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/*****************************************************************************
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Copyright (c) 1995, 2010, Innobase Oy. All Rights Reserved.
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Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved.
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Copyright (c) 2008, 2009, Google Inc.
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Copyright (c) 2009, Percona Inc.
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Portions of this file contain modifications contributed and copyrighted by
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Google, Inc. Those modifications are gratefully acknowledged and are described
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incorporated with their permission, and subject to the conditions contained in
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the file COPYING.Google.
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Portions of this file contain modifications contributed and copyrighted
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by Percona Inc.. Those modifications are
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gratefully acknowledged and are described briefly in the InnoDB
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documentation. The contributions by Percona Inc. are incorporated with
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their permission, and subject to the conditions contained in the file
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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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St, Fifth Floor, Boston, MA 02110-1301 USA
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*****************************************************************************/
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/***********************************************************************
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Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved.
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Copyright (c) 2009, Percona Inc.
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Portions of this file contain modifications contributed and copyrighted
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by Percona Inc.. Those modifications are
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gratefully acknowledged and are described briefly in the InnoDB
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documentation. The contributions by Percona Inc. are incorporated with
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their permission, and subject to the conditions contained in the file
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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***********************************************************************/
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/**************************************************//**
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@file include/srv0srv.h
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/** Whether to check file format during startup. A value of
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DICT_TF_FORMAT_MAX + 1 means no checking ie. FALSE. The default is to
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set it to the highest format we support. */
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extern ulint srv_max_file_format_at_startup;
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extern ulint srv_check_file_format_at_startup;
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/** Place locks to records only i.e. do not use next-key locking except
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on duplicate key checking and foreign key checking */
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extern ibool srv_locks_unsafe_for_binlog;
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#endif /* !UNIV_HOTBACKUP */
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/* If this flag is TRUE, then we will use the native aio of the
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OS (provided we compiled Innobase with it in), otherwise we will
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use simulated aio we build below with threads.
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Currently we support native aio on windows and linux */
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extern my_bool srv_use_native_aio;
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extern ibool srv_use_native_conditions;
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extern ulint srv_n_data_files;
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extern char** srv_data_file_names;
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extern ulint* srv_data_file_sizes;
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# endif /* UNIV_HOTBACKUP */
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#endif /* BUILD_DRIZZLE */
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extern ulint srv_buf_pool_size; /*!< requested size in bytes */
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extern ulint srv_buf_pool_instances; /*!< requested number of buffer pool instances */
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extern ulint srv_buf_pool_old_size; /*!< previously requested size */
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extern ulint srv_buf_pool_curr_size; /*!< current size in bytes */
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extern ulint srv_mem_pool_size;
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#define PCT_IO(p) ((ulong) (srv_io_capacity * ((double) p / 100.0)))
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#ifdef UNIV_LOG_ARCHIVE
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extern ibool srv_log_archive_on;
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extern ibool srv_archive_recovery;
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extern ib_uint64_t srv_archive_recovery_limit_lsn;
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extern ibool srv_log_archive_on;
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extern ibool srv_archive_recovery;
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extern dulint srv_archive_recovery_limit_lsn;
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#endif /* UNIV_LOG_ARCHIVE */
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extern char* srv_file_flush_method_str;
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extern ibool srv_print_verbose_log;
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extern ibool srv_print_innodb_table_monitor;
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extern ibool srv_lock_timeout_active;
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extern ibool srv_monitor_active;
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extern ibool srv_lock_timeout_and_monitor_active;
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extern ibool srv_error_monitor_active;
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extern ulong srv_n_spin_wait_rounds;
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log buffer and have to flush it */
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extern ulint srv_log_waits;
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/* the number of purge threads to use from the worker pool (currently 0 or 1) */
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extern ulong srv_n_purge_threads;
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/* the number of records to purge in one batch */
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extern ulong srv_purge_batch_size;
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/* variable that counts amount of data read in total (in bytes) */
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extern ulint srv_data_read;
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/** The server system */
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extern srv_sys_t* srv_sys;
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# ifdef UNIV_PFS_THREAD
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/* Keys to register InnoDB threads with performance schema */
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extern mysql_pfs_key_t trx_rollback_clean_thread_key;
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extern mysql_pfs_key_t io_handler_thread_key;
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extern mysql_pfs_key_t srv_lock_timeout_thread_key;
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extern mysql_pfs_key_t srv_error_monitor_thread_key;
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extern mysql_pfs_key_t srv_monitor_thread_key;
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extern mysql_pfs_key_t srv_master_thread_key;
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/* This macro register the current thread and its key with performance
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# define pfs_register_thread(key) \
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struct PSI_thread* psi = PSI_server->new_thread(key, NULL, 0);\
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PSI_server->set_thread(psi); \
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/* This macro delist the current thread from performance schema */
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# define pfs_delete_thread() \
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PSI_server->delete_current_thread(); \
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# endif /* UNIV_PFS_THREAD */
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#endif /* !UNIV_HOTBACKUP */
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/** Types of raw partitions in innodb_data_file_path */
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void* arg); /*!< in: a dummy parameter required by
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os_thread_create */
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/*******************************************************************//**
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Wakes up the purge thread if it's not already awake. */
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srv_wake_purge_thread(void);
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/*=======================*/
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/*******************************************************************//**
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Tells the Innobase server that there has been activity in the database
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and wakes up the master thread if it is suspended (not sleeping). Used
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in the MySQL interface. Note that there is a small chance that the master
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srv_wake_master_thread(void);
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/*========================*/
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/*******************************************************************//**
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Tells the purge thread that there has been activity in the database
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and wakes up the purge thread if it is suspended (not sleeping). Note
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that there is a small chance that the purge thread stays suspended
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(we do not protect our operation with the kernel mutex, for
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performace reasons). */
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srv_wake_purge_thread_if_not_active(void);
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/*=====================================*/
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/*********************************************************************//**
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Puts an OS thread to wait if there are too many concurrent threads
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(>= srv_thread_concurrency) inside InnoDB. The threads wait in a FIFO queue. */
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MySQL OS thread */
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/*********************************************************************//**
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A thread which wakes up threads whose lock wait may have lasted too long.
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This also prints the info output by various InnoDB monitors.
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@return a dummy parameter */
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srv_lock_timeout_thread(
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/*====================*/
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srv_lock_timeout_and_monitor_thread(
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/*================================*/
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void* arg); /*!< in: a dummy parameter required by
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os_thread_create */
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/*********************************************************************//**
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A thread which prints the info output by various InnoDB monitors.
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@return a dummy parameter */
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void* arg); /*!< in: a dummy parameter required by
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/*************************************************************************
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A thread which prints warnings about semaphore waits which have lasted
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too long. These can be used to track bugs which cause hangs.
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@return a dummy parameter */
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void* arg); /*!< in: a dummy parameter required by
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os_thread_create */
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/******************************************************************//**
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Outputs to a file the output of the InnoDB Monitor.
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@return FALSE if not all information printed
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due to failure to obtain necessary mutex */
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Outputs to a file the output of the InnoDB Monitor. */
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srv_printf_innodb_monitor(
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/*======================*/
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FILE* file, /*!< in: output stream */
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ibool nowait, /*!< in: whether to wait for kernel mutex */
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ulint* trx_start, /*!< out: file position of the start of
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the list of active transactions */
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ulint* trx_end); /*!< out: file position of the end of
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srv_export_innodb_status(void);
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/*==========================*/
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/******************************************************************//**
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Increment the server activity counter. */
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srv_inc_activity_count(void);
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/*=========================*/
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/*********************************************************************//**
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Asynchronous purge thread.
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@return a dummy parameter */
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void* arg __attribute__((unused))); /*!< in: a dummy parameter
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required by os_thread_create */
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/**********************************************************************//**
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Enqueues a task to server task queue and releases a worker thread, if there
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is a suspended one. */
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srv_que_task_enqueue_low(
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/*=====================*/
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que_thr_t* thr); /*!< in: query thread */
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/**********************************************************************//**
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Check whether any background thread is active.
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@return FALSE if all are are suspended or have exited. */
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srv_is_any_background_thread_active(void);
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/*======================================*/
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/** Thread slot in the thread table */
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typedef struct srv_slot_struct srv_slot_t;
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/** Thread table is an array of slots */
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typedef srv_slot_t srv_table_t;
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/** Status variables to be passed to MySQL */
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struct export_var_struct{
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ulint innodb_rows_inserted; /*!< srv_n_rows_inserted */
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ulint innodb_rows_updated; /*!< srv_n_rows_updated */
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ulint innodb_rows_deleted; /*!< srv_n_rows_deleted */
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ulint innodb_truncated_status_writes; /*!< srv_truncated_status_writes */
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/** Thread slot in the thread table */
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typedef struct srv_slot_struct srv_slot_t;
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/** Thread table is an array of slots */
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typedef srv_slot_t srv_table_t;
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/** The server system struct */
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struct srv_sys_struct{
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srv_table_t* threads; /*!< server thread table */
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extern ulint srv_n_threads_active[];
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#else /* !UNIV_HOTBACKUP */
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# define srv_use_checksums TRUE
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# define srv_use_adaptive_hash_indexes FALSE
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# define srv_use_checksums TRUE
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# define srv_use_native_aio FALSE
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# define srv_force_recovery 0UL
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# define srv_set_io_thread_op_info(t,info) ((void) 0)
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# define srv_is_being_started 0
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removed
plugin/innobase/include/srv0srv.h
