From b58c0411bad414a5dbde8b38f615867c68adf55c Mon Sep 17 00:00:00 2001
From: "Vadim B. Mikheev" <vadim4o@yahoo.com>
Date: Fri, 20 Oct 2000 11:01:21 +0000
Subject: redo/undo support functions and cleanups.

---
 src/include/storage/bufmgr.h | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

(limited to 'src/include/storage/bufmgr.h')

diff --git a/src/include/storage/bufmgr.h b/src/include/storage/bufmgr.h
index 1a06953f513..551f98e75f9 100644
--- a/src/include/storage/bufmgr.h
+++ b/src/include/storage/bufmgr.h
@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2000, PostgreSQL, Inc
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: bufmgr.h,v 1.40 2000/08/07 20:15:50 tgl Exp $
+ * $Id: bufmgr.h,v 1.41 2000/10/20 11:01:21 vadim Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -44,6 +44,17 @@ extern int	ShowPinTrace;
 #define BUFFER_LOCK_SHARE		1
 #define BUFFER_LOCK_EXCLUSIVE	2
 
+#define UnlockAndReleaseBuffer(buffer)	\
+( \
+	LockBuffer(buffer, BUFFER_LOCK_UNLOCK), \
+	ReleaseBuffer(buffer) \
+)
+
+#define UnlockAndWriteBuffer(buffer)	\
+( \
+	LockBuffer(buffer, BUFFER_LOCK_UNLOCK), \
+	WriteBuffer(buffer) \
+)
 
 /*
  * BufferIsValid
@@ -163,4 +174,7 @@ extern void UnlockBuffers(void);
 extern void LockBuffer(Buffer buffer, int mode);
 extern void AbortBufferIO(void);
 
+extern bool BufferIsUpdatable(Buffer buffer);
+extern void MarkBufferForCleanup(Buffer buffer, void (*CleanupFunc)(Buffer));
+
 #endif
-- 
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