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c009ce7dd0
This is a backport of commit4489a89c71in order to remove the test innodb.redo_log_during_checkpoint that would cause trouble in the DBUG subsystem invoked by safe_mutex_lock() via log_checkpoint(). Before commit7cffb5f6e8these mutexes were of different type. The following options were introduced in commit2e814d4702(mariadb-10.2.2) and have little use: innodb_disable_resize_buffer_pool_debug had no effect even in MariaDB 10.2.2 or MySQL 5.7.9. It was introduced in mysql/mysql-server@5c4094cf49 to work around a problem that was fixed in mysql/mysql-server@2957ae4f99 (but the parameter was not removed). innodb_page_cleaner_disabled_debug and innodb_master_thread_disabled_debug are only used by the test innodb.redo_log_during_checkpoint that will be removed as part of this commit. innodb_dict_stats_disabled_debug is only used by that test, and it is redundant because one could simply use innodb_stats_persistent=OFF or the STATS_PERSISTENT=0 attribute of the table in the test to achieve the same effect.
109 lines
3.9 KiB
C
109 lines
3.9 KiB
C
/*****************************************************************************
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Copyright (c) 2012, 2017, Oracle and/or its affiliates. All Rights Reserved.
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Copyright (c) 2017, 2022, MariaDB Corporation.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
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*****************************************************************************/
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/**************************************************//**
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@file include/dict0stats_bg.h
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Code used for background table and index stats gathering.
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Created Apr 26, 2012 Vasil Dimov
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*******************************************************/
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#ifndef dict0stats_bg_h
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#define dict0stats_bg_h
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#include "dict0types.h"
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#include "os0thread.h"
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#ifdef HAVE_PSI_INTERFACE
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extern mysql_pfs_key_t dict_stats_recalc_pool_mutex_key;
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#endif /* HAVE_PSI_INTERFACE */
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/*****************************************************************//**
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Delete a given table from the auto recalc pool.
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dict_stats_recalc_pool_del() */
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void
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dict_stats_recalc_pool_del(
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/*=======================*/
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const dict_table_t* table); /*!< in: table to remove */
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/** Yield the data dictionary latch when waiting
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for the background thread to stop accessing a table.
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@param trx transaction holding the data dictionary locks */
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#define DICT_BG_YIELD(trx) do { \
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row_mysql_unlock_data_dictionary(trx); \
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os_thread_sleep(250000); \
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row_mysql_lock_data_dictionary(trx); \
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} while (0)
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/*****************************************************************//**
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Request the background collection of statistics to stop for a table.
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@retval true when no background process is active
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@retval false when it is not safe to modify the table definition */
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UNIV_INLINE
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bool
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dict_stats_stop_bg(
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/*===============*/
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dict_table_t* table) /*!< in/out: table */
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{
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ut_ad(!srv_read_only_mode);
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ut_ad(mutex_own(&dict_sys.mutex));
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if (!(table->stats_bg_flag & BG_STAT_IN_PROGRESS)) {
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return(true);
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}
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table->stats_bg_flag |= BG_STAT_SHOULD_QUIT;
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return(false);
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}
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/*****************************************************************//**
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Wait until background stats thread has stopped using the specified table.
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The caller must have locked the data dictionary using
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row_mysql_lock_data_dictionary() and this function may unlock it temporarily
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and restore the lock before it exits.
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The background stats thread is guaranteed not to start using the specified
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table after this function returns and before the caller unlocks the data
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dictionary because it sets the BG_STAT_IN_PROGRESS bit in table->stats_bg_flag
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under dict_sys.mutex. */
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void
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dict_stats_wait_bg_to_stop_using_table(
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/*===================================*/
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dict_table_t* table, /*!< in/out: table */
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trx_t* trx); /*!< in/out: transaction to use for
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unlocking/locking the data dict */
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/*****************************************************************//**
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Initialize global variables needed for the operation of dict_stats_thread().
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Must be called before dict_stats task is started. */
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void dict_stats_init();
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/*****************************************************************//**
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Free resources allocated by dict_stats_thread_init(), must be called
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after dict_stats task has exited. */
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void dict_stats_deinit();
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/** Start the dict stats timer. */
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void dict_stats_start();
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/** Shut down the dict_stats timer. */
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void dict_stats_shutdown();
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/** Reschedule dict stats timer to run now. */
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void dict_stats_schedule_now();
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#endif /* dict0stats_bg_h */
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