File size: 1,474 Bytes
660526b | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 | /*
* AM-callable functions for BRIN indexes
*
* Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* src/include/access/brin.h
*/
#ifndef BRIN_H
#define BRIN_H
#include "nodes/execnodes.h"
#include "storage/shm_toc.h"
#include "utils/relcache.h"
/*
* Storage type for BRIN's reloptions
*/
typedef struct BrinOptions
{
int32 vl_len_; /* varlena header (do not touch directly!) */
BlockNumber pagesPerRange;
bool autosummarize;
} BrinOptions;
/*
* BrinStatsData represents stats data for planner use
*/
typedef struct BrinStatsData
{
BlockNumber pagesPerRange;
BlockNumber revmapNumPages;
} BrinStatsData;
#define BRIN_DEFAULT_PAGES_PER_RANGE 128
#define BrinGetPagesPerRange(relation) \
(AssertMacro(relation->rd_rel->relkind == RELKIND_INDEX && \
relation->rd_rel->relam == BRIN_AM_OID), \
(relation)->rd_options ? \
((BrinOptions *) (relation)->rd_options)->pagesPerRange : \
BRIN_DEFAULT_PAGES_PER_RANGE)
#define BrinGetAutoSummarize(relation) \
(AssertMacro(relation->rd_rel->relkind == RELKIND_INDEX && \
relation->rd_rel->relam == BRIN_AM_OID), \
(relation)->rd_options ? \
((BrinOptions *) (relation)->rd_options)->autosummarize : \
false)
extern void brinGetStats(Relation index, BrinStatsData *stats);
extern void _brin_parallel_build_main(dsm_segment *seg, shm_toc *toc);
#endif /* BRIN_H */
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