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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/visibilitymapdefs.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/visibilitymapdefs.h')
| -rw-r--r-- | src/include/access/visibilitymapdefs.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/include/access/visibilitymapdefs.h b/src/include/access/visibilitymapdefs.h new file mode 100644 index 0000000..58be5a4 --- /dev/null +++ b/src/include/access/visibilitymapdefs.h @@ -0,0 +1,25 @@ +/*------------------------------------------------------------------------- + * + * visibilitymapdefs.h + * macros for accessing contents of visibility map pages + * + * + * Copyright (c) 2021, PostgreSQL Global Development Group + * + * src/include/access/visibilitymapdefs.h + * + *------------------------------------------------------------------------- + */ +#ifndef VISIBILITYMAPDEFS_H +#define VISIBILITYMAPDEFS_H + +/* Number of bits for one heap page */ +#define BITS_PER_HEAPBLOCK 2 + +/* Flags for bit map */ +#define VISIBILITYMAP_ALL_VISIBLE 0x01 +#define VISIBILITYMAP_ALL_FROZEN 0x02 +#define VISIBILITYMAP_VALID_BITS 0x03 /* OR of all valid visibilitymap + * flags bits */ + +#endif /* VISIBILITYMAPDEFS_H */ |