A fix for Bug#29049 lock_multi fails in rare case.

The patch changes the test case only.
The fix is to replace all 'sleep's with wait_condition. This makes
the test deterministic and also ~300 times faster.

mysql-test/r/lock_multi.result

@@ -13,9 +13,9 @@ insert into t1 values (1);
 lock tables t1 read;
 update low_priority t1 set n = 4;
 select n from t1;
-unlock tables;
 n
 1
+unlock tables;
 drop table t1;
 create table t1 (a int, b int);
 create table t2 (c int, d int);
@@ -43,6 +43,7 @@ insert t1 select * from t2;
 drop table t2;
 ERROR 42S02: Table 'test.t2' doesn't exist
 drop table t1;
+End of 4.1 tests
 create table t1(a int);
 lock tables t1 write;
 show columns from t1;
@@ -91,10 +92,11 @@ DROP DATABASE mysqltest_1;
 ERROR HY000: Can't drop database 'mysqltest_1'; database doesn't exist
 create table t1 (f1 int(12) unsigned not null auto_increment, primary key(f1)) engine=innodb;
 lock tables t1 write;
-alter table t1 auto_increment=0; alter table t1 auto_increment=0; alter table t1 auto_increment=0; alter table t1 auto_increment=0; alter table t1 auto_increment=0; //
-alter table t1 auto_increment=0; alter table t1 auto_increment=0; alter table t1 auto_increment=0; alter table t1 auto_increment=0; alter table t1 auto_increment=0; //
+alter table t1 auto_increment=0;
+alter table t1 auto_increment=0;
 unlock tables;
 drop table t1;
+End of 5.0 tests
 create table t1 (i int);
 lock table t1 read;
 update t1 set i= 10;;

mysql-test/t/lock_multi.test

@@ -16,10 +16,16 @@ lock tables t1 write;
 connection writer;
 send update low_priority t1 set n = 4;
 connection reader;
---sleep 2
+let $wait_condition=
+  select count(*) = 1 from information_schema.processlist
+  where state = "Locked" and info = "update low_priority t1 set n = 4";
+--source include/wait_condition.inc
 send select n from t1;
 connection locker;
---sleep 2
+let $wait_condition=
+  select count(*) = 1 from information_schema.processlist
+  where state = "Locked" and info = "select n from t1";
+--source include/wait_condition.inc
 unlock tables;
 connection writer;
 reap;
@@ -34,15 +40,15 @@ lock tables t1 read;
 connection writer;
 send update low_priority t1 set n = 4;
 connection reader;
---sleep 2
-send select n from t1;
+let $wait_condition=
+  select count(*) = 1 from information_schema.processlist
+  where state = "Locked" and info = "update low_priority t1 set n = 4";
+--source include/wait_condition.inc
+select n from t1;
 connection locker;
---sleep 2
 unlock tables;
 connection writer;
 reap;
-connection reader;
-reap;
 drop table t1;
 
 #
@@ -58,13 +64,9 @@ insert into t1 values(2,2);
 insert into t2 values(1,2);
 lock table t1 read;
 connection writer;
---sleep 2
-send update t1,t2 set c=a where b=d;
+update t1,t2 set c=a where b=d;
 connection reader;
---sleep 2
 select c from t2;
-connection writer;
-reap;
 connection locker;
 drop table t1;
 drop table t2;
@@ -73,7 +75,7 @@ drop table t2;
 # Test problem when using locks on many tables and droping a table that
 # is to-be-locked by another thread
 #
-
+#
 connection locker;
 create table t1 (a int);
 create table t2 (a int);
@@ -81,6 +83,10 @@ lock table t1 write, t2 write;
 connection reader;
 send insert t1 select * from t2;
 connection locker;
+let $wait_condition=
+  select count(*) = 1 from information_schema.processlist
+  where state = "Locked" and info = "insert t1 select * from t2";
+--source include/wait_condition.inc
 drop table t2;
 connection reader;
 --error 1146
@@ -99,6 +105,10 @@ lock table t1 write, t2 write, t1 as t1_2 write, t2 as t2_2 write;
 connection reader;
 send insert t1 select * from t2;
 connection locker;
+let $wait_condition=
+  select count(*) = 1 from information_schema.processlist
+  where state = "Locked" and info = "insert t1 select * from t2";
+--source include/wait_condition.inc
 drop table t2;
 connection reader;
 --error 1146
@@ -107,7 +117,7 @@ connection locker;
 drop table t1;
 
 
-# End of 4.1 tests
+--echo End of 4.1 tests
 
 #
 # BUG#9998 - MySQL client hangs on USE "database"
@@ -131,15 +141,18 @@ connection locker;
 use mysql;
 LOCK TABLES columns_priv WRITE, db WRITE, host WRITE, user WRITE;
 FLUSH TABLES;
---sleep 1
 #
 connection reader;
 use mysql;
 #NOTE:  This must be a multi-table select, otherwise the deadlock will not occur
 send SELECT user.Select_priv FROM user, db WHERE user.user = db.user LIMIT 1;
---sleep 1
 #
 connection locker;
+let $wait_condition=
+  select count(*) = 1 from information_schema.processlist
+  where state = "Locked" and info = 
+  "SELECT user.Select_priv FROM user, db WHERE user.user = db.user LIMIT 1";
+--source include/wait_condition.inc
 # Make test case independent from earlier grants.
 --replace_result "Table is already up to date" "OK"
 OPTIMIZE TABLES columns_priv, db, host, user;
@@ -163,10 +176,13 @@ LOCK TABLE t1 WRITE;
 # This waits until t1 is unlocked.
 connection locker;
 send FLUSH TABLES WITH READ LOCK;
---sleep 1
 #
-# This must not block.
 connection writer;
+let $wait_condition=
+  select count(*) = 1 from information_schema.processlist
+  where state = "Flushing tables" and info = "FLUSH TABLES WITH READ LOCK";
+--source include/wait_condition.inc
+# This must not block.
 CREATE TABLE t2 (c1 int);
 UNLOCK TABLES;
 #
@@ -187,10 +203,13 @@ LOCK TABLE t1 WRITE;
 # This waits until t1 is unlocked.
 connection locker;
 send FLUSH TABLES WITH READ LOCK;
---sleep 1
 #
 # This must not block.
 connection writer;
+let $wait_condition=
+  select count(*) = 1 from information_schema.processlist
+  where state = "Flushing tables" and info = "FLUSH TABLES WITH READ LOCK";
+--source include/wait_condition.inc
 --error 1100
 CREATE TABLE t2 AS SELECT * FROM t1;
 UNLOCK TABLES;
@@ -219,11 +238,15 @@ FLUSH TABLES WITH READ LOCK;
 # wait in wait_if_global_read_lock().
 connection con2;
 send DROP DATABASE mysqltest_1;
---sleep 1
 #
 # With bug in place: try to acquire LOCK_mysql_create_table...
 # When fixed: Reject dropping db because of the read lock.
 connection con1;
+let $wait_condition=
+  select count(*) = 1 from information_schema.processlist
+  where state = "Waiting for release of readlock"
+  and info = "DROP DATABASE mysqltest_1";
+--source include/wait_condition.inc
 --error ER_CANT_UPDATE_WITH_READLOCK
 DROP DATABASE mysqltest_1;
 UNLOCK TABLES;
@@ -249,17 +272,18 @@ create table t1 (f1 int(12) unsigned not null auto_increment, primary key(f1)) e
 --enable_warnings
 lock tables t1 write;
 connection writer;
---sleep 2
-delimiter //;
-send alter table t1 auto_increment=0; alter table t1 auto_increment=0; alter table t1 auto_increment=0; alter table t1 auto_increment=0; alter table t1 auto_increment=0; //
-delimiter ;//
+send alter table t1 auto_increment=0;
 connection reader;
---sleep 2
-delimiter //;
-send alter table t1 auto_increment=0; alter table t1 auto_increment=0; alter table t1 auto_increment=0; alter table t1 auto_increment=0; alter table t1 auto_increment=0; //
-delimiter ;//
+let $wait_condition=
+  select count(*) = 1 from information_schema.processlist
+  where state = "Locked" and info = "alter table t1 auto_increment=0";
+--source include/wait_condition.inc
+send alter table t1 auto_increment=0;
 connection locker;
---sleep 2
+let $wait_condition=
+  select count(*) = 2 from information_schema.processlist
+  where state = "Locked" and info = "alter table t1 auto_increment=0";
+--source include/wait_condition.inc
 unlock tables;
 connection writer;
 reap;
@@ -267,8 +291,8 @@ connection reader;
 reap;
 connection locker;
 drop table t1;
-
-# End of 5.0 tests
+#
+--echo End of 5.0 tests
 
 
 #