polardbxengine/mysql-test/suite/perfschema/t/innodb_x_gap_data_locks.test

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--echo #Test for Exclusive, GAP locks
-- connect (con1,localhost,root,,)
-- connect (con2,localhost,root,,)
-- connect (con3,localhost,root,,)
--disable_warnings
drop table if exists t1_x_gap;
--enable_warnings
--connection con1
use test;
create table t1_x_gap (id int(10) primary key, x int(10)) engine=INNODB;
insert into t1_x_gap values (1,10),(2,20),(3,30),(4,40),(5,50);
start transaction;
select * from t1_x_gap where id<5 for update;
--connection con3
select object_schema, object_name, lock_type, lock_mode, lock_status, lock_data
from performance_schema.data_locks
where object_name="t1_x_gap"
order by lock_type, lock_mode, lock_status, lock_data;
--connection con2
start transaction;
-- send
insert into t1_x_gap values (0,0);
-- connection default
let $wait_condition= SELECT COUNT(*)>=1 FROM performance_schema.data_locks
where OBJECT_NAME='t1_x_gap' and LOCK_STATUS='WAITING';
--source include/wait_condition.inc
--connection con3
# Do not display LOCK_DATA, it can be NULL,
# upon eviction from the innodb buffer pool
select object_schema, object_name, lock_type, lock_mode, lock_status
from performance_schema.data_locks
where object_name="t1_x_gap"
order by lock_type, lock_mode, lock_status;
--connection con1
commit;
# Wait for the con2 waiting lock to be granted, now that con1 is gone.
-- connection default
let $wait_condition= SELECT COUNT(*)=0 FROM performance_schema.data_locks
where OBJECT_NAME='t1_x_gap' and LOCK_STATUS='WAITING';
--source include/wait_condition.inc
--connection con3
select object_schema, object_name, lock_type, lock_mode, lock_status
from performance_schema.data_locks
where object_name="t1_x_gap";
--connection con2
-- reap
commit;
--connection con1
drop table t1_x_gap;
--connection default
--disconnect con1
--disconnect con2
--disconnect con3
let $count_sessions= 1;
--source include/wait_until_count_sessions.inc