60 lines
1.2 KiB
C
60 lines
1.2 KiB
C
/*-------------------------------------------------------------------------
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*
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* clogdesc.c
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* rmgr descriptor routines for access/transam/clog.c
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*
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* Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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*
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* IDENTIFICATION
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* src/backend/access/rmgrdesc/clogdesc.c
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*
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*-------------------------------------------------------------------------
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*/
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#include "postgres.h"
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#include "access/clog.h"
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void
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clog_desc(StringInfo buf, XLogReaderState *record)
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{
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char *rec = XLogRecGetData(record);
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uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
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if (info == CLOG_ZEROPAGE)
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{
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int64 pageno;
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memcpy(&pageno, rec, sizeof(pageno));
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appendStringInfo(buf, "page %lld", (long long) pageno);
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}
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else if (info == CLOG_TRUNCATE)
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{
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xl_clog_truncate xlrec;
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memcpy(&xlrec, rec, sizeof(xl_clog_truncate));
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appendStringInfo(buf, "page %lld; oldestXact %u",
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(long long) xlrec.pageno, xlrec.oldestXact);
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}
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}
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const char *
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clog_identify(uint8 info)
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{
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const char *id = NULL;
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switch (info & ~XLR_INFO_MASK)
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{
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case CLOG_ZEROPAGE:
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id = "ZEROPAGE";
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break;
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case CLOG_TRUNCATE:
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id = "TRUNCATE";
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break;
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}
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return id;
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}
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