path: root/qtinterface/qt4/Qt/qatomic_symbian.h

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#ifndef QATOMIC_SYMBIAN_H
#define QATOMIC_SYMBIAN_H

#include <qglobal.h>
#include <e32std.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Core)

#define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_SOMETIMES_NATIVE

inline bool QBasicAtomicInt::isReferenceCountingWaitFree()
{ return false; }

#define Q_ATOMIC_INT_TEST_AND_SET_IS_SOMETIMES_NATIVE

inline bool QBasicAtomicInt::isTestAndSetWaitFree()
{ return false; }

#define Q_ATOMIC_INT_FETCH_AND_STORE_IS_SOMETIMES_NATIVE

inline bool QBasicAtomicInt::isFetchAndStoreWaitFree()
{ return false; }

#define Q_ATOMIC_INT_FETCH_AND_ADD_IS_SOMETIMES_NATIVE

inline bool QBasicAtomicInt::isFetchAndAddWaitFree()
{ return false; }

#define Q_ATOMIC_POINTER_TEST_AND_SET_IS_SOMETIMES_NATIVE

Q_CORE_EXPORT bool QBasicAtomicPointer_isTestAndSetNative();
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetNative()
{ return QBasicAtomicPointer_isTestAndSetNative(); }
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetWaitFree()
{ return false; }

#define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_SOMETIMES_NATIVE

Q_CORE_EXPORT bool QBasicAtomicPointer_isFetchAndStoreNative();
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreNative()
{ return QBasicAtomicPointer_isFetchAndStoreNative(); }
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreWaitFree()
{ return false; }

#define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_SOMETIMES_NATIVE

Q_CORE_EXPORT bool QBasicAtomicPointer_isFetchAndAddNative();
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddNative()
{ return QBasicAtomicPointer_isFetchAndAddNative(); }
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddWaitFree()
{ return false; }

Q_CORE_EXPORT bool QBasicAtomicInt_testAndSetOrdered(volatile int *, int, int);
Q_CORE_EXPORT int QBasicAtomicInt_fetchAndStoreOrdered(volatile int *, int);
Q_CORE_EXPORT int QBasicAtomicInt_fetchAndAddOrdered(volatile int *, int);

Q_CORE_EXPORT bool QBasicAtomicPointer_testAndSetOrdered(void * volatile *, void *, void *);
Q_CORE_EXPORT void *QBasicAtomicPointer_fetchAndStoreOrdered(void * volatile *, void *);
Q_CORE_EXPORT void *QBasicAtomicPointer_fetchAndAddOrdered(void * volatile *, qptrdiff);

// Reference counting

//LockedInc and LockedDec are machine coded for ARMv6 (and future proof)
inline bool QBasicAtomicInt::ref()
{
    int original = User::LockedInc((TInt&)_q_value);
    return original != -1;
}

inline bool QBasicAtomicInt::deref()
{
    int original = User::LockedDec((TInt&)_q_value);
    return original != 1;
}

// Test and set for integers

inline bool QBasicAtomicInt::testAndSetOrdered(int expectedValue, int newValue)
{
    return QBasicAtomicInt_testAndSetOrdered(&_q_value, expectedValue, newValue);
}

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)
{
    return QBasicAtomicInt_fetchAndStoreOrdered(&_q_value, newValue);
}

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)
{
    return QBasicAtomicInt_fetchAndAddOrdered(&_q_value, valueToAdd);
}

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)
{
    union { T * volatile * typed; void * volatile * voidp; } pointer;
    pointer.typed = &_q_value;
    return QBasicAtomicPointer_testAndSetOrdered(pointer.voidp, expectedValue, newValue);
}

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)
{
    union { T * volatile * typed; void * volatile * voidp; } pointer;
    union { T *typed; void *voidp; } returnValue;
    pointer.typed = &_q_value;
    returnValue.voidp = QBasicAtomicPointer_fetchAndStoreOrdered(pointer.voidp, newValue);
    return returnValue.typed;
}

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)
{
    union { T * volatile *typed; void * volatile *voidp; } pointer;
    union { T *typed; void *voidp; } returnValue;
    pointer.typed = &_q_value;
    returnValue.voidp = QBasicAtomicPointer_fetchAndAddOrdered(pointer.voidp, valueToAdd * sizeof(T));
    return returnValue.typed;
}

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

QT_END_HEADER

#endif // QATOMIC_SYMBIAN_H