rpl_get_lock.test

这是linux下运行的mysql软件包,可用于linux 下安装 php + mysql + apach 的网络配置

source include/master-slave.inc;

create table t1(n int);
insert into t1 values(get_lock("lock",2));
dirty_close master;
connection master1;
select get_lock("lock",2);

select release_lock("lock");
#ignore 
disable_query_log;
let $1=2000;
while ($1)
{
  do get_lock("lock",2);
  do release_lock("lock");
  dec $1;
}
enable_query_log;
save_master_pos;
connection slave;
sync_with_master;
select get_lock("lock",3);
select * from t1;
# There is no point in testing REPLICATIION of the IS_*_LOCK
# functions; slave does not run with the same concurrency context as
# master (generally in slave we can't know that on master this lock
# was already held by another connection and so that the the
# get_lock() we're replicating timed out on master hence returned 0,
# or that the is_free_lock() we're playing returned 0 etc.
# But here all we do is test these functions outside of replication.
select is_free_lock("lock"), is_used_lock("lock") = connection_id();
explain extended select is_free_lock("lock"), is_used_lock("lock");
# Check lock functions
select is_free_lock("lock2");
select is_free_lock(NULL);
connection master1;
drop table t1;
save_master_pos;
connection slave;
sync_with_master;

# End of 4.1 tests