init

db_include/access/brin_revmap.h

@@ -0,0 +1,41 @@
+/*
+ * brin_revmap.h
+ *		Prototypes for BRIN reverse range maps
+ *
+ * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * IDENTIFICATION
+ *		src/include/access/brin_revmap.h
+ */
+
+#ifndef BRIN_REVMAP_H
+#define BRIN_REVMAP_H
+
+#include "access/brin_tuple.h"
+#include "storage/block.h"
+#include "storage/buf.h"
+#include "storage/itemptr.h"
+#include "storage/off.h"
+#include "utils/relcache.h"
+#include "utils/snapshot.h"
+
+/* struct definition lives in brin_revmap.c */
+typedef struct BrinRevmap BrinRevmap;
+
+extern BrinRevmap *brinRevmapInitialize(Relation idxrel,
+										BlockNumber *pagesPerRange, Snapshot snapshot);
+extern void brinRevmapTerminate(BrinRevmap *revmap);
+
+extern void brinRevmapExtend(BrinRevmap *revmap,
+							 BlockNumber heapBlk);
+extern Buffer brinLockRevmapPageForUpdate(BrinRevmap *revmap,
+										  BlockNumber heapBlk);
+extern void brinSetHeapBlockItemptr(Buffer buf, BlockNumber pagesPerRange,
+									BlockNumber heapBlk, ItemPointerData tid);
+extern BrinTuple *brinGetTupleForHeapBlock(BrinRevmap *revmap,
+										   BlockNumber heapBlk, Buffer *buf, OffsetNumber *off,
+										   Size *size, int mode, Snapshot snapshot);
+extern bool brinRevmapDesummarizeRange(Relation idxrel, BlockNumber heapBlk);
+
+#endif							/* BRIN_REVMAP_H */