mirror of https://github.com/aria2/aria2
126 lines
3.2 KiB
C++
126 lines
3.2 KiB
C++
/* <!-- copyright */
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/*
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* aria2 - The high speed download utility
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*
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* Copyright (C) 2009 Tatsuhiro Tsujikawa
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of portions of this program with the
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* OpenSSL library under certain conditions as described in each
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* individual source file, and distribute linked combinations
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* including the two.
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* You must obey the GNU General Public License in all respects
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* for all of the code used other than OpenSSL. If you modify
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* file(s) with this exception, you may extend this exception to your
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* version of the file(s), but you are not obligated to do so. If you
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* do not wish to do so, delete this exception statement from your
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* version. If you delete this exception statement from all source
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* files in the program, then also delete it here.
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*/
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/* copyright --> */
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#ifndef D_PIECE_STAT_MAN_H
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#define D_PIECE_STAT_MAN_H
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#include "common.h"
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#include <vector>
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#include "SharedHandle.h"
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namespace aria2 {
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class PieceStat {
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private:
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size_t order_;
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size_t index_;
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size_t count_;
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public:
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PieceStat(size_t index);
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bool operator<(const PieceStat& pieceStat) const
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{
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if(count_ == pieceStat.count_) {
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return order_ < pieceStat.order_;
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} else {
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return count_ < pieceStat.count_;
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}
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}
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void addCount();
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void subCount();
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size_t getOrder() const
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{
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return order_;
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}
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void setOrder(size_t order)
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{
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order_ = order;
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}
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size_t getIndex() const
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{
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return index_;
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}
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size_t getCount() const
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{
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return count_;
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}
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};
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class PieceStatMan {
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private:
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std::vector<SharedHandle<PieceStat> > pieceStats_;
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std::vector<size_t> sortedPieceStatIndexes_;
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public:
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PieceStatMan(size_t pieceNum, bool randomShuffle);
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~PieceStatMan();
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void addPieceStats(size_t index);
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void addPieceStats(const unsigned char* bitfield,
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size_t bitfieldLength);
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void subtractPieceStats(const unsigned char* bitfield,
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size_t bitfieldLength);
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void updatePieceStats(const unsigned char* newBitfield,
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size_t newBitfieldLength,
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const unsigned char* oldBitfield);
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// Returns piece index in rarest first order.
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const std::vector<size_t>& getRarerPieceIndexes() const
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{
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return sortedPieceStatIndexes_;
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}
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const std::vector<SharedHandle<PieceStat> >& getPieceStats() const
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{
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return pieceStats_;
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}
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};
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} // namespace aria2
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#endif // D_PIECE_STAT_MAN_H
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