diff options
Diffstat (limited to 'src/include/storage/lmgr.h')
| -rw-r--r-- | src/include/storage/lmgr.h | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/src/include/storage/lmgr.h b/src/include/storage/lmgr.h index f859dc0762f..6f7a16311fd 100644 --- a/src/include/storage/lmgr.h +++ b/src/include/storage/lmgr.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2000, PostgreSQL, Inc * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: lmgr.h,v 1.26 2000/11/28 23:27:57 tgl Exp $ + * $Id: lmgr.h,v 1.27 2000/12/22 00:51:54 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -33,17 +33,21 @@ extern LOCKMETHOD LockTableId; -extern LOCKMETHOD InitLockTable(void); +extern LOCKMETHOD InitLockTable(int maxBackends); extern void RelationInitLockInfo(Relation relation); +/* Lock a relation */ extern void LockRelation(Relation relation, LOCKMODE lockmode); extern void UnlockRelation(Relation relation, LOCKMODE lockmode); -/* this is for indices */ +extern void LockRelationForSession(LockRelId *relid, LOCKMODE lockmode); +extern void UnlockRelationForSession(LockRelId *relid, LOCKMODE lockmode); + +/* Lock a page (mainly used for indices) */ extern void LockPage(Relation relation, BlockNumber blkno, LOCKMODE lockmode); extern void UnlockPage(Relation relation, BlockNumber blkno, LOCKMODE lockmode); -/* and this is for transactions */ +/* Lock an XID (used to wait for a transaction to finish) */ extern void XactLockTableInsert(TransactionId xid); extern void XactLockTableWait(TransactionId xid); |