gen/libsaio/cache.h

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 1.1 (the "License").  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License.
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24
  25 typedef struct cache_item {
  26     unsigned int        referenced;
  27     int                 key1, key2;
  28     char                storage[0];
  29 } item_t;
  30
  31 typedef struct cache {
  32     int                 nitems;
  33     int                 item_size;
  34     char                storage[0];
  35 } cache_t;
  36
  37 extern cache_t *cacheInit(
  38     int nitems,
  39     int item_size
  40 );
  41
  42 extern int cacheFind(
  43     cache_t *cp,
  44     int key1,
  45     int key2,
  46     char **ip
  47 );
  48
  49 extern void cacheFlush(
  50     cache_t *cp
  51 );