mariadb

Tree: bc4a456758

Author	SHA1	Message	Date
Sergei Golubchik	0accbd0364	lots of post-merge changes	15 years ago
He Zhenxing	6429e7d36b	BUG#47027 delegates_init() failure is not user friendly (usability issue) Function delegetas_init() did not report proper error messages when there are failures, which made it hard to know where the problem occurred. Fixed the problem by adding specific error message for every possible place that can fail. And since these failures are supposed to never happen, ask the user to report a bug if they happened.	15 years ago
Davi Arnaut	4bb985ffd7	Bug#42733: Type-punning warnings when compiling MySQL -- strict aliasing violations. Silence bogus aliasing warning through a pointer indirection. Also, no need to check the return of a placement new.	16 years ago
Davi Arnaut	f56dd32bf7	Bug#34043: Server loops excessively in _checkchunk() when safemalloc is enabled Essentially, the problem is that safemalloc is excruciatingly slow as it checks all allocated blocks for overrun at each memory management primitive, yielding a almost exponential slowdown for the memory management functions (malloc, realloc, free). The overrun check basically consists of verifying some bytes of a block for certain magic keys, which catches some simple forms of overrun. Another minor problem is violation of aliasing rules and that its own internal list of blocks is prone to corruption. Another issue with safemalloc is rather the maintenance cost as the tool has a significant impact on the server code. Given the magnitude of memory debuggers available nowadays, especially those that are provided with the platform malloc implementation, maintenance of a in-house and largely obsolete memory debugger becomes a burden that is not worth the effort due to its slowness and lack of support for detecting more common forms of heap corruption. Since there are third-party tools that can provide the same functionality at a lower or comparable performance cost, the solution is to simply remove safemalloc. Third-party tools can provide the same functionality at a lower or comparable performance cost. The removal of safemalloc also allows a simplification of the malloc wrappers, removing quite a bit of kludge: redefinition of my_malloc, my_free and the removal of the unused second argument of my_free. Since free() always check whether the supplied pointer is null, redudant checks are also removed. Also, this patch adds unit testing for my_malloc and moves my_realloc implementation into the same file as the other memory allocation primitives. client/mysqldump.c: Pass my_free directly as its signature is compatible with the callback type -- which wasn't the case for free_table_ent.	16 years ago
Tor Didriksen	85da8956e6	Bug #53445 Build with -Wall and fix warnings that it generates Add -Wall to gcc/g++ Fix most warnings reported in dbg and opt mode. cmd-line-utils/libedit/filecomplete.c: Remove unused auto variables. configure.cmake: Add -Wall to gcc. extra/comp_err.c: Cast to correct type. extra/perror.c: Fix segfault (but warnings about deprecated features remain) extra/yassl/taocrypt/include/runtime.hpp: Comparing two literals was reported as undefined behaviour. include/my_global.h: Add a template for aligning character buffers. mysys/lf_alloc-pin.c: Initialize pointer. sql/mysqld.cc: Use UNINIT_VAR rather than LINT_INIT. sql/partition_info.cc: Use UNINIT_VAR rather than LINT_INIT. sql/rpl_handler.cc: Use char[] rather than unsigned long[] array for placement buffer. sql/spatial.cc: Use char[] rather than unsigned void[] array for placement buffer. sql/spatial.h: Use char[] rather than unsigned void[] array for placement buffer. sql/sql_partition.cc: Initialize auto variable. sql/sql_table.cc: Initialize auto variables. Add parens around assignment within if() sql/sys_vars.cc: Use UNINIT_VAR. storage/innobase/os/os0file.c: Init first slot in auto variable. storage/myisam/mi_create.c: Use UNINIT_VAR rather than LINT_INIT. storage/myisam/mi_open.c: Remove (wrong) casting. storage/myisam/mi_page.c: Remove (wrong) casting. storage/myisam/mi_search.c: Cast to uchar* rather than char. strings/ctype-ucs2.c: Use UNINIT_VAR rather than LINT_INIT. Add (uchar) casting.	16 years ago
Mats Kindahl	23d8586dbf	WL#5030: Split and remove mysql_priv.h This patch: - Moves all definitions from the mysql_priv.h file into header files for the component where the variable is defined - Creates header files if the component lacks one - Eliminates all include directives from mysql_priv.h - Eliminates all circular include cycles - Rename time.cc to sql_time.cc - Rename mysql_priv.h to sql_priv.h	16 years ago
unknown	a1bfae20cb	BUG#50157 Assertion !active_tranxs_->is_tranx_end_pos(..) in ReplSemiSyncMaster::commitTrx The root cause of the crash is that a TranxNode is freed before it is used. A TranxNode is allocated and inserted into the active list each time a log event is written and flushed into the binlog file. The memory for TranxNode is allocated with thd_alloc and will be freed at the end of the statement. The after_commit/after_rollback callback was supposed to be called before the end of each statement and remove the node from the active list. However this assumption is not correct in all cases(e.g. call 'CREATE TEMPORARY TABLE myisam_t SELECT * FROM innodb_t' in a transaction and delete all temporary tables automatically when a session closed), and can cause the memory allocated for TranxNode be freed before it was removed from the active list. So The TranxNode pointer in the active list would become a wild pointer and cause the crash. After this patch, We have a class called a TranxNodeAllocate which manages the memory for allocating and freeing TranxNode. It uses my_malloc to allocate memory. sql/rpl_handler.cc: params are not initialized.	16 years ago
He Zhenxing	c926610d7c	Bug#49020 Semi-sync master crashed with free_pool == NULL, assertion `free_pool_' Before this patch, semisync assumed transactions running in parallel can not be larger than max_connections, but this is not true when the event scheduler is executing events, and cause semisync run out of preallocated transaction nodes. Fix the problem by allocating transaction nodes dynamically. This patch also fixed a possible deadlock when running UNINSTALL PLUGIN rpl_semi_sync_master and updating in parallel. Fixed by releasing the internal Delegate lock before unlock the plugins. mysql-test/suite/rpl/t/rpl_semi_sync_event.test: Add test case for bug#49020 plugin/semisync/semisync_master.cc: Allocating TranxNode dynamically plugin/semisync/semisync_master.h: Allocating TranxNode dynamically sql/rpl_handler.cc: Unlock plugins after we have released the Delegate lock to avoid possible deadlock when uninstalling semisync master plugin and doing update in parallel.	16 years ago
Alexander Nozdrin	42cdc4df8f	Fix automerge: s/hash_search/my_hash_search/.	16 years ago
He Zhenxing	43fe9e045c	Backporting BUG#40244 Optimized build of mysqld crashes when built with Sun Studio on SPARC	16 years ago
He Zhenxing	623ed58cfd	Backporting WL#4398 WL#1720 Backporting BUG#44058 BUG#42244 BUG#45672 BUG#45673 Backporting BUG#45819 BUG#45973 BUG#39012	16 years ago

18 Commits (bc4a456758c8077e5377b8cfaed60af4311653a0)