From 7326e78c4249393359edce09f555aaa049be2a80 Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Thu, 23 Aug 2001 23:06:38 +0000
Subject: Ensure that all TransactionId comparisons are encapsulated in macros
 (TransactionIdPrecedes, TransactionIdFollows, etc).  First step on the way to
 transaction ID wrap solution ...

---
 src/include/postgres.h | 30 +++++++++++++++++++++++++++++-
 1 file changed, 29 insertions(+), 1 deletion(-)

(limited to 'src/include/postgres.h')

diff --git a/src/include/postgres.h b/src/include/postgres.h
index 1502c84a4c6..c40db19dab2 100644
--- a/src/include/postgres.h
+++ b/src/include/postgres.h
@@ -10,7 +10,7 @@
  * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
  * Portions Copyright (c) 1995, Regents of the University of California
  *
- * $Id: postgres.h,v 1.50 2001/08/10 18:57:41 tgl Exp $
+ * $Id: postgres.h,v 1.51 2001/08/23 23:06:38 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -261,6 +261,34 @@ typedef Datum *DatumPtr;
 
 #define ObjectIdGetDatum(X) ((Datum) SET_4_BYTES(X))
 
+/*
+ * DatumGetTransactionId
+ *		Returns transaction identifier value of a datum.
+ */
+
+#define DatumGetTransactionId(X) ((TransactionId) GET_4_BYTES(X))
+
+/*
+ * TransactionIdGetDatum
+ *		Returns datum representation for a transaction identifier.
+ */
+
+#define TransactionIdGetDatum(X) ((Datum) SET_4_BYTES((X)))
+
+/*
+ * DatumGetCommandId
+ *		Returns command identifier value of a datum.
+ */
+
+#define DatumGetCommandId(X) ((CommandId) GET_4_BYTES(X))
+
+/*
+ * CommandIdGetDatum
+ *		Returns datum representation for a command identifier.
+ */
+
+#define CommandIdGetDatum(X) ((Datum) SET_4_BYTES(X))
+
 /*
  * DatumGetPointer
  *		Returns pointer value of a datum.
-- 
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