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MDEV-5864 - Reduce usage of LOCK_open: TABLE_SHARE::tdc.free_tables

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Let TABLE_SHARE::tdc.free_tables, TABLE_SHARE::tdc.all_tables,
TABLE_SHARE::tdc.flushed and corresponding invariants be protected by
per-share TABLE_SHARE::tdc.LOCK_table_share instead of global LOCK_open.
This commit is contained in:
Sergey Vojtovich
2014-03-20 11:11:13 +04:00
parent 8250824a12
commit e4fde57712
16 changed files with 122 additions and 134 deletions
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14
mysql-test/suite/perfschema/r/func_mutex.result
View File

@ -4,9 +4,9 @@ WHERE name LIKE 'wait/synch/mutex/%'
OR name LIKE 'wait/synch/rwlock/%';
flush status;
select NAME from performance_schema.mutex_instances
where NAME = 'wait/synch/mutex/sql/LOCK_open';
where NAME = 'wait/synch/mutex/sql/TABLE_SHARE::tdc.LOCK_table_share' GROUP BY NAME;
NAME
wait/synch/mutex/sql/LOCK_open
wait/synch/mutex/sql/TABLE_SHARE::tdc.LOCK_table_share
select NAME from performance_schema.rwlock_instances
where NAME = 'wait/synch/rwlock/sql/LOCK_grant';
NAME
@ -23,7 +23,7 @@ id b
1 initial value
SET @before_count = (SELECT SUM(TIMER_WAIT)
FROM performance_schema.events_waits_history_long
WHERE (EVENT_NAME = 'wait/synch/mutex/sql/LOCK_open'));
WHERE (EVENT_NAME = 'wait/synch/mutex/sql/TABLE_SHARE::tdc.LOCK_table_share'));
SELECT * FROM t1;
id b
1 initial value
@ -36,12 +36,12 @@ id b
8 initial value
SET @after_count = (SELECT SUM(TIMER_WAIT)
FROM performance_schema.events_waits_history_long
WHERE (EVENT_NAME = 'wait/synch/mutex/sql/LOCK_open'));
WHERE (EVENT_NAME = 'wait/synch/mutex/sql/TABLE_SHARE::tdc.LOCK_table_share'));
SELECT IF((@after_count - @before_count) > 0, 'Success', 'Failure') test_fm1_timed;
test_fm1_timed
Success
UPDATE performance_schema.setup_instruments SET enabled = 'NO'
WHERE NAME = 'wait/synch/mutex/sql/LOCK_open';
WHERE NAME = 'wait/synch/mutex/sql/TABLE_SHARE::tdc.LOCK_table_share';
TRUNCATE TABLE performance_schema.events_waits_history_long;
TRUNCATE TABLE performance_schema.events_waits_history;
TRUNCATE TABLE performance_schema.events_waits_current;
@ -50,7 +50,7 @@ id b
1 initial value
SET @before_count = (SELECT SUM(TIMER_WAIT)
FROM performance_schema.events_waits_history_long
WHERE (EVENT_NAME = 'wait/synch/mutex/sql/LOCK_open'));
WHERE (EVENT_NAME = 'wait/synch/mutex/sql/TABLE_SHARE::tdc.LOCK_table_share'));
SELECT * FROM t1;
id b
1 initial value
@ -63,7 +63,7 @@ id b
8 initial value
SET @after_count = (SELECT SUM(TIMER_WAIT)
FROM performance_schema.events_waits_history_long
WHERE (EVENT_NAME = 'wait/synch/mutex/sql/LOCK_open'));
WHERE (EVENT_NAME = 'wait/synch/mutex/sql/TABLE_SHARE::tdc.LOCK_table_share'));
SELECT IF((COALESCE(@after_count, 0) - COALESCE(@before_count, 0)) = 0, 'Success', 'Failure') test_fm2_timed;
test_fm2_timed
Success