qrandom_p.h

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// Copyright (C) 2017 Intel Corporation.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QRANDOM_P_H
#define QRANDOM_P_H
 
//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
 
#include "qglobal_p.h"
#include <qrandom.h>
#include <private/qsimd_p.h>
 
QT_BEGIN_NAMESPACE
 
enum QRandomGeneratorControl {
    UseSystemRNG = 1,
    SkipSystemRNG = 2,
    SkipHWRNG = 4,
    SetRandomData = 8,
 
    // 28 bits
    RandomDataMask = 0xfffffff0
};
 
enum RNGType {
    SystemRNG = 0,
    MersenneTwister = 1
};
 
#if defined(QT_BUILD_INTERNAL)
extern Q_CORE_EXPORT QBasicAtomicInteger<uint> qt_randomdevice_control;
#else
static const struct
{
    uint loadAcquire() const { return 0; }
} qt_randomdevice_control;
#endif
 
QRandomGenerator::InitialRandomData qt_initial_random_value() noexcept;
 
QT_END_NAMESPACE
 
#endif // QRANDOM_P_H