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95 lines
3.5 KiB
C
95 lines
3.5 KiB
C
/*****************************************************************************
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Copyright (C) 2014 SkySQL Ab. All Rights Reserved.
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Copyright (C) 2014 Fusion-io. All Rights Reserved.
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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 St, Fifth Floor, Boston, MA 02110-1301 USA
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*****************************************************************************/
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/******************************************************************//**
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@file include/buf0mtflu.h
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Multi-threadef flush method interface function prototypes
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Created 06/02/2014 Jan Lindström jan.lindstrom@skysql.com
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Dhananjoy Das DDas@fusionio.com
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***********************************************************************/
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#ifndef buf0mtflu_h
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#define buf0mtflu_h
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/******************************************************************//**
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Add exit work item to work queue to signal multi-threded flush
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threads that they should exit.
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*/
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void
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buf_mtflu_io_thread_exit(void);
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/*===========================*/
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/******************************************************************//**
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Initialize multi-threaded flush thread syncronization data.
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@return Initialized multi-threaded flush thread syncroniztion data. */
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void*
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buf_mtflu_handler_init(
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/*===================*/
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ulint n_threads, /*!< in: Number of threads to create */
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ulint wrk_cnt); /*!< in: Number of work items */
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/******************************************************************//**
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Return true if multi-threaded flush is initialized
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@return true if initialized, false if not */
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bool
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buf_mtflu_init_done(void);
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/*======================*/
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/*********************************************************************//**
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Clears up tail of the LRU lists:
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* Put replaceable pages at the tail of LRU to the free list
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* Flush dirty pages at the tail of LRU to the disk
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The depth to which we scan each buffer pool is controlled by dynamic
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config parameter innodb_LRU_scan_depth.
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@return total pages flushed */
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UNIV_INTERN
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ulint
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buf_mtflu_flush_LRU_tail(void);
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/*===========================*/
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/*******************************************************************//**
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Multi-threaded version of buf_flush_list
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*/
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bool
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buf_mtflu_flush_list(
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/*=================*/
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ulint min_n, /*!< in: wished minimum mumber of blocks
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flushed (it is not guaranteed that the
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actual number is that big, though) */
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lsn_t lsn_limit, /*!< in the case BUF_FLUSH_LIST all
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blocks whose oldest_modification is
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smaller than this should be flushed
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(if their number does not exceed
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min_n), otherwise ignored */
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ulint* n_processed); /*!< out: the number of pages
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which were processed is passed
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back to caller. Ignored if NULL */
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/*********************************************************************//**
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Set correct thread identifiers to io thread array based on
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information we have. */
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void
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buf_mtflu_set_thread_ids(
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/*=====================*/
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ulint n_threads, /*!<in: Number of threads to fill */
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void* ctx, /*!<in: thread context */
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os_thread_id_t* thread_ids); /*!<in: thread id array */
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#endif
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