kernel/include/cache.h

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2009  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   4  *
   5  *  This program is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19
  20 #ifndef _CACHE_H
  21 #define _CACHE_H
  22
  23 #define CACHE_MAGIC     0xe9
  24
  25 typedef struct {
  26         unsigned char magic;
  27         unsigned char prealloc;
  28         unsigned limit;
  29         unsigned curr;
  30
  31         char data;
  32 } cache_t;
  33
  34 extern unsigned int init_cache ();
  35 extern cache_t *cache_read ();
  36 extern cache_t *cache_add (char *buf, unsigned len);
  37 extern cache_t *cache_create (char *buf, unsigned len, unsigned char prealloc);
  38 extern int cache_close (cache_t *cache);
  39 extern int cache_closebyptr (void *ptr);
  40
  41 #endif