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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:19:15 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:19:15 +0000 |
| commit | 6eb9c5a5657d1fe77b55cc261450f3538d35a94d (patch) | |
| tree | 657d8194422a5daccecfd42d654b8a245ef7b4c8 /src/include/storage/freespace.h | |
| parent | Initial commit. (diff) | |
| download | postgresql-13-6eb9c5a5657d1fe77b55cc261450f3538d35a94d.tar.xz postgresql-13-6eb9c5a5657d1fe77b55cc261450f3538d35a94d.zip | |
Adding upstream version 13.4.upstream/13.4upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/include/storage/freespace.h')
| -rw-r--r-- | src/include/storage/freespace.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/include/storage/freespace.h b/src/include/storage/freespace.h new file mode 100644 index 0000000..81668ad --- /dev/null +++ b/src/include/storage/freespace.h @@ -0,0 +1,39 @@ +/*------------------------------------------------------------------------- + * + * freespace.h + * POSTGRES free space map for quickly finding free space in relations + * + * + * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * src/include/storage/freespace.h + * + *------------------------------------------------------------------------- + */ +#ifndef FREESPACE_H_ +#define FREESPACE_H_ + +#include "storage/block.h" +#include "storage/relfilenode.h" +#include "utils/relcache.h" + +/* prototypes for public functions in freespace.c */ +extern Size GetRecordedFreeSpace(Relation rel, BlockNumber heapBlk); +extern BlockNumber GetPageWithFreeSpace(Relation rel, Size spaceNeeded); +extern BlockNumber RecordAndGetPageWithFreeSpace(Relation rel, + BlockNumber oldPage, + Size oldSpaceAvail, + Size spaceNeeded); +extern void RecordPageWithFreeSpace(Relation rel, BlockNumber heapBlk, + Size spaceAvail); +extern void XLogRecordPageWithFreeSpace(RelFileNode rnode, BlockNumber heapBlk, + Size spaceAvail); + +extern BlockNumber FreeSpaceMapPrepareTruncateRel(Relation rel, + BlockNumber nblocks); +extern void FreeSpaceMapVacuum(Relation rel); +extern void FreeSpaceMapVacuumRange(Relation rel, BlockNumber start, + BlockNumber end); + +#endif /* FREESPACE_H_ */ |