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Diffstat (limited to 'storage/innobase/include/buf0flu.inl')
| -rw-r--r-- | storage/innobase/include/buf0flu.inl | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/storage/innobase/include/buf0flu.inl b/storage/innobase/include/buf0flu.inl new file mode 100644 index 00000000000..8d06a53c547 --- /dev/null +++ b/storage/innobase/include/buf0flu.inl @@ -0,0 +1,149 @@ +/***************************************************************************** + +Copyright (c) 1995, 2015, Oracle and/or its affiliates. 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., +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 "buf0buf.h" +#include "mtr0mtr.h" +#include "srv0srv.h" +#include "fsp0types.h" + +/********************************************************************//** +Inserts a modified block into the flush list. */ +void +buf_flush_insert_into_flush_list( +/*=============================*/ + buf_pool_t* buf_pool, /*!< buffer pool instance */ + buf_block_t* block, /*!< in/out: block which is modified */ + lsn_t lsn); /*!< in: oldest modification */ + +/********************************************************************//** +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_pool_t* buf_pool, /*!< buffer pool instance */ + buf_block_t* block, /*!< in/out: block which is modified */ + lsn_t lsn); /*!< in: oldest modification */ + +/********************************************************************//** +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 */ + FlushObserver* observer) /*!< in: flush observer */ +{ +#ifdef UNIV_DEBUG + { + /* Allow write to proceed to shared temporary tablespace + in read-only mode. */ + ut_ad(!srv_read_only_mode + || fsp_is_system_temporary(block->page.id.space())); + ut_ad(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); + ut_ad(block->page.buf_fix_count > 0); + + buf_pool_t* buf_pool = buf_pool_from_block(block); + + ut_ad(!buf_pool_mutex_own(buf_pool)); + ut_ad(!buf_flush_list_mutex_own(buf_pool)); + } +#endif /* UNIV_DEBUG */ + + mutex_enter(&block->mutex); + + ut_ad(block->page.newest_modification <= end_lsn); + block->page.newest_modification = end_lsn; + + /* Don't allow to set flush observer from non-null to null, + or from one observer to another. */ + ut_ad(block->page.flush_observer == NULL + || block->page.flush_observer == observer); + block->page.flush_observer = observer; + + if (block->page.oldest_modification == 0) { + buf_pool_t* buf_pool = buf_pool_from_block(block); + + buf_flush_insert_into_flush_list(buf_pool, block, start_lsn); + } else { + ut_ad(block->page.oldest_modification <= start_lsn); + } + + buf_page_mutex_exit(block); + + srv_stats.buf_pool_write_requests.inc(); +} + +/********************************************************************//** +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 */ + lsn_t start_lsn, /*!< in: start lsn of the first mtr in a + set of mtr's */ + lsn_t end_lsn) /*!< in: end lsn of the last mtr in the + set of mtr's */ +{ +#ifdef UNIV_DEBUG + { + ut_ad(!srv_read_only_mode); + ut_ad(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); + ut_ad(block->page.buf_fix_count > 0); + + buf_pool_t* buf_pool = buf_pool_from_block(block); + + ut_ad(!buf_pool_mutex_own(buf_pool)); + ut_ad(!buf_flush_list_mutex_own(buf_pool)); + + ut_ad(start_lsn != 0); + ut_ad(block->page.newest_modification <= end_lsn); + } +#endif /* UNIV_DEBUG */ + + buf_page_mutex_enter(block); + + block->page.newest_modification = end_lsn; + + if (!block->page.oldest_modification) { + buf_pool_t* buf_pool = buf_pool_from_block(block); + + buf_flush_insert_sorted_into_flush_list( + buf_pool, block, start_lsn); + } else { + ut_ad(block->page.oldest_modification <= start_lsn); + } + + buf_page_mutex_exit(block); + +} |