00001 /**************************************************************************** 00002 ** 00003 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). 00004 ** All rights reserved. 00005 ** Contact: Nokia Corporation (qt-info@nokia.com) 00006 ** 00007 ** This file is part of the QtCore module of the Qt Toolkit. 00008 ** 00009 ** $QT_BEGIN_LICENSE:LGPL$ 00010 ** Commercial Usage 00011 ** Licensees holding valid Qt Commercial licenses may use this file in 00012 ** accordance with the Qt Commercial License Agreement provided with the 00013 ** Software or, alternatively, in accordance with the terms contained in 00014 ** a written agreement between you and Nokia. 00015 ** 00016 ** GNU Lesser General Public License Usage 00017 ** Alternatively, this file may be used under the terms of the GNU Lesser 00018 ** General Public License version 2.1 as published by the Free Software 00019 ** Foundation and appearing in the file LICENSE.LGPL included in the 00020 ** packaging of this file. Please review the following information to 00021 ** ensure the GNU Lesser General Public License version 2.1 requirements 00022 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. 00023 ** 00024 ** In addition, as a special exception, Nokia gives you certain additional 00025 ** rights. These rights are described in the Nokia Qt LGPL Exception 00026 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this module. 00027 ** 00028 ** GNU General Public License Usage 00029 ** Alternatively, this file may be used under the terms of the GNU 00030 ** General Public License version 3.0 as published by the Free Software 00031 ** Foundation and appearing in the file LICENSE.GPL included in the 00032 ** packaging of this file. Please review the following information to 00033 ** ensure the GNU General Public License version 3.0 requirements will be 00034 ** met: http://www.gnu.org/copyleft/gpl.html. 00035 ** 00036 ** If you have questions regarding the use of this file, please contact 00037 ** Nokia at qt-info@nokia.com. 00038 ** $QT_END_LICENSE$ 00039 ** 00040 ****************************************************************************/ 00041 00042 #ifndef QATOMIC_BOOTSTRAP_H 00043 #define QATOMIC_BOOTSTRAP_H 00044 00045 QT_BEGIN_HEADER 00046 00047 QT_BEGIN_NAMESPACE 00048 00049 inline bool QBasicAtomicInt::ref() 00050 { 00051 return ++_q_value != 0; 00052 } 00053 00054 inline bool QBasicAtomicInt::deref() 00055 { 00056 return --_q_value != 0; 00057 } 00058 00059 inline bool QBasicAtomicInt::testAndSetOrdered(int expectedValue, int newValue) 00060 { 00061 if (_q_value == expectedValue) { 00062 _q_value = newValue; 00063 return true; 00064 } 00065 return false; 00066 } 00067 00068 inline bool QBasicAtomicInt::testAndSetAcquire(int expectedValue, int newValue) 00069 { 00070 return testAndSetOrdered(expectedValue, newValue); 00071 } 00072 00073 inline bool QBasicAtomicInt::testAndSetRelease(int expectedValue, int newValue) 00074 { 00075 return testAndSetOrdered(expectedValue, newValue); 00076 } 00077 00078 inline int QBasicAtomicInt::fetchAndAddRelaxed(int valueToAdd) 00079 { 00080 int returnValue = _q_value; 00081 _q_value += valueToAdd; 00082 return returnValue; 00083 } 00084 00085 template <typename T> 00086 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetOrdered(T *expectedValue, T *newValue) 00087 { 00088 if (_q_value == expectedValue) { 00089 _q_value = newValue; 00090 return true; 00091 } 00092 return false; 00093 } 00094 00095 QT_END_NAMESPACE 00096 00097 QT_END_HEADER 00098 00099 #endif // QATOMIC_BOOTSTRAP_H