| 1 | // Copyright (C) 2019 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Marc Mutz <marc.mutz@kdab.com> |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 3 | #ifndef QWAITCONDITION_P_H |
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| 4 | #define QWAITCONDITION_P_H |
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| 5 | |
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| 6 | // |
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| 7 | // W A R N I N G |
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| 8 | // ------------- |
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| 9 | // |
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| 10 | // This file is not part of the Qt API. It exists for the convenience of |
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| 11 | // qmutex.cpp and qmutex_unix.cpp. This header file may change from version to |
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| 12 | // version without notice, or even be removed. |
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| 13 | // |
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| 14 | // We mean it. |
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| 15 | // |
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| 16 | |
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| 17 | #include <QtCore/QWaitCondition> |
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| 18 | #include <QtCore/QMutex> |
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| 19 | #include <QtCore/QDeadlineTimer> |
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| 20 | #include <QtCore/private/qglobal_p.h> |
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| 21 | |
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| 22 | #include <condition_variable> |
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| 23 | #include <mutex> |
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| 24 | |
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| 25 | QT_BEGIN_NAMESPACE |
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| 26 | |
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| 27 | namespace QtPrivate { |
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| 28 | // Ideal alignment for mutex and condition_variable: it's the hardware |
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| 29 | // interference size (size of a cache line) if the types are likely to contain |
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| 30 | // the actual data structures, otherwise just that of a pointer. |
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| 31 | inline constexpr quintptr IdealMutexAlignment = |
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| 32 | sizeof(std::mutex) > sizeof(void *) && |
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| 33 | sizeof(std::condition_variable) > sizeof(void *) ? |
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| 34 | 64 : alignof(void*); |
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| 35 | |
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| 36 | } // namespace QtPrivate |
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| 37 | |
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| 38 | QT_END_NAMESPACE |
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| 39 | |
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| 40 | #endif /* QWAITCONDITION_P_H */ |
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| 41 | |
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