mirror of
https://github.com/MariaDB/server.git
synced 2025-01-19 21:42:35 +01:00
eb65479127
Fixes the following bugs: Bug #30706: SQL thread on slave is allowed to block client queries when slave load is high Add (innodb|innobase|srv)_replication_delay MySQL config parameter. Bug #30888: Innodb table + stored procedure + row deletion = server crash While adding code for the low level read of the AUTOINC value from the index, the case for MEDIUM ints which are 3 bytes was missed triggering an assertion. Bug #30907: Regression: "--innodb_autoinc_lock_mode=0" (off) not same as older releases We don't rely on *first_value to be 0 when checking whether get_auto_increment() has been invoked for the first time in a multi-row INSERT. We instead use trx_t::n_autoinc_rows. Initialize trx::n_autoinc_rows inside ha_innobase::start_stmt() too. Bug #31444: "InnoDB: Error: MySQL is freeing a thd" in innodb_mysql.test ha_innobase::external_lock(): Update prebuilt->mysql_has_locked and trx->n_mysql_tables_in_use only after row_lock_table_for_mysql() returns DB_SUCCESS. A timeout on LOCK TABLES would lead to an inconsistent state, which would cause trx_free() to print a warning. Bug #31494: innodb + 5.1 + read committed crash, assertion Set an error code when a deadlock occurs in semi-consistent read.
345 lines
12 KiB
C
345 lines
12 KiB
C
/**********************************************************************
|
|
Utilities for converting data from the database file
|
|
to the machine format.
|
|
|
|
(c) 1995 Innobase Oy
|
|
|
|
Created 11/28/1995 Heikki Tuuri
|
|
***********************************************************************/
|
|
|
|
#ifndef mach0data_h
|
|
#define mach0data_h
|
|
|
|
#include "univ.i"
|
|
#include "ut0byte.h"
|
|
|
|
/* The data and all fields are always stored in a database file
|
|
in the same format: ascii, big-endian, ... .
|
|
All data in the files MUST be accessed using the functions in this
|
|
module. */
|
|
|
|
/***********************************************************
|
|
The following function is used to store data in one byte. */
|
|
UNIV_INLINE
|
|
void
|
|
mach_write_to_1(
|
|
/*============*/
|
|
byte* b, /* in: pointer to byte where to store */
|
|
ulint n); /* in: ulint integer to be stored, >= 0, < 256 */
|
|
/************************************************************
|
|
The following function is used to fetch data from one byte. */
|
|
UNIV_INLINE
|
|
ulint
|
|
mach_read_from_1(
|
|
/*=============*/
|
|
/* out: ulint integer, >= 0, < 256 */
|
|
byte* b); /* in: pointer to byte */
|
|
/***********************************************************
|
|
The following function is used to store data in two consecutive
|
|
bytes. We store the most significant byte to the lower address. */
|
|
UNIV_INLINE
|
|
void
|
|
mach_write_to_2(
|
|
/*============*/
|
|
byte* b, /* in: pointer to two bytes where to store */
|
|
ulint n); /* in: ulint integer to be stored, >= 0, < 64k */
|
|
/************************************************************
|
|
The following function is used to fetch data from two consecutive
|
|
bytes. The most significant byte is at the lowest address. */
|
|
UNIV_INLINE
|
|
ulint
|
|
mach_read_from_2(
|
|
/*=============*/
|
|
/* out: ulint integer, >= 0, < 64k */
|
|
byte* b); /* in: pointer to two bytes */
|
|
|
|
/************************************************************
|
|
The following function is used to convert a 16-bit data item
|
|
to the canonical format, for fast bytewise equality test
|
|
against memory. */
|
|
UNIV_INLINE
|
|
uint16
|
|
mach_encode_2(
|
|
/*==========*/
|
|
/* out: 16-bit integer in canonical format */
|
|
ulint n); /* in: integer in machine-dependent format */
|
|
/************************************************************
|
|
The following function is used to convert a 16-bit data item
|
|
from the canonical format, for fast bytewise equality test
|
|
against memory. */
|
|
UNIV_INLINE
|
|
ulint
|
|
mach_decode_2(
|
|
/*==========*/
|
|
/* out: integer in machine-dependent format */
|
|
uint16 n); /* in: 16-bit integer in canonical format */
|
|
/***********************************************************
|
|
The following function is used to store data in 3 consecutive
|
|
bytes. We store the most significant byte to the lowest address. */
|
|
UNIV_INLINE
|
|
void
|
|
mach_write_to_3(
|
|
/*============*/
|
|
byte* b, /* in: pointer to 3 bytes where to store */
|
|
ulint n); /* in: ulint integer to be stored */
|
|
/************************************************************
|
|
The following function is used to fetch data from 3 consecutive
|
|
bytes. The most significant byte is at the lowest address. */
|
|
UNIV_INLINE
|
|
ulint
|
|
mach_read_from_3(
|
|
/*=============*/
|
|
/* out: ulint integer */
|
|
byte* b); /* in: pointer to 3 bytes */
|
|
/***********************************************************
|
|
The following function is used to store data in four consecutive
|
|
bytes. We store the most significant byte to the lowest address. */
|
|
UNIV_INLINE
|
|
void
|
|
mach_write_to_4(
|
|
/*============*/
|
|
byte* b, /* in: pointer to four bytes where to store */
|
|
ulint n); /* in: ulint integer to be stored */
|
|
/************************************************************
|
|
The following function is used to fetch data from 4 consecutive
|
|
bytes. The most significant byte is at the lowest address. */
|
|
UNIV_INLINE
|
|
ulint
|
|
mach_read_from_4(
|
|
/*=============*/
|
|
/* out: ulint integer */
|
|
byte* b); /* in: pointer to four bytes */
|
|
/*************************************************************
|
|
Writes a ulint in a compressed form (1..5 bytes). */
|
|
UNIV_INLINE
|
|
ulint
|
|
mach_write_compressed(
|
|
/*==================*/
|
|
/* out: stored size in bytes */
|
|
byte* b, /* in: pointer to memory where to store */
|
|
ulint n); /* in: ulint integer to be stored */
|
|
/*************************************************************
|
|
Returns the size of an ulint when written in the compressed form. */
|
|
UNIV_INLINE
|
|
ulint
|
|
mach_get_compressed_size(
|
|
/*=====================*/
|
|
/* out: compressed size in bytes */
|
|
ulint n); /* in: ulint integer to be stored */
|
|
/*************************************************************
|
|
Reads a ulint in a compressed form. */
|
|
UNIV_INLINE
|
|
ulint
|
|
mach_read_compressed(
|
|
/*=================*/
|
|
/* out: read integer */
|
|
byte* b); /* in: pointer to memory from where to read */
|
|
/***********************************************************
|
|
The following function is used to store data in 6 consecutive
|
|
bytes. We store the most significant byte to the lowest address. */
|
|
UNIV_INLINE
|
|
void
|
|
mach_write_to_6(
|
|
/*============*/
|
|
byte* b, /* in: pointer to 6 bytes where to store */
|
|
dulint n); /* in: dulint integer to be stored */
|
|
/************************************************************
|
|
The following function is used to fetch data from 6 consecutive
|
|
bytes. The most significant byte is at the lowest address. */
|
|
UNIV_INLINE
|
|
dulint
|
|
mach_read_from_6(
|
|
/*=============*/
|
|
/* out: dulint integer */
|
|
byte* b); /* in: pointer to 6 bytes */
|
|
/***********************************************************
|
|
The following function is used to store data in 7 consecutive
|
|
bytes. We store the most significant byte to the lowest address. */
|
|
UNIV_INLINE
|
|
void
|
|
mach_write_to_7(
|
|
/*============*/
|
|
byte* b, /* in: pointer to 7 bytes where to store */
|
|
dulint n); /* in: dulint integer to be stored */
|
|
/************************************************************
|
|
The following function is used to fetch data from 7 consecutive
|
|
bytes. The most significant byte is at the lowest address. */
|
|
UNIV_INLINE
|
|
dulint
|
|
mach_read_from_7(
|
|
/*=============*/
|
|
/* out: dulint integer */
|
|
byte* b); /* in: pointer to 7 bytes */
|
|
/***********************************************************
|
|
The following function is used to store data in 8 consecutive
|
|
bytes. We store the most significant byte to the lowest address. */
|
|
UNIV_INLINE
|
|
void
|
|
mach_write_to_8(
|
|
/*============*/
|
|
byte* b, /* in: pointer to 8 bytes where to store */
|
|
dulint n); /* in: dulint integer to be stored */
|
|
/************************************************************
|
|
The following function is used to fetch data from 8 consecutive
|
|
bytes. The most significant byte is at the lowest address. */
|
|
UNIV_INLINE
|
|
dulint
|
|
mach_read_from_8(
|
|
/*=============*/
|
|
/* out: dulint integer */
|
|
byte* b); /* in: pointer to 8 bytes */
|
|
/*************************************************************
|
|
Writes a dulint in a compressed form (5..9 bytes). */
|
|
UNIV_INLINE
|
|
ulint
|
|
mach_dulint_write_compressed(
|
|
/*=========================*/
|
|
/* out: size in bytes */
|
|
byte* b, /* in: pointer to memory where to store */
|
|
dulint n); /* in: dulint integer to be stored */
|
|
/*************************************************************
|
|
Returns the size of a dulint when written in the compressed form. */
|
|
UNIV_INLINE
|
|
ulint
|
|
mach_dulint_get_compressed_size(
|
|
/*============================*/
|
|
/* out: compressed size in bytes */
|
|
dulint n); /* in: dulint integer to be stored */
|
|
/*************************************************************
|
|
Reads a dulint in a compressed form. */
|
|
UNIV_INLINE
|
|
dulint
|
|
mach_dulint_read_compressed(
|
|
/*========================*/
|
|
/* out: read dulint */
|
|
byte* b); /* in: pointer to memory from where to read */
|
|
/*************************************************************
|
|
Writes a dulint in a compressed form (1..11 bytes). */
|
|
UNIV_INLINE
|
|
ulint
|
|
mach_dulint_write_much_compressed(
|
|
/*==============================*/
|
|
/* out: size in bytes */
|
|
byte* b, /* in: pointer to memory where to store */
|
|
dulint n); /* in: dulint integer to be stored */
|
|
/*************************************************************
|
|
Returns the size of a dulint when written in the compressed form. */
|
|
UNIV_INLINE
|
|
ulint
|
|
mach_dulint_get_much_compressed_size(
|
|
/*=================================*/
|
|
/* out: compressed size in bytes */
|
|
dulint n); /* in: dulint integer to be stored */
|
|
/*************************************************************
|
|
Reads a dulint in a compressed form. */
|
|
UNIV_INLINE
|
|
dulint
|
|
mach_dulint_read_much_compressed(
|
|
/*=============================*/
|
|
/* out: read dulint */
|
|
byte* b); /* in: pointer to memory from where to read */
|
|
/*************************************************************
|
|
Reads a ulint in a compressed form if the log record fully contains it. */
|
|
|
|
byte*
|
|
mach_parse_compressed(
|
|
/*==================*/
|
|
/* out: pointer to end of the stored field, NULL if
|
|
not complete */
|
|
byte* ptr, /* in: pointer to buffer from where to read */
|
|
byte* end_ptr,/* in: pointer to end of the buffer */
|
|
ulint* val); /* out: read value */
|
|
/*************************************************************
|
|
Reads a dulint in a compressed form if the log record fully contains it. */
|
|
|
|
byte*
|
|
mach_dulint_parse_compressed(
|
|
/*=========================*/
|
|
/* out: pointer to end of the stored field, NULL if
|
|
not complete */
|
|
byte* ptr, /* in: pointer to buffer from where to read */
|
|
byte* end_ptr,/* in: pointer to end of the buffer */
|
|
dulint* val); /* out: read value */
|
|
/*************************************************************
|
|
Reads a double. It is stored in a little-endian format. */
|
|
UNIV_INLINE
|
|
double
|
|
mach_double_read(
|
|
/*=============*/
|
|
/* out: double read */
|
|
byte* b); /* in: pointer to memory from where to read */
|
|
/*************************************************************
|
|
Writes a double. It is stored in a little-endian format. */
|
|
UNIV_INLINE
|
|
void
|
|
mach_double_write(
|
|
/*==============*/
|
|
byte* b, /* in: pointer to memory where to write */
|
|
double d); /* in: double */
|
|
/*************************************************************
|
|
Reads a float. It is stored in a little-endian format. */
|
|
UNIV_INLINE
|
|
float
|
|
mach_float_read(
|
|
/*============*/
|
|
/* out: float read */
|
|
byte* b); /* in: pointer to memory from where to read */
|
|
/*************************************************************
|
|
Writes a float. It is stored in a little-endian format. */
|
|
UNIV_INLINE
|
|
void
|
|
mach_float_write(
|
|
/*=============*/
|
|
byte* b, /* in: pointer to memory where to write */
|
|
float d); /* in: float */
|
|
/*************************************************************
|
|
Reads a ulint stored in the little-endian format. */
|
|
UNIV_INLINE
|
|
ulint
|
|
mach_read_from_n_little_endian(
|
|
/*===========================*/
|
|
/* out: unsigned long int */
|
|
byte* buf, /* in: from where to read */
|
|
ulint buf_size); /* in: from how many bytes to read */
|
|
/*************************************************************
|
|
Writes a ulint in the little-endian format. */
|
|
UNIV_INLINE
|
|
void
|
|
mach_write_to_n_little_endian(
|
|
/*==========================*/
|
|
byte* dest, /* in: where to write */
|
|
ulint dest_size, /* in: into how many bytes to write */
|
|
ulint n); /* in: unsigned long int to write */
|
|
/*************************************************************
|
|
Reads a ulint stored in the little-endian format. */
|
|
UNIV_INLINE
|
|
ulint
|
|
mach_read_from_2_little_endian(
|
|
/*===========================*/
|
|
/* out: unsigned long int */
|
|
byte* buf); /* in: from where to read */
|
|
/*************************************************************
|
|
Writes a ulint in the little-endian format. */
|
|
UNIV_INLINE
|
|
void
|
|
mach_write_to_2_little_endian(
|
|
/*==========================*/
|
|
byte* dest, /* in: where to write */
|
|
ulint n); /* in: unsigned long int to write */
|
|
|
|
/*************************************************************
|
|
Convert integral type from storage byte order (big endian) to
|
|
host byte order. */
|
|
UNIV_INLINE
|
|
void
|
|
mach_read_int_type(
|
|
/*===============*/
|
|
byte* dest, /* out: where to write */
|
|
const byte* src, /* in: where to read from */
|
|
ulint len, /* in: length of src */
|
|
ibool unsigned_type); /* in: signed or unsigned flag */
|
|
#ifndef UNIV_NONINL
|
|
#include "mach0data.ic"
|
|
#endif
|
|
|
|
#endif
|