diff options
Diffstat (limited to 'src/backend/storage/lmgr/lmgr.c')
| -rw-r--r-- | src/backend/storage/lmgr/lmgr.c | 41 |
1 files changed, 40 insertions, 1 deletions
diff --git a/src/backend/storage/lmgr/lmgr.c b/src/backend/storage/lmgr/lmgr.c index 67bb2ba9fb2..c6ee192304a 100644 --- a/src/backend/storage/lmgr/lmgr.c +++ b/src/backend/storage/lmgr/lmgr.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/storage/lmgr/lmgr.c,v 1.97 2008/03/04 19:54:06 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/storage/lmgr/lmgr.c,v 1.98 2008/11/07 18:25:06 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -660,6 +660,45 @@ UnlockSharedObject(Oid classid, Oid objid, uint16 objsubid, LockRelease(&tag, lockmode, false); } +/* + * LockSharedObjectForSession + * + * Obtain a session-level lock on a shared-across-databases object. + * See LockRelationIdForSession for notes about session-level locks. + */ +void +LockSharedObjectForSession(Oid classid, Oid objid, uint16 objsubid, + LOCKMODE lockmode) +{ + LOCKTAG tag; + + SET_LOCKTAG_OBJECT(tag, + InvalidOid, + classid, + objid, + objsubid); + + (void) LockAcquire(&tag, lockmode, true, false); +} + +/* + * UnlockSharedObjectForSession + */ +void +UnlockSharedObjectForSession(Oid classid, Oid objid, uint16 objsubid, + LOCKMODE lockmode) +{ + LOCKTAG tag; + + SET_LOCKTAG_OBJECT(tag, + InvalidOid, + classid, + objid, + objsubid); + + LockRelease(&tag, lockmode, true); +} + /* * Append a description of a lockable object to buf. |