bufmask.h

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/*-------------------------------------------------------------------------
 *
 * bufmask.h
 *    Definitions for buffer masking routines, used to mask certain bits
 *    in a page which can be different when the WAL is generated
 *    and when the WAL is applied. This is really the job of each
 *    individual rmgr, but we make things easier by providing some
 *    common routines to handle cases which occur in multiple rmgrs.
 *
 * Portions Copyright (c) 2016-2024, PostgreSQL Global Development Group
 *
 * src/include/access/bufmask.h
 *
 *-------------------------------------------------------------------------
 */
 
#ifndef BUFMASK_H
#define BUFMASK_H
 
#include "storage/block.h"
#include "storage/bufmgr.h"
 
/* Marker used to mask pages consistently */
#define MASK_MARKER     0
 
extern void mask_page_lsn_and_checksum(Page page);
extern void mask_page_hint_bits(Page page);
extern void mask_unused_space(Page page);
extern void mask_lp_flags(Page page);
extern void mask_page_content(Page page);
 
#endif