* -Remove LockMethodTable.prio field, not used (Bruce)

Author: bmomjian

src/backend/storage/lmgr/lmgr.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/storage/lmgr/lmgr.c,v 1.53 2002/06/20 20:29:35 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/storage/lmgr/lmgr.c,v 1.54 2002/08/01 05:18:33 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -65,40 +65,20 @@ static LOCKMASK LockConflicts[] = {
 
 };
 
-static int	LockPrios[] = {
-	0,
-	/* AccessShareLock */
-	1,
-	/* RowShareLock */
-	2,
-	/* RowExclusiveLock */
-	3,
-	/* ShareUpdateExclusiveLock */
-	4,
-	/* ShareLock */
-	5,
-	/* ShareRowExclusiveLock */
-	6,
-	/* ExclusiveLock */
-	7,
-	/* AccessExclusiveLock */
-	8
-};
-
 LOCKMETHOD	LockTableId = (LOCKMETHOD) NULL;
 LOCKMETHOD	LongTermTableId = (LOCKMETHOD) NULL;
 
 /*
- * Create the lock table described by LockConflicts and LockPrios.
+ * Create the lock table described by LockConflicts
  */
 LOCKMETHOD
 InitLockTable(int maxBackends)
 {
 	int			lockmethod;
 
 	lockmethod = LockMethodTableInit("LockTable",
-									 LockConflicts, LockPrios,
-									 MAX_LOCKMODES - 1, maxBackends);
+									 LockConflicts, MAX_LOCKMODES - 1,
+									 maxBackends);
 	LockTableId = lockmethod;
 
 	if (!(LockTableId))

src/backend/storage/lmgr/lock.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/storage/lmgr/lock.c,v 1.110 2002/07/19 00:17:40 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/storage/lmgr/lock.c,v 1.111 2002/08/01 05:18:33 momjian Exp $
  *
  * NOTES
  *	  Outside modules can create a lock table and acquire/release
@@ -208,18 +208,14 @@ GetLocksMethodTable(LOCK *lock)
 static void
 LockMethodInit(LOCKMETHODTABLE *lockMethodTable,
 			   LOCKMASK *conflictsP,
-			   int *prioP,
 			   int numModes)
 {
 	int			i;
 
 	lockMethodTable->numLockModes = numModes;
 	numModes++;
-	for (i = 0; i < numModes; i++, prioP++, conflictsP++)
-	{
+	for (i = 0; i < numModes; i++, conflictsP++)
 		lockMethodTable->conflictTab[i] = *conflictsP;
-		lockMethodTable->prio[i] = *prioP;
-	}
 }
 
 /*
@@ -234,7 +230,6 @@ LockMethodInit(LOCKMETHODTABLE *lockMethodTable,
 LOCKMETHOD
 LockMethodTableInit(char *tabName,
 					LOCKMASK *conflictsP,
-					int *prioP,
 					int numModes,
 					int maxBackends)
 {
@@ -335,7 +330,7 @@ LockMethodTableInit(char *tabName,
 		elog(FATAL, "LockMethodTableInit: couldn't initialize %s", tabName);
 
 	/* init data structures */
-	LockMethodInit(lockMethodTable, conflictsP, prioP, numModes);
+	LockMethodInit(lockMethodTable, conflictsP, numModes);
 
 	LWLockRelease(LockMgrLock);
 

src/include/storage/lock.h

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: lock.h,v 1.63 2002/07/19 00:17:40 momjian Exp $
+ * $Id: lock.h,v 1.64 2002/08/01 05:18:34 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -80,10 +80,6 @@ typedef int LOCKMETHOD;
  *		type conflicts. conflictTab[i] is a mask with the j-th bit
  *		turned on if lock types i and j conflict.
  *
- * prio -- each lockmode has a priority, so, for example, waiting
- *		writers can be given priority over readers (to avoid
- *		starvation).  XXX this field is not actually used at present!
- *
  * masterLock -- synchronizes access to the table
  *
  */
@@ -94,7 +90,6 @@ typedef struct LOCKMETHODTABLE
 	LOCKMETHOD	lockmethod;
 	int			numLockModes;
 	int			conflictTab[MAX_LOCKMODES];
-	int			prio[MAX_LOCKMODES];
 	LWLockId	masterLock;
 } LOCKMETHODTABLE;
 
@@ -215,7 +210,7 @@ typedef struct PROCLOCK
 extern void InitLocks(void);
 extern LOCKMETHODTABLE *GetLocksMethodTable(LOCK *lock);
 extern LOCKMETHOD LockMethodTableInit(char *tabName, LOCKMASK *conflictsP,
-					int *prioP, int numModes, int maxBackends);
+					int numModes, int maxBackends);
 extern LOCKMETHOD LockMethodTableRename(LOCKMETHOD lockmethod);
 extern bool LockAcquire(LOCKMETHOD lockmethod, LOCKTAG *locktag,
 			TransactionId xid, LOCKMODE lockmode, bool dontWait);