mirror of
https://github.com/MariaDB/server.git
synced 2025-01-23 23:34:34 +01:00
c6e23c8549
BitKeeper/etc/ignore: added sql/mysql_tzinfo_to_sql BitKeeper/etc/logging_ok: auto-union acinclude.m4: Auto merged extra/perror.c: Auto merged include/mysql.h: Auto merged innobase/include/mach0data.ic: Auto merged innobase/include/mtr0log.h: Auto merged innobase/include/mtr0log.ic: Auto merged innobase/mem/mem0dbg.c: Auto merged innobase/pars/lexyy.c: Auto merged BitKeeper/deleted/.del-4.0.XX-gpl.ipr~f5909a9e9bd8094: Auto merged BitKeeper/deleted/.del-Clients and Tools.fgl~bf0f776883577f02: Auto merged BitKeeper/deleted/.del-Development.fgl~6392ce285e73f5fc: Auto merged mysql-test/mysql-test-run.sh: Auto merged mysql-test/r/innodb_cache.result: Auto merged mysql-test/r/lowercase_table2.result: Auto merged mysql-test/t/innodb_cache.test: Auto merged mysql-test/t/lowercase_table2.test: Auto merged sql/ha_berkeley.cc: Auto merged sql/handler.cc: Auto merged scripts/make_win_src_distribution.sh: Auto merged sql/sql_base.cc: Auto merged sql/sql_parse.cc: Auto merged sql/sql_yacc.yy: Auto merged libmysql/libmysql.c: Merge with 4.0 mysql-test/r/bdb.result: Merge with 4.0 mysql-test/r/range.result: Merge with 4.0 mysql-test/t/bdb.test: Merge with 4.0 mysys/hash.c: Merge with 4.0 scripts/mysql_install_db.sh: Merge with 4.0 sql/field.cc: Merge with 4.0 sql/field.h: Merge with 4.0 sql/mysql_priv.h: Merge with 4.0 sql/sql_handler.cc: Merge with 4.0 sql/sql_select.cc: Merge with 4.0 sql/sql_table.cc: Merge with 4.0
183 lines
6 KiB
C
183 lines
6 KiB
C
/******************************************************
|
|
Mini-transaction logging routines
|
|
|
|
(c) 1995 Innobase Oy
|
|
|
|
Created 12/7/1995 Heikki Tuuri
|
|
*******************************************************/
|
|
|
|
#ifndef mtr0log_h
|
|
#define mtr0log_h
|
|
|
|
#include "univ.i"
|
|
#include "mtr0mtr.h"
|
|
|
|
/************************************************************
|
|
Writes 1 - 4 bytes to a file page buffered in the buffer pool.
|
|
Writes the corresponding log record to the mini-transaction log. */
|
|
|
|
void
|
|
mlog_write_ulint(
|
|
/*=============*/
|
|
byte* ptr, /* in: pointer where to write */
|
|
ulint val, /* in: value to write */
|
|
byte type, /* in: MLOG_1BYTE, MLOG_2BYTES, MLOG_4BYTES */
|
|
mtr_t* mtr); /* in: mini-transaction handle */
|
|
/************************************************************
|
|
Writes 8 bytes to a file page buffered in the buffer pool.
|
|
Writes the corresponding log record to the mini-transaction log. */
|
|
|
|
void
|
|
mlog_write_dulint(
|
|
/*==============*/
|
|
byte* ptr, /* in: pointer where to write */
|
|
dulint val, /* in: value to write */
|
|
mtr_t* mtr); /* in: mini-transaction handle */
|
|
/************************************************************
|
|
Writes a string to a file page buffered in the buffer pool. Writes the
|
|
corresponding log record to the mini-transaction log. */
|
|
|
|
void
|
|
mlog_write_string(
|
|
/*==============*/
|
|
byte* ptr, /* in: pointer where to write */
|
|
byte* str, /* in: string to write */
|
|
ulint len, /* in: string length */
|
|
mtr_t* mtr); /* in: mini-transaction handle */
|
|
/************************************************************
|
|
Writes initial part of a log record consisting of one-byte item
|
|
type and four-byte space and page numbers. */
|
|
|
|
void
|
|
mlog_write_initial_log_record(
|
|
/*==========================*/
|
|
byte* ptr, /* in: pointer to (inside) a buffer frame
|
|
holding the file page where modification
|
|
is made */
|
|
byte type, /* in: log item type: MLOG_1BYTE, ... */
|
|
mtr_t* mtr); /* in: mini-transaction handle */
|
|
/************************************************************
|
|
Writes a log record about an .ibd file create/delete/rename. */
|
|
UNIV_INLINE
|
|
byte*
|
|
mlog_write_initial_log_record_for_file_op(
|
|
/*======================================*/
|
|
/* out: new value of log_ptr */
|
|
ulint type, /* in: MLOG_FILE_CREATE, MLOG_FILE_DELETE, or
|
|
MLOG_FILE_RENAME */
|
|
ulint space_id,/* in: space id, if applicable */
|
|
ulint page_no,/* in: page number (not relevant currently) */
|
|
byte* log_ptr,/* in: pointer to mtr log which has been opened */
|
|
mtr_t* mtr); /* in: mtr */
|
|
/************************************************************
|
|
Catenates 1 - 4 bytes to the mtr log. */
|
|
UNIV_INLINE
|
|
void
|
|
mlog_catenate_ulint(
|
|
/*================*/
|
|
mtr_t* mtr, /* in: mtr */
|
|
ulint val, /* in: value to write */
|
|
ulint type); /* in: MLOG_1BYTE, MLOG_2BYTES, MLOG_4BYTES */
|
|
/************************************************************
|
|
Catenates n bytes to the mtr log. */
|
|
|
|
void
|
|
mlog_catenate_string(
|
|
/*=================*/
|
|
mtr_t* mtr, /* in: mtr */
|
|
byte* str, /* in: string to write */
|
|
ulint len); /* in: string length */
|
|
/************************************************************
|
|
Catenates a compressed ulint to mlog. */
|
|
UNIV_INLINE
|
|
void
|
|
mlog_catenate_ulint_compressed(
|
|
/*===========================*/
|
|
mtr_t* mtr, /* in: mtr */
|
|
ulint val); /* in: value to write */
|
|
/************************************************************
|
|
Catenates a compressed dulint to mlog. */
|
|
UNIV_INLINE
|
|
void
|
|
mlog_catenate_dulint_compressed(
|
|
/*============================*/
|
|
mtr_t* mtr, /* in: mtr */
|
|
dulint val); /* in: value to write */
|
|
/************************************************************
|
|
Opens a buffer to mlog. It must be closed with mlog_close. */
|
|
UNIV_INLINE
|
|
byte*
|
|
mlog_open(
|
|
/*======*/
|
|
/* out: buffer, NULL if log mode MTR_LOG_NONE */
|
|
mtr_t* mtr, /* in: mtr */
|
|
ulint size); /* in: buffer size in bytes */
|
|
/************************************************************
|
|
Closes a buffer opened to mlog. */
|
|
UNIV_INLINE
|
|
void
|
|
mlog_close(
|
|
/*=======*/
|
|
mtr_t* mtr, /* in: mtr */
|
|
byte* ptr); /* in: buffer space from ptr up was not used */
|
|
/************************************************************
|
|
Writes the initial part of a log record (3..11 bytes).
|
|
If the implementation of this function is changed, all
|
|
size parameters to mlog_open() should be adjusted accordingly! */
|
|
UNIV_INLINE
|
|
byte*
|
|
mlog_write_initial_log_record_fast(
|
|
/*===============================*/
|
|
/* out: new value of log_ptr */
|
|
byte* ptr, /* in: pointer to (inside) a buffer frame holding the
|
|
file page where modification is made */
|
|
byte type, /* in: log item type: MLOG_1BYTE, ... */
|
|
byte* log_ptr,/* in: pointer to mtr log which has been opened */
|
|
mtr_t* mtr); /* in: mtr */
|
|
/************************************************************
|
|
Parses an initial log record written by mlog_write_initial_log_record. */
|
|
|
|
byte*
|
|
mlog_parse_initial_log_record(
|
|
/*==========================*/
|
|
/* out: parsed record end, NULL if not a complete
|
|
record */
|
|
byte* ptr, /* in: buffer */
|
|
byte* end_ptr,/* in: buffer end */
|
|
byte* type, /* out: log record type: MLOG_1BYTE, ... */
|
|
ulint* space, /* out: space id */
|
|
ulint* page_no);/* out: page number */
|
|
/************************************************************
|
|
Parses a log record written by mlog_write_ulint or mlog_write_dulint. */
|
|
|
|
byte*
|
|
mlog_parse_nbytes(
|
|
/*==============*/
|
|
/* out: parsed record end, NULL if not a complete
|
|
record */
|
|
ulint type, /* in: log record type: MLOG_1BYTE, ... */
|
|
byte* ptr, /* in: buffer */
|
|
byte* end_ptr,/* in: buffer end */
|
|
byte* page); /* in: page where to apply the log record, or NULL */
|
|
/************************************************************
|
|
Parses a log record written by mlog_write_string. */
|
|
|
|
byte*
|
|
mlog_parse_string(
|
|
/*==============*/
|
|
/* out: parsed record end, NULL if not a complete
|
|
record */
|
|
byte* ptr, /* in: buffer */
|
|
byte* end_ptr,/* in: buffer end */
|
|
byte* page); /* in: page where to apply the log record, or NULL */
|
|
|
|
|
|
/* Insert, update, and maybe other functions may use this value to define an
|
|
extra mlog buffer size for variable size data */
|
|
#define MLOG_BUF_MARGIN 256
|
|
|
|
#ifndef UNIV_NONINL
|
|
#include "mtr0log.ic"
|
|
#endif
|
|
|
|
#endif
|