1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2017 Intel Corporation. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the QtCore module of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:LGPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. For further 15 ** information use the contact form at https://www.qt.io/contact-us. 16 ** 17 ** GNU Lesser General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU Lesser 19 ** General Public License version 3 as published by the Free Software 20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the 21 ** packaging of this file. Please review the following information to 22 ** ensure the GNU Lesser General Public License version 3 requirements 23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. 24 ** 25 ** GNU General Public License Usage 26 ** Alternatively, this file may be used under the terms of the GNU 27 ** General Public License version 2.0 or (at your option) the GNU General 28 ** Public license version 3 or any later version approved by the KDE Free 29 ** Qt Foundation. The licenses are as published by the Free Software 30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 31 ** included in the packaging of this file. Please review the following 32 ** information to ensure the GNU General Public License requirements will 33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and 34 ** https://www.gnu.org/licenses/gpl-3.0.html. 35 ** 36 ** $QT_END_LICENSE$ 37 ** 38 ****************************************************************************/ 39 40 #ifndef QRANDOM_P_H 41 #define QRANDOM_P_H 42 43 // 44 // W A R N I N G 45 // ------------- 46 // 47 // This file is not part of the Qt API. It exists purely as an 48 // implementation detail. This header file may change from version to 49 // version without notice, or even be removed. 50 // 51 // We mean it. 52 // 53 54 #include "qglobal_p.h" 55 #include <private/qsimd_p.h> 56 57 QT_BEGIN_NAMESPACE 58 59 enum QRandomGeneratorControl { 60 UseSystemRNG = 1, 61 SkipSystemRNG = 2, 62 SkipHWRNG = 4, 63 SetRandomData = 8, 64 65 // 28 bits 66 RandomDataMask = 0xfffffff0 67 }; 68 69 enum RNGType { 70 SystemRNG = 0, 71 MersenneTwister = 1 72 }; 73 74 #if defined(QT_BUILD_INTERNAL) && defined(QT_BUILD_CORE_LIB) 75 Q_CORE_EXPORT QBasicAtomicInteger<uint> qt_randomdevice_control = Q_BASIC_ATOMIC_INITIALIZER(0U); 76 #elif defined(QT_BUILD_INTERNAL) 77 extern Q_CORE_EXPORT QBasicAtomicInteger<uint> qt_randomdevice_control; 78 #else 79 static const struct { loadAcquire__anonfafcc427010880 uint loadAcquire() const { return 0; } 81 } qt_randomdevice_control; 82 #endif 83 84 85 86 QT_END_NAMESPACE 87 88 #endif // QRANDOM_P_H 89