130 lines
4.3 KiB
C++
130 lines
4.3 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the QtConcurrent module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 3 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL3 included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 3 requirements
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** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 2.0 or (at your option) the GNU General
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** Public license version 3 or any later version approved by the KDE Free
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** Qt Foundation. The licenses are as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-2.0.html and
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** https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QTCONCURRENT_RUN_H
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#define QTCONCURRENT_RUN_H
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#include <QtConcurrent/qtconcurrentcompilertest.h>
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#if !defined(QT_NO_CONCURRENT) || defined(Q_CLANG_QDOC)
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#include <QtConcurrent/qtconcurrentrunbase.h>
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#include <QtConcurrent/qtconcurrentstoredfunctioncall.h>
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QT_BEGIN_NAMESPACE
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#ifdef Q_CLANG_QDOC
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typedef int Function;
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namespace QtConcurrent {
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template <typename T>
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QFuture<T> run(Function function, ...);
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template <typename T>
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QFuture<T> run(QThreadPool *pool, Function function, ...);
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template <typename T>
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QFuture<T> runWithPromise(Function function, ...);
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template <typename T>
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QFuture<T> runWithPromise(QThreadPool *pool, Function function, ...);
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} // namespace QtConcurrent
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#else
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namespace QtConcurrent {
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template <class Function, class ...Args>
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[[nodiscard]]
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auto run(QThreadPool *pool, Function &&f, Args &&...args)
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{
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DecayedTuple<Function, Args...> tuple { std::forward<Function>(f),
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std::forward<Args>(args)... };
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return TaskResolver<std::decay_t<Function>, std::decay_t<Args>...>::run(
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std::move(tuple), TaskStartParameters { pool });
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}
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template <class Function, class ...Args>
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[[nodiscard]]
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auto run(QThreadPool *pool, std::reference_wrapper<const Function> &&functionWrapper,
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Args &&...args)
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{
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return run(pool, std::forward<const Function>(functionWrapper.get()),
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std::forward<Args>(args)...);
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}
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template <class Function, class ...Args>
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[[nodiscard]]
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auto run(Function &&f, Args &&...args)
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{
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return run(QThreadPool::globalInstance(), std::forward<Function>(f),
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std::forward<Args>(args)...);
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}
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// overload with a Promise Type hint, takes thread pool
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template <class PromiseType, class Function, class ...Args>
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[[nodiscard]]
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auto run(QThreadPool *pool, Function &&f, Args &&...args)
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{
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return (new StoredFunctionCallWithPromise<Function, PromiseType, Args...>(
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std::forward<Function>(f), std::forward<Args>(args)...))->start(pool);
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}
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// overload with a Promise Type hint, uses global thread pool
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template <class PromiseType, class Function, class ...Args>
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[[nodiscard]]
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auto run(Function &&f, Args &&...args)
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{
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return run<PromiseType>(QThreadPool::globalInstance(), std::forward<Function>(f),
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std::forward<Args>(args)...);
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}
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} //namespace QtConcurrent
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#endif // Q_CLANG_QDOC
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QT_END_NAMESPACE
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#endif // QT_NO_CONCURRENT
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#endif
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