diff options
| author | Alexander Korotkov <akorotkov@postgresql.org> | 2021-09-23 19:59:03 +0300 |
|---|---|---|
| committer | Alexander Korotkov <akorotkov@postgresql.org> | 2021-09-23 19:59:11 +0300 |
| commit | 7186f07189baf069c54718315b81e65d87f4c0c1 (patch) | |
| tree | 4e96039e098347b710a592f13c1c102eb3b2ab3b /src/include/access/visibilitymapdefs.h | |
| parent | abb2f9144ba1b7ac806f3779f53ae2f6174cd2d9 (diff) | |
Split macros from visibilitymap.h into a separate header
That allows to include just visibilitymapdefs.h from file.c, and in turn,
remove include of postgres.h from relcache.h.
Reported-by: Andres Freund
Discussion: https://postgr.es/m/20210913232614.czafiubr435l6egi%40alap3.anarazel.de
Author: Alexander Korotkov
Reviewed-by: Andres Freund, Tom Lane, Alvaro Herrera
Backpatch-through: 13
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 00000000000..58be5a4b61c --- /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 */ |