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** GNU General Public License Usage | |
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****************************************************************************/ | |
#ifndef QATOMIC_VXWORKS_H | |
#define QATOMIC_VXWORKS_H | |
QT_BEGIN_HEADER | |
#if defined(__ppc) | |
# include <QtCore/qatomic_powerpc.h> | |
#else // generic implementation with taskLock() | |
#if 0 | |
// we don't want to include the system header here for two function prototypes, | |
// because it pulls in a _lot_ of stuff that pollutes the global namespace | |
# include <vxWorksCommon.h> | |
# include <taskLib.h> | |
#else | |
extern "C" int taskLock(); | |
extern "C" int taskUnlock(); | |
#endif | |
QT_BEGIN_NAMESPACE | |
#define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_NOT_NATIVE | |
inline bool QBasicAtomicInt::isReferenceCountingNative() | |
{ return false; } | |
inline bool QBasicAtomicInt::isReferenceCountingWaitFree() | |
{ return false; } | |
#define Q_ATOMIC_INT_TEST_AND_SET_IS_NOT_NATIVE | |
inline bool QBasicAtomicInt::isTestAndSetNative() | |
{ return false; } | |
inline bool QBasicAtomicInt::isTestAndSetWaitFree() | |
{ return false; } | |
#define Q_ATOMIC_INT_FETCH_AND_STORE_IS_NOT_NATIVE | |
inline bool QBasicAtomicInt::isFetchAndStoreNative() | |
{ return false; } | |
inline bool QBasicAtomicInt::isFetchAndStoreWaitFree() | |
{ return false; } | |
#define Q_ATOMIC_INT_FETCH_AND_ADD_IS_NOT_NATIVE | |
inline bool QBasicAtomicInt::isFetchAndAddNative() | |
{ return false; } | |
inline bool QBasicAtomicInt::isFetchAndAddWaitFree() | |
{ return false; } | |
#define Q_ATOMIC_POINTER_TEST_AND_SET_IS_NOT_NATIVE | |
template <typename T> | |
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetNative() | |
{ return false; } | |
template <typename T> | |
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetWaitFree() | |
{ return false; } | |
#define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_NOT_NATIVE | |
template <typename T> | |
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreNative() | |
{ return false; } | |
template <typename T> | |
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreWaitFree() | |
{ return false; } | |
#define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_NOT_NATIVE | |
template <typename T> | |
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddNative() | |
{ return false; } | |
template <typename T> | |
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddWaitFree() | |
{ return false; } | |
// Reference counting | |
inline bool QBasicAtomicInt::ref() | |
{ | |
taskLock(); | |
bool ret = (++_q_value != 0); | |
taskUnlock(); | |
return ret; | |
} | |
inline bool QBasicAtomicInt::deref() | |
{ | |
taskLock(); | |
bool ret = (--_q_value != 0); | |
taskUnlock(); | |
return ret; | |
} | |
// Test-and-set for integers | |
inline bool QBasicAtomicInt::testAndSetOrdered(int expectedValue, int newValue) | |
{ | |
taskLock(); | |
if (_q_value == expectedValue) { | |
_q_value = newValue; | |
taskUnlock(); | |
return true; | |
} | |
taskUnlock(); | |
return false; | |
} | |
inline bool QBasicAtomicInt::testAndSetRelaxed(int expectedValue, int newValue) | |
{ | |
return testAndSetOrdered(expectedValue, newValue); | |
} | |
inline bool QBasicAtomicInt::testAndSetAcquire(int expectedValue, int newValue) | |
{ | |
return testAndSetOrdered(expectedValue, newValue); | |
} | |
inline bool QBasicAtomicInt::testAndSetRelease(int expectedValue, int newValue) | |
{ | |
return testAndSetOrdered(expectedValue, newValue); | |
} | |
// Fetch-and-store for integers | |
inline int QBasicAtomicInt::fetchAndStoreOrdered(int newValue) | |
{ | |
taskLock(); | |
int returnValue = _q_value; | |
_q_value = newValue; | |
taskUnlock(); | |
return returnValue; | |
} | |
inline int QBasicAtomicInt::fetchAndStoreRelaxed(int newValue) | |
{ | |
return fetchAndStoreOrdered(newValue); | |
} | |
inline int QBasicAtomicInt::fetchAndStoreAcquire(int newValue) | |
{ | |
return fetchAndStoreOrdered(newValue); | |
} | |
inline int QBasicAtomicInt::fetchAndStoreRelease(int newValue) | |
{ | |
return fetchAndStoreOrdered(newValue); | |
} | |
// Fetch-and-add for integers | |
inline int QBasicAtomicInt::fetchAndAddOrdered(int valueToAdd) | |
{ | |
taskLock(); | |
int originalValue = _q_value; | |
_q_value += valueToAdd; | |
taskUnlock(); | |
return originalValue; | |
} | |
inline int QBasicAtomicInt::fetchAndAddRelaxed(int valueToAdd) | |
{ | |
return fetchAndAddOrdered(valueToAdd); | |
} | |
inline int QBasicAtomicInt::fetchAndAddAcquire(int valueToAdd) | |
{ | |
return fetchAndAddOrdered(valueToAdd); | |
} | |
inline int QBasicAtomicInt::fetchAndAddRelease(int valueToAdd) | |
{ | |
return fetchAndAddOrdered(valueToAdd); | |
} | |
// Test and set for pointers | |
template <typename T> | |
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetOrdered(T *expectedValue, T *newValue) | |
{ | |
taskLock(); | |
if (_q_value == expectedValue) { | |
_q_value = newValue; | |
taskUnlock(); | |
return true; | |
} | |
taskUnlock(); | |
return false; | |
} | |
template <typename T> | |
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelaxed(T *expectedValue, T *newValue) | |
{ | |
return testAndSetOrdered(expectedValue, newValue); | |
} | |
template <typename T> | |
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetAcquire(T *expectedValue, T *newValue) | |
{ | |
return testAndSetOrdered(expectedValue, newValue); | |
} | |
template <typename T> | |
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelease(T *expectedValue, T *newValue) | |
{ | |
return testAndSetOrdered(expectedValue, newValue); | |
} | |
// Fetch and store for pointers | |
template <typename T> | |
Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreOrdered(T *newValue) | |
{ | |
taskLock(); | |
T *returnValue = (_q_value); | |
_q_value = newValue; | |
taskUnlock(); | |
return returnValue; | |
} | |
template <typename T> | |
Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreRelaxed(T *newValue) | |
{ | |
return fetchAndStoreOrdered(newValue); | |
} | |
template <typename T> | |
Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreAcquire(T *newValue) | |
{ | |
return fetchAndStoreOrdered(newValue); | |
} | |
template <typename T> | |
Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreRelease(T *newValue) | |
{ | |
return fetchAndStoreOrdered(newValue); | |
} | |
// Fetch and add for pointers | |
template <typename T> | |
Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddOrdered(qptrdiff valueToAdd) | |
{ | |
taskLock(); | |
T *returnValue = (_q_value); | |
_q_value += valueToAdd; | |
taskUnlock(); | |
return returnValue; | |
} | |
template <typename T> | |
Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelaxed(qptrdiff valueToAdd) | |
{ | |
return fetchAndAddOrdered(valueToAdd); | |
} | |
template <typename T> | |
Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddAcquire(qptrdiff valueToAdd) | |
{ | |
return fetchAndAddOrdered(valueToAdd); | |
} | |
template <typename T> | |
Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelease(qptrdiff valueToAdd) | |
{ | |
return fetchAndAddOrdered(valueToAdd); | |
} | |
QT_END_NAMESPACE | |
#endif // generic implementation with taskLock() | |
QT_END_HEADER | |
#endif // QATOMIC_VXWORKS_H |