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/****************************************************************************
**
** 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
** 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 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 */
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