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postgres/src/include/access/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, PostgreSQL Global Development Group
*
* src/include/access/bufmask.h
*
*-------------------------------------------------------------------------
*/
#ifndef BUFMASK_H
#define BUFMASK_H
#include "postgres.h"
#include "storage/block.h"
#include "storage/bufmgr.h"
/* Marker used to mask pages consistently */
#define MASK_MARKER 0
extern void mask_page_lsn(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