chore: import upstream snapshot with attribution

2026-07-13 12:32:25 +08:00
commit e014feafe1
2285 changed files with 1131979 additions and 0 deletions
@@ -0,0 +1,146 @@
+--
+-- ADVISORY LOCKS
+--
+
+BEGIN;
+
+SELECT
+	pg_advisory_xact_lock(1), pg_advisory_xact_lock_shared(2),
+	pg_advisory_xact_lock(1, 1), pg_advisory_xact_lock_shared(2, 2);
+
+SELECT locktype, classid, objid, objsubid, mode, granted
+	FROM pg_locks WHERE locktype = 'advisory'
+	ORDER BY classid, objid, objsubid;
+
+
+-- pg_advisory_unlock_all() shouldn't release xact locks
+SELECT pg_advisory_unlock_all();
+
+SELECT count(*) FROM pg_locks WHERE locktype = 'advisory';
+
+
+-- can't unlock xact locks
+SELECT
+	pg_advisory_unlock(1), pg_advisory_unlock_shared(2),
+	pg_advisory_unlock(1, 1), pg_advisory_unlock_shared(2, 2);
+
+
+-- automatically release xact locks at commit
+COMMIT;
+
+SELECT count(*) FROM pg_locks WHERE locktype = 'advisory';
+
+
+BEGIN;
+
+-- holding both session and xact locks on the same objects, xact first
+SELECT
+	pg_advisory_xact_lock(1), pg_advisory_xact_lock_shared(2),
+	pg_advisory_xact_lock(1, 1), pg_advisory_xact_lock_shared(2, 2);
+
+SELECT locktype, classid, objid, objsubid, mode, granted
+	FROM pg_locks WHERE locktype = 'advisory'
+	ORDER BY classid, objid, objsubid;
+
+SELECT
+	pg_advisory_lock(1), pg_advisory_lock_shared(2),
+	pg_advisory_lock(1, 1), pg_advisory_lock_shared(2, 2);
+
+ROLLBACK;
+
+SELECT locktype, classid, objid, objsubid, mode, granted
+	FROM pg_locks WHERE locktype = 'advisory'
+	ORDER BY classid, objid, objsubid;
+
+
+-- unlocking session locks
+SELECT
+	pg_advisory_unlock(1), pg_advisory_unlock(1),
+	pg_advisory_unlock_shared(2), pg_advisory_unlock_shared(2),
+	pg_advisory_unlock(1, 1), pg_advisory_unlock(1, 1),
+	pg_advisory_unlock_shared(2, 2), pg_advisory_unlock_shared(2, 2);
+
+SELECT count(*) FROM pg_locks WHERE locktype = 'advisory';
+
+
+BEGIN;
+
+-- holding both session and xact locks on the same objects, session first
+SELECT
+	pg_advisory_lock(1), pg_advisory_lock_shared(2),
+	pg_advisory_lock(1, 1), pg_advisory_lock_shared(2, 2);
+
+SELECT locktype, classid, objid, objsubid, mode, granted
+	FROM pg_locks WHERE locktype = 'advisory'
+	ORDER BY classid, objid, objsubid;
+
+SELECT
+	pg_advisory_xact_lock(1), pg_advisory_xact_lock_shared(2),
+	pg_advisory_xact_lock(1, 1), pg_advisory_xact_lock_shared(2, 2);
+
+ROLLBACK;
+
+SELECT locktype, classid, objid, objsubid, mode, granted
+	FROM pg_locks WHERE locktype = 'advisory'
+	ORDER BY classid, objid, objsubid;
+
+
+-- releasing all session locks
+SELECT pg_advisory_unlock_all();
+
+SELECT count(*) FROM pg_locks WHERE locktype = 'advisory';
+
+
+BEGIN;
+
+-- grabbing txn locks multiple times
+
+SELECT
+	pg_advisory_xact_lock(1), pg_advisory_xact_lock(1),
+	pg_advisory_xact_lock_shared(2), pg_advisory_xact_lock_shared(2),
+	pg_advisory_xact_lock(1, 1), pg_advisory_xact_lock(1, 1),
+	pg_advisory_xact_lock_shared(2, 2), pg_advisory_xact_lock_shared(2, 2);
+
+SELECT locktype, classid, objid, objsubid, mode, granted
+	FROM pg_locks WHERE locktype = 'advisory'
+	ORDER BY classid, objid, objsubid;
+
+COMMIT;
+
+SELECT count(*) FROM pg_locks WHERE locktype = 'advisory';
+
+-- grabbing session locks multiple times
+
+SELECT
+	pg_advisory_lock(1), pg_advisory_lock(1),
+	pg_advisory_lock_shared(2), pg_advisory_lock_shared(2),
+	pg_advisory_lock(1, 1), pg_advisory_lock(1, 1),
+	pg_advisory_lock_shared(2, 2), pg_advisory_lock_shared(2, 2);
+
+SELECT locktype, classid, objid, objsubid, mode, granted
+	FROM pg_locks WHERE locktype = 'advisory'
+	ORDER BY classid, objid, objsubid;
+
+SELECT
+	pg_advisory_unlock(1), pg_advisory_unlock(1),
+	pg_advisory_unlock_shared(2), pg_advisory_unlock_shared(2),
+	pg_advisory_unlock(1, 1), pg_advisory_unlock(1, 1),
+	pg_advisory_unlock_shared(2, 2), pg_advisory_unlock_shared(2, 2);
+
+SELECT count(*) FROM pg_locks WHERE locktype = 'advisory';
+
+-- .. and releasing them all at once
+
+SELECT
+	pg_advisory_lock(1), pg_advisory_lock(1),
+	pg_advisory_lock_shared(2), pg_advisory_lock_shared(2),
+	pg_advisory_lock(1, 1), pg_advisory_lock(1, 1),
+	pg_advisory_lock_shared(2, 2), pg_advisory_lock_shared(2, 2);
+
+SELECT locktype, classid, objid, objsubid, mode, granted
+	FROM pg_locks WHERE locktype = 'advisory'
+	ORDER BY classid, objid, objsubid;
+
+SELECT pg_advisory_unlock_all();
+
+SELECT count(*) FROM pg_locks WHERE locktype = 'advisory';