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WAL misc

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This commit is contained in:
Vadim B. Mikheev
2000-10-24 09:56:23 +00:00
parent 4b70629b92
commit db2faa943a
7 changed files with 280 additions and 167 deletions
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66
src/backend/access/transam/xact.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/transam/xact.c,v 1.75 2000/10/23 04:10:05 vadim Exp $
* $Header: /cvsroot/pgsql/src/backend/access/transam/xact.c,v 1.76 2000/10/24 09:56:08 vadim Exp $
*
* NOTES
* Transaction aborts can now occur two ways:
@ -220,7 +220,7 @@ int XactIsoLevel;
#ifdef XLOG
#include "access/xlogutils.h"
int CommitDelay;
int CommitDelay = 100;
void xact_redo(XLogRecPtr lsn, XLogRecord *record);
void xact_undo(XLogRecPtr lsn, XLogRecord *record);
@ -676,7 +676,36 @@ RecordTransactionCommit()
*/
leak = BufferPoolCheckLeak();
#ifndef XLOG
#ifdef XLOG
if (MyLastRecPtr.xlogid != 0 || MyLastRecPtr.xrecoff != 0)
{
xl_xact_commit xlrec;
struct timeval delay;
XLogRecPtr recptr;
xlrec.xtime = time(NULL);
/*
* MUST SAVE ARRAY OF RELFILENODE-s TO DROP
*/
recptr = XLogInsert(RM_XACT_ID, XLOG_XACT_COMMIT,
(char*) &xlrec, SizeOfXactCommit, NULL, 0);
/*
* Sleep before commit! So we can flush more than one
* commit records per single fsync.
*/
delay.tv_sec = 0;
delay.tv_usec = CommitDelay;
(void) select(0, NULL, NULL, NULL, &delay);
XLogFlush(recptr);
MyLastRecPtr.xlogid = 0;
MyLastRecPtr.xrecoff = 0;
TransactionIdCommit(xid);
MyProc->logRec.xrecoff = 0;
}
#else
/*
* If no one shared buffer was changed by this transaction then we
* don't flush shared buffers and don't record commit status.
@ -687,39 +716,12 @@ RecordTransactionCommit()
if (leak)
ResetBufferPool(true);
#endif
/*
* have the transaction access methods record the status of this
* transaction id in the pg_log relation.
*/
TransactionIdCommit(xid);
#ifdef XLOG
if (MyLastRecPtr.xlogid != 0 || MyLastRecPtr.xrecoff != 0)
{
xl_xact_commit xlrec;
struct timeval delay;
XLogRecPtr recptr;
xlrec.xtime = time(NULL);
/*
* MUST SAVE ARRAY OF RELFILENODE-s TO DROP
*/
recptr = XLogInsert(RM_XACT_ID, XLOG_XACT_COMMIT,
(char*) &xlrec, SizeOfXactCommit, NULL, 0);
/*
* Sleep before commit! So we can flush more than one
* commit records per single fsync.
*/
delay.tv_sec = 0;
delay.tv_usec = CommitDelay;
(void) select(0, NULL, NULL, NULL, &delay);
XLogFlush(recptr);
MyLastRecPtr.xlogid = 0;
MyLastRecPtr.xrecoff = 0;
}
#else
/*
* Now write the log info to the disk too.
*/
@ -1737,12 +1739,12 @@ xact_redo(XLogRecPtr lsn, XLogRecord *record)
{
xl_xact_commit *xlrec = (xl_xact_commit*) XLogRecGetData(record);
XLogMarkCommitted(record->xl_xid);
TransactionIdCommit(record->xl_xid);
/* MUST REMOVE FILES OF ALL DROPPED RELATIONS */
}
else if (info == XLOG_XACT_ABORT)
{
XLogMarkAborted(record->xl_xid);
TransactionIdAbort(record->xl_xid);
}
else
elog(STOP, "xact_redo: unknown op code %u", info);