qatomic_bootstrap.h

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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