diff options
Diffstat (limited to 'storage/xtradb/include/log0recv.h')
| -rw-r--r-- | storage/xtradb/include/log0recv.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/storage/xtradb/include/log0recv.h b/storage/xtradb/include/log0recv.h index 15065267250..fdffd86e4c4 100644 --- a/storage/xtradb/include/log0recv.h +++ b/storage/xtradb/include/log0recv.h @@ -32,6 +32,28 @@ Created 9/20/1997 Heikki Tuuri #include "hash0hash.h" #include "log0log.h" +/******************************************************//** +Checks the 4-byte checksum to the trailer checksum field of a log +block. We also accept a log block in the old format before +InnoDB-3.23.52 where the checksum field contains the log block number. +@return TRUE if ok, or if the log block may be in the format of InnoDB +version predating 3.23.52 */ +UNIV_INTERN +ibool +log_block_checksum_is_ok_or_old_format( +/*===================================*/ + const byte* block); /*!< in: pointer to a log block */ + +/*******************************************************//** +Calculates the new value for lsn when more data is added to the log. */ +UNIV_INTERN +ib_uint64_t +recv_calc_lsn_on_data_add( +/*======================*/ + ib_uint64_t lsn, /*!< in: old lsn */ + ib_uint64_t len); /*!< in: this many bytes of data is + added, log block headers not included */ + #ifdef UNIV_HOTBACKUP extern ibool recv_replay_file_ops; @@ -182,6 +204,21 @@ UNIV_INTERN void recv_recovery_rollback_active(void); /*===============================*/ + +/*******************************************************************//** +Tries to parse a single log record and returns its length. +@return length of the record, or 0 if the record was not complete */ +UNIV_INTERN +ulint +recv_parse_log_rec( +/*===============*/ + byte* ptr, /*!< in: pointer to a buffer */ + byte* end_ptr,/*!< in: pointer to the buffer end */ + byte* type, /*!< out: type */ + ulint* space, /*!< out: space id */ + ulint* page_no,/*!< out: page number */ + byte** body); /*!< out: log record body start */ + /*******************************************************//** Scans log from a buffer and stores new log data to the parsing buffer. Parses and hashes the log records if new data found. Unless |