granicus.if.org Git - postgresql/blob - src/include/access/visibilitymap.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * visibilitymap.h
   4  *              visibility map interface
   5  *
   6  *
   7  * Portions Copyright (c) 2007-2014, PostgreSQL Global Development Group
   8  * Portions Copyright (c) 1994, Regents of the University of California
   9  *
  10  * src/include/access/visibilitymap.h
  11  *
  12  *-------------------------------------------------------------------------
  13  */
  14 #ifndef VISIBILITYMAP_H
  15 #define VISIBILITYMAP_H
  16
  17 #include "access/xlogdefs.h"
  18 #include "storage/block.h"
  19 #include "storage/buf.h"
  20 #include "utils/relcache.h"
  21
  22 extern void visibilitymap_clear(Relation rel, BlockNumber heapBlk,
  23                                         Buffer vmbuf);
  24 extern void visibilitymap_pin(Relation rel, BlockNumber heapBlk,
  25                                   Buffer *vmbuf);
  26 extern bool visibilitymap_pin_ok(BlockNumber heapBlk, Buffer vmbuf);
  27 extern void visibilitymap_set(Relation rel, BlockNumber heapBlk, Buffer heapBuf,
  28                                   XLogRecPtr recptr, Buffer vmBuf, TransactionId cutoff_xid);
  29 extern bool visibilitymap_test(Relation rel, BlockNumber heapBlk, Buffer *vmbuf);
  30 extern BlockNumber visibilitymap_count(Relation rel);
  31 extern void visibilitymap_truncate(Relation rel, BlockNumber nheapblocks);
  32
  33 #endif   /* VISIBILITYMAP_H */