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40 
41 #ifndef QATOMIC_BOOTSTRAP_H
42 #define QATOMIC_BOOTSTRAP_H
43 
44 #include <QtCore/qgenericatomic.h>
45 
46 QT_BEGIN_NAMESPACE
47 
48 #if 0
49 // silence syncqt warnings
50 QT_END_NAMESPACE
51 #pragma qt_sync_skip_header_check
52 #pragma qt_sync_stop_processing
53 #endif
54 
55 template <typename T> struct QAtomicOps: QGenericAtomicOps<QAtomicOps<T> >
56 {
57     typedef T Type;
58 
refQAtomicOps59     static bool ref(T &_q_value) noexcept
60     {
61         return ++_q_value != 0;
62     }
derefQAtomicOps63     static bool deref(T &_q_value) noexcept
64     {
65         return --_q_value != 0;
66     }
67 
68     static bool testAndSetRelaxed(T &_q_value, T expectedValue, T newValue, T *currentValue = nullptr) noexcept
69     {
70         if (currentValue)
71             *currentValue = _q_value;
72         if (_q_value == expectedValue) {
73             _q_value = newValue;
74             return true;
75         }
76         return false;
77     }
78 
fetchAndStoreRelaxedQAtomicOps79     static T fetchAndStoreRelaxed(T &_q_value, T newValue) noexcept
80     {
81         T tmp = _q_value;
82         _q_value = newValue;
83         return tmp;
84     }
85 
86     template <typename AdditiveType> static
fetchAndAddRelaxedQAtomicOps87     T fetchAndAddRelaxed(T &_q_value, AdditiveType valueToAdd) noexcept
88     {
89         T returnValue = _q_value;
90         _q_value += valueToAdd;
91         return returnValue;
92     }
93 };
94 
95 QT_END_NAMESPACE
96 
97 #endif // QATOMIC_BOOTSTRAP_H
98