src/include/access/brin_revmap.h

   1 /*
   2  * brin_revmap.h
   3  *              Prototypes for BRIN reverse range maps
   4  *
   5  * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
   6  * Portions Copyright (c) 1994, Regents of the University of California
   7  *
   8  * IDENTIFICATION
   9  *              src/include/access/brin_revmap.h
  10  */
  11
  12 #ifndef BRIN_REVMAP_H
  13 #define BRIN_REVMAP_H
  14
  15 #include "access/brin_tuple.h"
  16 #include "storage/block.h"
  17 #include "storage/buf.h"
  18 #include "storage/itemptr.h"
  19 #include "storage/off.h"
  20 #include "utils/relcache.h"
  21 #include "utils/snapshot.h"
  22
  23 /* struct definition lives in brin_revmap.c */
  24 typedef struct BrinRevmap BrinRevmap;
  25
  26 extern BrinRevmap *brinRevmapInitialize(Relation idxrel,
  27                                                                                 BlockNumber *pagesPerRange, Snapshot snapshot);
  28 extern void brinRevmapTerminate(BrinRevmap *revmap);
  29
  30 extern void brinRevmapExtend(BrinRevmap *revmap,
  31                                                          BlockNumber heapBlk);
  32 extern Buffer brinLockRevmapPageForUpdate(BrinRevmap *revmap,
  33                                                                                   BlockNumber heapBlk);
  34 extern void brinSetHeapBlockItemptr(Buffer buf, BlockNumber pagesPerRange,
  35                                                                         BlockNumber heapBlk, ItemPointerData tid);
  36 extern BrinTuple *brinGetTupleForHeapBlock(BrinRevmap *revmap,
  37                                                                                    BlockNumber heapBlk, Buffer *buf, OffsetNumber *off,
  38                                                                                    Size *size, int mode, Snapshot snapshot);
  39 extern bool brinRevmapDesummarizeRange(Relation idxrel, BlockNumber heapBlk);
  40
  41 #endif                                                  /* BRIN_REVMAP_H */