87 lines
2.0 KiB
C
87 lines
2.0 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) 1996-2014, 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/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/gist_private.h"
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#include "lib/stringinfo.h"
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#include "storage/relfilenode.h"
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static void
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out_target(StringInfo buf, RelFileNode node)
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{
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appendStringInfo(buf, "rel %u/%u/%u",
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node.spcNode, node.dbNode, node.relNode);
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}
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static void
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out_gistxlogPageUpdate(StringInfo buf, gistxlogPageUpdate *xlrec)
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{
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out_target(buf, xlrec->node);
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appendStringInfo(buf, "; block number %u", xlrec->blkno);
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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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appendStringInfoString(buf, "page_split: ");
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out_target(buf, xlrec->node);
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appendStringInfo(buf, "; block number %u splits to %d pages",
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xlrec->origblkno, xlrec->npage);
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}
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void
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gist_desc(StringInfo buf, XLogRecord *record)
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{
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char *rec = XLogRecGetData(record);
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uint8 info = record->xl_info & ~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_SPLIT:
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out_gistxlogPageSplit(buf, (gistxlogPageSplit *) rec);
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break;
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case XLOG_GIST_CREATE_INDEX:
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appendStringInfo(buf, "rel %u/%u/%u",
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((RelFileNode *) rec)->spcNode,
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((RelFileNode *) rec)->dbNode,
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((RelFileNode *) rec)->relNode);
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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_PAGE_SPLIT:
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id = "PAGE_SPLIT";
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break;
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case XLOG_GIST_CREATE_INDEX:
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id = "CREATE_INDEX";
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break;
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}
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return id;
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}
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