83 lines
1.8 KiB
C
83 lines
1.8 KiB
C
/*-------------------------------------------------------------------------
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*
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* committsdesc.c
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* rmgr descriptor routines for access/transam/commit_ts.c
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*
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* Portions Copyright (c) 1996-2014, 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/committsdesc.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/commit_ts.h"
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#include "utils/timestamp.h"
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void
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commit_ts_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 == COMMIT_TS_ZEROPAGE)
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{
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int pageno;
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memcpy(&pageno, rec, sizeof(int));
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appendStringInfo(buf, "%d", pageno);
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}
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else if (info == COMMIT_TS_TRUNCATE)
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{
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int pageno;
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memcpy(&pageno, rec, sizeof(int));
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appendStringInfo(buf, "%d", pageno);
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}
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else if (info == COMMIT_TS_SETTS)
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{
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xl_commit_ts_set *xlrec = (xl_commit_ts_set *) rec;
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int nsubxids;
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appendStringInfo(buf, "set %s/%d for: %u",
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timestamptz_to_str(xlrec->timestamp),
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xlrec->nodeid,
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xlrec->mainxid);
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nsubxids = ((XLogRecGetDataLen(record) - SizeOfCommitTsSet) /
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sizeof(TransactionId));
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if (nsubxids > 0)
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{
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int i;
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TransactionId *subxids;
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subxids = palloc(sizeof(TransactionId) * nsubxids);
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memcpy(subxids,
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XLogRecGetData(record) + SizeOfCommitTsSet,
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sizeof(TransactionId) * nsubxids);
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for (i = 0; i < nsubxids; i++)
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appendStringInfo(buf, ", %u", subxids[i]);
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pfree(subxids);
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}
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}
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}
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const char *
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commit_ts_identify(uint8 info)
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{
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switch (info)
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{
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case COMMIT_TS_ZEROPAGE:
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return "ZEROPAGE";
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case COMMIT_TS_TRUNCATE:
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return "TRUNCATE";
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case COMMIT_TS_SETTS:
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return "SETTS";
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default:
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return NULL;
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}
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}
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