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Diffstat (limited to 'src/corelib/concurrent/qtconcurrentrunbase.h')
-rw-r--r-- | src/corelib/concurrent/qtconcurrentrunbase.h | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/src/corelib/concurrent/qtconcurrentrunbase.h b/src/corelib/concurrent/qtconcurrentrunbase.h new file mode 100644 index 0000000000..f26a3e3a30 --- /dev/null +++ b/src/corelib/concurrent/qtconcurrentrunbase.h @@ -0,0 +1,155 @@ +/**************************************************************************** +** +** 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 QtCore module 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 QTCONCURRENT_RUNBASE_H +#define QTCONCURRENT_RUNBASE_H + +#include <QtCore/qglobal.h> + +#ifndef QT_NO_CONCURRENT + +#include <QtCore/qfuture.h> +#include <QtCore/qrunnable.h> +#include <QtCore/qthreadpool.h> + +QT_BEGIN_HEADER +QT_BEGIN_NAMESPACE + +QT_MODULE(Core) + +#ifndef qdoc + +namespace QtConcurrent { + +template <typename T> +struct SelectSpecialization +{ + template <class Normal, class Void> + struct Type { typedef Normal type; }; +}; + +template <> +struct SelectSpecialization<void> +{ + template <class Normal, class Void> + struct Type { typedef Void type; }; +}; + +template <typename T> +class RunFunctionTaskBase : public QFutureInterface<T> , public QRunnable +{ +public: + QFuture<T> start() + { + this->setRunnable(this); + this->reportStarted(); + QFuture<T> future = this->future(); + QThreadPool::globalInstance()->start(this, /*m_priority*/ 0); + return future; + } + + void run() {} + virtual void runFunctor() = 0; +}; + +template <typename T> +class RunFunctionTask : public RunFunctionTaskBase<T> +{ +public: + void run() + { + if (this->isCanceled()) { + this->reportFinished(); + return; + } +#ifndef QT_NO_EXCEPTIONS + try { +#endif + this->runFunctor(); +#ifndef QT_NO_EXCEPTIONS + } catch (QtConcurrent::Exception &e) { + QFutureInterface<T>::reportException(e); + } catch (...) { + QFutureInterface<T>::reportException(QtConcurrent::UnhandledException()); + } +#endif + + this->reportResult(result); + this->reportFinished(); + } + T result; +}; + +template <> +class RunFunctionTask<void> : public RunFunctionTaskBase<void> +{ +public: + void run() + { + if (this->isCanceled()) { + this->reportFinished(); + return; + } +#ifndef QT_NO_EXCEPTIONS + try { +#endif + this->runFunctor(); +#ifndef QT_NO_EXCEPTIONS + } catch (QtConcurrent::Exception &e) { + QFutureInterface<void>::reportException(e); + } catch (...) { + QFutureInterface<void>::reportException(QtConcurrent::UnhandledException()); + } +#endif + this->reportFinished(); + } +}; + +} //namespace QtConcurrent + +#endif //qdoc + +QT_END_NAMESPACE +QT_END_HEADER + +#endif // QT_NO_CONCURRENT + +#endif |