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pg_variable is not used in WAL version now.

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This commit is contained in:
Vadim B. Mikheev
2000-11-03 11:39:36 +00:00
parent b703c127ed
commit b98ba2a04c
5 changed files with 197 additions and 13 deletions
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37
src/backend/access/transam/xlog.c
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@ -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 1.22 2000/10/28 16:20:54 vadim Exp $
* $Header: /cvsroot/pgsql/src/backend/access/transam/xlog.c,v 1.23 2000/11/03 11:39:35 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@ -157,6 +157,7 @@ typedef struct CheckPoint
} CheckPoint;
#define XLOG_CHECKPOINT 0x00
#define XLOG_NEXTOID 0x10
/*
* We break each log file in 16Mb segments
@ -1373,10 +1374,9 @@ StartupXLOG()
elog(LOG, "Invalid NextTransactionId/NextOid");
#endif
#ifdef XLOG_2
ShmemVariableCache->nextXid = checkPoint.nextXid;
ShmemVariableCache->nextOid = checkPoint.nextOid;
#endif
ShmemVariableCache->oidCount = 0;
ThisStartUpID = checkPoint.ThisStartUpID;
@ -1430,10 +1430,8 @@ StartupXLOG()
ReadRecPtr.xlogid, ReadRecPtr.xrecoff);
do
{
#ifdef XLOG_2
if (record->xl_xid >= ShmemVariableCache->nextXid)
ShmemVariableCache->nextXid = record->xl_xid + 1;
#endif
if (XLOG_DEBUG)
{
char buf[8192];
@ -1609,6 +1607,9 @@ CreateCheckPoint(bool shutdown)
SpinRelease(XidGenLockId);
SpinAcquire(OidGenLockId);
checkPoint.nextOid = ShmemVariableCache->nextOid;
if (!shutdown)
checkPoint.nextOid += ShmemVariableCache->oidCount;
SpinRelease(OidGenLockId);
FlushBufferPool();
@ -1647,6 +1648,15 @@ CreateCheckPoint(bool shutdown)
return;
}
void XLogPutNextOid(Oid nextOid);
void
XLogPutNextOid(Oid nextOid)
{
(void) XLogInsert(RM_XLOG_ID, XLOG_NEXTOID,
(char *) &nextOid, sizeof(Oid), NULL, 0);
}
void xlog_redo(XLogRecPtr lsn, XLogRecord *record);
void xlog_undo(XLogRecPtr lsn, XLogRecord *record);
void xlog_desc(char *buf, uint8 xl_info, char* rec);
@ -1654,6 +1664,16 @@ void xlog_desc(char *buf, uint8 xl_info, char* rec);
void
xlog_redo(XLogRecPtr lsn, XLogRecord *record)
{
uint8 info = record->xl_info & ~XLR_INFO_MASK;
if (info == XLOG_NEXTOID)
{
Oid nextOid;
memcpy(&nextOid, XLogRecGetData(record), sizeof(Oid));
if (ShmemVariableCache->nextOid < nextOid)
ShmemVariableCache->nextOid = nextOid;
}
}
void
@ -1677,6 +1697,13 @@ xlog_desc(char *buf, uint8 xl_info, char* rec)
checkpoint->nextOid,
(checkpoint->Shutdown) ? "shutdown" : "online");
}
else if (info == XLOG_NEXTOID)
{
Oid nextOid;
memcpy(&nextOid, rec, sizeof(Oid));
sprintf(buf + strlen(buf), "nextOid: %u", nextOid);
}
else
strcat(buf, "UNKNOWN");
}