mirror of
https://github.com/MariaDB/server.git
synced 2025-01-22 14:54:20 +01:00
a20340cf85
InnoDB undo logs currently always use the innodb_page_size, whether they are stored in the system tablespace, in a dedicated undo tablespace, or in the temporary tablespace. Remove redundant page_size parameters. TrxUndoRsegsIterator::set_next(): return bool instead of page_size.
148 lines
4.1 KiB
Text
148 lines
4.1 KiB
Text
/*****************************************************************************
|
|
|
|
Copyright (c) 1996, 2013, Oracle and/or its affiliates. All Rights Reserved.
|
|
Copyright (c) 2017, MariaDB Corporation.
|
|
|
|
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, Suite 500, Boston, MA 02110-1335 USA
|
|
|
|
*****************************************************************************/
|
|
|
|
/**************************************************//**
|
|
@file include/trx0rseg.ic
|
|
Rollback segment
|
|
|
|
Created 3/26/1996 Heikki Tuuri
|
|
*******************************************************/
|
|
|
|
#include "srv0srv.h"
|
|
#include "mtr0log.h"
|
|
|
|
/** Gets a rollback segment header.
|
|
@param[in] space space where placed
|
|
@param[in] page_no page number of the header
|
|
@param[in,out] mtr mini-transaction
|
|
@return rollback segment header, page x-latched */
|
|
UNIV_INLINE
|
|
trx_rsegf_t*
|
|
trx_rsegf_get(
|
|
ulint space,
|
|
ulint page_no,
|
|
mtr_t* mtr)
|
|
{
|
|
buf_block_t* block;
|
|
trx_rsegf_t* header;
|
|
|
|
ut_ad(space <= srv_undo_tablespaces || space == SRV_TMP_SPACE_ID);
|
|
|
|
block = buf_page_get(
|
|
page_id_t(space, page_no), univ_page_size, RW_X_LATCH, mtr);
|
|
|
|
buf_block_dbg_add_level(block, SYNC_RSEG_HEADER);
|
|
|
|
header = TRX_RSEG + buf_block_get_frame(block);
|
|
|
|
return(header);
|
|
}
|
|
|
|
/** Gets a newly created rollback segment header.
|
|
@param[in] space space where placed
|
|
@param[in] page_no page number of the header
|
|
@param[in,out] mtr mini-transaction
|
|
@return rollback segment header, page x-latched */
|
|
UNIV_INLINE
|
|
trx_rsegf_t*
|
|
trx_rsegf_get_new(
|
|
ulint space,
|
|
ulint page_no,
|
|
mtr_t* mtr)
|
|
{
|
|
buf_block_t* block;
|
|
trx_rsegf_t* header;
|
|
|
|
ut_ad(space <= srv_undo_tablespaces || space == SRV_TMP_SPACE_ID);
|
|
|
|
block = buf_page_get(
|
|
page_id_t(space, page_no), univ_page_size, RW_X_LATCH, mtr);
|
|
|
|
buf_block_dbg_add_level(block, SYNC_RSEG_HEADER_NEW);
|
|
|
|
header = TRX_RSEG + buf_block_get_frame(block);
|
|
|
|
return(header);
|
|
}
|
|
|
|
/***************************************************************//**
|
|
Gets the file page number of the nth undo log slot.
|
|
@return page number of the undo log segment */
|
|
UNIV_INLINE
|
|
ulint
|
|
trx_rsegf_get_nth_undo(
|
|
/*===================*/
|
|
trx_rsegf_t* rsegf, /*!< in: rollback segment header */
|
|
ulint n, /*!< in: index of slot */
|
|
mtr_t* mtr) /*!< in: mtr */
|
|
{
|
|
ut_a(n < TRX_RSEG_N_SLOTS);
|
|
|
|
return(mtr_read_ulint(rsegf + TRX_RSEG_UNDO_SLOTS
|
|
+ n * TRX_RSEG_SLOT_SIZE, MLOG_4BYTES, mtr));
|
|
}
|
|
|
|
/***************************************************************//**
|
|
Sets the file page number of the nth undo log slot. */
|
|
UNIV_INLINE
|
|
void
|
|
trx_rsegf_set_nth_undo(
|
|
/*===================*/
|
|
trx_rsegf_t* rsegf, /*!< in: rollback segment header */
|
|
ulint n, /*!< in: index of slot */
|
|
ulint page_no,/*!< in: page number of the undo log segment */
|
|
mtr_t* mtr) /*!< in: mtr */
|
|
{
|
|
ut_a(n < TRX_RSEG_N_SLOTS);
|
|
|
|
mlog_write_ulint(rsegf + TRX_RSEG_UNDO_SLOTS + n * TRX_RSEG_SLOT_SIZE,
|
|
page_no, MLOG_4BYTES, mtr);
|
|
}
|
|
|
|
/****************************************************************//**
|
|
Looks for a free slot for an undo log segment.
|
|
@return slot index or ULINT_UNDEFINED if not found */
|
|
UNIV_INLINE
|
|
ulint
|
|
trx_rsegf_undo_find_free(
|
|
/*=====================*/
|
|
trx_rsegf_t* rsegf, /*!< in: rollback segment header */
|
|
mtr_t* mtr) /*!< in: mtr */
|
|
{
|
|
ulint i;
|
|
ulint page_no;
|
|
ulint max_slots = TRX_RSEG_N_SLOTS;
|
|
|
|
#ifdef UNIV_DEBUG
|
|
if (trx_rseg_n_slots_debug) {
|
|
max_slots = ut_min(static_cast<ulint>(trx_rseg_n_slots_debug),
|
|
static_cast<ulint>(TRX_RSEG_N_SLOTS));
|
|
}
|
|
#endif
|
|
|
|
for (i = 0; i < max_slots; i++) {
|
|
page_no = trx_rsegf_get_nth_undo(rsegf, i, mtr);
|
|
|
|
if (page_no == FIL_NULL) {
|
|
return(i);
|
|
}
|
|
}
|
|
|
|
return(ULINT_UNDEFINED);
|
|
}
|