diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/corelib/arch/qatomic_armv5.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/corelib/arch/qatomic_armv5.h b/src/corelib/arch/qatomic_armv5.h index 6939650c54..253b9263de 100644 --- a/src/corelib/arch/qatomic_armv5.h +++ b/src/corelib/arch/qatomic_armv5.h @@ -54,6 +54,7 @@ QT_END_NAMESPACE #pragma qt_sync_stop_processing #endif +#define Q_ATOMIC_INT32_IS_SUPPORTED #define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_NOT_NATIVE #define Q_ATOMIC_INT_TEST_AND_SET_IS_NOT_NATIVE #define Q_ATOMIC_INT_FETCH_AND_STORE_IS_ALWAYS_NATIVE @@ -98,6 +99,7 @@ template <int size> struct QBasicAtomicOps: QGenericAtomicOps<QBasicAtomicOps<si static Q_DECL_CONSTEXPR bool isTestAndSetNative() Q_DECL_NOTHROW { return false; } static Q_DECL_CONSTEXPR bool isTestAndSetWaitFree() Q_DECL_NOTHROW { return false; } template <typename T> static bool testAndSetRelaxed(T &_q_value, T expectedValue, T newValue) Q_DECL_NOTHROW; + template <typename T> static bool testAndSetRelaxed(T &_q_value, T expectedValue, T newValue, T *currentValue) Q_DECL_NOTHROW; template <typename T> static T fetchAndStoreRelaxed(T &_q_value, T newValue) Q_DECL_NOTHROW; template <typename T> static T fetchAndAddRelaxed(T &_q_value, typename QAtomicAdditiveType<T>::AdditiveT valueToAdd) Q_DECL_NOTHROW; @@ -133,6 +135,18 @@ bool QBasicAtomicOps<4>::deref(T &_q_value) Q_DECL_NOTHROW } template<> template <typename T> inline +bool QBasicAtomicOps<4>::testAndSetRelaxed(T &_q_value, T expectedValue, T newValue) Q_DECL_NOTHROW +{ + T originalValue; + do { + originalValue = _q_value; + if (originalValue != expectedValue) + return false; + } while (_q_cmpxchg(expectedValue, newValue, &_q_value) != 0); + return true; +} + +template<> template <typename T> inline bool QBasicAtomicOps<4>::testAndSetRelaxed(T &_q_value, T expectedValue, T newValue, T *currentValue) Q_DECL_NOTHROW { T originalValue; |