heap' logging

4 files changed, 21 insertions, 9 deletions

diff --git a/src/include/access/hio.h b/src/include/access/hio.h
index 999d2412e76..c0636a4ff34 100644
--- a/src/include/access/hio.h
+++ b/src/include/access/hio.h
@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2000, PostgreSQL, Inc
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: hio.h,v 1.14 2000/01/26 05:57:50 momjian Exp $
+ * $Id: hio.h,v 1.15 2000/07/03 02:54:17 vadim Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -18,6 +18,6 @@
 
 extern void RelationPutHeapTuple(Relation relation, Buffer buffer,
 					 HeapTuple tuple);
-extern void RelationPutHeapTupleAtEnd(Relation relation, HeapTuple tuple);
+extern Buffer RelationGetBufferForTuple(Relation relation, Size len, Buffer Ubuf);
 
 #endif	 /* HIO_H */
diff --git a/src/include/access/htup.h b/src/include/access/htup.h
index 3370960e2fd..4665fe60bb7 100644
--- a/src/include/access/htup.h
+++ b/src/include/access/htup.h
@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2000, PostgreSQL, Inc
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: htup.h,v 1.31 2000/07/02 22:01:00 momjian Exp $
+ * $Id: htup.h,v 1.32 2000/07/03 02:54:17 vadim Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -69,22 +69,25 @@ typedef HeapTupleHeaderData *HeapTupleHeader;
 #define	XLOG_HEAP_MOVE		0x30
 
 /*
- * All what we need to find changed tuple (14 bytes)
+ * All what we need to find changed tuple (18 bytes)
  */
 typedef struct xl_heaptid
 {
 	Oid					dbId;		/* database */
 	Oid					relId;		/* relation */
+	CommandId			cid;		/* this is for "better" tuple' */
+									/* identification - it allows to avoid */
+									/* "compensation" records for undo */
 	ItemPointerData		tid;		/* changed tuple id */
 } xl_heaptid;
 
-/* This is what we need to know about delete - ALIGN(14) = 16 bytes */
+/* This is what we need to know about delete - ALIGN(18) = 24 bytes */
 typedef struct xl_heap_delete
 {
 	xl_heaptid			dtid;		/* deleted tuple id */
 } xl_heap_delete;
 
-/* This is what we need to know about insert - 22 + data */
+/* This is what we need to know about insert - 26 + data */
 typedef struct xl_heap_insert
 {
 	xl_heaptid			itid;		/* inserted tuple id */
@@ -108,7 +111,7 @@ typedef struct xl_heap_update
 	/* NEW TUPLE DATA FOLLOWS AT END OF STRUCT */
 } xl_heap_update;
 
-/* This is what we need to know about tuple move - ALIGN(20) = 24 bytes */
+/* This is what we need to know about tuple move - 24 bytes */
 typedef struct xl_heap_move
 {
 	xl_heaptid			ftid;		/* moved from */
diff --git a/src/include/access/xlog.h b/src/include/access/xlog.h
index b5fda0b58ad..b86339f072f 100644
--- a/src/include/access/xlog.h
+++ b/src/include/access/xlog.h
@@ -68,6 +68,13 @@ typedef XLogPageHeaderData *XLogPageHeader;
 
 #define XLP_FIRST_IS_SUBRECORD	0x0001
 
+/*
+ * StartUpID (SUI) - system startups counter.
+ * It's to allow removing pg_log after shutdown.
+ */
+typedef	uint32		StartUpID;
+extern	StartUpID	ThisStartUpID;
+
 extern XLogRecPtr XLogInsert(RmgrId rmid, uint8 info, 
 			char *hdr, uint32 hdrlen,
 			char *buf, uint32 buflen);
diff --git a/src/include/storage/bufpage.h b/src/include/storage/bufpage.h
index 15d1106f26c..30b5a93ad64 100644
--- a/src/include/storage/bufpage.h
+++ b/src/include/storage/bufpage.h
@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2000, PostgreSQL, Inc
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: bufpage.h,v 1.29 2000/06/02 10:20:27 vadim Exp $
+ * $Id: bufpage.h,v 1.30 2000/07/03 02:54:21 vadim Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -118,8 +118,10 @@ typedef OpaqueData *Opaque;
 typedef struct PageHeaderData
 {
 #ifdef XLOG
-	XLogRecPtr	pd_lsn;			/* XLOG: next byte after last byte of xlog */
+	XLogRecPtr	pd_lsn;			/* LSN: next byte after last byte of xlog */
 								/* record for last change of this page */
+	StartUpID	pd_sui;			/* SUI of last changes (currently it's */
+								/* used by heap AM only) */
 #endif
 	LocationIndex pd_lower;		/* offset to start of free space */
 	LocationIndex pd_upper;		/* offset to end of free space */