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Diffstat (limited to 'storage/xtradb/include/log0online.h')
| -rw-r--r-- | storage/xtradb/include/log0online.h | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/storage/xtradb/include/log0online.h b/storage/xtradb/include/log0online.h deleted file mode 100644 index 5c3e7d07fd9..00000000000 --- a/storage/xtradb/include/log0online.h +++ /dev/null @@ -1,187 +0,0 @@ -/***************************************************************************** - -Copyright (c) 2011-2012, Percona Inc. All Rights Reserved. - -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, Fifth Floor, Boston, MA 02110-1301, USA - -*****************************************************************************/ - -/**************************************************//** -@file include/log0online.h -Online database log parsing for changed page tracking -*******************************************************/ - -#ifndef log0online_h -#define log0online_h - -#include "univ.i" -#include "os0file.h" -#include "log0log.h" - -/** Single bitmap file information */ -typedef struct log_online_bitmap_file_struct log_online_bitmap_file_t; - -/** A set of bitmap files containing some LSN range */ -typedef struct log_online_bitmap_file_range_struct -log_online_bitmap_file_range_t; - -/** An iterator over changed page info */ -typedef struct log_bitmap_iterator_struct log_bitmap_iterator_t; - -/** Initialize the constant part of the log tracking subsystem */ -UNIV_INTERN -void -log_online_init(void); - -/** Initialize the dynamic part of the log tracking subsystem */ -UNIV_INTERN -void -log_online_read_init(void); - -/** Shut down the dynamic part of the log tracking subsystem */ -UNIV_INTERN -void -log_online_read_shutdown(void); - -/** Shut down the constant part of the log tracking subsystem */ -UNIV_INTERN -void -log_online_shutdown(void); - -/*********************************************************************//** -Reads and parses the redo log up to last checkpoint LSN to build the changed -page bitmap which is then written to disk. - -@return TRUE if log tracking succeeded, FALSE if bitmap write I/O error */ -UNIV_INTERN -ibool -log_online_follow_redo_log(void); -/*=============================*/ - -/************************************************************//** -Delete all the bitmap files for data less than the specified LSN. -If called with lsn == 0 (i.e. set by RESET request) or -IB_ULONGLONG_MAX, restart the bitmap file sequence, otherwise -continue it. - -@return FALSE to indicate success, TRUE for failure. */ -UNIV_INTERN -ibool -log_online_purge_changed_page_bitmaps( -/*==================================*/ - lsn_t lsn); /*!<in: LSN to purge files up to */ - -#define LOG_BITMAP_ITERATOR_START_LSN(i) \ - ((i).start_lsn) -#define LOG_BITMAP_ITERATOR_END_LSN(i) \ - ((i).end_lsn) -#define LOG_BITMAP_ITERATOR_SPACE_ID(i) \ - ((i).space_id) -#define LOG_BITMAP_ITERATOR_PAGE_NUM(i) \ - ((i).first_page_id + (i).bit_offset) -#define LOG_BITMAP_ITERATOR_PAGE_CHANGED(i) \ - ((i).changed) - -/*********************************************************************//** -Initializes log bitmap iterator. The minimum LSN is used for finding the -correct starting file with records and it there may be records returned by -the iterator that have LSN less than start_lsn. - -@return TRUE if the iterator is initialized OK, FALSE otherwise. */ -UNIV_INTERN -ibool -log_online_bitmap_iterator_init( -/*============================*/ - log_bitmap_iterator_t *i, /*!<in/out: iterator */ - lsn_t min_lsn, /*!<in: start LSN for the - iterator */ - lsn_t max_lsn); /*!<in: end LSN for the - iterator */ - -/*********************************************************************//** -Releases log bitmap iterator. */ -UNIV_INTERN -void -log_online_bitmap_iterator_release( -/*===============================*/ - log_bitmap_iterator_t *i); /*!<in/out: iterator */ - -/*********************************************************************//** -Iterates through bits of saved bitmap blocks. -Sequentially reads blocks from bitmap file(s) and interates through -their bits. Ignores blocks with wrong checksum. -@return TRUE if iteration is successful, FALSE if all bits are iterated. */ -UNIV_INTERN -ibool -log_online_bitmap_iterator_next( -/*============================*/ - log_bitmap_iterator_t *i); /*!<in/out: iterator */ - -/** Struct for single bitmap file information */ -struct log_online_bitmap_file_struct { - char name[FN_REFLEN]; /*!< Name with full path */ - pfs_os_file_t file; /*!< Handle to opened file */ - ib_uint64_t size; /*!< Size of the file */ - os_offset_t offset; /*!< Offset of the next read, - or count of already-read bytes - */ -}; - -/** Struct for a set of bitmap files containing some LSN range */ -struct log_online_bitmap_file_range_struct { - size_t count; /*!< Number of files */ - /*!< Dynamically-allocated array of info about individual files */ - struct files_t { - char name[FN_REFLEN]; /*!< Name of a file */ - lsn_t start_lsn; /*!< Starting LSN of data in - this file */ - ulong seq_num; /*!< Sequence number of this - file */ - } *files; -}; - -/** Struct for an iterator through all bits of changed pages bitmap blocks */ -struct log_bitmap_iterator_struct -{ - lsn_t max_lsn; /*!< End LSN of the - range */ - ibool failed; /*!< Has the iteration - stopped prematurely */ - log_online_bitmap_file_range_t in_files; /*!< The bitmap files - for this iterator */ - size_t in_i; /*!< Currently read - file index in in_files - */ - log_online_bitmap_file_t in; /*!< Currently read - file */ - ib_uint32_t bit_offset; /*!< bit offset inside - the current bitmap - block */ - lsn_t start_lsn; /*!< Start LSN of the - current bitmap block */ - lsn_t end_lsn; /*!< End LSN of the - current bitmap block */ - ib_uint32_t space_id; /*!< Current block - space id */ - ib_uint32_t first_page_id; /*!< Id of the first - page in the current - block */ - ibool last_page_in_run;/*!< "Last page in - run" flag value for the - current block */ - ibool changed; /*!< true if current - page was changed */ - byte* page; /*!< Bitmap block */ -}; - -#endif |