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Repair two problems with WAL logging of sequence nextvalI() ops, as

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per recent pghackers discussion: force a new WAL record at first nextval
after a checkpoint, and ensure that xlog is flushed to disk if a nextval
record is the only thing emitted by a transaction.
This commit is contained in:
Tom Lane
2002-03-15 19:20:36 +00:00
parent 0b73fe14f1
commit 01747692fe
6 changed files with 147 additions and 68 deletions
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9
src/include/access/xlog.h
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@@ -6,7 +6,7 @@
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: xlog.h,v 1.28 2001/11/05 17:46:31 momjian Exp $
* $Id: xlog.h,v 1.29 2002/03/15 19:20:36 tgl Exp $
*/
#ifndef XLOG_H
#define XLOG_H
@@ -178,6 +178,8 @@ typedef struct XLogRecData
extern StartUpID ThisStartUpID; /* current SUI */
extern bool InRecovery;
extern XLogRecPtr MyLastRecPtr;
extern bool MyXactMadeXLogEntry;
extern XLogRecPtr ProcLastRecEnd;
/* these variables are GUC parameters related to XLOG */
extern int CheckPointSegments;
@@ -205,8 +207,9 @@ extern void ShutdownXLOG(void);
extern void CreateCheckPoint(bool shutdown);
extern void SetThisStartUpID(void);
extern void XLogPutNextOid(Oid nextOid);
extern void SetRedoRecPtr(void);
extern void GetRedoRecPtr(void);
extern void SetSavedRedoRecPtr(void);
extern void GetSavedRedoRecPtr(void);
extern XLogRecPtr GetRedoRecPtr(void);
/* in storage/ipc/sinval.c, but don't want to declare in sinval.h because
* we'd have to include xlog.h into that ...