| /**************************************************************************** |
| ** |
| ** Copyright (C) 2019 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Marc Mutz <marc.mutz@kdab.com> |
| ** Contact: http://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtCore 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 |
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| ** |
| ** 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 |
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| ** packaging of this file. Please review the following information to |
| ** ensure the GNU Lesser General Public License version 3 requirements |
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| ** |
| ** 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 |
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| ** $QT_END_LICENSE$ |
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| ****************************************************************************/ |
| #ifndef QWAITCONDITION_P_H |
| #define QWAITCONDITION_P_H |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists for the convenience |
| // of qmutex.cpp, qmutex_unix.cpp, and qmutex_win.cpp. This header |
| // file may change from version to version without notice, or even be |
| // removed. |
| // |
| // We mean it. |
| // |
| |
| #include <QtCore/QWaitCondition> |
| #include <QtCore/QMutex> |
| #include <QtCore/QDeadlineTimer> |
| |
| #include <condition_variable> |
| #include <mutex> |
| |
| QT_BEGIN_NAMESPACE |
| |
| namespace QtPrivate |
| { |
| |
| #if defined(Q_OS_INTEGRITY) |
| |
| class condition_variable; |
| |
| class mutex : private QMutex |
| { |
| friend class QtPrivate::condition_variable; |
| public: |
| // all special member functions are ok! |
| // do not expose the (QMutex::Recursive) ctor |
| // don't use 'using QMutex::lock;' etc as those have the wrong noexcept |
| |
| void lock() { return QMutex::lock(); } |
| void unlock() { return QMutex::unlock(); } |
| bool try_lock() { return QMutex::tryLock(); } |
| }; |
| |
| class condition_variable : private QWaitCondition |
| { |
| public: |
| // all special member functions are ok! |
| |
| void notify_one() { QWaitCondition::wakeOne(); } |
| void notify_all() { QWaitCondition::wakeAll(); } |
| |
| void wait(std::unique_lock<QtPrivate::mutex> &lock) { QWaitCondition::wait(lock.mutex()); } |
| template <class Predicate> |
| void wait(std::unique_lock<QtPrivate::mutex> &lock, Predicate p) |
| { |
| while (!p()) |
| wait(lock); |
| } |
| |
| template <typename Rep, typename Period> |
| std::cv_status wait_for(std::unique_lock<QtPrivate::mutex> &lock, |
| const std::chrono::duration<Rep, Period> &d) |
| { |
| return QWaitCondition::wait(lock.mutex(), QDeadlineTimer{d}) |
| ? std::cv_status::no_timeout |
| : std::cv_status::timeout; |
| } |
| template <typename Rep, typename Period, typename Predicate> |
| bool wait_for(std::unique_lock<QtPrivate::mutex> &lock, |
| const std::chrono::duration<Rep, Period> &d, Predicate p) |
| { |
| const auto timer = QDeadlineTimer{d}; |
| while (!p()) { |
| if (!QWaitCondition::wait(lock.mutex(), timer)) |
| return p(); |
| } |
| return true; |
| } |
| |
| template <typename Clock, typename Duration> |
| std::cv_status wait_until(std::unique_lock<QtPrivate::mutex> &lock, |
| const std::chrono::time_point<Clock, Duration> &t) |
| { |
| return QWaitCondition::wait(lock.mutex(), QDeadlineTimer{t}) |
| ? std::cv_status::no_timeout |
| : std::cv_status::timeout; |
| } |
| |
| template <typename Clock, typename Duration, typename Predicate> |
| bool wait_until(std::unique_lock<QtPrivate::mutex> &lock, |
| const std::chrono::time_point<Clock, Duration> &t, Predicate p) |
| { |
| const auto timer = QDeadlineTimer{t}; |
| while (!p()) { |
| if (!QWaitCondition::wait(lock.mutex(), timer)) |
| return p(); |
| } |
| return true; |
| } |
| |
| }; |
| |
| #else // Integrity |
| |
| using mutex = std::mutex; |
| using condition_variable = std::condition_variable; |
| |
| #endif // Integrity |
| |
| } // namespace QtPrivate |
| |
| QT_END_NAMESPACE |
| |
| #endif /* QWAITCONDITION_P_H */ |