src/include/access/bufmask.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * bufmask.h
   4  *        Definitions for buffer masking routines, used to mask certain bits
   5  *        in a page which can be different when the WAL is generated
   6  *        and when the WAL is applied. This is really the job of each
   7  *        individual rmgr, but we make things easier by providing some
   8  *        common routines to handle cases which occur in multiple rmgrs.
   9  *
  10  * Portions Copyright (c) 2016-2021, PostgreSQL Global Development Group
  11  *
  12  * src/include/access/bufmask.h
  13  *
  14  *-------------------------------------------------------------------------
  15  */
  16
  17 #ifndef BUFMASK_H
  18 #define BUFMASK_H
  19
  20 #include "storage/block.h"
  21 #include "storage/bufmgr.h"
  22
  23 /* Marker used to mask pages consistently */
  24 #define MASK_MARKER             0
  25
  26 extern void mask_page_lsn_and_checksum(Page page);
  27 extern void mask_page_hint_bits(Page page);
  28 extern void mask_unused_space(Page page);
  29 extern void mask_lp_flags(Page page);
  30 extern void mask_page_content(Page page);
  31
  32 #endif