/*-------------------------------------------------------------------------
*
* clogdesc . c
* rmgr descriptor routines for access / transam / clog . c
*
* Portions Copyright ( c ) 1996 - 2025 , PostgreSQL Global Development Group
* Portions Copyright ( c ) 1994 , Regents of the University of California
*
*
* IDENTIFICATION
* src / backend / access / rmgrdesc / clogdesc . c
*
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
*/
#include "postgres.h"
#include "access/clog.h"
void
clog_desc(StringInfo buf, XLogReaderState *record)
{
char *rec = XLogRecGetData(record);
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
if (info == CLOG_ZEROPAGE)
{
int64 pageno;
memcpy(&pageno, rec, sizeof (pageno));
appendStringInfo(buf, "page %" PRId64, pageno);
}
else if (info == CLOG_TRUNCATE)
{
xl_clog_truncate xlrec;
memcpy(&xlrec, rec, sizeof (xl_clog_truncate));
appendStringInfo(buf, "page %" PRId64 "; oldestXact %u" ,
xlrec.pageno, xlrec.oldestXact);
}
}
const char *
clog_identify(uint8 info)
{
const char *id = NULL;
switch (info & ~XLR_INFO_MASK)
{
case CLOG_ZEROPAGE:
id = "ZEROPAGE" ;
break ;
case CLOG_TRUNCATE:
id = "TRUNCATE" ;
break ;
}
return id;
}
Messung V0.5 in Prozent C=93 H=91 G=91
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-08-08)
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