Merge remote-tracking branch 'upstream/4.8'

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diff --git a/tools/runonphone/symbianutils/virtualserialdevice.h b/tools/runonphone/symbianutils/virtualserialdevice.h
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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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** 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.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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