DEBUG || defined UNIV_PERF_DEBUG
MYSQL_SYSVAR(page_hash_locks),
MYSQL_SYSVAR(doublewrite_batch_size),
#endif /* defined UNIV_DEBUG || defined UNIV_PERF_DEBUG */
MYSQL_SYSVAR(status_output),
MYSQL_SYSVAR(status_output_locks),
MYSQL_SYSVAR(print_all_deadlocks),
MYSQL_SYSVAR(cmp_per_index_enabled),
MYSQL_SYSVAR(undo_logs),
MYSQL_SYSVAR(rollback_segments),
MYSQL_SYSVAR(undo_directory),
MYSQL_SYSVAR(undo_tablespaces),
MYSQL_SYSVAR(sync_array_size),
MYSQL_SYSVAR(compression_failure_threshold_pct),
MYSQL_SYSVAR(compression_pad_pct_max),
#ifdef UNIV_DEBUG
MYSQL_SYSVAR(trx_rseg_n_slots_debug),
MYSQL_SYSVAR(limit_optimistic_insert_debug),
MYSQL_SYSVAR(trx_purge_view_update_only_debug),
MYSQL_SYSVAR(fil_make_page_dirty_debug),
MYSQL_SYSVAR(saved_page_number_debug),
#endif /* UNIV_DEBUG */
NULL
};
mysql_declare_plugin(innobase)
{
MYSQL_STORAGE_ENGINE_PLUGIN,
&innobase_storage_engine,
innobase_hton_name,
plugin_author,
"Supports transactions, row-level locking, and foreign keys",
PLUGIN_LICENSE_GPL,
innobase_init, /* Plugin Init */
NULL, /* Plugin Deinit */
INNODB_VERSION_SHORT,
innodb_status_variables_export,/* status variables */
innobase_system_variables, /* system variables */
NULL, /* reserved */
0, /* flags */
},
i_s_innodb_trx,
i_s_innodb_locks,
i_s_innodb_lock_waits,
i_s_innodb_cmp,
i_s_innodb_cmp_reset,
i_s_innodb_cmpmem,
i_s_innodb_cmpmem_reset,
i_s_innodb_cmp_per_index,
i_s_innodb_cmp_per_index_reset,
i_s_innodb_buffer_page,
i_s_innodb_buffer_page_lru,
i_s_innodb_buffer_stats,
i_s_innodb_metrics,
i_s_innodb_ft_default_stopword,
i_s_innodb_ft_deleted,
i_s_innodb_ft_being_deleted,
i_s_innodb_ft_config,
i_s_innodb_ft_index_cache,
i_s_innodb_ft_index_table,
i_s_innodb_sys_tables,
i_s_innodb_sys_tablestats,
i_s_innodb_sys_indexes,
i_s_innodb_sys_columns,
i_s_innodb_sys_fields,
i_s_innodb_sys_foreign,
i_s_innodb_sys_foreign_cols,
i_s_innodb_sys_tablespaces,
i_s_innodb_sys_datafiles
mysql_declare_plugin_end;
/** @brief Initialize the default value of innodb_commit_concurrency.
Once InnoDB is running, the innodb_commit_concurrency must not change
from zero to nonzero. (Bug #42101)
The initial default value is 0, and without this extra initialization,
SET GLOBAL innodb_commit_concurrency=DEFAULT would set the parameter
to 0, even if it was initially set to nonzero at the command line
or configuration file. */
static
void
innobase_commit_concurrency_init_default()
/*======================================*/
{
MYSQL_SYSVAR_NAME(commit_concurrency).def_val
= innobase_commit_concurrency;
}
/** @brief Initialize the default and max value of innodb_undo_logs.
Once InnoDB is running, the default value and the max value of
innodb_undo_logs must be equal to the available undo logs,
given by srv_available_undo_logs. */
static
void
innobase_undo_logs_init_default_max()
/*=================================*/
{
MYSQL_SYSVAR_NAME(undo_logs).max_val
= MYSQL_SYSVAR_NAME(undo_logs).def_val
= static_cast<unsigned long>(srv_available_undo_logs);
}
#ifdef UNIV_COMPILE_TEST_FUNCS
struct innobase_convert_name_test_t {
char* buf;
ulint buflen;
const char* id;
ulint idlen;
void* thd;
ibool file_id;
const char* expected;
};
void
test_innobase_convert_name()
{
char buf[1024];
ulint i;
innobase_convert_name_test_t test_input[] = {
{buf, sizeof(buf), "abcd", 4, NULL, TRUE, "\"abcd\""},
{buf, 7, "abcd", 4, NULL, TRUE, "\"abcd\""},
{buf, 6, "abcd", 4, NULL, TRUE, "\"abcd\""},
{buf, 5, "abcd", 4, NULL, TRUE, "\"abc\""},
{buf, 4, "abcd", 4, NULL, TRUE, "\"ab\""},
{buf, sizeof(buf), "ab@0060cd", 9, NULL, TRUE, "\"ab`cd\""},
{buf, 9, "ab@0060cd", 9, NULL, TRUE, "\"ab`cd\""},
{buf, 8, "ab@0060cd", 9, NULL, TRUE, "\"ab`cd\""},
{buf, 7, "ab@0060cd", 9, NULL, TRUE, "\"ab`cd\""},
{buf, 6, "ab@0060cd", 9, NULL, TRUE, "\"ab`c\""},
{buf, 5, "ab@0060cd", 9, NULL, TRUE, "\"ab`\""},
{buf, 4, "ab@0060cd", 9, NULL, TRUE, "\"ab\""},
{buf, sizeof(buf), "ab\"cd", 5, NULL, TRUE,
"\"#mysql50#ab\"\"cd\""},
{buf, 17, "ab\"cd", 5, NULL, TRUE,
"\"#mysql50#ab\"\"cd\""},
{buf, 16, "ab\"cd", 5, NULL, TRUE,
"\"#mysql50#ab\"\"c\""},
{buf, 15, "ab\"cd", 5, NULL, TRUE,
"\"#mysql50#ab\"\"\""},
{buf, 14, "ab\"cd", 5, NULL, TRUE,
"\"#mysql50#ab\""},
{buf, 13, "ab\"cd", 5, NULL, TRUE,
"\"#mysql50#ab\""},
{buf, 12, "ab\"cd", 5, NULL, TRUE,
"\"#mysql50#a\""},
{buf, 11, "ab\"cd", 5, NULL, TRUE,
"\"#mysql50#\""},
{buf, 10, "ab\"cd", 5, NULL, TRUE,
"\"#mysql50\""},
{buf, sizeof(buf), "ab/cd", 5, NULL, TRUE, "\"ab\".\"cd\""},
{buf, 9, "ab/cd", 5, NULL, TRUE, "\"ab\".\"cd\""},
{buf, 8, "ab/cd", 5, NULL, TRUE, "\"ab\".\"c\""},
{buf, 7, "ab/cd", 5, NULL, TRUE, "\"ab\".\"\""},
{buf, 6, "ab/cd", 5, NULL, TRUE, "\"ab\"."},
{buf, 5, "ab/cd", 5, NULL, TRUE, "\"ab\"."},
{buf, 4, "ab/cd", 5, NULL, TRUE, "\"ab\""},
{buf, 3, "ab/cd", 5, NULL, TRUE, "\"a\""},
{buf, 2, "ab/cd", 5, NULL, TRUE, "\"\""},
/* XXX probably "" is a better result in this case
{buf, 1, "ab/cd", 5, NULL, TRUE, "."},
*/
{buf, 0, "ab/cd", 5, NULL, TRUE, ""},
};
for (i = 0; i < sizeof(test_input) / sizeof(test_input[0]); i++) {
char* end;
ibool ok = TRUE;
size_t res_len;
fprintf(stderr, "TESTING %lu, %s, %lu, %s\n",
test_input[i].buflen,
test_input[i].id,
test_input[i].idlen,
test_input[i].expected);
end = innobase_convert_name(
test_input[i].buf,
test_input[i].buflen,
test_input[i].id,
test_input[i].idlen,
test_input[i].thd,
test_input[i].file_id);
res_len = (size_t) (end - test_input[i].buf);
if (res_len != strlen(test_input[i].expected)) {
fprintf(stderr, "unexpected len of the result: %u, "
"expected: %u\n", (unsigned) res_len,
(unsigned) strlen(test_input[i].expected));
ok = FALSE;
}
if (memcmp(test_input[i].buf,
test_input[i].expected,
strlen(test_input[i].expected)) != 0
|| !ok) {
fprintf(stderr, "unexpected result: %.*s, "
"expected: %s\n", (int) res_len,
test_input[i].buf,
test_input[i].expected);
ok = FALSE;
}
if (ok) {
fprintf(stderr, "OK: res: %.*s\n\n", (int) res_len,
buf);
} else {
fprintf(stderr, "FAILED\n\n");
return;
}
}
}
#endif /* UNIV_COMPILE_TEST_FUNCS */
/****************************************************************************
* DS-MRR implementation
***************************************************************************/
/**
* Multi Range Read interface, DS-MRR calls
*/
int
ha_innobase::multi_range_read_init(
RANGE_SEQ_IF* seq,
void* seq_init_param,
uint n_ranges,
uint mode,
HANDLER_BUFFER* buf)
{
return(ds_mrr.dsmrr_init(this, seq, seq_init_param,
n_ranges, mode, buf));
}
int
ha_innobase::multi_range_read_next(
char** range_info)
{
return(ds_mrr.dsmrr_next(range_info));
}
ha_rows
ha_innobase::multi_range_read_info_const(
uint keyno,
RANGE_SEQ_IF* seq,
void* seq_init_param,
uint n_ranges,
uint* bufsz,
uint* flags,
Cost_estimate* cost)
{
/* See comments in ha_myisam::multi_range_read_info_const */
ds_mrr.init(this, table);
return(ds_mrr.dsmrr_info_const(keyno, seq, seq_init_param,
n_ranges, bufsz, flags, cost));
}
ha_rows
ha_innobase::multi_range_read_info(
uint keyno,
uint n_ranges,
uint keys,
uint* bufsz,
uint* flags,
Cost_estimate* cost)
{
ds_mrr.init(this, table);
return(ds_mrr.dsmrr_info(keyno, n_ranges, keys, bufsz, flags, cost));
}
/**
* Index Condition Pushdown interface implementation
*/
/*************************************************************//**
InnoDB index push-down condition check
@return ICP_NO_MATCH, ICP_MATCH, or ICP_OUT_OF_RANGE */
UNIV_INTERN
enum icp_result
innobase_index_cond(
/*================*/
void* file) /*!< in/out: pointer to ha_innobase */
{
DBUG_ENTER("innobase_index_cond");
ha_innobase* h = reinterpret_cast<class ha_innobase*>(file);
DBUG_ASSERT(h->pushed_idx_cond);
DBUG_ASSERT(h->pushed_idx_cond_keyno != MAX_KEY);
if (h->end_range && h->compare_key_icp(h->end_range) > 0) {
/* caller should return HA_ERR_END_OF_FILE already */
DBUG_RETURN(ICP_OUT_OF_RANGE);
}
DBUG_RETURN(h->pushed_idx_cond->val_int() ? ICP_MATCH : ICP_NO_MATCH);
}
/** Attempt to push down an index condition.
* @param[in] keyno MySQL key number
* @param[in] idx_cond Index condition to be checked
* @return Part of idx_cond which the handler will not evaluate
*/
UNIV_INTERN
class Item*
ha_innobase::idx_cond_push(
uint keyno,
class Item* idx_cond)
{
DBUG_ENTER("ha_innobase::idx_cond_push");
DBUG_ASSERT(keyno != MAX_KEY);
DBUG_ASSERT(idx_cond != NULL);
pushed_idx_cond = idx_cond;
pushed_idx_cond_keyno = keyno;
in_range_check_pushed_down = TRUE;
/* We will evaluate the condition entirely */
DBUG_RETURN(NULL);
}
/******************************************************************//**
Use this when the args are passed to the format string from
errmsg-utf8.txt directly as is.
Push a warning message to the client, it is a wrapper around:
void push_warning_printf(
THD *thd, Sql_condition::enum_warning_level level,
uint code, const char *format, ...);
*/
UNIV_INTERN
void
ib_senderrf(
/*========*/
THD* thd, /*!< in/out: session */
ib_log_level_t level, /*!< in: warning level */
ib_uint32_t code, /*!< MySQL error code */
...) /*!< Args */
{
char* str;
va_list args;
const char* format = innobase_get_err_msg(code);
/* If the caller wants to push a message to the client then
the caller must pass a valid session handle. */
ut_a(thd != 0);
/* The error code must exist in the errmsg-utf8.txt file. */
ut_a(format != 0);
va_start(args, code);
#ifdef __WIN__
int size = _vscprintf(format, args) + 1;
str = static_cast<char*>(malloc(size));
str[size - 1] = 0x0;
vsnprintf(str, size, format, args);
#elif HAVE_VASPRINTF
int ret;
ret = vasprintf(&str, format, args);
ut_a(ret != -1);
#else
/* Use a fixed length string. */
str = static_cast<char*>(malloc(BUFSIZ));
my_vsnprintf(str, BUFSIZ, format, args);
#endif /* __WIN__ */
Sql_condition::enum_warning_level l;
l = Sql_condition::WARN_LEVEL_NOTE;
switch(level) {
case IB_LOG_LEVEL_INFO:
break;
case IB_LOG_LEVEL_WARN:
l = Sql_condition::WARN_LEVEL_WARN;
break;
case IB_LOG_LEVEL_ERROR:
/* We can't use push_warning_printf(), it is a hard error. */
my_printf_error(code, "%s", MYF(0), str);
break;
case IB_LOG_LEVEL_FATAL:
l = Sql_condition::WARN_LEVEL_END;
break;
}
if (level != IB_LOG_LEVEL_ERROR) {
push_warning_printf(thd, l, code, "InnoDB: %s", str);
}
va_end(args);
free(str);
if (level == IB_LOG_LEVEL_FATAL) {
ut_error;
}
}
/******************************************************************//**
Use this when the args are first converted to a formatted string and then
passed to the format string from errmsg-utf8.txt. The error message format
must be: "Some string ... %s".
Push a warning message to the client, it is a wrapper around:
void push_warning_printf(
THD *thd, Sql_condition::enum_warning_level level,
uint code, const char *format, ...);
*/
UNIV_INTERN
void
ib_errf(
/*====*/
THD* thd, /*!< in/out: session */
ib_log_level_t level, /*!< in: warning level */
ib_uint32_t code, /*!< MySQL error code */
const char* format, /*!< printf format */
...) /*!< Args */
{
char* str;
va_list args;
/* If the caller wants to push a message to the client then
the caller must pass a valid session handle. */
ut_a(thd != 0);
ut_a(format != 0);
va_start(args, format);
#ifdef __WIN__
int size = _vscprintf(format, args) + 1;
str = static_cast<char*>(malloc(size));
str[size - 1] = 0x0;
vsnprintf(str, size, format, args);
#elif HAVE_VASPRINTF
int ret;
ret = vasprintf(&str, format, args);
ut_a(ret != -1);
#else
/* Use a fixed length string. */
str = static_cast<char*>(malloc(BUFSIZ));
my_vsnprintf(str, BUFSIZ, format, args);
#endif /* __WIN__ */
ib_senderrf(thd, level, code, str);
va_end(args);
free(str);
}
/******************************************************************//**
Write a message to the MySQL log, prefixed with "InnoDB: " */
UNIV_INTERN
void
ib_logf(
/*====*/
ib_log_level_t level, /*!< in: warning level */
const char* format, /*!< printf format */
...) /*!< Args */
{
char* str;
va_list args;
va_start(args, format);
#ifdef __WIN__
int size = _vscprintf(format, args) + 1;
str = static_cast<char*>(malloc(size));
str[size - 1] = 0x0;
vsnprintf(str, size, format, args);
#elif HAVE_VASPRINTF
int ret;
ret = vasprintf(&str, format, args);
ut_a(ret != -1);
#else
/* Use a fixed length string. */
str = static_cast<char*>(malloc(BUFSIZ));
my_vsnprintf(str, BUFSIZ, format, args);
#endif /* __WIN__ */
switch(level) {
case IB_LOG_LEVEL_INFO:
sql_print_information("InnoDB: %s", str);
break;
case IB_LOG_LEVEL_WARN:
sql_print_warning("InnoDB: %s", str);
break;
case IB_LOG_LEVEL_ERROR:
sql_print_error("InnoDB: %s", str);
break;
case IB_LOG_LEVEL_FATAL:
sql_print_error("InnoDB: %s", str);
break;
}
va_end(args);
free(str);
if (level == IB_LOG_LEVEL_FATAL) {
ut_error;
}
}
/**********************************************************************
Converts an identifier from my_charset_filename to UTF-8 charset.
@return result string length, as returned by strconvert() */
uint
innobase_convert_to_filename_charset(
/*=================================*/
char* to, /* out: converted identifier */
const char* from, /* in: identifier to convert */
ulint len) /* in: length of 'to', in bytes */
{
uint errors;
CHARSET_INFO* cs_to = &my_charset_filename;
CHARSET_INFO* cs_from = system_charset_info;
return(strconvert(
cs_from, from, cs_to, to, static_cast<uint>(len), &errors));
}
/**********************************************************************
Converts an identifier from my_charset_filename to UTF-8 charset.
@return result string length, as returned by strconvert() */
uint
innobase_convert_to_system_charset(
/*===============================*/
char* to, /* out: converted identifier */
const char* from, /* in: identifier to convert */
ulint len, /* in: length of 'to', in bytes */
uint* errors) /* out: error return */
{
CHARSET_INFO* cs1 = &my_charset_filename;
CHARSET_INFO* cs2 = system_charset_info;
return(strconvert(
cs1, from, cs2, to, static_cast<uint>(len), errors));
}
/**********************************************************************
Issue a warning that the row is too big. */
void
ib_warn_row_too_big(const dict_table_t* table)
{
/* If prefix is true then a 768-byte prefix is stored
locally for BLOB fields. Refer to dict_table_get_format() */
const bool prefix = (dict_tf_get_format(table->flags)
== UNIV_FORMAT_A);
const ulint free_space = page_get_free_space_of_empty(
table->flags & DICT_TF_COMPACT) / 2;
THD* thd = current_thd;
push_warning_printf(
thd, Sql_condition::WARN_LEVEL_WARN, HA_ERR_TO_BIG_ROW,
"Row size too large (> %lu). Changing some columns to TEXT"
" or BLOB %smay help. In current row format, BLOB prefix of"
" %d bytes is stored inline.", free_space
, prefix ? "or using ROW_FORMAT=DYNAMIC or"
" ROW_FORMAT=COMPRESSED ": ""
, prefix ? DICT_MAX_FIXED_COL_LEN : 0);
}