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#ifndef QATOMIC_H | |
#define QATOMIC_H | |
#include <QtCore/qglobal.h> | |
#include <QtCore/qbasicatomic.h> | |
QT_BEGIN_HEADER | |
QT_BEGIN_NAMESPACE | |
QT_MODULE(Core) | |
// High-level atomic integer operations | |
class Q_CORE_EXPORT QAtomicInt : public QBasicAtomicInt | |
{ | |
public: | |
inline QAtomicInt(int value = 0) | |
{ | |
#ifdef QT_ARCH_PARISC | |
this->_q_lock[0] = this->_q_lock[1] = this->_q_lock[2] = this->_q_lock[3] = -1; | |
#endif | |
_q_value = value; | |
} | |
inline QAtomicInt(const QAtomicInt &other) | |
{ | |
#ifdef QT_ARCH_PARISC | |
this->_q_lock[0] = this->_q_lock[1] = this->_q_lock[2] = this->_q_lock[3] = -1; | |
#endif | |
_q_value = other._q_value; | |
} | |
inline QAtomicInt &operator=(int value) | |
{ | |
(void) QBasicAtomicInt::operator=(value); | |
return *this; | |
} | |
inline QAtomicInt &operator=(const QAtomicInt &other) | |
{ | |
(void) QBasicAtomicInt::operator=(other); | |
return *this; | |
} | |
#ifdef qdoc | |
bool operator==(int value) const; | |
bool operator!=(int value) const; | |
bool operator!() const; | |
operator int() const; | |
static bool isReferenceCountingNative(); | |
static bool isReferenceCountingWaitFree(); | |
bool ref(); | |
bool deref(); | |
static bool isTestAndSetNative(); | |
static bool isTestAndSetWaitFree(); | |
bool testAndSetRelaxed(int expectedValue, int newValue); | |
bool testAndSetAcquire(int expectedValue, int newValue); | |
bool testAndSetRelease(int expectedValue, int newValue); | |
bool testAndSetOrdered(int expectedValue, int newValue); | |
static bool isFetchAndStoreNative(); | |
static bool isFetchAndStoreWaitFree(); | |
int fetchAndStoreRelaxed(int newValue); | |
int fetchAndStoreAcquire(int newValue); | |
int fetchAndStoreRelease(int newValue); | |
int fetchAndStoreOrdered(int newValue); | |
static bool isFetchAndAddNative(); | |
static bool isFetchAndAddWaitFree(); | |
int fetchAndAddRelaxed(int valueToAdd); | |
int fetchAndAddAcquire(int valueToAdd); | |
int fetchAndAddRelease(int valueToAdd); | |
int fetchAndAddOrdered(int valueToAdd); | |
#endif | |
}; | |
// High-level atomic pointer operations | |
template <typename T> | |
class QAtomicPointer : public QBasicAtomicPointer<T> | |
{ | |
public: | |
inline QAtomicPointer(T *value = 0) | |
{ | |
#ifdef QT_ARCH_PARISC | |
this->_q_lock[0] = this->_q_lock[1] = this->_q_lock[2] = this->_q_lock[3] = -1; | |
#endif | |
QBasicAtomicPointer<T>::_q_value = value; | |
} | |
inline QAtomicPointer(const QAtomicPointer<T> &other) | |
{ | |
#ifdef QT_ARCH_PARISC | |
this->_q_lock[0] = this->_q_lock[1] = this->_q_lock[2] = this->_q_lock[3] = -1; | |
#endif | |
QBasicAtomicPointer<T>::_q_value = other._q_value; | |
} | |
inline QAtomicPointer<T> &operator=(T *value) | |
{ | |
(void) QBasicAtomicPointer<T>::operator=(value); | |
return *this; | |
} | |
inline QAtomicPointer<T> &operator=(const QAtomicPointer<T> &other) | |
{ | |
(void) QBasicAtomicPointer<T>::operator=(other); | |
return *this; | |
} | |
#ifdef qdoc | |
bool operator==(T *value) const; | |
bool operator!=(T *value) const; | |
bool operator!() const; | |
operator T *() const; | |
T *operator->() const; | |
static bool isTestAndSetNative(); | |
static bool isTestAndSetWaitFree(); | |
bool testAndSetRelaxed(T *expectedValue, T *newValue); | |
bool testAndSetAcquire(T *expectedValue, T *newValue); | |
bool testAndSetRelease(T *expectedValue, T *newValue); | |
bool testAndSetOrdered(T *expectedValue, T *newValue); | |
static bool isFetchAndStoreNative(); | |
static bool isFetchAndStoreWaitFree(); | |
T *fetchAndStoreRelaxed(T *newValue); | |
T *fetchAndStoreAcquire(T *newValue); | |
T *fetchAndStoreRelease(T *newValue); | |
T *fetchAndStoreOrdered(T *newValue); | |
static bool isFetchAndAddNative(); | |
static bool isFetchAndAddWaitFree(); | |
T *fetchAndAddRelaxed(qptrdiff valueToAdd); | |
T *fetchAndAddAcquire(qptrdiff valueToAdd); | |
T *fetchAndAddRelease(qptrdiff valueToAdd); | |
T *fetchAndAddOrdered(qptrdiff valueToAdd); | |
#endif | |
}; | |
/*! | |
This is a helper for the assignment operators of implicitly | |
shared classes. Your assignment operator should look like this: | |
\snippet doc/src/snippets/code/src.corelib.thread.qatomic.h 0 | |
*/ | |
template <typename T> | |
inline void qAtomicAssign(T *&d, T *x) | |
{ | |
if (d == x) | |
return; | |
x->ref.ref(); | |
if (!d->ref.deref()) | |
delete d; | |
d = x; | |
} | |
/*! | |
This is a helper for the detach method of implicitly shared | |
classes. Your private class needs a copy constructor which copies | |
the members and sets the refcount to 1. After that, your detach | |
function should look like this: | |
\snippet doc/src/snippets/code/src.corelib.thread.qatomic.h 1 | |
*/ | |
template <typename T> | |
inline void qAtomicDetach(T *&d) | |
{ | |
if (d->ref == 1) | |
return; | |
T *x = d; | |
d = new T(*d); | |
if (!x->ref.deref()) | |
delete x; | |
} | |
QT_END_NAMESPACE | |
QT_END_HEADER | |
#endif // QATOMIC_H |