mirror of
https://github.com/MariaDB/server.git
synced 2025-01-18 13:02:28 +01:00
155 lines
4.6 KiB
Text
155 lines
4.6 KiB
Text
/*****************************************************************************
|
|
|
|
Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved.
|
|
|
|
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., 59 Temple
|
|
Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
*****************************************************************************/
|
|
|
|
/**************************************************//**
|
|
@file include/buf0flu.ic
|
|
The database buffer pool flush algorithm
|
|
|
|
Created 11/5/1995 Heikki Tuuri
|
|
*******************************************************/
|
|
|
|
#ifndef UNIV_HOTBACKUP
|
|
#include "buf0buf.h"
|
|
#include "mtr0mtr.h"
|
|
|
|
/********************************************************************//**
|
|
Inserts a modified block into the flush list. */
|
|
UNIV_INTERN
|
|
void
|
|
buf_flush_insert_into_flush_list(
|
|
/*=============================*/
|
|
buf_block_t* block); /*!< in/out: block which is modified */
|
|
/********************************************************************//**
|
|
Inserts a modified block into the flush list in the right sorted position.
|
|
This function is used by recovery, because there the modifications do not
|
|
necessarily come in the order of lsn's. */
|
|
UNIV_INTERN
|
|
void
|
|
buf_flush_insert_sorted_into_flush_list(
|
|
/*====================================*/
|
|
buf_block_t* block); /*!< in/out: block which is modified */
|
|
|
|
/********************************************************************//**
|
|
This function should be called at a mini-transaction commit, if a page was
|
|
modified in it. Puts the block to the list of modified blocks, if it is not
|
|
already in it. */
|
|
UNIV_INLINE
|
|
void
|
|
buf_flush_note_modification(
|
|
/*========================*/
|
|
buf_block_t* block, /*!< in: block which is modified */
|
|
mtr_t* mtr) /*!< in: mtr */
|
|
{
|
|
ibool use_LRU_mutex = FALSE;
|
|
|
|
if (UT_LIST_GET_LEN(buf_pool->unzip_LRU))
|
|
use_LRU_mutex = TRUE;
|
|
|
|
if (use_LRU_mutex)
|
|
mutex_enter(&LRU_list_mutex);
|
|
|
|
mutex_enter(&block->mutex);
|
|
|
|
ut_ad(block);
|
|
ut_ad(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE);
|
|
ut_ad(block->page.buf_fix_count > 0);
|
|
#ifdef UNIV_SYNC_DEBUG
|
|
ut_ad(rw_lock_own(&(block->lock), RW_LOCK_EX));
|
|
#endif /* UNIV_SYNC_DEBUG */
|
|
//ut_ad(buf_pool_mutex_own());
|
|
|
|
ut_ad(mtr->start_lsn != 0);
|
|
ut_ad(mtr->modifications);
|
|
ut_ad(block->page.newest_modification <= mtr->end_lsn);
|
|
|
|
block->page.newest_modification = mtr->end_lsn;
|
|
|
|
if (!block->page.oldest_modification) {
|
|
mutex_enter(&flush_list_mutex);
|
|
|
|
block->page.oldest_modification = mtr->start_lsn;
|
|
ut_ad(block->page.oldest_modification != 0);
|
|
|
|
buf_flush_insert_into_flush_list(block);
|
|
mutex_exit(&flush_list_mutex);
|
|
} else {
|
|
ut_ad(block->page.oldest_modification <= mtr->start_lsn);
|
|
}
|
|
|
|
mutex_exit(&block->mutex);
|
|
|
|
++srv_buf_pool_write_requests;
|
|
|
|
if (use_LRU_mutex)
|
|
mutex_exit(&LRU_list_mutex);
|
|
}
|
|
|
|
/********************************************************************//**
|
|
This function should be called when recovery has modified a buffer page. */
|
|
UNIV_INLINE
|
|
void
|
|
buf_flush_recv_note_modification(
|
|
/*=============================*/
|
|
buf_block_t* block, /*!< in: block which is modified */
|
|
ib_uint64_t start_lsn, /*!< in: start lsn of the first mtr in a
|
|
set of mtr's */
|
|
ib_uint64_t end_lsn) /*!< in: end lsn of the last mtr in the
|
|
set of mtr's */
|
|
{
|
|
ibool use_LRU_mutex = FALSE;
|
|
|
|
if(UT_LIST_GET_LEN(buf_pool->unzip_LRU))
|
|
use_LRU_mutex = TRUE;
|
|
|
|
if (use_LRU_mutex)
|
|
mutex_enter(&LRU_list_mutex);
|
|
|
|
mutex_enter(&(block->mutex));
|
|
|
|
ut_ad(block);
|
|
ut_ad(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE);
|
|
ut_ad(block->page.buf_fix_count > 0);
|
|
#ifdef UNIV_SYNC_DEBUG
|
|
ut_ad(rw_lock_own(&(block->lock), RW_LOCK_EX));
|
|
#endif /* UNIV_SYNC_DEBUG */
|
|
|
|
//buf_pool_mutex_enter();
|
|
|
|
ut_ad(block->page.newest_modification <= end_lsn);
|
|
|
|
block->page.newest_modification = end_lsn;
|
|
|
|
if (!block->page.oldest_modification) {
|
|
mutex_enter(&flush_list_mutex);
|
|
|
|
block->page.oldest_modification = start_lsn;
|
|
|
|
ut_ad(block->page.oldest_modification != 0);
|
|
|
|
buf_flush_insert_sorted_into_flush_list(block);
|
|
mutex_exit(&flush_list_mutex);
|
|
} else {
|
|
ut_ad(block->page.oldest_modification <= start_lsn);
|
|
}
|
|
|
|
//buf_pool_mutex_exit();
|
|
if (use_LRU_mutex)
|
|
mutex_exit(&LRU_list_mutex);
|
|
mutex_exit(&(block->mutex));
|
|
}
|
|
#endif /* !UNIV_HOTBACKUP */
|