diff options
Diffstat (limited to 'src/include/storage/lmgr.h')
| -rw-r--r-- | src/include/storage/lmgr.h | 64 |
1 files changed, 24 insertions, 40 deletions
diff --git a/src/include/storage/lmgr.h b/src/include/storage/lmgr.h index 4082811bcc8..a85ba1e8ff7 100644 --- a/src/include/storage/lmgr.h +++ b/src/include/storage/lmgr.h @@ -6,7 +6,7 @@ * * Copyright (c) 1994, Regents of the University of California * - * $Id: lmgr.h,v 1.15 1998/09/01 04:38:23 momjian Exp $ + * $Id: lmgr.h,v 1.16 1998/12/15 12:46:57 vadim Exp $ * *------------------------------------------------------------------------- */ @@ -17,64 +17,48 @@ #include <utils/rel.h> #include <catalog/catname.h> -/* - * This was moved from pladt.h for the new lock manager. Want to obsolete - * all of the old code. - */ +#define AccessShareLock 1 /* SELECT */ +#define RowShareLock 2 /* SELECT FOR UPDATE */ +#define RowExclusiveLock 3 /* INSERT, UPDATE, DELETE */ +#define ShareLock 4 +#define ShareRowExclusiveLock 5 +#define ExclusiveLock 6 +#define AccessExclusiveLock 7 + +#define ExtendLock 8 + +extern LOCKMETHOD LockTableId; + + typedef struct LockRelId { Oid relId; /* a relation identifier */ Oid dbId; /* a database identifier */ } LockRelId; -#ifdef LowLevelLocking typedef struct LockInfoData { LockRelId lockRelId; - bool lockHeld[MAX_LOCKMODES]; /* on table level */ } LockInfoData; -#else -typedef struct LockInfoData -{ - LockRelId lockRelId; -} LockInfoData; - -#endif - typedef LockInfoData *LockInfo; #define LockInfoIsValid(lockinfo) PointerIsValid(lockinfo) +extern LOCKMETHOD InitLockTable(void); extern void RelationInitLockInfo(Relation relation); -extern void RelationSetLockForDescriptorOpen(Relation relation); -extern void RelationSetLockForRead(Relation relation); -extern void RelationUnsetLockForRead(Relation relation); -extern void RelationSetLockForWrite(Relation relation); -extern void RelationUnsetLockForWrite(Relation relation); -/* used in vaccum.c */ -extern void RelationSetLockForWritePage(Relation relation, - ItemPointer itemPointer); +extern void LockRelation(Relation relation, LOCKMODE lockmode); +extern void UnlockRelation(Relation relation, LOCKMODE lockmode); -/* used in nbtpage.c, hashpage.c */ -extern void RelationSetSingleWLockPage(Relation relation, - ItemPointer itemPointer); -extern void RelationUnsetSingleWLockPage(Relation relation, - ItemPointer itemPointer); -extern void RelationSetSingleRLockPage(Relation relation, - ItemPointer itemPointer); -extern void RelationUnsetSingleRLockPage(Relation relation, - ItemPointer itemPointer); -extern void RelationSetRIntentLock(Relation relation); -extern void RelationUnsetRIntentLock(Relation relation); -extern void RelationSetWIntentLock(Relation relation); -extern void RelationUnsetWIntentLock(Relation relation); +/* this is for indices */ +extern void LockPage(Relation relation, BlockNumber blkno, LOCKMODE lockmode); +extern void UnlockPage(Relation relation, BlockNumber blkno, LOCKMODE lockmode); -/* single.c */ -extern bool SingleLockReln(LockInfo lockinfo, LOCKMODE lockmode, int action); -extern bool SingleLockPage(LockInfo lockinfo, ItemPointer tidPtr, - LOCKMODE lockmode, int action); +/* and this is for transactions */ +extern void XactLockTableInsert(TransactionId xid); +extern void XactLockTableDelete(TransactionId xid); +extern void XactLockTableWait(TransactionId xid); /* proc.c */ extern void InitProcGlobal(IPCKey key); |