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##
## WL#4818, 4.1.3 MUTEXES, RW-LOCKS, ...
##
## Functional testing of mutexes and RW-locks
##
--source include/not_embedded.inc
--source include/have_perfschema.inc
UPDATE performance_schema.setup_instruments SET enabled = 'NO', timed = 'YES';
UPDATE performance_schema.setup_instruments SET enabled = 'YES'
WHERE name LIKE 'wait/synch/mutex/%'
OR name LIKE 'wait/synch/rwlock/%';
# reset lost counters
flush status;
# Make sure objects are instrumented
select NAME from performance_schema.mutex_instances
where NAME = 'wait/synch/mutex/sql/LOCK_open';
select NAME from performance_schema.rwlock_instances
where NAME = 'wait/synch/rwlock/sql/LOCK_grant';
--disable_warnings
DROP TABLE IF EXISTS t1;
--enable_warnings
#
# TODO: Change to InnoDB when it gets instrumentation
#
CREATE TABLE t1 (id INT PRIMARY KEY, b CHAR(100) DEFAULT 'initial value')
ENGINE=MyISAM;
INSERT INTO t1 (id) VALUES (1), (2), (3), (4), (5), (6), (7), (8);
#
# FM1: Count for mutex should increase with instrumentation enabled and
# FM2: Count for mutex should not increase with instrumentation disabled
#
TRUNCATE TABLE performance_schema.events_waits_history_long;
TRUNCATE TABLE performance_schema.events_waits_history;
TRUNCATE TABLE performance_schema.events_waits_current;
SELECT * FROM t1 WHERE id = 1;
SET @before_count = (SELECT SUM(TIMER_WAIT)
FROM performance_schema.events_waits_history_long
WHERE (EVENT_NAME = 'wait/synch/mutex/sql/LOCK_open'));
SELECT * FROM t1;
SET @after_count = (SELECT SUM(TIMER_WAIT)
FROM performance_schema.events_waits_history_long
WHERE (EVENT_NAME = 'wait/synch/mutex/sql/LOCK_open'));
SELECT IF((@after_count - @before_count) > 0, 'Success', 'Failure') test_fm1_timed;
UPDATE performance_schema.setup_instruments SET enabled = 'NO'
WHERE NAME = 'wait/synch/mutex/sql/LOCK_open';
TRUNCATE TABLE performance_schema.events_waits_history_long;
TRUNCATE TABLE performance_schema.events_waits_history;
TRUNCATE TABLE performance_schema.events_waits_current;
SELECT * FROM t1 WHERE id = 1;
SET @before_count = (SELECT SUM(TIMER_WAIT)
FROM performance_schema.events_waits_history_long
WHERE (EVENT_NAME = 'wait/synch/mutex/sql/LOCK_open'));
SELECT * FROM t1;
SET @after_count = (SELECT SUM(TIMER_WAIT)
FROM performance_schema.events_waits_history_long
WHERE (EVENT_NAME = 'wait/synch/mutex/sql/LOCK_open'));
SELECT IF((COALESCE(@after_count, 0) - COALESCE(@before_count, 0)) = 0, 'Success', 'Failure') test_fm2_timed;
#
# Repeat for RW-lock
#
TRUNCATE TABLE performance_schema.events_waits_history_long;
TRUNCATE TABLE performance_schema.events_waits_history;
TRUNCATE TABLE performance_schema.events_waits_current;
SELECT * FROM t1 WHERE id = 1;
SET @before_count = (SELECT SUM(TIMER_WAIT)
FROM performance_schema.events_waits_history_long
WHERE (EVENT_NAME = 'wait/synch/rwlock/sql/LOCK_grant'));
SELECT * FROM t1;
SET @after_count = (SELECT SUM(TIMER_WAIT)
FROM performance_schema.events_waits_history_long
WHERE (EVENT_NAME = 'wait/synch/rwlock/sql/LOCK_grant'));
SELECT IF((@after_count - @before_count) > 0, 'Success', 'Failure') test_fm1_rw_timed;
UPDATE performance_schema.setup_instruments SET enabled = 'NO'
WHERE NAME = 'wait/synch/rwlock/sql/LOCK_grant';
TRUNCATE TABLE performance_schema.events_waits_history_long;
TRUNCATE TABLE performance_schema.events_waits_history;
TRUNCATE TABLE performance_schema.events_waits_current;
SELECT * FROM t1 WHERE id = 1;
SET @before_count = (SELECT SUM(TIMER_WAIT)
FROM performance_schema.events_waits_history_long
WHERE (EVENT_NAME = 'wait/synch/rwlock/sql/LOCK_grant'));
SELECT * FROM t1;
SET @after_count = (SELECT SUM(TIMER_WAIT)
FROM performance_schema.events_waits_history_long
WHERE (EVENT_NAME = 'wait/synch/rwlock/sql/LOCK_grant'));
SELECT IF((COALESCE(@after_count, 0) - COALESCE(@before_count, 0)) = 0, 'Success', 'Failure') test_fm2_rw_timed;
# Clean-up.
UPDATE performance_schema.setup_instruments SET enabled = 'YES';
DROP TABLE t1;
# In case of failure, will indicate the root cause
show status like "performance_schema%";
|
