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82 lines
2.7 KiB
C
82 lines
2.7 KiB
C
/* Copyright (C) 2006 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
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/*
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WL#3234 Maria control file
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First version written by Guilhem Bichot on 2006-04-27.
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*/
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#ifndef _ma_control_file_h
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#define _ma_control_file_h
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C_MODE_START
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#define CONTROL_FILE_BASE_NAME "aria_log_control"
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/*
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Major version for control file. Should only be changed when doing
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big changes that made the new control file incompatible with all
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older versions of Maria.
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*/
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#define CONTROL_FILE_VERSION 1
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/* Here is the interface of this module */
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/*
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LSN of the last checkoint
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(if last_checkpoint_lsn == LSN_IMPOSSIBLE then there was never a checkpoint)
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*/
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extern volatile LSN last_checkpoint_lsn;
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/*
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Last log number (if last_logno == FILENO_IMPOSSIBLE then there is no log
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file yet)
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*/
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extern uint32 last_logno;
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extern TrID max_trid_in_control_file, max_long_trid;
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extern uint8 recovery_failures;
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extern my_bool maria_multi_threaded, maria_in_recovery;
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typedef enum enum_control_file_error {
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CONTROL_FILE_OK= 0,
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CONTROL_FILE_TOO_SMALL,
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CONTROL_FILE_TOO_BIG,
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CONTROL_FILE_BAD_MAGIC_STRING,
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CONTROL_FILE_BAD_VERSION,
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CONTROL_FILE_BAD_CHECKSUM,
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CONTROL_FILE_BAD_HEAD_CHECKSUM,
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CONTROL_FILE_MISSING,
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CONTROL_FILE_INCONSISTENT_INFORMATION,
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CONTROL_FILE_WRONG_BLOCKSIZE,
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CONTROL_FILE_LOCKED,
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CONTROL_FILE_UNKNOWN_ERROR /* any other error */
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} CONTROL_FILE_ERROR;
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CONTROL_FILE_ERROR ma_control_file_open(my_bool create_if_missing,
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my_bool print_error,
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my_bool wait_for_lock,
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int open_flags);
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int ma_control_file_write_and_force(LSN last_checkpoint_lsn_arg,
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uint32 last_logno_arg, TrID max_trid_arg,
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uint8 recovery_failures_arg);
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/* For simple programs that creates Aria files*/
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CONTROL_FILE_ERROR ma_control_file_open_or_create();
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int ma_control_file_end(void);
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my_bool ma_control_file_inited(void);
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my_bool print_aria_log_control(void);
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C_MODE_END
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#endif
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