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Merge InnoDB-4.0.5: new isolation levels READ COMMITTED and READ UNCOMMITTED now supported, selective deadlock resolution
mysqld.cc:
  Change MySQL default isolation level to REPEATABLE READ; note that InnoDB has always had that default, and BDB and MyISAM always run at SERIALIZABLE level anyway
This commit is contained in:
heikki@hundin.mysql.fi
2002-10-29 23:16:46 +02:00
parent 2452182844
commit 9153d88c6b
51 changed files with 1577 additions and 580 deletions
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30
innobase/include/srv0srv.h
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@@ -57,8 +57,6 @@ extern ulint srv_flush_log_at_trx_commit;
extern byte srv_latin1_ordering[256];/* The sort order table of the latin1
character set */
extern ibool srv_use_native_aio;
extern ulint srv_pool_size;
extern ulint srv_mem_pool_size;
extern ulint srv_lock_table_size;
@@ -70,8 +68,9 @@ extern dulint srv_archive_recovery_limit_lsn;
extern ulint srv_lock_wait_timeout;
extern char* srv_unix_file_flush_method_str;
extern char* srv_file_flush_method_str;
extern ulint srv_unix_file_flush_method;
extern ulint srv_win_file_flush_method;
extern ulint srv_force_recovery;
extern ulint srv_thread_concurrency;
@@ -154,13 +153,19 @@ typedef struct srv_sys_struct srv_sys_t;
/* The server system */
extern srv_sys_t* srv_sys;
/* Alternatives for the field flush option in Unix; see the InnoDB manual about
/* Alternatives for the file flush option in Unix; see the InnoDB manual about
what these mean */
#define SRV_UNIX_FDATASYNC 1
#define SRV_UNIX_FDATASYNC 1 /* This is the default; it is currently mapped
to a call of fsync() because fdatasync()
seemed to corrupt files in Linux and Solaris */
#define SRV_UNIX_O_DSYNC 2
#define SRV_UNIX_LITTLESYNC 3
#define SRV_UNIX_NOSYNC 4
/* Alternatives for file i/o in Windows */
#define SRV_WIN_IO_NORMAL 1
#define SRV_WIN_IO_UNBUFFERED 2 /* This is the default */
/* Alternatives for srv_force_recovery. Non-zero values are intended
to help the user get a damaged database up so that he can dump intact
tables and rows with SELECT INTO OUTFILE. The database must not otherwise
@@ -311,15 +316,17 @@ srv_conc_exit_innodb(
trx_t* trx); /* in: transaction object associated with the
thread */
/*******************************************************************
Puts a MySQL OS thread to wait for a lock to be released. */
Puts a MySQL OS thread to wait for a lock to be released. If an error
occurs during the wait trx->error_state associated with thr is
!= DB_SUCCESS when we return. DB_LOCK_WAIT_TIMEOUT and DB_DEADLOCK
are possible errors. DB_DEADLOCK is returned if selective deadlock
resolution chose this transaction as a victim. */
ibool
void
srv_suspend_mysql_thread(
/*=====================*/
/* out: TRUE if the lock wait timeout was
exceeded */
que_thr_t* thr); /* in: query thread associated with
the MySQL OS thread */
que_thr_t* thr); /* in: query thread associated with the MySQL
OS thread */
/************************************************************************
Releases a MySQL OS thread waiting for a lock to be released, if the
thread is already suspended. */
@@ -407,3 +414,4 @@ struct srv_sys_struct{
extern ulint srv_n_threads_active[];
#endif