source: trunk/src/corelib/concurrent/qfuture.h@ 591

/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation ([email protected])
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** 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.
**
** 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at [email protected].
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QFUTURE_H
#define QFUTURE_H

#include <QtCore/qglobal.h>

#ifndef QT_NO_QFUTURE

#include <QtCore/qfutureinterface.h>
#include <QtCore/qstring.h>
#include <QtCore/qtconcurrentcompilertest.h>

QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE

QT_MODULE(Core)

template <typename T>
class QFutureWatcher;
template <>
class QFutureWatcher<void>;

template <typename T>
class QFuture
{
public:
    QFuture()
        : d(QFutureInterface<T>::canceledResult())
    { }
    explicit QFuture(QFutureInterface<T> *p) // internal
        : d(*p)
    { }
    QFuture(const QFuture &other)
        : d(other.d)
    { }
    ~QFuture()
    { }

    inline QFuture &operator=(const QFuture &other);
    bool operator==(const QFuture &other) const { return (d == other.d); }
    bool operator!=(const QFuture &other) const { return (d != other.d); }

    void cancel() { d.cancel(); }
    bool isCanceled() const { return d.isCanceled(); }

    void setPaused(bool paused) { d.setPaused(paused); }
    bool isPaused() const { return d.isPaused(); }
    void pause() { setPaused(true); }
    void resume() { setPaused(false); }
    void togglePaused() { d.togglePaused(); }