35 lines
858 B
Plaintext
35 lines
858 B
Plaintext
CREATE TABLE t1 (c1 INT NOT NULL PRIMARY KEY, c2 INT NOT NULL, c3 INT NOT NULL) ENGINE=InnoDB;
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INSERT INTO t1 VALUES (0, 0, 0);
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# On connection 1
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START TRANSACTION READ ONLY;
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SELECT c1, c2 FROM t1 WHERE c1=0 LOCK IN SHARE MODE;
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c1 c2
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0 0
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# On connection 2
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START TRANSACTION;
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UPDATE t1 SET c1=2 WHERE c1=0 AND c2=0;
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# On connection 3
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include/start_transaction_high_prio.inc
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START TRANSACTION /* HIGH PRIORITY */;
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SET @con2_id = <con2_id>;
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SET DEBUG_SYNC='rec_lock_add_to_waitq SIGNAL signal1 WAIT_FOR waiting1';
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UPDATE t1 SET c1=3 WHERE c1=0;;
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# On connection 1
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SET DEBUG_SYNC='now WAIT_FOR signal1';
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SET DEBUG_SYNC='now SIGNAL waiting1';
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COMMIT;
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# On connection 3
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COMMIT;
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# On connection 2
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COMMIT;
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include/assert.inc ['There is a 3.0.0 in t1']
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include/assert.inc ['There is no 0.0.0 in t1']
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include/assert.inc ['There is no 2 in t1.c1']
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DROP TABLE t1;
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