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/* Copyright (C) 2006 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
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 02110-1335 USA */
/*
WL#3234 Maria control file
First version written by Guilhem Bichot on 2006-04-27.
*/
#ifndef _ma_control_file_h
#define _ma_control_file_h
C_MODE_START
#define CONTROL_FILE_BASE_NAME "aria_log_control"
/*
Major version for control file. Should only be changed when doing
big changes that made the new control file incompatible with all
older versions of Maria.
*/
#define CONTROL_FILE_VERSION 1
/* Here is the interface of this module */
/*
LSN of the last checkoint
(if last_checkpoint_lsn == LSN_IMPOSSIBLE then there was never a checkpoint)
*/
extern volatile LSN last_checkpoint_lsn;
/*
Last log number (if last_logno == FILENO_IMPOSSIBLE then there is no log
file yet)
*/
extern uint32 last_logno;
extern TrID max_trid_in_control_file, max_long_trid;
extern uint8 recovery_failures;
extern my_bool maria_multi_threaded, maria_in_recovery;
typedef enum enum_control_file_error {
CONTROL_FILE_OK= 0,
CONTROL_FILE_TOO_SMALL,
CONTROL_FILE_TOO_BIG,
CONTROL_FILE_BAD_MAGIC_STRING,
CONTROL_FILE_BAD_VERSION,
CONTROL_FILE_BAD_CHECKSUM,
CONTROL_FILE_BAD_HEAD_CHECKSUM,
CONTROL_FILE_MISSING,
CONTROL_FILE_INCONSISTENT_INFORMATION,
CONTROL_FILE_WRONG_BLOCKSIZE,
CONTROL_FILE_LOCKED,
CONTROL_FILE_UNKNOWN_ERROR /* any other error */
} CONTROL_FILE_ERROR;
CONTROL_FILE_ERROR ma_control_file_open(my_bool create_if_missing,
my_bool print_error,
my_bool wait_for_lock,
int open_flags);
int ma_control_file_write_and_force(LSN last_checkpoint_lsn_arg,
uint32 last_logno_arg, TrID max_trid_arg,
uint8 recovery_failures_arg);
/* For simple programs that creates Aria files*/
CONTROL_FILE_ERROR ma_control_file_open_or_create();
int ma_control_file_end(void);
my_bool ma_control_file_inited(void);
my_bool print_aria_log_control(void);
C_MODE_END
#endif
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