#
# wl#9383 INNODB: ADD AN OPTION TO TURN OFF/ON DEADLOCK CHECKER
#

--source include/have_innodb.inc
--source include/count_sessions.inc

let $have_deadlock=`select @@GLOBAL.innodb_deadlock_detect`;

connection default;

CREATE TABLE t1(
	id	INT,
	PRIMARY KEY(id)
) ENGINE=InnoDB;

INSERT INTO t1 VALUES(1), (2), (3);

# We are not interested query results, only errors
--disable_result_log
BEGIN;

SELECT * FROM t1 WHERE id = 1 LOCK IN SHARE MODE;

connect (con1,localhost,root,,);
BEGIN;
SELECT * FROM t1 WHERE id = 2 LOCK IN SHARE MODE;

connect (con2,localhost,root,,);
BEGIN;
SELECT * FROM t1 WHERE id = 2 LOCK IN SHARE MODE;

send SELECT * FROM t1 WHERE id = 1 FOR UPDATE;

connection default;
send SELECT * FROM t1 WHERE id = 2 FOR UPDATE;

connection con2;
if (!$have_deadlock) {
--error ER_LOCK_WAIT_TIMEOUT
reap;
disconnect con1;
}
if ($have_deadlock) {
connection con1;
COMMIT;
disconnect con1;
connection con2;
--error 0,ER_LOCK_DEADLOCK,ER_LOCK_WAIT_TIMEOUT
reap;
}
ROLLBACK;
disconnect con2;

#
# Note here that con1 is the older transaction as it
# query started wait first. Thus, con1 gets lock
# wait timeout first. There is possibility that
# default connection gets lock timeout also or
# as con1 is rolled back it gets the locks it waited
# and does the update.
#
connection default;
if (!$have_deadlock) {
--error 0,ER_LOCK_WAIT_TIMEOUT
reap;
}
if ($have_deadlock) {
--error 0,ER_LOCK_DEADLOCK
reap;
}

ROLLBACK;

--enable_result_log

DROP TABLE t1;

--source include/wait_until_count_sessions.inc