mirror of
https://github.com/MariaDB/server.git
synced 2025-01-16 12:02:42 +01:00
2662b59306
Docs/manual.texi: Added Innobase documentation configure.in: Incremented version include/my_base.h: Added option for Innobase myisam/mi_check.c: cleanup mysql-test/t/bdb.test: cleanup mysql-test/t/innobase.test: Extended with new tests from bdb.test mysql-test/t/merge.test: Added test of SHOW create mysys/my_init.c: Fix for UNIXWARE 7 scripts/mysql_install_db.sh: Always write how to start mysqld scripts/safe_mysqld.sh: Fixed type sql/ha_innobase.cc: Update to new version sql/ha_innobase.h: Update to new version sql/handler.h: Added 'update_table_comment()' and 'append_create_info()' sql/sql_delete.cc: Fixes for Innobase sql/sql_select.cc: Fixes for Innobase sql/sql_show.cc: Append create information (for MERGE tables) sql/sql_update.cc: Fixes for Innobase
100 lines
3 KiB
Text
100 lines
3 KiB
Text
/******************************************************
|
|
The database buffer pool flush algorithm
|
|
|
|
(c) 1995 Innobase Oy
|
|
|
|
Created 11/5/1995 Heikki Tuuri
|
|
*******************************************************/
|
|
|
|
#include "buf0buf.h"
|
|
#include "mtr0mtr.h"
|
|
|
|
/************************************************************************
|
|
Inserts a modified block into the flush list. */
|
|
|
|
void
|
|
buf_flush_insert_into_flush_list(
|
|
/*=============================*/
|
|
buf_block_t* block); /* in: 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. */
|
|
|
|
void
|
|
buf_flush_insert_sorted_into_flush_list(
|
|
/*====================================*/
|
|
buf_block_t* block); /* in: 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 */
|
|
{
|
|
ut_ad(block);
|
|
ut_ad(block->state == BUF_BLOCK_FILE_PAGE);
|
|
ut_ad(block->buf_fix_count > 0);
|
|
ut_ad(rw_lock_own(&(block->lock), RW_LOCK_EX));
|
|
ut_ad(mutex_own(&(buf_pool->mutex)));
|
|
|
|
ut_ad(ut_dulint_cmp(mtr->start_lsn, ut_dulint_zero) != 0);
|
|
ut_ad(mtr->modifications);
|
|
ut_ad(ut_dulint_cmp(block->newest_modification, mtr->end_lsn) <= 0);
|
|
|
|
block->newest_modification = mtr->end_lsn;
|
|
|
|
if (ut_dulint_is_zero(block->oldest_modification)) {
|
|
|
|
block->oldest_modification = mtr->start_lsn;
|
|
ut_ad(!ut_dulint_is_zero(block->oldest_modification));
|
|
|
|
buf_flush_insert_into_flush_list(block);
|
|
} else {
|
|
ut_ad(ut_dulint_cmp(block->oldest_modification,
|
|
mtr->start_lsn) <= 0);
|
|
}
|
|
}
|
|
|
|
/************************************************************************
|
|
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 */
|
|
dulint start_lsn, /* in: start lsn of the first mtr in a
|
|
set of mtr's */
|
|
dulint end_lsn) /* in: end lsn of the last mtr in the
|
|
set of mtr's */
|
|
{
|
|
ut_ad(block);
|
|
ut_ad(block->state == BUF_BLOCK_FILE_PAGE);
|
|
ut_ad(block->buf_fix_count > 0);
|
|
ut_ad(rw_lock_own(&(block->lock), RW_LOCK_EX));
|
|
|
|
mutex_enter(&(buf_pool->mutex));
|
|
|
|
ut_ad(ut_dulint_cmp(block->newest_modification, end_lsn) <= 0);
|
|
|
|
block->newest_modification = end_lsn;
|
|
|
|
if (ut_dulint_is_zero(block->oldest_modification)) {
|
|
|
|
block->oldest_modification = start_lsn;
|
|
|
|
ut_ad(!ut_dulint_is_zero(block->oldest_modification));
|
|
|
|
buf_flush_insert_sorted_into_flush_list(block);
|
|
} else {
|
|
ut_ad(ut_dulint_cmp(block->oldest_modification,
|
|
start_lsn) <= 0);
|
|
}
|
|
|
|
mutex_exit(&(buf_pool->mutex));
|
|
}
|