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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (info@qt.nokia.com)
**
**
** GNU Lesser General Public License Usage
**
** 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.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
** If you have questions regarding the use of this file, please contact
** Nokia at info@qt.nokia.com.
**
**************************************************************************/
#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:
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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