mtr0mtr.cc File Reference

Mini-transaction buffer. More...

#include "mtr0mtr.h"
#include "buf0buf.h"
#include "buf0flu.h"
#include "clone0api.h"
#include "fsp0sysspace.h"
#include "log0meb.h"
#include "clone0clone.h"
#include "log0buf.h"
#include "log0chkp.h"
#include "log0recv.h"
#include "log0test.h"
#include "log0write.h"
#include "mtr0log.h"
#include "my_dbug.h"
#include "page0types.h"
#include "trx0purge.h"

Classes
struct	Iterate< Functor >
	Iterate over a memo block in reverse. More...
struct	Find
	Find specific object. More...
struct	Find_page
	Find a page frame. More...
struct	Mtr_memo_print
struct	Mtr_memo_contains
struct	Release_all
	Release the latches and blocks acquired by the mini-transaction. More...
struct	Debug_check
	Check that all slots have been handled. More...
struct	Debug_check_no_latching
	Assure that there are no slots that are latching any resources. More...
struct	Add_dirty_blocks_to_flush_list
	Add blocks modified by the mini-transaction to the flush list. More...
class	mtr_t::Command
struct	mtr_write_log_t
	Write the block contents to the REDO log. More...
struct	FlaggedCheck
	Debug check for flags. More...

Functions
static void	memo_slot_release (mtr_memo_slot_t *slot)
	Release latches and decrement the buffer fix count. More...
lsn_t	mtr_commit_mlog_test (size_t payload)
	Reserves space in the log buffer and writes a single MLOG_TEST. More...
static void	mtr_commit_mlog_test_filling_block_low (log_t &log, size_t req_space_left, size_t recursive_level)
void	mtr_commit_mlog_test_filling_block (log_t &log, size_t req_space_left)
	Reserves space in the log buffer and writes a single MLOG_TEST. More...

Detailed Description

Mini-transaction buffer.

Created 11/26/1995 Heikki Tuuri

Function Documentation

memo_slot_release()

static void memo_slot_release ( mtr_memo_slot_t *  slot )

static

Release latches and decrement the buffer fix count.

Parameters

[in]

slot

memo slot

mtr_commit_mlog_test()

lsn_t mtr_commit_mlog_test

(

size_t

payload = 0

)

Reserves space in the log buffer and writes a single MLOG_TEST.

Parameters

[in]

payload

number of extra bytes within the record, not greater than 1024

Returns

end_lsn pointing to the first byte after the written record

mtr_commit_mlog_test_filling_block()

void mtr_commit_mlog_test_filling_block	(	log_t &	log,
		size_t	space_left = 0
	)

Reserves space in the log buffer and writes a single MLOG_TEST.

Adjusts size of the payload in the record, in order to fill the current block up to its boundary. If nothing else is happening in parallel, we could expect to see afterwards: (cur_lsn + space_left) % OS_FILE_LOG_BLOCK_SIZE == LOG_BLOCK_HDR_SIZE, where cur_lsn = log_get_lsn(log).

Parameters

[in,out]	log	redo log
[in]	space_left	extra bytes left to the boundary of block, must be not greater than 496

mtr_commit_mlog_test_filling_block_low()

static void mtr_commit_mlog_test_filling_block_low ( log_t &  log, size_t  req_space_left, size_t  recursive_level  )

static