WAL

src/include/access/transam.h

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2000, PostgreSQL, Inc
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: transam.h,v 1.24 2000/01/26 05:57:51 momjian Exp $
+ * $Id: transam.h,v 1.25 2000/10/28 16:20:59 vadim Exp $
  *
  *	 NOTES
  *		Transaction System Version 101 now support proper oid
@@ -67,7 +67,11 @@ typedef unsigned char XidStatus;/* (2 bits) */
  *		transaction page definitions
  * ----------------
  */
+#ifdef XLOG
+#define TP_DataSize				(BLCKSZ - sizeof(XLogRecPtr))
+#else
 #define TP_DataSize				BLCKSZ
+#endif
 #define TP_NumXidStatusPerBlock (TP_DataSize * 4)
 
 /* ----------------
@@ -84,6 +88,10 @@ typedef unsigned char XidStatus;/* (2 bits) */
  */
 typedef struct LogRelationContentsData
 {
+#ifdef XLOG
+	XLogRecPtr	LSN;		/* temp hack: LSN is member of any block */
+							/* so should be described in bufmgr */
+#endif
 	int			TransSystemVersion;
 } LogRelationContentsData;
 
@@ -107,6 +115,9 @@ typedef LogRelationContentsData *LogRelationContents;
  */
 typedef struct VariableRelationContentsData
 {
+#ifdef XLOG
+	XLogRecPtr	LSN;
+#endif
 	int			TransSystemVersion;
 	TransactionId nextXidData;
 	TransactionId lastXidData;	/* unused */

src/include/access/xact.h

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2000, PostgreSQL, Inc
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: xact.h,v 1.28 2000/10/20 11:01:14 vadim Exp $
+ * $Id: xact.h,v 1.29 2000/10/28 16:20:59 vadim Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -135,6 +135,8 @@ extern bool IsTransactionBlock(void);
 extern void UserAbortTransactionBlock(void);
 extern void AbortOutOfAnyTransaction(void);
 
+extern void RecordTransactionCommit(void);
+
 extern TransactionId DisabledTransactionId;
 
 extern void XactPushRollback(void (*func) (void *), void* data);

src/include/access/xlog.h

@@ -10,12 +10,7 @@
 
 #include "access/rmgr.h"
 #include "access/transam.h"
-
-typedef struct XLogRecPtr
-{
-	uint32		xlogid;			/* log file #, 0 based */
-	uint32		xrecoff;		/* offset of record in log file */
-} XLogRecPtr;
+#include "access/xlogdefs.h"
 
 typedef struct XLogRecord
 {
@@ -83,12 +78,7 @@ typedef XLogPageHeaderData *XLogPageHeader;
 #define XLByteEQ(left, right)		\
 			(right.xlogid == left.xlogid && right.xrecoff ==  left.xrecoff)
 
-/*
- * StartUpID (SUI) - system startups counter.
- * It's to allow removing pg_log after shutdown.
- */
-typedef	uint32		StartUpID;
-extern	StartUpID	ThisStartUpID;
+extern	StartUpID	ThisStartUpID;	/* current SUI */
 extern	bool		InRecovery;
 extern	XLogRecPtr	MyLastRecPtr;
 

src/include/access/xlogdefs.h

@@ -0,0 +1,24 @@
+/*
+ *
+ * xlogdefs.h
+ *
+ * Postgres transaction log manager record pointer and
+ * system stratup number definitions
+ *
+ */
+#ifndef XLOG_DEFS_H
+#define XLOG_DEFS_H
+
+typedef struct XLogRecPtr
+{
+	uint32		xlogid;			/* log file #, 0 based */
+	uint32		xrecoff;		/* offset of record in log file */
+} XLogRecPtr;
+
+/*
+ * StartUpID (SUI) - system startups counter. It's to allow removing
+ * pg_log after shutdown, in future.
+ */
+typedef	uint32		StartUpID;
+
+#endif	 /* XLOG_DEFS_H */

src/include/access/xlogutils.h

@@ -9,8 +9,10 @@ extern bool XLogIsValidTuple(RelFileNode hnode, ItemPointer iptr);
 
 extern void XLogOpenLogRelation(void);
 
-extern Buffer XLogReadBuffer(bool extend, Relation reln, BlockNumber blkno);
+extern void XLogInitRelationCache(void);
 extern void XLogCloseRelationCache(void);
+
 extern Relation XLogOpenRelation(bool redo, RmgrId rmid, RelFileNode rnode);
+extern Buffer XLogReadBuffer(bool extend, Relation reln, BlockNumber blkno);
 
 #endif

src/include/storage/buf_internals.h

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2000, PostgreSQL, Inc
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: buf_internals.h,v 1.41 2000/10/23 04:10:14 vadim Exp $
+ * $Id: buf_internals.h,v 1.42 2000/10/28 16:21:00 vadim Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -109,6 +109,10 @@ typedef struct sbufdesc
 	bool		ri_lock;		/* read-intent lock */
 	bool		w_lock;			/* context exclusively locked */
 
+#ifdef XLOG
+	bool		cntxDirty;		/* new way to mark block as dirty */
+#endif
+
 	BufferBlindId blind;		/* was used to support blind write */
 
 	/*

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 1.41 2000/10/20 11:01:21 vadim Exp $
+ * $Id: bufmgr.h,v 1.42 2000/10/28 16:21:00 vadim Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -15,7 +15,7 @@
 #define BUFMGR_H
 
 #include "storage/buf_internals.h"
-
+#include "access/xlogdefs.h"
 
 typedef void *Block;
 
@@ -177,4 +177,9 @@ extern void AbortBufferIO(void);
 extern bool BufferIsUpdatable(Buffer buffer);
 extern void MarkBufferForCleanup(Buffer buffer, void (*CleanupFunc)(Buffer));
 
+#ifdef XLOG
+extern void BufmgrCommit(void);
+extern void BufferSync(void);
+#endif
+
 #endif

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 1.34 2000/10/21 15:43:36 vadim Exp $
+ * $Id: bufpage.h,v 1.35 2000/10/28 16:21:00 vadim Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -118,7 +118,8 @@ typedef OpaqueData *Opaque;
  */
 typedef struct PageHeaderData
 {
-#ifdef XLOG
+#ifdef XLOG						/* XXX LSN is member of *any* block, not */
+								/* only page-organized - 'll change later */
 	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 */

src/include/storage/smgr.h

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2000, PostgreSQL, Inc
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: smgr.h,v 1.22 2000/10/16 14:52:28 vadim Exp $
+ * $Id: smgr.h,v 1.23 2000/10/28 16:21:00 vadim Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -36,26 +36,19 @@ extern int smgrwrite(int16 which, Relation reln, BlockNumber blocknum,
 		  char *buffer);
 extern int smgrflush(int16 which, Relation reln, BlockNumber blocknum,
 		  char *buffer);
-#ifdef OLD_FILE_NAMING
-extern int smgrblindwrt(int16 which, char *dbname, char *relname,
-			 Oid dbid, Oid relid,
-			 BlockNumber blkno, char *buffer,
-			 bool dofsync);
-extern int smgrblindmarkdirty(int16 which, char *dbname, char *relname,
-				   Oid dbid, Oid relid,
-				   BlockNumber blkno);
-#else
 extern int smgrblindwrt(int16 which, RelFileNode rnode,
 						BlockNumber blkno, char *buffer, bool dofsync);
 extern int smgrblindmarkdirty(int16 which, RelFileNode rnode,
 						BlockNumber blkno);
-#endif
 extern int	smgrmarkdirty(int16 which, Relation reln, BlockNumber blkno);
 extern int	smgrnblocks(int16 which, Relation reln);
 extern int	smgrtruncate(int16 which, Relation reln, int nblocks);
 extern int	smgrcommit(void);
 extern int	smgrabort(void);
 
+#ifdef XLOG
+extern int	smgrsync(void);
+#endif
 
 
 /* internals: move me elsewhere -- ay 7/94 */
@@ -71,22 +64,18 @@ extern int	mdread(Relation reln, BlockNumber blocknum, char *buffer);
 extern int	mdwrite(Relation reln, BlockNumber blocknum, char *buffer);
 extern int	mdflush(Relation reln, BlockNumber blocknum, char *buffer);
 extern int	mdmarkdirty(Relation reln, BlockNumber blkno);
-#ifdef OLD_FILE_NAMING
-extern int mdblindwrt(char *dbname, char *relname, Oid dbid, Oid relid,
-		   BlockNumber blkno, char *buffer,
-		   bool dofsync);
-extern int mdblindmarkdirty(char *dbname, char *relname, Oid dbid, Oid relid,
-				 BlockNumber blkno);
-#else
 extern int mdblindwrt(RelFileNode rnode, BlockNumber blkno,
 						char *buffer, bool dofsync);
 extern int mdblindmarkdirty(RelFileNode rnode, BlockNumber blkno);
-#endif
 extern int	mdnblocks(Relation reln);
 extern int	mdtruncate(Relation reln, int nblocks);
 extern int	mdcommit(void);
 extern int	mdabort(void);
 
+#ifdef XLOG
+extern int	mdsync(void);
+#endif
+
 /* mm.c */
 extern SPINLOCK MMCacheLock;