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63574f1275
The InnoDB source code contains quite a few references to a closed-source hot backup tool which was originally called InnoDB Hot Backup (ibbackup) and later incorporated in MySQL Enterprise Backup. The open source backup tool XtraBackup uses the full database for recovery. So, the references to UNIV_HOTBACKUP are only cluttering the source code.
149 lines
4.8 KiB
Text
149 lines
4.8 KiB
Text
/*****************************************************************************
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Copyright (c) 1995, 2015, Oracle and/or its affiliates. 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 Street, Suite 500, Boston, MA 02110-1335 USA
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*****************************************************************************/
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/**************************************************//**
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@file include/buf0flu.ic
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The database buffer pool flush algorithm
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Created 11/5/1995 Heikki Tuuri
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*******************************************************/
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#include "buf0buf.h"
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#include "mtr0mtr.h"
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#include "srv0srv.h"
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#include "fsp0types.h"
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/********************************************************************//**
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Inserts a modified block into the flush list. */
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void
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buf_flush_insert_into_flush_list(
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/*=============================*/
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buf_pool_t* buf_pool, /*!< buffer pool instance */
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buf_block_t* block, /*!< in/out: block which is modified */
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lsn_t lsn); /*!< in: oldest modification */
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/********************************************************************//**
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Inserts a modified block into the flush list in the right sorted position.
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This function is used by recovery, because there the modifications do not
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necessarily come in the order of lsn's. */
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void
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buf_flush_insert_sorted_into_flush_list(
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/*====================================*/
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buf_pool_t* buf_pool, /*!< buffer pool instance */
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buf_block_t* block, /*!< in/out: block which is modified */
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lsn_t lsn); /*!< in: oldest modification */
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/********************************************************************//**
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This function should be called at a mini-transaction commit, if a page was
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modified in it. Puts the block to the list of modified blocks, if it is not
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already in it. */
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UNIV_INLINE
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void
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buf_flush_note_modification(
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/*========================*/
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buf_block_t* block, /*!< in: block which is modified */
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lsn_t start_lsn, /*!< in: start lsn of the mtr that
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modified this block */
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lsn_t end_lsn, /*!< in: end lsn of the mtr that
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modified this block */
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FlushObserver* observer) /*!< in: flush observer */
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{
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#ifdef UNIV_DEBUG
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{
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/* Allow write to proceed to shared temporary tablespace
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in read-only mode. */
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ut_ad(!srv_read_only_mode
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|| fsp_is_system_temporary(block->page.id.space()));
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ut_ad(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE);
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ut_ad(block->page.buf_fix_count > 0);
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buf_pool_t* buf_pool = buf_pool_from_block(block);
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ut_ad(!buf_pool_mutex_own(buf_pool));
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ut_ad(!buf_flush_list_mutex_own(buf_pool));
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}
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#endif /* UNIV_DEBUG */
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mutex_enter(&block->mutex);
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ut_ad(block->page.newest_modification <= end_lsn);
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block->page.newest_modification = end_lsn;
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/* Don't allow to set flush observer from non-null to null,
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or from one observer to another. */
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ut_ad(block->page.flush_observer == NULL
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|| block->page.flush_observer == observer);
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block->page.flush_observer = observer;
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if (block->page.oldest_modification == 0) {
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buf_pool_t* buf_pool = buf_pool_from_block(block);
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buf_flush_insert_into_flush_list(buf_pool, block, start_lsn);
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} else {
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ut_ad(block->page.oldest_modification <= start_lsn);
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}
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buf_page_mutex_exit(block);
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srv_stats.buf_pool_write_requests.inc();
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}
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/********************************************************************//**
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This function should be called when recovery has modified a buffer page. */
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UNIV_INLINE
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void
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buf_flush_recv_note_modification(
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/*=============================*/
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buf_block_t* block, /*!< in: block which is modified */
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lsn_t start_lsn, /*!< in: start lsn of the first mtr in a
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set of mtr's */
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lsn_t end_lsn) /*!< in: end lsn of the last mtr in the
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set of mtr's */
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{
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#ifdef UNIV_DEBUG
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{
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ut_ad(!srv_read_only_mode);
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ut_ad(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE);
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ut_ad(block->page.buf_fix_count > 0);
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buf_pool_t* buf_pool = buf_pool_from_block(block);
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ut_ad(!buf_pool_mutex_own(buf_pool));
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ut_ad(!buf_flush_list_mutex_own(buf_pool));
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ut_ad(start_lsn != 0);
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ut_ad(block->page.newest_modification <= end_lsn);
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}
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#endif /* UNIV_DEBUG */
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buf_page_mutex_enter(block);
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block->page.newest_modification = end_lsn;
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if (!block->page.oldest_modification) {
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buf_pool_t* buf_pool = buf_pool_from_block(block);
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buf_flush_insert_sorted_into_flush_list(
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buf_pool, block, start_lsn);
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} else {
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ut_ad(block->page.oldest_modification <= start_lsn);
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}
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buf_page_mutex_exit(block);
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}
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