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Version:
13.21-1.pgdg120+1 ▾
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/*-------------------------------------------------------------------------
*
* 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 */