59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
/*
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* AM-callable functions for BRIN indexes
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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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* IDENTIFICATION
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* src/include/access/brin.h
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*/
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#ifndef BRIN_H
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#define BRIN_H
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#include "nodes/execnodes.h"
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#include "storage/shm_toc.h"
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#include "utils/relcache.h"
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/*
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* Storage type for BRIN's reloptions
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*/
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typedef struct BrinOptions
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{
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int32 vl_len_; /* varlena header (do not touch directly!) */
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BlockNumber pagesPerRange;
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bool autosummarize;
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} BrinOptions;
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/*
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* BrinStatsData represents stats data for planner use
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*/
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typedef struct BrinStatsData
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{
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BlockNumber pagesPerRange;
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BlockNumber revmapNumPages;
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} BrinStatsData;
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#define BRIN_DEFAULT_PAGES_PER_RANGE 128
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#define BrinGetPagesPerRange(relation) \
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(AssertMacro(relation->rd_rel->relkind == RELKIND_INDEX && \
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relation->rd_rel->relam == BRIN_AM_OID), \
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(relation)->rd_options ? \
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((BrinOptions *) (relation)->rd_options)->pagesPerRange : \
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BRIN_DEFAULT_PAGES_PER_RANGE)
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#define BrinGetAutoSummarize(relation) \
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(AssertMacro(relation->rd_rel->relkind == RELKIND_INDEX && \
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relation->rd_rel->relam == BRIN_AM_OID), \
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(relation)->rd_options ? \
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((BrinOptions *) (relation)->rd_options)->autosummarize : \
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false)
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extern void brinGetStats(Relation index, BrinStatsData *stats);
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extern void _brin_parallel_build_main(dsm_segment *seg, shm_toc *toc);
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#endif /* BRIN_H */
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