From fdf6be80f993d2908f794c0a33aedff479a92813 Mon Sep 17 00:00:00 2001
From: "Vadim B. Mikheev" <vadim4o@yahoo.com>
Date: Sun, 28 Mar 1999 20:32:42 +0000
Subject: 1. Vacuum is updated for MVCC. 2. Much faster btree tuples deletion
 in the case when first on page    index tuple is deleted (no movement to the
 left page(s)). 3. Remember blkno of new root page in BTPageOpaque of   
 left/right siblings when root page is splitted.

---
 src/backend/storage/buffer/bufmgr.c | 29 ++++++++++++++---------------
 1 file changed, 14 insertions(+), 15 deletions(-)

(limited to 'src/backend/storage/buffer/bufmgr.c')

diff --git a/src/backend/storage/buffer/bufmgr.c b/src/backend/storage/buffer/bufmgr.c
index 8d0a299e72c..04c1f4813d2 100644
--- a/src/backend/storage/buffer/bufmgr.c
+++ b/src/backend/storage/buffer/bufmgr.c
@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/storage/buffer/bufmgr.c,v 1.49 1999/02/21 03:49:21 scrappy Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/storage/buffer/bufmgr.c,v 1.50 1999/03/28 20:32:17 vadim Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -95,7 +95,7 @@ static BufferDesc *BufferAlloc(Relation reln, BlockNumber blockNum,
 static int	FlushBuffer(Buffer buffer, bool release);
 static void BufferSync(void);
 static int	BufferReplace(BufferDesc *bufHdr, bool bufferLockHeld);
-static void PrintBufferDescs(void);
+void PrintBufferDescs(void);
 
 /* not static but used by vacuum only ... */
 int			BlowawayRelationBuffers(Relation rel, BlockNumber block);
@@ -1208,23 +1208,24 @@ int
 BufferPoolCheckLeak()
 {
 	int			i;
-	int			error = 0;
+	int			result = 0;
 
 	for (i = 1; i <= NBuffers; i++)
 	{
 		if (BufferIsValid(i))
 		{
+			BufferDesc *buf = &(BufferDescriptors[i - 1]);
+
 			elog(NOTICE,
-			"buffer leak [%d] detected in BufferPoolCheckLeak()", i - 1);
-			error = 1;
+			"Buffer Leak: [%03d] (freeNext=%d, freePrev=%d, \
+relname=%s, blockNum=%d, flags=0x%x, refcount=%d %d)",
+				 i - 1, buf->freeNext, buf->freePrev,
+				 buf->sb_relname, buf->tag.blockNum, buf->flags,
+				 buf->refcount, PrivateRefCount[i - 1]);
+			result = 1;
 		}
 	}
-	if (error)
-	{
-		PrintBufferDescs();
-		return 1;
-	}
-	return 0;
+	return (result);
 }
 
 /* ------------------------------------------------
@@ -1465,7 +1466,7 @@ DropBuffers(Oid dbid)
  *		use only.
  * -----------------------------------------------------------------
  */
-static void
+void
 PrintBufferDescs()
 {
 	int			i;
@@ -1474,16 +1475,14 @@ PrintBufferDescs()
 	if (IsUnderPostmaster)
 	{
 		SpinAcquire(BufMgrLock);
-#ifdef NOT_USED
 		for (i = 0; i < NBuffers; ++i, ++buf)
 		{
-			elog(NOTICE, "[%02d] (freeNext=%d, freePrev=%d, relname=%s, \
+			elog(DEBUG, "[%02d] (freeNext=%d, freePrev=%d, relname=%s, \
 blockNum=%d, flags=0x%x, refcount=%d %d)",
 				 i, buf->freeNext, buf->freePrev,
 				 buf->sb_relname, buf->tag.blockNum, buf->flags,
 				 buf->refcount, PrivateRefCount[i]);
 		}
-#endif
 		SpinRelease(BufMgrLock);
 	}
 	else
-- 
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