42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
/*
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* brin_revmap.h
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* Prototypes for BRIN reverse range maps
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*
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* Portions Copyright (c) 1996-2019, 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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* IDENTIFICATION
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* src/include/access/brin_revmap.h
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*/
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#ifndef BRIN_REVMAP_H
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#define BRIN_REVMAP_H
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#include "access/brin_tuple.h"
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#include "storage/block.h"
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#include "storage/buf.h"
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#include "storage/itemptr.h"
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#include "storage/off.h"
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#include "utils/relcache.h"
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#include "utils/snapshot.h"
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/* struct definition lives in brin_revmap.c */
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typedef struct BrinRevmap BrinRevmap;
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extern BrinRevmap *brinRevmapInitialize(Relation idxrel,
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BlockNumber *pagesPerRange, Snapshot snapshot);
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extern void brinRevmapTerminate(BrinRevmap *revmap);
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extern void brinRevmapExtend(BrinRevmap *revmap,
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BlockNumber heapBlk);
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extern Buffer brinLockRevmapPageForUpdate(BrinRevmap *revmap,
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BlockNumber heapBlk);
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extern void brinSetHeapBlockItemptr(Buffer buf, BlockNumber pagesPerRange,
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BlockNumber heapBlk, ItemPointerData tid);
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extern BrinTuple *brinGetTupleForHeapBlock(BrinRevmap *revmap,
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BlockNumber heapBlk, Buffer *buf, OffsetNumber *off,
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Size *size, int mode, Snapshot snapshot);
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extern bool brinRevmapDesummarizeRange(Relation idxrel, BlockNumber heapBlk);
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#endif /* BRIN_REVMAP_H */
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