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freespace.h
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1 /*-------------------------------------------------------------------------
2  *
3  * freespace.h
4  * POSTGRES free space map for quickly finding free space in relations
5  *
6  *
7  * Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
8  * Portions Copyright (c) 1994, Regents of the University of California
9  *
10  * src/include/storage/freespace.h
11  *
12  *-------------------------------------------------------------------------
13  */
14 #ifndef FREESPACE_H_
15 #define FREESPACE_H_
16 
17 #include "storage/block.h"
18 #include "storage/relfilelocator.h"
19 #include "utils/relcache.h"
20 
21 /* prototypes for public functions in freespace.c */
22 extern Size GetRecordedFreeSpace(Relation rel, BlockNumber heapBlk);
23 extern BlockNumber GetPageWithFreeSpace(Relation rel, Size spaceNeeded);
25  BlockNumber oldPage,
26  Size oldSpaceAvail,
27  Size spaceNeeded);
28 extern void RecordPageWithFreeSpace(Relation rel, BlockNumber heapBlk,
29  Size spaceAvail);
30 extern void XLogRecordPageWithFreeSpace(RelFileLocator rlocator, BlockNumber heapBlk,
31  Size spaceAvail);
32 
34  BlockNumber nblocks);
35 extern void FreeSpaceMapVacuum(Relation rel);
36 extern void FreeSpaceMapVacuumRange(Relation rel, BlockNumber start,
37  BlockNumber end);
38 
39 #endif /* FREESPACE_H_ */
uint32 BlockNumber
Definition: block.h:31
size_t Size
Definition: c.h:592
void FreeSpaceMapVacuumRange(Relation rel, BlockNumber start, BlockNumber end)
Definition: freespace.c:354
BlockNumber RecordAndGetPageWithFreeSpace(Relation rel, BlockNumber oldPage, Size oldSpaceAvail, Size spaceNeeded)
Definition: freespace.c:150
void FreeSpaceMapVacuum(Relation rel)
Definition: freespace.c:335
Size GetRecordedFreeSpace(Relation rel, BlockNumber heapBlk)
Definition: freespace.c:232
void RecordPageWithFreeSpace(Relation rel, BlockNumber heapBlk, Size spaceAvail)
Definition: freespace.c:182
void XLogRecordPageWithFreeSpace(RelFileLocator rlocator, BlockNumber heapBlk, Size spaceAvail)
Definition: freespace.c:199
BlockNumber GetPageWithFreeSpace(Relation rel, Size spaceNeeded)
Definition: freespace.c:133
BlockNumber FreeSpaceMapPrepareTruncateRel(Relation rel, BlockNumber nblocks)
Definition: freespace.c:263