38be0d1383
This is the beginning of revision history for this module. If you want to look at revision history older than this, please refer to the Qt Git wiki for how to use Git history grafting. At the time of writing, this wiki is located here: http://qt.gitorious.org/qt/pages/GitIntroductionWithQt If you have already performed the grafting and you don't see any history beyond this commit, try running "git log" with the "--follow" argument. Branched from the monolithic repo, Qt master branch, at commit 896db169ea224deb96c59ce8af800d019de63f12
144 lines
4.3 KiB
C++
144 lines
4.3 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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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 Nokia Corporation and its Subsidiary(-ies) nor
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** the names of its contributors may be used to endorse or promote
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** products derived from this software without specific prior written
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** permission.
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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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** $QT_END_LICENSE$
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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();
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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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