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Replaced COND_refresh with COND_global_read_lock becasue of a bug in NTPL threads when using different mutexes as arguments to pthread_cond_wait()
The original code caused a hang in FLUSH TABLES WITH READ LOCK in some circumstances because pthread_cond_broadcast() was not delivered to other threads.
This fixes:
Bug#16986: Deadlock condition with MyISAM tables
Bug#20048: FLUSH TABLES WITH READ LOCK causes a deadlock
This commit is contained in:
monty@mysql.com
2006-05-24 17:21:35 +03:00
parent 97b941d924
commit 9e9ca8b6eb
8 changed files with 142 additions and 14 deletions
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7
mysql-test/r/flush.result
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@@ -48,3 +48,10 @@ lock table t1 read, t2 read, t3 read;
flush tables with read lock;
unlock tables;
drop table t1, t2, t3;
create table t1 (c1 int);
create table t2 (c1 int);
lock table t1 write;
flush tables with read lock;
insert into t2 values(1);
unlock tables;
drop table t1, t2;