2b75c156b6
Change-Id: I6441ff931dbd33b698d762e6f6784898f3f60fe7 Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
144 lines
4.3 KiB
C++
144 lines
4.3 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef FILEMANAGER_H
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#define FILEMANAGER_H
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#include <QBitArray>
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#include <QList>
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#include <QMutex>
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#include <QThread>
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#include <QWaitCondition>
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#include "metainfo.h"
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QT_BEGIN_NAMESPACE
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class QByteArray;
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class QFile;
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class QTimerEvent;
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QT_END_NAMESPACE
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class FileManager : public QThread
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{
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Q_OBJECT
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public:
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FileManager(QObject *parent = 0);
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virtual ~FileManager();
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inline void setMetaInfo(const MetaInfo &info) { metaInfo = info; }
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inline void setDestinationFolder(const QString &directory) { destinationPath = directory; }
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int read(int pieceIndex, int offset, int length);
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void write(int pieceIndex, int offset, const QByteArray &data);
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void verifyPiece(int pieceIndex);
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inline qint64 totalSize() const { return totalLength; }
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inline int pieceCount() const { return numPieces; }
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int pieceLengthAt(int pieceIndex) const;
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QBitArray completedPieces() const;
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void setCompletedPieces(const QBitArray &pieces);
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QString errorString() const;
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public slots:
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void startDataVerification();
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signals:
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void dataRead(int id, int pieceIndex, int offset, const QByteArray &data);
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void error();
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void verificationProgress(int percent);
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void verificationDone();
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void pieceVerified(int pieceIndex, bool verified);
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protected:
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void run() Q_DECL_OVERRIDE;
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private slots:
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bool verifySinglePiece(int pieceIndex);
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void wakeUp();
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private:
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bool generateFiles();
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QByteArray readBlock(int pieceIndex, int offset, int length);
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bool writeBlock(int pieceIndex, int offset, const QByteArray &data);
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void verifyFileContents();
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struct WriteRequest {
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int pieceIndex;
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int offset;
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QByteArray data;
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};
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struct ReadRequest {
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int pieceIndex;
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int offset;
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int length;
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int id;
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};
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QString errString;
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QString destinationPath;
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MetaInfo metaInfo;
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QList<QFile *> files;
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QList<QByteArray> sha1s;
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QBitArray verifiedPieces;
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bool newFile;
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int pieceLength;
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qint64 totalLength;
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int numPieces;
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int readId;
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bool startVerification;
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bool quit;
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bool wokeUp;
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QList<WriteRequest> writeRequests;
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QList<ReadRequest> readRequests;
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QList<int> pendingVerificationRequests;
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QList<int> newPendingVerificationRequests;
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QList<qint64> fileSizes;
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mutable QMutex mutex;
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mutable QWaitCondition cond;
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};
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#endif
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