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63574f1275
The InnoDB source code contains quite a few references to a closed-source hot backup tool which was originally called InnoDB Hot Backup (ibbackup) and later incorporated in MySQL Enterprise Backup. The open source backup tool XtraBackup uses the full database for recovery. So, the references to UNIV_HOTBACKUP are only cluttering the source code.
99 lines
3 KiB
Text
99 lines
3 KiB
Text
/*****************************************************************************
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Copyright (c) 1996, 2014, Oracle and/or its affiliates. All Rights Reserved.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
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*****************************************************************************/
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/**************************************************//**
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@file include/trx0rec.ic
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Transaction undo log record
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Created 3/26/1996 Heikki Tuuri
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*******************************************************/
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/**********************************************************************//**
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Reads from an undo log record the record type.
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@return record type */
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UNIV_INLINE
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ulint
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trx_undo_rec_get_type(
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/*==================*/
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const trx_undo_rec_t* undo_rec) /*!< in: undo log record */
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{
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return(mach_read_from_1(undo_rec + 2) & (TRX_UNDO_CMPL_INFO_MULT - 1));
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}
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/**********************************************************************//**
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Reads from an undo log record the record compiler info.
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@return compiler info */
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UNIV_INLINE
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ulint
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trx_undo_rec_get_cmpl_info(
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/*=======================*/
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const trx_undo_rec_t* undo_rec) /*!< in: undo log record */
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{
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return(mach_read_from_1(undo_rec + 2) / TRX_UNDO_CMPL_INFO_MULT);
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}
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/**********************************************************************//**
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Returns TRUE if an undo log record contains an extern storage field.
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@return TRUE if extern */
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UNIV_INLINE
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ibool
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trx_undo_rec_get_extern_storage(
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/*============================*/
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const trx_undo_rec_t* undo_rec) /*!< in: undo log record */
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{
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if (mach_read_from_1(undo_rec + 2) & TRX_UNDO_UPD_EXTERN) {
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return(TRUE);
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}
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return(FALSE);
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}
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/**********************************************************************//**
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Reads the undo log record number.
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@return undo no */
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UNIV_INLINE
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undo_no_t
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trx_undo_rec_get_undo_no(
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/*=====================*/
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const trx_undo_rec_t* undo_rec) /*!< in: undo log record */
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{
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const byte* ptr;
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ptr = undo_rec + 3;
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return(mach_u64_read_much_compressed(ptr));
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}
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/***********************************************************************//**
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Copies the undo record to the heap.
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@return own: copy of undo log record */
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UNIV_INLINE
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trx_undo_rec_t*
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trx_undo_rec_copy(
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/*==============*/
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const trx_undo_rec_t* undo_rec, /*!< in: undo log record */
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mem_heap_t* heap) /*!< in: heap where copied */
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{
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ulint len;
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len = mach_read_from_2(undo_rec)
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- ut_align_offset(undo_rec, UNIV_PAGE_SIZE);
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ut_ad(len < UNIV_PAGE_SIZE);
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return((trx_undo_rec_t*) mem_heap_dup(heap, undo_rec, len));
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}
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