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b82abc7163
trx_t::autoinc_locks: Use small_vector<lock_t*,4> in order to avoid any dynamic memory allocation in the most common case (a statement is holding AUTO_INCREMENT locks on at most 4 tables or partitions). lock_cancel_waiting_and_release(): Instead of removing elements from the middle, simply assign nullptr, like lock_table_remove_autoinc_lock(). The added test innodb.auto_increment_lock_mode covers the dynamic memory allocation as well as nondeterministically (occasionally) covers the out-of-order lock release in lock_table_remove_autoinc_lock(). Reviewed by: Debarun Banerjee
43 lines
1.3 KiB
Text
43 lines
1.3 KiB
Text
CREATE TABLE t1(a TINYINT UNSIGNED AUTO_INCREMENT PRIMARY KEY) ENGINE=InnoDB;
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CREATE TABLE t2(a TINYINT UNSIGNED AUTO_INCREMENT PRIMARY KEY) ENGINE=InnoDB;
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CREATE TABLE t3(a TINYINT UNSIGNED AUTO_INCREMENT PRIMARY KEY) ENGINE=InnoDB;
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CREATE TABLE t4(a TINYINT UNSIGNED AUTO_INCREMENT PRIMARY KEY) ENGINE=InnoDB;
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CREATE TABLE t5(a TINYINT UNSIGNED AUTO_INCREMENT PRIMARY KEY) ENGINE=InnoDB;
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CREATE TABLE t6(a SERIAL, b INT) ENGINE=InnoDB;
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CREATE FUNCTION p1() RETURNS INT
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BEGIN
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INSERT INTO t1() VALUES();
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INSERT INTO t2() VALUES();
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INSERT INTO t3() VALUES();
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INSERT INTO t4() VALUES();
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INSERT INTO t5() VALUES();
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RETURN 1;
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END$$
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INSERT INTO t6(b) SELECT p1();
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UPDATE t1,t2,t3,t4,t5 SET t1.a=2,t2.a=2,t3.a=2,t4.a=2,t5.a=2;
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SELECT * FROM t1;
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a
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2
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connect con1,localhost,root,,;
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connect con2,localhost,root,,;
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connect con3,localhost,root,,;
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connection con1;
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INSERT INTO t6(b) SELECT SLEEP(p1());
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connection con2;
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INSERT INTO t6(b) SELECT SLEEP(p1());
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connection con3;
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UPDATE t1,t2,t3,t4,t5 SET t1.a=0,t2.a=0,t3.a=0,t4.a=0,t5.a=0
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WHERE t1.a=2 AND t2.a=2 AND t3.a=2 AND t4.a=2 AND t5.a=2;
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connection default;
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KILL QUERY $ID1;
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KILL QUERY $ID2;
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KILL QUERY $ID3;
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connection con1;
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disconnect con1;
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connection con2;
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disconnect con2;
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connection con3;
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disconnect con3;
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connection default;
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DROP FUNCTION p1;
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DROP TABLE t1,t2,t3,t4,t5,t6;
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