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-/****************************************************************************
-**
-** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
-** All rights reserved.
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** 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 qt-info@nokia.com.
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#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(); }
-
- bool isStarted() const { return d.isStarted(); }
- bool isFinished() const { return d.isFinished(); }
- bool isRunning() const { return d.isRunning(); }
-
- int resultCount() const { return d.resultCount(); }
- int progressValue() const { return d.progressValue(); }
- int progressMinimum() const { return d.progressMinimum(); }
- int progressMaximum() const { return d.progressMaximum(); }
- QString progressText() const { return d.progressText(); }
- void waitForFinished() { d.waitForFinished(); }
-
- inline T result() const;
- inline T resultAt(int index) const;
- bool isResultReadyAt(int resultIndex) const { return d.isResultReadyAt(resultIndex); }
-
- operator T() const { return result(); }
- QList<T> results() const { return d.results(); }
-
- class const_iterator
- {
- public:
- typedef std::bidirectional_iterator_tag iterator_category;
- typedef ptrdiff_t difference_type;
- typedef T value_type;
- typedef const T *pointer;
- typedef const T &reference;
-
- inline const_iterator() {}
- inline const_iterator(QFuture const * const _future, int _index) : future(_future), index(_index) {}
- inline const_iterator(const const_iterator &o) : future(o.future), index(o.index) {}
- inline const_iterator &operator=(const const_iterator &o)
- { future = o.future; index = o.index; return *this; }
- inline const T &operator*() const { return future->d.resultReference(index); }
- inline const T *operator->() const { return future->d.resultPointer(index); }
-
- inline bool operator!=(const const_iterator &other) const
- {
- if (index == -1 && other.index == -1) // comparing end != end?
- return false;
- if (other.index == -1)
- return (future->isRunning() || (index < future->resultCount()));
- return (index != other.index);
- }
-
- inline bool operator==(const const_iterator &o) const { return !operator!=(o); }
- inline const_iterator &operator++() { ++index; return *this; }
- inline const_iterator operator++(int) { const_iterator r = *this; ++index; return r; }
- inline const_iterator &operator--() { --index; return *this; }
- inline const_iterator operator--(int) { const_iterator r = *this; --index; return r; }
- inline const_iterator operator+(int j) const { return const_iterator(future, index + j); }
- inline const_iterator operator-(int j) const { return const_iterator(future, index - j); }
- inline const_iterator &operator+=(int j) { index += j; return *this; }
- inline const_iterator &operator-=(int j) { index -= j; return *this; }
- private:
- QFuture const * future;
- int index;
- };
- friend class const_iterator;
- typedef const_iterator ConstIterator;
-
- const_iterator begin() const { return const_iterator(this, 0); }
- const_iterator constBegin() const { return const_iterator(this, 0); }
- const_iterator end() const { return const_iterator(this, -1); }
- const_iterator constEnd() const { return const_iterator(this, -1); }
-
-private:
- friend class QFutureWatcher<T>;
-
-public: // Warning: the d pointer is not documented and is considered private.
- mutable QFutureInterface<T> d;
-};
-
-template <typename T>
-inline QFuture<T> &QFuture<T>::operator=(const QFuture<T> &other)
-{
- d = other.d;
- return *this;
-}
-
-template <typename T>
-inline T QFuture<T>::result() const
-{
- d.waitForResult(0);
- return d.resultReference(0);
-}
-
-template <typename T>
-inline T QFuture<T>::resultAt(int index) const
-{
- d.waitForResult(index);
- return d.resultReference(index);
-}
-
-template <typename T>
-inline QFuture<T> QFutureInterface<T>::future()
-{
- return QFuture<T>(this);
-}
-
-Q_DECLARE_SEQUENTIAL_ITERATOR(Future)
-
-template <>
-class QFuture<void>
-{
-public:
- QFuture()
- : d(QFutureInterface<void>::canceledResult())
- { }
- explicit QFuture(QFutureInterfaceBase *p) // internal
- : d(*p)
- { }
- QFuture(const QFuture &other)
- : d(other.d)
- { }
- ~QFuture()
- { }
-
- 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); }
-
-#if !defined(QT_NO_MEMBER_TEMPLATES) && !defined(Q_CC_XLC)
- template <typename T>
- QFuture(const QFuture<T> &other)
- : d(other.d)
- { }
-
- template <typename T>
- QFuture<void> &operator=(const QFuture<T> &other)
- {
- d = other.d;
- return *this;
- }
-#endif
-
- 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(); }
-
- bool isStarted() const { return d.isStarted(); }
- bool isFinished() const { return d.isFinished(); }
- bool isRunning() const { return d.isRunning(); }
-
- int resultCount() const { return d.resultCount(); }
- int progressValue() const { return d.progressValue(); }
- int progressMinimum() const { return d.progressMinimum(); }
- int progressMaximum() const { return d.progressMaximum(); }
- QString progressText() const { return d.progressText(); }
- void waitForFinished() { d.waitForFinished(); }
-
-private:
- friend class QFutureWatcher<void>;
-
-#ifdef QFUTURE_TEST
-public:
-#endif
- mutable QFutureInterfaceBase d;
-};
-
-inline QFuture<void> &QFuture<void>::operator=(const QFuture<void> &other)
-{
- d = other.d;
- return *this;
-}
-
-inline QFuture<void> QFutureInterface<void>::future()
-{
- return QFuture<void>(this);
-}
-
-template <typename T>
-QFuture<void> qToVoidFuture(const QFuture<T> &future)
-{
- return QFuture<void>(future.d);
-}
-
-QT_END_NAMESPACE
-QT_END_HEADER
-
-#endif // QT_NO_CONCURRENT
-
-#endif // QFUTURE_H
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