src/cache.h

   1 /* vim:tw=78:ts=8:sw=4:set ft=c:  */
   2 /*
   3     Copyright (C) 2006-2010 Ben Kibbey <bjk@luxsci.net>
   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 2 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, write to the Free Software
  17     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02110-1301  USA
  18 */
  19 #ifndef CACHE_H
  20 #define CACHE_H
  21
  22 #include <pth.h>
  23 #include <glib.h>
  24 #include "status.h"
  25
  26 typedef struct {
  27     guchar filename[16];        /* MD5 hash. */
  28     guchar key[32];             /* SHA256 */
  29     glong timeout;              /* adjust_cache_time_thread(). */
  30     glong reset;                /* To reset .timeout. */
  31     pth_mutex_t *mutex;
  32     gint refcount;              /* The number of associated clients. */
  33 } file_cache_t;
  34
  35 GSList *key_cache;
  36 pth_mutex_t cache_mutex;
  37
  38 void cache_adjust_timer(void);
  39 gboolean cache_set_timeout(const guchar *md5filename, glong timeout);
  40 gboolean cache_reset_timeout(const guchar *md5filename, glong timeout);
  41 gboolean cache_iscached(const guchar *md5filename);
  42 gboolean cache_clear(const guchar *md5filename, gint which);
  43 gboolean cache_add_file(const guchar *md5file, const guchar *shakey);
  44 gboolean cache_get_key(const guchar *md5file, guchar *shakey);
  45 gboolean cache_update_key(const guchar *md5filename, const guchar *shakey);
  46 gint cache_file_count(void);
  47 gboolean cache_has_file(const guchar *md5file);
  48 gboolean cache_get_mutex(const guchar *md5filename, pth_mutex_t **result);
  49 gboolean cache_decr_refcount(const guchar *md5filename);
  50 gboolean cache_incr_refcount(const guchar *md5filename);
  51 void cache_free();
  52
  53 #endif