release/src/router/transmission/libtransmission/cache.h

   1 /*
   2  * This file Copyright (C) Mnemosyne LLC
   3  *
   4  * This file is licensed by the GPL version 2. Works owned by the
   5  * Transmission project are granted a special exemption to clause 2(b)
   6  * so that the bulk of its code can remain under the MIT license.
   7  * This exemption does not extend to derived works not owned by
   8  * the Transmission project.
   9  *
  10  * $Id: cache.h 11782 2011-01-29 18:56:53Z jordan $
  11  */
  12
  13 #ifndef __TRANSMISSION__
  14  #error only libtransmission should #include this header.
  15 #endif
  16
  17 #ifndef TR_CACHE_H
  18 #define TR_CACHE_H
  19
  20 struct evbuffer;
  21
  22 typedef struct tr_cache tr_cache;
  23
  24 /***
  25 ****
  26 ***/
  27
  28 tr_cache * tr_cacheNew( int64_t max_bytes );
  29
  30 void tr_cacheFree( tr_cache * );
  31
  32 /***
  33 ****
  34 ***/
  35
  36 int tr_cacheSetLimit( tr_cache * cache, int64_t max_bytes );
  37
  38 int64_t tr_cacheGetLimit( const tr_cache * );
  39
  40 int tr_cacheWriteBlock( tr_cache         * cache,
  41                         tr_torrent       * torrent,
  42                         tr_piece_index_t   piece,
  43                         uint32_t           offset,
  44                         uint32_t           len,
  45                         struct evbuffer  * writeme );
  46
  47 int tr_cacheReadBlock( tr_cache         * cache,
  48                        tr_torrent       * torrent,
  49                        tr_piece_index_t   piece,
  50                        uint32_t           offset,
  51                        uint32_t           len,
  52                        uint8_t          * setme );
  53
  54 int tr_cachePrefetchBlock( tr_cache         * cache,
  55                            tr_torrent       * torrent,
  56                            tr_piece_index_t   piece,
  57                            uint32_t           offset,
  58                            uint32_t           len );
  59
  60 /***
  61 ****
  62 ***/
  63 int tr_cacheFlushDone( tr_cache * cache );
  64
  65 int tr_cacheFlushTorrent( tr_cache    * cache,
  66                           tr_torrent  * torrent );
  67
  68 int tr_cacheFlushFile( tr_cache         * cache,
  69                        tr_torrent       * torrent,
  70                        tr_file_index_t    file );
  71
  72 #endif