WAL

src/backend/access/transam/transsup.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/transam/Attic/transsup.c,v 1.25 2000/01/26 05:56:04 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/transam/Attic/transsup.c,v 1.26 2000/10/28 16:20:53 vadim Exp $
  *
  * NOTES
  *	  This file contains support functions for the high
@@ -186,6 +186,10 @@ TransBlockGetXidStatus(Block tblock,
 	bits8		bit2;
 	BitIndex	offset;
 
+#ifdef XLOG
+	tblock = (Block) ((char*) tblock + sizeof(XLogRecPtr));
+#endif
+
 	/* ----------------
 	 *	calculate the index into the transaction data where
 	 *	our transaction status is located
@@ -227,6 +231,10 @@ TransBlockSetXidStatus(Block tblock,
 	Index		index;
 	BitIndex	offset;
 
+#ifdef XLOG
+	tblock = (Block) ((char*) tblock + sizeof(XLogRecPtr));
+#endif
+
 	/* ----------------
 	 *	calculate the index into the transaction data where
 	 *	we sould store our transaction status.

src/backend/access/transam/varsup.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/transam/varsup.c,v 1.29 2000/07/25 20:18:19 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/transam/varsup.c,v 1.30 2000/10/28 16:20:53 vadim Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -125,7 +125,11 @@ VariableRelationPutNextXid(TransactionId xid)
 
 	TransactionIdStore(xid, &(var->nextXidData));
 
+#ifdef XLOG
+	WriteBuffer(buf);	/* temp */
+#else
 	FlushBuffer(buf, TRUE);
+#endif
 }
 
 /* --------------------------------

src/backend/access/transam/xact.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/transam/xact.c,v 1.77 2000/10/24 20:06:39 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/transam/xact.c,v 1.78 2000/10/28 16:20:53 vadim Exp $
  *
  * NOTES
  *		Transaction aborts can now occur two ways:
@@ -176,6 +176,8 @@
 
 extern bool SharedBufferChanged;
 
+void RecordTransactionCommit(void);
+
 static void AbortTransaction(void);
 static void AtAbort_Cache(void);
 static void AtAbort_Locks(void);
@@ -191,7 +193,6 @@ static void AtStart_Memory(void);
 static void CleanupTransaction(void);
 static void CommitTransaction(void);
 static void RecordTransactionAbort(void);
-static void RecordTransactionCommit(void);
 static void StartTransaction(void);
 
 /* ----------------
@@ -220,7 +221,7 @@ int			XactIsoLevel;
 #ifdef XLOG
 #include "access/xlogutils.h"
 
-int			CommitDelay = 100;
+int			CommitDelay = 5;	/* 1/200 sec */
 
 void		xact_redo(XLogRecPtr lsn, XLogRecord *record);
 void		xact_undo(XLogRecPtr lsn, XLogRecord *record);
@@ -658,8 +659,8 @@ AtStart_Memory(void)
  *			  -cim 3/18/90
  * --------------------------------
  */
-static void
-RecordTransactionCommit(void)
+void
+RecordTransactionCommit()
 {
 	TransactionId xid;
 	int			leak;
@@ -683,6 +684,8 @@ RecordTransactionCommit(void)
 		struct timeval	delay;
 		XLogRecPtr		recptr;
 
+		BufmgrCommit();
+
 		xlrec.xtime = time(NULL);
 		/*
 		 * MUST SAVE ARRAY OF RELFILENODE-s TO DROP

src/backend/access/transam/xlog.c

@@ -6,7 +6,7 @@
  * Portions Copyright (c) 1996-2000, PostgreSQL, Inc
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Header: /cvsroot/pgsql/src/backend/access/transam/xlog.c,v 1.21 2000/10/24 09:56:09 vadim Exp $
+ * $Header: /cvsroot/pgsql/src/backend/access/transam/xlog.c,v 1.22 2000/10/28 16:20:54 vadim Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -220,6 +220,8 @@ static uint32 readOff = 0;
 static char readBuf[BLCKSZ];
 static XLogRecord *nextRecord = NULL;
 
+static bool InRedo = false;
+
 XLogRecPtr
 XLogInsert(RmgrId rmid, uint8 info, char *hdr, uint32 hdrlen, char *buf, uint32 buflen)
 {
@@ -481,6 +483,19 @@ XLogFlush(XLogRecPtr record)
 	unsigned	i = 0;
 	bool		force_lgwr = false;
 
+	if (XLOG_DEBUG)
+	{
+		fprintf(stderr, "XLogFlush%s%s: rqst %u/%u; wrt %u/%u; flsh %u/%u\n",
+			(IsBootstrapProcessingMode()) ? "(bootstrap)" : "",
+			(InRedo) ? "(redo)" : "",
+			record.xlogid, record.xrecoff,
+			LgwrResult.Write.xlogid, LgwrResult.Write.xrecoff,
+			LgwrResult.Flush.xlogid, LgwrResult.Flush.xrecoff);
+		fflush(stderr);
+	}
+
+	if (IsBootstrapProcessingMode() || InRedo)
+		return;
 	if (XLByteLE(record, LgwrResult.Flush))
 		return;
 	WriteRqst = LgwrRqst.Write;
@@ -894,7 +909,7 @@ ReadRecord(XLogRecPtr *RecPtr, char *buffer)
 	record = (XLogRecord *) ((char *) readBuf + RecPtr->xrecoff % BLCKSZ);
 
 got_record:;
-	if (record->xl_len == 0 || record->xl_len >
+	if (record->xl_len >
 		(BLCKSZ - RecPtr->xrecoff % BLCKSZ - SizeOfXLogRecord))
 	{
 		elog(emode, "ReadRecord: invalid record len %u in (%u, %u)",
@@ -1259,7 +1274,6 @@ StartupXLOG()
 				LastRec;
 	XLogRecord *record;
 	char		buffer[MAXLOGRECSZ + SizeOfXLogRecord];
-	int			recovery = 0;
 	bool		sie_saved = false;
 
 #endif
@@ -1380,16 +1394,15 @@ StartupXLOG()
 			elog(STOP, "Invalid Redo/Undo record in shutdown checkpoint");
 		if (ControlFile->state == DB_SHUTDOWNED)
 			elog(STOP, "Invalid Redo/Undo record in Shutdowned state");
-		recovery = 1;
+		InRecovery = true;
 	}
 	else if (ControlFile->state != DB_SHUTDOWNED)
 	{
-		if (checkPoint.Shutdown)
-			elog(STOP, "Invalid state in control file");
-		recovery = 1;
+		InRecovery = true;
 	}
 
-	if (recovery)
+	/* REDO */
+	if (InRecovery)
 	{
 		elog(LOG, "The DataBase system was not properly shut down\n"
 			 "\tAutomatic recovery is in progress...");
@@ -1401,6 +1414,7 @@ StartupXLOG()
 		StopIfError = true;
 
 		XLogOpenLogRelation();	/* open pg_log */
+		XLogInitRelationCache();
 
 		/* Is REDO required ? */
 		if (XLByteLT(checkPoint.redo, RecPtr))
@@ -1409,9 +1423,9 @@ StartupXLOG()
 /* read past CheckPoint record */
 			record = ReadRecord(NULL, buffer);
 
-		/* REDO */
 		if (record->xl_len != 0)
 		{
+			InRedo = true;
 			elog(LOG, "Redo starts at (%u, %u)",
 				 ReadRecPtr.xlogid, ReadRecPtr.xrecoff);
 			do
@@ -1441,12 +1455,40 @@ StartupXLOG()
 			elog(LOG, "Redo done at (%u, %u)",
 				 ReadRecPtr.xlogid, ReadRecPtr.xrecoff);
 			LastRec = ReadRecPtr;
+			InRedo = false;
 		}
 		else
 			elog(LOG, "Redo is not required");
+	}
+
+	/* Init xlog buffer cache */
+	record = ReadRecord(&LastRec, buffer);
+	logId = EndRecPtr.xlogid;
+	logSeg = (EndRecPtr.xrecoff - 1) / XLogSegSize;
+	logOff = 0;
+	logFile = XLogFileOpen(logId, logSeg, false);
+	XLogCtl->xlblocks[0].xlogid = logId;
+	XLogCtl->xlblocks[0].xrecoff =
+		((EndRecPtr.xrecoff - 1) / BLCKSZ + 1) * BLCKSZ;
+	Insert = &XLogCtl->Insert;
+	memcpy((char *) (Insert->currpage), readBuf, BLCKSZ);
+	Insert->currpos = ((char *) Insert->currpage) +
+		(EndRecPtr.xrecoff + BLCKSZ - XLogCtl->xlblocks[0].xrecoff);
+	Insert->PrevRecord = LastRec;
+
+	LgwrRqst.Write = LgwrRqst.Flush =
+	LgwrResult.Write = LgwrResult.Flush = EndRecPtr;
+
+	XLogCtl->Write.LgwrResult = LgwrResult;
+	Insert->LgwrResult = LgwrResult;
+
+	XLogCtl->LgwrRqst = LgwrRqst;
+	XLogCtl->LgwrResult = LgwrResult;
 
 #ifdef NOT_USED
-		/* UNDO */
+	/* UNDO */
+	if (InRecovery)
+	{
 		RecPtr = ReadRecPtr;
 		if (XLByteLT(checkPoint.undo, RecPtr))
 		{
@@ -1465,29 +1507,16 @@ StartupXLOG()
 		}
 		else
 			elog(LOG, "Undo is not required");
-#endif
 	}
+#endif
 
-	/* Init xlog buffer cache */
-	record = ReadRecord(&LastRec, buffer);
-	logId = EndRecPtr.xlogid;
-	logSeg = (EndRecPtr.xrecoff - 1) / XLogSegSize;
-	logOff = 0;
-	logFile = XLogFileOpen(logId, logSeg, false);
-	XLogCtl->xlblocks[0].xlogid = logId;
-	XLogCtl->xlblocks[0].xrecoff =
-		((EndRecPtr.xrecoff - 1) / BLCKSZ + 1) * BLCKSZ;
-	Insert = &XLogCtl->Insert;
-	memcpy((char *) (Insert->currpage), readBuf, BLCKSZ);
-	Insert->currpos = ((char *) Insert->currpage) +
-		(EndRecPtr.xrecoff + BLCKSZ - XLogCtl->xlblocks[0].xrecoff);
-	Insert->PrevRecord = ControlFile->checkPoint;
-
-	if (recovery)
+	if (InRecovery)
 	{
 		CreateCheckPoint(true);
 		StopIfError = sie_saved;
+		XLogCloseRelationCache();
 	}
+	InRecovery = false;
 
 #endif	 /* XLOG */
 

src/backend/access/transam/xlogutils.c

@@ -22,6 +22,7 @@
 #include "access/htup.h"
 #include "access/xlogutils.h"
 #include "catalog/pg_database.h"
+#include "lib/hasht.h"
 
 /*
  * ---------------------------------------------------------------
@@ -240,32 +241,10 @@ static int					_xlcnt = 0;
 #define	_XLOG_INITRELCACHESIZE	32
 #define	_XLOG_MAXRELCACHESIZE	512
 
-void
-XLogCloseRelationCache(void)
-{
-	int i;
-
-	if (!_xlrelarr)
-		return;
-
-	for (i = 1; i < _xlast; i++)
-	{
-		Relation	reln = &(_xlrelarr[i].reldata);
-		if (reln->rd_fd >= 0)
-			smgrclose(DEFAULT_SMGR, reln);
-	}
-
-	free(_xlrelarr);
-	free(_xlpgcarr);
-
-	hash_destroy(_xlrelcache);
-	_xlrelarr = NULL;
-}
-
 static void
 _xl_init_rel_cache(void)
 {
-	HASHCTL	ctl;
+	HASHCTL			ctl;
 
 	_xlcnt = _XLOG_INITRELCACHESIZE;
 	_xlast = 0;
@@ -286,6 +265,35 @@ _xl_init_rel_cache(void)
 								HASH_ELEM | HASH_FUNCTION);
 }
 
+static void
+_xl_remove_hash_entry(XLogRelDesc **edata, int dummy)
+{
+	XLogRelCacheEntry	   *hentry;
+	bool					found;
+	XLogRelDesc			   *rdesc = *edata;
+	Form_pg_class			tpgc = rdesc->reldata.rd_rel;
+
+	rdesc->lessRecently->moreRecently = rdesc->moreRecently;
+	rdesc->moreRecently->lessRecently = rdesc->lessRecently;
+
+	hentry = (XLogRelCacheEntry*) hash_search(_xlrelcache, 
+		(char*)&(rdesc->reldata.rd_node), HASH_REMOVE, &found);
+
+	if (hentry == NULL)
+		elog(STOP, "_xl_remove_hash_entry: can't delete from cache");
+	if (!found)
+		elog(STOP, "_xl_remove_hash_entry: file was not found in cache");
+
+	if (rdesc->reldata.rd_fd >= 0)
+		smgrclose(DEFAULT_SMGR, &(rdesc->reldata));
+
+	memset(rdesc, 0, sizeof(XLogRelDesc));
+	memset(tpgc, 0, sizeof(FormData_pg_class));
+	rdesc->reldata.rd_rel = tpgc;
+
+	return;
+}
+
 static XLogRelDesc*
 _xl_new_reldesc(void)
 {
@@ -310,34 +318,43 @@ _xl_new_reldesc(void)
 	}
 	else /* reuse */
 	{
-		XLogRelCacheEntry	   *hentry;
-		bool					found;
-		XLogRelDesc			   *res = _xlrelarr[0].moreRecently;
-		Form_pg_class			tpgc = res->reldata.rd_rel;
+		XLogRelDesc	   *res = _xlrelarr[0].moreRecently;
 
-		res->lessRecently->moreRecently = res->moreRecently;
-		res->moreRecently->lessRecently = res->lessRecently;
-
-		hentry = (XLogRelCacheEntry*) hash_search(_xlrelcache, 
-			(char*)&(res->reldata.rd_node), HASH_REMOVE, &found);
-
-		if (hentry == NULL)
-			elog(STOP, "XLogOpenRelation: can't delete from cache");
-		if (!found)
-			elog(STOP, "XLogOpenRelation: file was not found in cache");
-
-		if (res->reldata.rd_fd >= 0)
-			smgrclose(DEFAULT_SMGR, &(res->reldata));
-
-		memset(res, 0, sizeof(XLogRelDesc));
-		memset(tpgc, 0, sizeof(FormData_pg_class));
-		res->reldata.rd_rel = tpgc;
+		_xl_remove_hash_entry(&res, 0);
 
 		_xlast--;
 		return(res);
 	}
 }
 
+extern void CreateDummyCaches(void);
+extern void DestroyDummyCaches(void);
+
+void
+XLogInitRelationCache(void)
+{
+	CreateDummyCaches();
+	_xl_init_rel_cache();
+}
+
+void
+XLogCloseRelationCache(void)
+{
+
+	DestroyDummyCaches();
+
+	if (!_xlrelarr)
+		return;
+
+	HashTableWalk(_xlrelcache, (HashtFunc)_xl_remove_hash_entry, 0);
+	hash_destroy(_xlrelcache);
+
+	free(_xlrelarr);
+	free(_xlpgcarr);
+
+	_xlrelarr = NULL;
+}
+
 Relation
 XLogOpenRelation(bool redo, RmgrId rmid, RelFileNode rnode)
 {
@@ -345,9 +362,6 @@ XLogOpenRelation(bool redo, RmgrId rmid, RelFileNode rnode)
 	XLogRelCacheEntry	   *hentry;
 	bool					found;
 
-	if (!_xlrelarr)
-		_xl_init_rel_cache();
-
 	hentry = (XLogRelCacheEntry*) 
 			hash_search(_xlrelcache, (char*)&rnode, HASH_FIND, &found);