From 0007490e0964d194a606ba79bb11ae1642da3372 Mon Sep 17 00:00:00 2001
From: Tom Lane
Date: Sat, 20 Aug 2005 23:26:37 +0000
Subject: Convert the arithmetic for shared memory size calculation from 'int'
 to 'Size' (that is, size_t), and install overflow detection checks in it.
 This allows us to remove the former arbitrary restrictions on NBuffers etc. 
 It won't make any difference in a 32-bit machine, but in a 64-bit machine you
 could theoretically have terabytes of shared buffers. (How efficiently we
 could manage 'em remains to be seen.)  Similarly, num_temp_buffers, work_mem,
 and maintenance_work_mem can be set above 2Gb on a 64-bit machine.  Original
 patch from Koichi Suzuki, additional work by moi.

---
 src/include/access/clog.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'src/include/access/clog.h')

diff --git a/src/include/access/clog.h b/src/include/access/clog.h
index d03c5904f21..f04eb02a58d 100644
--- a/src/include/access/clog.h
+++ b/src/include/access/clog.h
@@ -6,7 +6,7 @@
  * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/access/clog.h,v 1.13 2005/06/06 17:01:24 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/access/clog.h,v 1.14 2005/08/20 23:26:29 tgl Exp $
  */
 #ifndef CLOG_H
 #define CLOG_H
@@ -31,7 +31,7 @@ typedef int XidStatus;
 extern void TransactionIdSetStatus(TransactionId xid, XidStatus status);
 extern XidStatus TransactionIdGetStatus(TransactionId xid);
 
-extern int	CLOGShmemSize(void);
+extern Size CLOGShmemSize(void);
 extern void CLOGShmemInit(void);
 extern void BootStrapCLOG(void);
 extern void StartupCLOG(void);
-- 
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