1 /* <!-- copyright */
2 /*
3  * aria2 - The high speed download utility
4  *
5  * Copyright (C) 2009 Tatsuhiro Tsujikawa
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  *
21  * In addition, as a special exception, the copyright holders give
22  * permission to link the code of portions of this program with the
23  * OpenSSL library under certain conditions as described in each
24  * individual source file, and distribute linked combinations
25  * including the two.
26  * You must obey the GNU General Public License in all respects
27  * for all of the code used other than OpenSSL.  If you modify
28  * file(s) with this exception, you may extend this exception to your
29  * version of the file(s), but you are not obligated to do so.  If you
30  * do not wish to do so, delete this exception statement from your
31  * version.  If you delete this exception statement from all source
32  * files in the program, then also delete it here.
33  */
34 /* copyright --> */
35 #ifndef D_PIECE_STAT_MAN_H
36 #define D_PIECE_STAT_MAN_H
37 
38 #include "common.h"
39 
40 #include <vector>
41 
42 namespace aria2 {
43 
44 class PieceStatMan {
45 private:
46   std::vector<size_t> order_;
47   std::vector<int> counts_;
48 
49 public:
50   PieceStatMan(size_t pieceNum, bool randomShuffle);
51 
52   ~PieceStatMan();
53 
54   void addPieceStats(size_t index);
55 
56   void addPieceStats(const unsigned char* bitfield, size_t bitfieldLength);
57 
58   void subtractPieceStats(const unsigned char* bitfield, size_t bitfieldLength);
59 
60   void updatePieceStats(const unsigned char* newBitfield,
61                         size_t newBitfieldLength,
62                         const unsigned char* oldBitfield);
63 
getOrder()64   const std::vector<size_t>& getOrder() const { return order_; }
65 
getCounts()66   const std::vector<int>& getCounts() const { return counts_; }
67 };
68 
69 } // namespace aria2
70 
71 #endif // D_PIECE_STAT_MAN_H
72