PostgreSQL Source Code: src/include/access/brin.h Source File

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brin.h
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1/*
2 * AM-callable functions for BRIN indexes
3 *
4 * Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group
5 * Portions Copyright (c) 1994, Regents of the University of California
6 *
7 * IDENTIFICATION
8 * src/include/access/brin.h
9 */
10#ifndef BRIN_H
11#define BRIN_H
12
13#include "nodes/execnodes.h"
14#include "storage/shm_toc.h"
15#include "utils/relcache.h"
16
17
18/*
19 * Storage type for BRIN's reloptions
20 */
21 typedef struct BrinOptions
22{
23 int32 vl_len_; /* varlena header (do not touch directly!) */
24 BlockNumber pagesPerRange;
25 bool autosummarize;
26 } BrinOptions;
27
28
29/*
30 * BrinStatsData represents stats data for planner use
31 */
32 typedef struct BrinStatsData
33{
34 BlockNumber pagesPerRange;
35 BlockNumber revmapNumPages;
36 } BrinStatsData;
37
38
39 #define BRIN_DEFAULT_PAGES_PER_RANGE 128
40 #define BrinGetPagesPerRange(relation) \
41 (AssertMacro(relation->rd_rel->relkind == RELKIND_INDEX && \
42 relation->rd_rel->relam == BRIN_AM_OID), \
43 (relation)->rd_options ? \
44 ((BrinOptions *) (relation)->rd_options)->pagesPerRange : \
45 BRIN_DEFAULT_PAGES_PER_RANGE)
46 #define BrinGetAutoSummarize(relation) \
47 (AssertMacro(relation->rd_rel->relkind == RELKIND_INDEX && \
48 relation->rd_rel->relam == BRIN_AM_OID), \
49 (relation)->rd_options ? \
50 ((BrinOptions *) (relation)->rd_options)->autosummarize : \
51 false)
52
53
54extern void brinGetStats(Relation index, BrinStatsData *stats);
55
56extern void _brin_parallel_build_main(dsm_segment *seg, shm_toc *toc);
57
58#endif /* BRIN_H */
uint32 BlockNumber
Definition: block.h:31
struct BrinOptions BrinOptions
struct BrinStatsData BrinStatsData
void brinGetStats(Relation index, BrinStatsData *stats)
Definition: brin.c:1648
void _brin_parallel_build_main(dsm_segment *seg, shm_toc *toc)
Definition: brin.c:2863
int32_t int32
Definition: c.h:534
Definition: brin.h:22
bool autosummarize
Definition: brin.h:25
BlockNumber pagesPerRange
Definition: brin.h:24
int32 vl_len_
Definition: brin.h:23
BlockNumber revmapNumPages
Definition: brin.h:35
BlockNumber pagesPerRange
Definition: brin.h:34
Definition: rel.h:56
Definition: dsm.c:67
Definition: type.h:96
Definition: shm_toc.c:27

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