diff options
Diffstat (limited to 'innobase/include/trx0sys.h')
| -rw-r--r-- | innobase/include/trx0sys.h | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/innobase/include/trx0sys.h b/innobase/include/trx0sys.h index 0295cd6abff..f2eded697ec 100644 --- a/innobase/include/trx0sys.h +++ b/innobase/include/trx0sys.h @@ -218,6 +218,22 @@ trx_in_trx_list( /*============*/ /* out: TRUE if is in */ trx_t* in_trx);/* in: trx */ +/********************************************************************* +Updates the offset information about the end of the MySQL binlog entry +which corresponds to the transaction just being committed. */ + +void +trx_sys_update_mysql_binlog_offset( +/*===============================*/ + trx_t* trx, /* in: transaction being committed */ + mtr_t* mtr); /* in: mtr */ +/********************************************************************* +Prints to stderr the MySQL binlog offset info in the trx system header if +the magic number shows it valid. */ + +void +trx_sys_print_mysql_binlog_offset(void); +/*===================================*/ /* The automatically created system rollback segment has this id */ #define TRX_SYS_SYSTEM_RSEG_ID 0 @@ -236,7 +252,7 @@ therefore 256 */ /* Transaction system header; protected by trx_sys->mutex */ /*-------------------------------------------------------------*/ -#define TRX_SYS_TRX_ID_STORE 0 /* The maximum trx id or trx number +#define TRX_SYS_TRX_ID_STORE 0 /* the maximum trx id or trx number modulo TRX_SYS_TRX_ID_UPDATE_MARGIN written to a file page by any transaction; the assignment of @@ -252,6 +268,23 @@ therefore 256 */ segment specification slots */ /*-------------------------------------------------------------*/ +#define TRX_SYS_MYSQL_LOG_NAME_LEN 32 +#define TRX_SYS_MYSQL_LOG_MAGIC_N 873422344 + +/* The offset of the MySQL binlog offset info on the trx system header page */ +#define TRX_SYS_MYSQL_LOG_INFO (UNIV_PAGE_SIZE - 300) +#define TRX_SYS_MYSQL_LOG_MAGIC_N_FLD 0 /* magic number which shows + if we have valid data in the + MySQL binlog info; the value + is ..._MAGIC_N if yes */ +#define TRX_SYS_MYSQL_LOG_NAME 4 /* MySQL log file name */ +#define TRX_SYS_MYSQL_LOG_OFFSET_HIGH (4 + TRX_SYS_MYSQL_LOG_NAME_LEN) + /* high 4 bytes of the offset + within that file */ +#define TRX_SYS_MYSQL_LOG_OFFSET_LOW (8 + TRX_SYS_MYSQL_LOG_NAME_LEN) + /* low 4 bytes of the offset + within that file */ + /* The offset of the doublewrite buffer header on the trx system header page */ #define TRX_SYS_DOUBLEWRITE (UNIV_PAGE_SIZE - 200) /*-------------------------------------------------------------*/ |