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Merge InnoDB-4.0.5b: minor improvements to foreign keys, more logical data dictionary lock
This commit is contained in:
heikki@hundin.mysql.fi
2002-11-06 00:41:27 +02:00
parent a6e5f9217c
commit db1693101b
19 changed files with 490 additions and 196 deletions
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17
innobase/srv/srv0srv.c
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@ -51,6 +51,10 @@ Created 10/8/1995 Heikki Tuuri
#include "srv0start.h"
#include "row0mysql.h"
/* This is set to TRUE if the MySQL user has set it in MySQL; currently
affects only FOREIGN KEY definition parsing */
ibool srv_lower_case_table_names = FALSE;
/* Buffer which can be used in printing fatal error messages */
char srv_fatal_errbuf[5000];
@ -2064,6 +2068,7 @@ srv_suspend_mysql_thread(
os_event_t event;
double wait_time;
trx_t* trx;
ibool had_dict_lock = FALSE;
ut_ad(!mutex_own(&kernel_mutex));
@ -2107,18 +2112,22 @@ srv_suspend_mysql_thread(
srv_conc_force_exit_innodb(thr_get_trx(thr));
/* Release possible foreign key check latch */
if (trx->has_dict_operation_lock) {
if (trx->dict_operation_lock_mode == RW_S_LATCH) {
rw_lock_s_unlock(&dict_operation_lock);
had_dict_lock = TRUE;
row_mysql_unfreeze_data_dictionary(trx);
}
ut_a(trx->dict_operation_lock_mode == 0);
/* Wait for the release */
os_event_wait(event);
if (trx->has_dict_operation_lock) {
if (had_dict_lock) {
rw_lock_s_lock(&dict_operation_lock);
row_mysql_freeze_data_dictionary(trx);
}
/* Return back inside InnoDB */