/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** This file is part of the QtGui module of the Qt Toolkit.
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** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
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** file. Please review the following information to ensure the GNU General
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****************************************************************************/

#ifndef QATOMIC_INTEGRITY_H
#define QATOMIC_INTEGRITY_H

#include <INTEGRITY.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

#define qt_pp2addrp(a)  reinterpret_cast<Address *>(const_cast<T **>(a))
#define qt_ip2addrp(a) reinterpret_cast<Address *>(const_cast<int *>(a))
#define qt_p2addrp(a) reinterpret_cast<Address *>(a)
#define qt_addr(a) reinterpret_cast<Address>(a)


#define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_ALWAYS_NATIVE

inline bool QBasicAtomicInt::isReferenceCountingNative()
{ return true; }

#define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_WAIT_FREE

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

#define Q_ATOMIC_INT_TEST_AND_SET_IS_ALWAYS_NATIVE

inline bool QBasicAtomicInt::isTestAndSetNative()
{ return true; }

#define Q_ATOMIC_INT_TEST_AND_SET_IS_WAIT_FREE

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

#define Q_ATOMIC_INT_FETCH_AND_STORE_IS_ALWAYS_NATIVE

inline bool QBasicAtomicInt::isFetchAndStoreNative()
{ return true; }

#define Q_ATOMIC_INT_FETCH_AND_STORE_IS_WAIT_FREE

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

#define Q_ATOMIC_INT_FETCH_AND_ADD_IS_ALWAYS_NATIVE

inline bool QBasicAtomicInt::isFetchAndAddNative()
{ return true; }

#define Q_ATOMIC_INT_FETCH_AND_ADD_IS_WAIT_FREE

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

#define Q_ATOMIC_POINTER_TEST_AND_SET_IS_ALWAYS_NATIVE

template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetNative()
{ return true; }

#define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_WAIT_FREE

template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetWaitFree()
{ return true; }

#define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_ALWAYS_NATIVE

template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreNative()
{ return true; }

#define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_WAIT_FREE

template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreWaitFree()
{ return true; }

#define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_ALWAYS_NATIVE

template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddNative()
{ return true; }

#define Q_ATOMIC_POINTER_TEST_AND_SET_IS_WAIT_FREE

template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddWaitFree()
{ return true; }

// Reference counting

inline bool QBasicAtomicInt::ref()
{
    int old_value;
    AtomicModify(qt_ip2addrp(&_q_value), qt_ip2addrp(&old_value), 0, 1U);
    return _q_value != 0;
}

inline bool QBasicAtomicInt::deref()
{
    int old_value;
    AtomicModify(qt_ip2addrp(&_q_value), qt_ip2addrp(&old_value), 0, -1U);
    return _q_value != 0;
}

// Test and set for integers

inline bool QBasicAtomicInt::testAndSetOrdered(int expectedValue, int newValue)
{
    return TestAndSet(qt_ip2addrp(&_q_value), expectedValue, newValue) == Success;
}

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)
{
    int old_value;
    do {
        old_value = _q_value;
    } while (TestAndSet(qt_ip2addrp(&_q_value), old_value, newValue) != Success);
    return old_value;
}

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)
{
    int old_value;
    AtomicModify(qt_ip2addrp(&_q_value), qt_ip2addrp(&old_value), 0, valueToAdd);

    return old_value;
}

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)
{
    return TestAndSet(qt_pp2addrp(&_q_value), qt_addr(expectedValue), qt_addr(newValue)) == Success;
}

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)
{
    Address old_value;

    do {
        old_value = qt_addr(_q_value);
    } while (TestAndSet(qt_pp2addrp(&_q_value), old_value, qt_addr(newValue)) != Success);

    return reinterpret_cast<T *>(old_value);
}

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)
{
    Address old_value;
    AtomicModify(qt_pp2addrp(&_q_value), &old_value, 0, valueToAdd * sizeof(T));

    return reinterpret_cast<T *>(old_value);
}

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_INTEGRITY_H