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/*****************************************************************************
Copyright (c) 1995, 2015, Oracle and/or its affiliates. All Rights Reserved.
Copyright (c) 2019, 2021, MariaDB Corporation.
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.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
*****************************************************************************/
/**************************************************//**
@file include/buf0flu.ic
The database buffer pool flush algorithm
Created 11/5/1995 Heikki Tuuri
*******************************************************/
#include "assume_aligned.h"
#include "buf0buf.h"
#include "srv0srv.h"
/********************************************************************//**
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 */
lsn_t start_lsn, /*!< in: start lsn of the mtr that
modified this block */
lsn_t end_lsn) /*!< in: end lsn of the mtr that
modified this block */
{
ut_ad(!srv_read_only_mode);
ut_ad(block->page.state() == BUF_BLOCK_FILE_PAGE);
ut_ad(block->page.buf_fix_count());
ut_ad(mach_read_from_8(block->frame + FIL_PAGE_LSN) <= end_lsn);
mach_write_to_8(block->frame + FIL_PAGE_LSN, end_lsn);
if (UNIV_LIKELY_NULL(block->page.zip.data)) {
memcpy_aligned<8>(FIL_PAGE_LSN + block->page.zip.data,
FIL_PAGE_LSN + block->frame, 8);
}
const lsn_t oldest_modification = block->page.oldest_modification();
if (oldest_modification > 1) {
ut_ad(oldest_modification <= start_lsn);
} else if (fsp_is_system_temporary(block->page.id().space())) {
block->page.set_temp_modified();
} else {
buf_pool.insert_into_flush_list(block, start_lsn);
}
srv_stats.buf_pool_write_requests.inc();
}
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