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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:15:05 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:15:05 +0000 |
| commit | 46651ce6fe013220ed397add242004d764fc0153 (patch) | |
| tree | 6e5299f990f88e60174a1d3ae6e48eedd2688b2b /src/include/access/visibilitymap.h | |
| parent | Initial commit. (diff) | |
| download | postgresql-14-46651ce6fe013220ed397add242004d764fc0153.tar.xz postgresql-14-46651ce6fe013220ed397add242004d764fc0153.zip | |
Adding upstream version 14.5.upstream/14.5upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/include/access/visibilitymap.h')
| -rw-r--r-- | src/include/access/visibilitymap.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/src/include/access/visibilitymap.h b/src/include/access/visibilitymap.h new file mode 100644 index 0000000..0981b21 --- /dev/null +++ b/src/include/access/visibilitymap.h @@ -0,0 +1,42 @@ +/*------------------------------------------------------------------------- + * + * visibilitymap.h + * visibility map interface + * + * + * Portions Copyright (c) 2007-2021, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * src/include/access/visibilitymap.h + * + *------------------------------------------------------------------------- + */ +#ifndef VISIBILITYMAP_H +#define VISIBILITYMAP_H + +#include "access/visibilitymapdefs.h" +#include "access/xlogdefs.h" +#include "storage/block.h" +#include "storage/buf.h" +#include "utils/relcache.h" + +/* Macros for visibilitymap test */ +#define VM_ALL_VISIBLE(r, b, v) \ + ((visibilitymap_get_status((r), (b), (v)) & VISIBILITYMAP_ALL_VISIBLE) != 0) +#define VM_ALL_FROZEN(r, b, v) \ + ((visibilitymap_get_status((r), (b), (v)) & VISIBILITYMAP_ALL_FROZEN) != 0) + +extern bool visibilitymap_clear(Relation rel, BlockNumber heapBlk, + Buffer vmbuf, uint8 flags); +extern void visibilitymap_pin(Relation rel, BlockNumber heapBlk, + Buffer *vmbuf); +extern bool visibilitymap_pin_ok(BlockNumber heapBlk, Buffer vmbuf); +extern void visibilitymap_set(Relation rel, BlockNumber heapBlk, Buffer heapBuf, + XLogRecPtr recptr, Buffer vmBuf, TransactionId cutoff_xid, + uint8 flags); +extern uint8 visibilitymap_get_status(Relation rel, BlockNumber heapBlk, Buffer *vmbuf); +extern void visibilitymap_count(Relation rel, BlockNumber *all_visible, BlockNumber *all_frozen); +extern BlockNumber visibilitymap_prepare_truncate(Relation rel, + BlockNumber nheapblocks); + +#endif /* VISIBILITYMAP_H */ |