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/*------------------------------------------------------------------------- * * visibilitymapdefs.h * macros for accessing contents of visibility map pages * * * Copyright (c) 2021-2024, 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 */ /* * To detect recovery conflicts during logical decoding on a standby, we need * to know if a table is a user catalog table. For that we add an additional * bit into xl_heap_visible.flags, in addition to the above. * * NB: VISIBILITYMAP_XLOG_* may not be passed to visibilitymap_set(). */ #define VISIBILITYMAP_XLOG_CATALOG_REL 0x04 #define VISIBILITYMAP_XLOG_VALID_BITS (VISIBILITYMAP_VALID_BITS | VISIBILITYMAP_XLOG_CATALOG_REL) #endif /* VISIBILITYMAPDEFS_H */