1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2015 The Qt Company Ltd. 4 ** Contact: http://www.qt.io/licensing/ 5 ** 6 ** This file is part of the examples of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:BSD$ 9 ** You may use this file under the terms of the BSD license as follows: 10 ** 11 ** "Redistribution and use in source and binary forms, with or without 12 ** modification, are permitted provided that the following conditions are 13 ** met: 14 ** * Redistributions of source code must retain the above copyright 15 ** notice, this list of conditions and the following disclaimer. 16 ** * Redistributions in binary form must reproduce the above copyright 17 ** notice, this list of conditions and the following disclaimer in 18 ** the documentation and/or other materials provided with the 19 ** distribution. 20 ** * Neither the name of The Qt Company Ltd nor the names of its 21 ** contributors may be used to endorse or promote products derived 22 ** from this software without specific prior written permission. 23 ** 24 ** 25 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 26 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 27 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 28 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 29 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 30 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 31 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 32 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 33 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 34 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 35 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." 36 ** 37 ** $QT_END_LICENSE$ 38 ** 39 ****************************************************************************/ 40 41 #ifndef RATECONTROLLER_H 42 #define RATECONTROLLER_H 43 44 #include <QObject> 45 #include <QSet> 46 #include <QTime> 47 48 class PeerWireClient; 49 50 class RateController : public QObject 51 { 52 Q_OBJECT 53 54 public: 55 inline RateController(QObject *parent = 0) QObject(parent)56 : QObject(parent), transferScheduled(false) { } 57 static RateController *instance(); 58 59 void addSocket(PeerWireClient *socket); 60 void removeSocket(PeerWireClient *socket); 61 uploadLimit()62 inline int uploadLimit() const { return upLimit; } downloadLimit()63 inline int downloadLimit() const { return downLimit; } setUploadLimit(int bytesPerSecond)64 inline void setUploadLimit(int bytesPerSecond) { upLimit = bytesPerSecond; } 65 void setDownloadLimit(int bytesPerSecond); 66 67 public slots: 68 void transfer(); 69 void scheduleTransfer(); 70 71 private: 72 QTime stopWatch; 73 QSet<PeerWireClient *> sockets; 74 int upLimit; 75 int downLimit; 76 bool transferScheduled; 77 }; 78 79 #endif 80