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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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* Copyright (C) 2008 Sun Microsystems
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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/* Copyright (C) 2005 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#include <drizzled/replication/tblmap.h>
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#include <drizzled/replication/reporting.h>
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#include <drizzled/replication/utility.h>
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#include "rpl_tblmap.h"
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#include "rpl_reporting.h"
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#include "rpl_utility.h"
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struct RPL_TABLE_LIST;
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/****************************************************************************
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created temporary tables. Modified only on init/end and by the SQL
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thread, read only by SQL thread.
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Table *save_temporary_tables;
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TABLE *save_temporary_tables;
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standard lock acquistion order to avoid deadlocks:
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happen when, for example, the relay log gets rotated because of
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std::string group_relay_log_name;
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uint64_t group_relay_log_pos;
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std::string event_relay_log_name;
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uint64_t event_relay_log_pos;
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uint64_t future_event_relay_log_pos;
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char group_relay_log_name[FN_REFLEN];
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ulonglong group_relay_log_pos;
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char event_relay_log_name[FN_REFLEN];
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ulonglong event_relay_log_pos;
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ulonglong future_event_relay_log_pos;
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#ifdef HAVE_purify
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bool is_fake; /* Mark that this is a fake relay log info structure */
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Original log name and position of the group we're currently executing
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(whose coordinates are group_relay_log_name/pos in the relay log)
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in the master's binlog. These concern the *group*, because in the master's
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binlog the log_pos that comes with each event is the position of the
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beginning of the group.
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std::string group_master_log_name;
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char group_master_log_name[FN_REFLEN];
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volatile my_off_t group_master_log_pos;
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threads, the SQL thread sets it to unblock the I/O thread and make it
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temporarily forget about the constraint.
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uint64_t log_space_limit,log_space_total;
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ulonglong log_space_limit,log_space_total;
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bool ignore_log_space_limit;
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committing event (the COMMIT query event, or the event if in autocommit
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uint64_t future_group_master_log_pos;
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#if MYSQL_VERSION_ID < 40100
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ulonglong future_master_log_pos;
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ulonglong future_group_master_log_pos;
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time_t last_master_timestamp;
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skipping one or more events in the master log that have caused
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errors, and have been manually applied by DBA already.
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volatile uint32_t slave_skip_counter;
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volatile uint32_t abort_pos_wait; /* Incremented on change master */
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volatile uint32_t slave_run_id; /* Incremented on slave start */
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volatile uint32 slave_skip_counter;
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volatile ulong abort_pos_wait; /* Incremented on change master */
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volatile ulong slave_run_id; /* Incremented on slave start */
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pthread_mutex_t log_space_lock;
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pthread_cond_t log_space_cond;
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Session * sql_session;
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int32_t events_till_abort;
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int events_till_abort;
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/* if not set, the value of other members of the structure are undefined */
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volatile bool abort_slave;
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volatile uint32_t slave_running;
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volatile uint slave_running;
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Condition and its parameters from START SLAVE UNTIL clause.
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UNTIL condition is tested with is_until_satisfied() method that is
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UNTIL condition is tested with is_until_satisfied() method that is
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called by exec_relay_log_event(). is_until_satisfied() caches the result
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of the comparison of log names because log names don't change very often;
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this cache is invalidated by parts of code which change log names with
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notify_*_log_name_updated() methods. (They need to be called only if SQL
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thread is running).
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enum {UNTIL_NONE= 0, UNTIL_MASTER_POS, UNTIL_RELAY_POS} until_condition;
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char until_log_name[FN_REFLEN];
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uint64_t until_log_pos;
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/* extension extracted from log_name and converted to int32_t */
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uint32_t until_log_name_extension;
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ulonglong until_log_pos;
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/* extension extracted from log_name and converted to int */
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ulong until_log_name_extension;
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Cached result of comparison of until_log_name and current log name
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-2 means unitialised, -1,0,1 are comarison results
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-2 means unitialised, -1,0,1 are comarison results
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UNTIL_LOG_NAMES_CMP_UNKNOWN= -2, UNTIL_LOG_NAMES_CMP_LESS= -1,
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UNTIL_LOG_NAMES_CMP_EQUAL= 0, UNTIL_LOG_NAMES_CMP_GREATER= 1
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} until_log_names_cmp_result;
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char cached_charset[6];
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trans_retries varies between 0 to slave_transaction_retries and counts how
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many times the slave has retried the present transaction; gets reset to 0
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are both protected by rli->relay_log.LOCK_log.
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char ign_master_log_name_end[FN_REFLEN];
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uint64_t ign_master_log_pos_end;
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ulonglong ign_master_log_pos_end;
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Relay_log_info();
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~Relay_log_info();
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Invalidate cached until_log_name and group_relay_log_name comparison
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Invalidate cached until_log_name and group_relay_log_name comparison
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result. Should be called after any update of group_realy_log_name if
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there chances that sql_thread is running.
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The same as previous but for group_master_log_name.
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The same as previous but for group_master_log_name.
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inline void notify_group_master_log_name_update()
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if (until_condition==UNTIL_MASTER_POS)
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until_log_names_cmp_result= UNTIL_LOG_NAMES_CMP_UNKNOWN;
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inline void inc_event_relay_log_pos()
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event_relay_log_pos= future_event_relay_log_pos;
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void inc_group_relay_log_pos(uint64_t log_pos,
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void inc_group_relay_log_pos(ulonglong log_pos,
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bool skip_lock=0);
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int32_t wait_for_pos(Session* session, String* log_name, int64_t log_pos,
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int wait_for_pos(THD* thd, String* log_name, longlong log_pos,
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void close_temporary_tables();
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/* Check if UNTIL condition is satisfied. See slave.cc for more. */
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bool is_until_satisfied(my_off_t master_beg_pos);
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inline uint64_t until_pos()
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inline ulonglong until_pos()
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return ((until_condition == UNTIL_MASTER_POS) ? group_master_log_pos :
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group_relay_log_pos);
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RPL_TableList *tables_to_lock; /* RBR: Tables to lock */
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uint32_t tables_to_lock_count; /* RBR: Count of tables to lock */
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RPL_TABLE_LIST *tables_to_lock; /* RBR: Tables to lock */
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uint tables_to_lock_count; /* RBR: Count of tables to lock */
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table_mapping m_table_map; /* RBR: Mapping table-id to table */
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inline table_def *get_tabledef(Table *tbl)
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inline table_def *get_tabledef(TABLE *tbl)
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table_def *td= 0;
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for (TableList *ptr= tables_to_lock; ptr && !td; ptr= ptr->next_global)
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for (TABLE_LIST *ptr= tables_to_lock; ptr && !td; ptr= ptr->next_global)
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if (ptr->table == tbl)
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td= &((RPL_TableList *)ptr)->m_tabledef;
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td= &((RPL_TABLE_LIST *)ptr)->m_tabledef;
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void cleanup_context(Session *, bool);
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Last charset (6 bytes) seen by slave SQL thread is cached here; it helps
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the thread save 3 get_charset() per Query_log_event if the charset is not
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changing from event to event (common situation).
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When the 6 bytes are equal to 0 is used to mean "cache is invalidated".
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void cached_charset_invalidate();
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bool cached_charset_compare(char *charset) const;
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void cleanup_context(THD *, bool);
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void clear_tables_to_lock();
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@retval true Replication thread is currently inside a group
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@retval false Replication thread is currently not inside a group
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bool is_in_group() const;
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bool is_in_group() const {
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return (sql_thd->options & OPTION_BEGIN) ||
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(m_flags & (1UL << IN_STMT));
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// Defined in rpl_rli.cc
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int32_t init_relay_log_info(Relay_log_info* rli, const char* info_fname);
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int init_relay_log_info(Relay_log_info* rli, const char* info_fname);
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#endif /* RPL_RLI_H */