55 lines
1.6 KiB
Python
55 lines
1.6 KiB
Python
# CREATE TRIGGER - Add trigger with concurrent reads
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#
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# CREATE TRIGGER uses ShareRowExclusiveLock so we mix writes with it
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# to see what works or waits.
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setup
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{
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CREATE TABLE a (i int);
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CREATE FUNCTION f() RETURNS TRIGGER LANGUAGE plpgsql AS 'BEGIN RETURN NULL; END;';
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INSERT INTO a VALUES (0), (1), (2), (3);
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}
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teardown
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{
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DROP TABLE a;
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DROP FUNCTION f();
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}
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session s1
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step s1a { BEGIN; }
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step s1b { CREATE TRIGGER t AFTER UPDATE ON a EXECUTE PROCEDURE f(); }
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step s1c { COMMIT; }
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session s2
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step s2a { BEGIN; }
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step s2b { SELECT * FROM a WHERE i = 1 FOR UPDATE; }
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step s2c { UPDATE a SET i = 4 WHERE i = 3; }
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step s2d { COMMIT; }
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permutation s1a s1b s1c s2a s2b s2c s2d
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permutation s1a s1b s2a s1c s2b s2c s2d
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permutation s1a s1b s2a s2b s1c s2c s2d
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permutation s1a s1b s2a s2b s2c s1c s2d
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permutation s1a s2a s1b s1c s2b s2c s2d
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permutation s1a s2a s1b s2b s1c s2c s2d
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permutation s1a s2a s1b s2b s2c s1c s2d
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permutation s1a s2a s2b s1b s1c s2c s2d
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permutation s1a s2a s2b s1b s2c s1c s2d
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permutation s1a s2a s2b s2c s1b s2d s1c
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permutation s1a s2a s2b s2c s2d s1b s1c
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permutation s2a s1a s1b s1c s2b s2c s2d
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permutation s2a s1a s1b s2b s1c s2c s2d
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permutation s2a s1a s1b s2b s2c s1c s2d
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permutation s2a s1a s2b s1b s1c s2c s2d
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permutation s2a s1a s2b s1b s2c s1c s2d
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permutation s2a s1a s2b s2c s1b s2d s1c
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permutation s2a s1a s2b s2c s2d s1b s1c
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permutation s2a s2b s1a s1b s1c s2c s2d
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permutation s2a s2b s1a s1b s2c s1c s2d
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permutation s2a s2b s1a s2c s1b s2d s1c
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permutation s2a s2b s1a s2c s2d s1b s1c
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permutation s2a s2b s2c s1a s1b s2d s1c
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permutation s2a s2b s2c s1a s2d s1b s1c
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permutation s2a s2b s2c s2d s1a s1b s1c
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