i386/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 #ifndef __LIBSAIO_CACHE_H
  26 #define __LIBSAIO_CACHE_H
  27
  28 typedef struct cache_item {
  29     unsigned int        referenced;
  30     int                 key1, key2;
  31     char                storage[0];
  32 } item_t;
  33
  34 typedef struct cache {
  35     int                 nitems;
  36     int                 item_size;
  37     char                storage[0];
  38 } cache_t;
  39
  40 extern cache_t *cacheInit(
  41     int nitems,
  42     int item_size
  43 );
  44
  45 extern int cacheFind(
  46     cache_t *cp,
  47     int key1,
  48     int key2,
  49     char **ip
  50 );
  51
  52 extern void cacheFlush(
  53     cache_t *cp
  54 );
  55
  56 #endif /* !__LIBSAIO_CACHE_H */