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57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
/*-------------------------------------------------------------------------
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*
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* genericdesc.c
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* rmgr descriptor routines for access/transam/generic_xlog.c
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*
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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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* src/backend/access/rmgrdesc/genericdesc.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/generic_xlog.h"
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#include "lib/stringinfo.h"
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#include "storage/relfilelocator.h"
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/*
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* Description of generic xlog record: write page regions that this record
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* overrides.
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*/
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void
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generic_desc(StringInfo buf, XLogReaderState *record)
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{
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Pointer ptr = XLogRecGetData(record),
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end = ptr + XLogRecGetDataLen(record);
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while (ptr < end)
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{
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OffsetNumber offset,
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length;
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memcpy(&offset, ptr, sizeof(offset));
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ptr += sizeof(offset);
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memcpy(&length, ptr, sizeof(length));
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ptr += sizeof(length);
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ptr += length;
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if (ptr < end)
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appendStringInfo(buf, "offset %u, length %u; ", offset, length);
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else
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appendStringInfo(buf, "offset %u, length %u", offset, length);
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}
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}
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/*
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* Identification of generic xlog record: we don't distinguish any subtypes
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* inside generic xlog records.
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*/
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const char *
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generic_identify(uint8 info)
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{
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return "Generic";
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}
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