granicus.if.org Git - postgresql/blob - src/include/utils/inval.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * inval.h--
   4  *        POSTGRES cache invalidation dispatcher definitions.
   5  *
   6  *
   7  * Copyright (c) 1994, Regents of the University of California
   8  *
   9  * $Id: inval.h,v 1.5 1997/09/07 05:02:36 momjian Exp $
  10  *
  11  *-------------------------------------------------------------------------
  12  */
  13 #ifndef INVAL_H
  14 #define INVAL_H
  15
  16 #include <access/htup.h>
  17 #include <utils/rel.h>
  18
  19 extern void             DiscardInvalid(void);
  20
  21 extern void             RegisterInvalid(bool send);
  22
  23 extern void             SetRefreshWhenInvalidate(bool on);
  24
  25 extern void             RelationInvalidateHeapTuple(Relation relation, HeapTuple tuple);
  26
  27 /*
  28  * POSTGRES local cache invalidation definitions. (originates from linval.h)
  29  */
  30 typedef struct InvalidationUserData
  31 {
  32         struct InvalidationUserData *dataP[1];          /* VARIABLE LENGTH */
  33 }                               InvalidationUserData;   /* VARIABLE LENGTH STRUCTURE */
  34
  35 typedef struct InvalidationEntryData
  36 {
  37         InvalidationUserData *nextP;
  38         InvalidationUserData userData;          /* VARIABLE LENGTH ARRAY */
  39 }                               InvalidationEntryData;  /* VARIABLE LENGTH STRUCTURE */
  40
  41 typedef Pointer InvalidationEntry;
  42
  43 typedef InvalidationEntry LocalInvalid;
  44
  45 #define EmptyLocalInvalid               NULL
  46
  47 #endif                                                  /* INVAL_H */