mariadb/plugin/semisync/semisync.h

/* Copyright (C) 2007 Google Inc.
   Copyright (C) 2008 MySQL AB

   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 St, Fifth Floor, Boston, MA  02110-1301  USA */


#ifndef SEMISYNC_H
#define SEMISYNC_H

#include <stdint.h>
#include <string.h>
#include <assert.h>
#include <sys/time.h>
#include <time.h>
#include <stdio.h>
#include <pthread.h>
#include <mysql.h>

typedef uint32_t uint32;
typedef unsigned long long my_off_t;
#define FN_REFLEN	512	/* Max length of full path-name */
void sql_print_error(const char *format, ...);
void sql_print_warning(const char *format, ...);
void sql_print_information(const char *format, ...);
extern unsigned long max_connections;

#define MYSQL_SERVER
#define HAVE_REPLICATION
#include <my_global.h>
#include <my_pthread.h>
#include <mysql/plugin.h>
#include <replication.h>

typedef struct st_mysql_show_var SHOW_VAR;
typedef struct st_mysql_sys_var SYS_VAR;


/**
   This class is used to trace function calls and other process
   information
*/
class Trace {
public:
  static const unsigned long kTraceFunction;
  static const unsigned long kTraceGeneral;
  static const unsigned long kTraceDetail;
  static const unsigned long kTraceNetWait;

  unsigned long           trace_level_;                      /* the level for tracing */

  inline void function_enter(const char *func_name)
  {
    if (trace_level_ & kTraceFunction)
      sql_print_information("---> %s enter", func_name);
  }
  inline int  function_exit(const char *func_name, int exit_code)
  {
    if (trace_level_ & kTraceFunction)
      sql_print_information("<--- %s exit (%d)", func_name, exit_code);
    return exit_code;
  }

  Trace()
    :trace_level_(0L)
  {}
  Trace(unsigned long trace_level)
    :trace_level_(trace_level)
  {}
};

/**
   Base class for semi-sync master and slave classes
*/
class ReplSemiSyncBase
  :public Trace {
public:
  static const char  kSyncHeader[2];              /* three byte packet header */

  /* Constants in network packet header. */
  static const unsigned char kPacketMagicNum;
  static const unsigned char kPacketFlagSync;
};

#endif /* SEMISYNC_H */