diff options
Diffstat (limited to 'src/test/regress/sql/advisory_lock.sql')
| -rw-r--r-- | src/test/regress/sql/advisory_lock.sql | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/src/test/regress/sql/advisory_lock.sql b/src/test/regress/sql/advisory_lock.sql new file mode 100644 index 0000000..57c47c0 --- /dev/null +++ b/src/test/regress/sql/advisory_lock.sql @@ -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'; |