diff options
author | unknown <monty@donna.mysql.com> | 2001-02-17 14:19:19 +0200 |
---|---|---|
committer | unknown <monty@donna.mysql.com> | 2001-02-17 14:19:19 +0200 |
commit | 2662b59306ef0cd495fa6e2edf7129e58a11393a (patch) | |
tree | bfe39951a73e906579ab819bf5198ad8f3a64a36 /innobase/include/buf0flu.h | |
parent | 66de55a56bdcf2f7a9c0c4f8e19b3e761475e202 (diff) | |
download | mariadb-git-2662b59306ef0cd495fa6e2edf7129e58a11393a.tar.gz |
Added Innobase to source distribution
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
Diffstat (limited to 'innobase/include/buf0flu.h')
-rw-r--r-- | innobase/include/buf0flu.h | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/innobase/include/buf0flu.h b/innobase/include/buf0flu.h new file mode 100644 index 00000000000..9317950904f --- /dev/null +++ b/innobase/include/buf0flu.h @@ -0,0 +1,110 @@ +/****************************************************** +The database buffer pool flush algorithm + +(c) 1995 Innobase Oy + +Created 11/5/1995 Heikki Tuuri +*******************************************************/ + +#ifndef buf0flu_h +#define buf0flu_h + +#include "univ.i" +#include "buf0types.h" +#include "ut0byte.h" +#include "mtr0types.h" + +/************************************************************************ +Updates the flush system data structures when a write is completed. */ + +void +buf_flush_write_complete( +/*=====================*/ + buf_block_t* block); /* in: pointer to the block in question */ +/************************************************************************* +Flushes pages from the end of the LRU list if there is too small +a margin of replaceable pages there. */ + +void +buf_flush_free_margin(void); +/*=======================*/ +/*********************************************************************** +This utility flushes dirty blocks from the end of the LRU list or flush_list. +NOTE 1: in the case of an LRU flush the calling thread may own latches to +pages: to avoid deadlocks, this function must be written so that it cannot +end up waiting for these latches! NOTE 2: in the case of a flush list flush, +the calling thread is not allowed to own any latches on pages! */ + +ulint +buf_flush_batch( +/*============*/ + /* out: number of blocks for which the write + request was queued */ + ulint flush_type, /* in: BUF_FLUSH_LRU or BUF_FLUSH_LIST; if + BUF_FLUSH_LIST, then the caller must not own + any latches on pages */ + ulint min_n, /* in: wished minimum mumber of blocks flushed + (it is not guaranteed that the actual number + is that big, though) */ + dulint lsn_limit); /* in the case BUF_FLUSH_LIST all blocks whose + oldest_modification is smaller than this + should be flushed (if their number does not + exceed min_n), otherwise ignored */ +/********************************************************************** +Waits until a flush batch of the given type ends */ + +void +buf_flush_wait_batch_end( +/*=====================*/ + ulint type); /* in: BUF_FLUSH_LRU or BUF_FLUSH_LIST */ +/************************************************************************ +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 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 */ +/************************************************************************ +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 */ +/************************************************************************ +Returns TRUE if the file page block is immediately suitable for replacement, +i.e., transition FILE_PAGE => NOT_USED allowed. */ +ibool +buf_flush_ready_for_replace( +/*========================*/ + /* out: TRUE if can replace immediately */ + buf_block_t* block); /* in: buffer control block, must be in state + BUF_BLOCK_FILE_PAGE and in the LRU list */ +/********************************************************************** +Validates the flush list. */ + +ibool +buf_flush_validate(void); +/*====================*/ + /* out: TRUE if ok */ + +/* When buf_flush_free_margin is called, it tries to make this many blocks +available to replacement in the free list and at the end of the LRU list (to +make sure that a read-ahead batch can be read efficiently in a single +sweep). */ + +#define BUF_FLUSH_FREE_BLOCK_MARGIN (5 + BUF_READ_AHEAD_AREA) +#define BUF_FLUSH_EXTRA_MARGIN (BUF_FLUSH_FREE_BLOCK_MARGIN / 4) + +#ifndef UNIV_NONINL +#include "buf0flu.ic" +#endif + +#endif |