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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the tools applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef VIRTUALSERIALPORT_H
#define VIRTUALSERIALPORT_H
#include <QtCore/QIODevice>
#include <QtCore/QString>
#include <QtCore/QMutex>
QT_BEGIN_NAMESPACE
class QWaitCondition;
QT_END_NAMESPACE
#include "symbianutils_global.h"
namespace SymbianUtils {
class VirtualSerialDevicePrivate;
class SYMBIANUTILS_EXPORT VirtualSerialDevice : public QIODevice
{
Q_OBJECT
public:
explicit VirtualSerialDevice(const QString &name, QObject *parent = 0);
~VirtualSerialDevice();
bool open(OpenMode mode);
void close();
const QString &getPortName() const;
void flush();
qint64 bytesAvailable() const;
bool isSequential() const;
bool waitForBytesWritten(int msecs);
bool waitForReadyRead(int msecs);
protected:
qint64 readData(char *data, qint64 maxSize);
qint64 writeData(const char *data, qint64 maxSize);
private:
Q_DISABLE_COPY(VirtualSerialDevice)
void platInit();
void platClose();
void emitBytesWrittenIfNeeded(QMutexLocker &locker, qint64 len);
private:
QString portName;
mutable QMutex lock;
QList<QByteArray> pendingWrites;
bool emittingBytesWritten;
QWaitCondition* waiterForBytesWritten;
VirtualSerialDevicePrivate *d;
// Platform-specific stuff
#ifdef Q_OS_WIN
private:
qint64 writeNextBuffer(QMutexLocker &locker);
void doWriteCompleted(QMutexLocker &locker);
private slots:
void writeCompleted();
void commEventOccurred();
#endif
#ifdef Q_OS_UNIX
private:
bool tryWrite(const char *data, qint64 maxSize, qint64 &bytesWritten);
enum FlushPendingOption {
NothingSpecial = 0,
StopAfterWritingOneBuffer = 1,
EmitBytesWrittenAsync = 2, // Needed so we don't emit bytesWritten signal directly from writeBytes
};
Q_DECLARE_FLAGS(FlushPendingOptions, FlushPendingOption)
bool tryFlushPendingBuffers(QMutexLocker& locker, FlushPendingOptions flags = NothingSpecial);
private slots:
void writeHasUnblocked(int fileHandle);
signals:
void AsyncCall_emitBytesWrittenIfNeeded(qint64 len);
#endif
};
} // namespace SymbianUtils
#endif // VIRTUALSERIALPORT_H
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