118 lines
2.9 KiB
C
118 lines
2.9 KiB
C
/*-------------------------------------------------------------------------
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*
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* gistdesc.c
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* rmgr descriptor routines for access/gist/gistxlog.c
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*
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* Portions Copyright (c) 1996-2024, 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/gistdesc.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/gistxlog.h"
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#include "lib/stringinfo.h"
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static void
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out_gistxlogPageUpdate(StringInfo buf, gistxlogPageUpdate *xlrec)
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{
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}
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static void
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out_gistxlogPageReuse(StringInfo buf, gistxlogPageReuse *xlrec)
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{
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appendStringInfo(buf, "rel %u/%u/%u; blk %u; snapshotConflictHorizon %u:%u, isCatalogRel %c",
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xlrec->locator.spcOid, xlrec->locator.dbOid,
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xlrec->locator.relNumber, xlrec->block,
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EpochFromFullTransactionId(xlrec->snapshotConflictHorizon),
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XidFromFullTransactionId(xlrec->snapshotConflictHorizon),
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xlrec->isCatalogRel ? 'T' : 'F');
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}
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static void
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out_gistxlogDelete(StringInfo buf, gistxlogDelete *xlrec)
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{
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appendStringInfo(buf, "delete: snapshotConflictHorizon %u, nitems: %u, isCatalogRel %c",
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xlrec->snapshotConflictHorizon, xlrec->ntodelete,
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xlrec->isCatalogRel ? 'T' : 'F');
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}
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static void
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out_gistxlogPageSplit(StringInfo buf, gistxlogPageSplit *xlrec)
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{
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appendStringInfo(buf, "page_split: splits to %d pages",
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xlrec->npage);
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}
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static void
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out_gistxlogPageDelete(StringInfo buf, gistxlogPageDelete *xlrec)
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{
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appendStringInfo(buf, "deleteXid %u:%u; downlink %u",
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EpochFromFullTransactionId(xlrec->deleteXid),
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XidFromFullTransactionId(xlrec->deleteXid),
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xlrec->downlinkOffset);
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}
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void
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gist_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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switch (info)
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{
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case XLOG_GIST_PAGE_UPDATE:
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out_gistxlogPageUpdate(buf, (gistxlogPageUpdate *) rec);
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break;
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case XLOG_GIST_PAGE_REUSE:
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out_gistxlogPageReuse(buf, (gistxlogPageReuse *) rec);
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break;
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case XLOG_GIST_DELETE:
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out_gistxlogDelete(buf, (gistxlogDelete *) rec);
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break;
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case XLOG_GIST_PAGE_SPLIT:
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out_gistxlogPageSplit(buf, (gistxlogPageSplit *) rec);
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break;
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case XLOG_GIST_PAGE_DELETE:
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out_gistxlogPageDelete(buf, (gistxlogPageDelete *) rec);
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break;
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case XLOG_GIST_ASSIGN_LSN:
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/* No details to write out */
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break;
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}
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}
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const char *
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gist_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 XLOG_GIST_PAGE_UPDATE:
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id = "PAGE_UPDATE";
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break;
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case XLOG_GIST_DELETE:
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id = "DELETE";
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break;
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case XLOG_GIST_PAGE_REUSE:
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id = "PAGE_REUSE";
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break;
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case XLOG_GIST_PAGE_SPLIT:
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id = "PAGE_SPLIT";
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break;
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case XLOG_GIST_PAGE_DELETE:
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id = "PAGE_DELETE";
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break;
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case XLOG_GIST_ASSIGN_LSN:
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id = "ASSIGN_LSN";
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break;
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}
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return id;
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}
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