| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtConcurrent module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
| ** accordance with the commercial license agreement provided with the |
| ** Software or, alternatively, in accordance with the terms contained in |
| ** a written agreement between you and The Qt Company. For licensing terms |
| ** and conditions see https://www.qt.io/terms-conditions. For further |
| ** information use the contact form at https://www.qt.io/contact-us. |
| ** |
| ** GNU Lesser General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU Lesser |
| ** General Public License version 3 as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.LGPL3 included in the |
| ** packaging of this file. Please review the following information to |
| ** ensure the GNU Lesser General Public License version 3 requirements |
| ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
| ** Qt Foundation. The licenses are as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
| ** be met: https://www.gnu.org/licenses/gpl-2.0.html and |
| ** https://www.gnu.org/licenses/gpl-3.0.html. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #ifndef QTCONCURRENT_RUNBASE_H |
| #define QTCONCURRENT_RUNBASE_H |
| |
| #include <QtConcurrent/qtconcurrent_global.h> |
| |
| #ifndef QT_NO_CONCURRENT |
| |
| #include <QtCore/qfuture.h> |
| #include <QtCore/qrunnable.h> |
| #include <QtCore/qthreadpool.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| |
| #ifndef Q_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() |
| { |
| return start(QThreadPool::globalInstance()); |
| } |
| |
| QFuture<T> start(QThreadPool *pool) |
| { |
| this->setThreadPool(pool); |
| this->setRunnable(this); |
| this->reportStarted(); |
| QFuture<T> theFuture = this->future(); |
| pool->start(this, /*m_priority*/ 0); |
| return theFuture; |
| } |
| |
| void run() override {} |
| virtual void runFunctor() = 0; |
| }; |
| |
| template <typename T> |
| class RunFunctionTask : public RunFunctionTaskBase<T> |
| { |
| public: |
| void run() override |
| { |
| if (this->isCanceled()) { |
| this->reportFinished(); |
| return; |
| } |
| #ifndef QT_NO_EXCEPTIONS |
| try { |
| #endif |
| this->runFunctor(); |
| #ifndef QT_NO_EXCEPTIONS |
| } catch (QException &e) { |
| QFutureInterface<T>::reportException(e); |
| } catch (...) { |
| QFutureInterface<T>::reportException(QUnhandledException()); |
| } |
| #endif |
| |
| this->reportResult(result); |
| this->reportFinished(); |
| } |
| T result; |
| }; |
| |
| template <> |
| class RunFunctionTask<void> : public RunFunctionTaskBase<void> |
| { |
| public: |
| void run() override |
| { |
| if (this->isCanceled()) { |
| this->reportFinished(); |
| return; |
| } |
| #ifndef QT_NO_EXCEPTIONS |
| try { |
| #endif |
| this->runFunctor(); |
| #ifndef QT_NO_EXCEPTIONS |
| } catch (QException &e) { |
| QFutureInterface<void>::reportException(e); |
| } catch (...) { |
| QFutureInterface<void>::reportException(QUnhandledException()); |
| } |
| #endif |
| this->reportFinished(); |
| } |
| }; |
| |
| } //namespace QtConcurrent |
| |
| #endif //Q_QDOC |
| |
| QT_END_NAMESPACE |
| |
| #endif // QT_NO_CONCURRENT |
| |
| #endif |