qatomic_ia64.h
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- **
- ** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
- ** Contact: Qt Software Information (qt-info@nokia.com)
- **
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- **
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- **
- **
- ** GNU General Public License Usage
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- ** General Public License versions 2.0 or 3.0 as published by the Free
- ** Software Foundation and appearing in the file LICENSE.GPL included in
- ** the packaging of this file. Please review the following information
- ** to ensure GNU General Public Licensing requirements will be met:
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- ** exception, Nokia gives you certain additional rights. These rights
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- #ifndef QATOMIC_IA64_H
- #define QATOMIC_IA64_H
- QT_BEGIN_HEADER
- QT_BEGIN_NAMESPACE
- #define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_ALWAYS_NATIVE
- inline bool QBasicAtomicInt::isReferenceCountingNative()
- { return true; }
- inline bool QBasicAtomicInt::isReferenceCountingWaitFree()
- { return false; }
- #define Q_ATOMIC_INT_TEST_AND_SET_IS_ALWAYS_NATIVE
- #define Q_ATOMIC_INT_TEST_AND_SET_IS_WAIT_FREE
- inline bool QBasicAtomicInt::isTestAndSetNative()
- { return true; }
- inline bool QBasicAtomicInt::isTestAndSetWaitFree()
- { return true; }
- #define Q_ATOMIC_INT_FETCH_AND_STORE_IS_ALWAYS_NATIVE
- inline bool QBasicAtomicInt::isFetchAndStoreNative()
- { return true; }
- inline bool QBasicAtomicInt::isFetchAndStoreWaitFree()
- { return false; }
- #define Q_ATOMIC_INT_FETCH_AND_ADD_IS_ALWAYS_NATIVE
- inline bool QBasicAtomicInt::isFetchAndAddNative()
- { return true; }
- inline bool QBasicAtomicInt::isFetchAndAddWaitFree()
- { return false; }
- #define Q_ATOMIC_POINTER_TEST_AND_SET_IS_ALWAYS_NATIVE
- #define Q_ATOMIC_POINTER_TEST_AND_SET_IS_WAIT_FREE
- template <typename T>
- Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetNative()
- { return true; }
- 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; }
- template <typename T>
- Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreWaitFree()
- { return false; }
- #define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_ALWAYS_NATIVE
- template <typename T>
- Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddNative()
- { return true; }
- template <typename T>
- Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddWaitFree()
- { return false; }
- #if defined(Q_CC_INTEL)
- // intrinsics provided by the Intel C++ Compiler
- #include <ia64intrin.h>
- inline bool QBasicAtomicInt::testAndSetRelaxed(int expectedValue, int newValue)
- {
- register int expectedValueCopy = expectedValue;
- return (static_cast<int>(_InterlockedCompareExchange(&_q_value,
- newValue,
- expectedValueCopy))
- == expectedValue);
- }
- inline bool QBasicAtomicInt::testAndSetAcquire(int expectedValue, int newValue)
- {
- register int expectedValueCopy = expectedValue;
- return (static_cast<int>(_InterlockedCompareExchange_acq(reinterpret_cast<volatile uint *>(&_q_value),
- newValue,
- expectedValueCopy))
- == expectedValue);
- }
- inline bool QBasicAtomicInt::testAndSetRelease(int expectedValue, int newValue)
- {
- register int expectedValueCopy = expectedValue;
- return (static_cast<int>(_InterlockedCompareExchange_rel(reinterpret_cast<volatile uint *>(&_q_value),
- newValue,
- expectedValueCopy))
- == expectedValue);
- }
- inline bool QBasicAtomicInt::testAndSetOrdered(int expectedValue, int newValue)
- {
- __memory_barrier();
- return testAndSetAcquire(expectedValue, newValue);
- }
- template <typename T>
- Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelaxed(T *expectedValue, T *newValue)
- {
- register T *expectedValueCopy = expectedValue;
- return (_InterlockedCompareExchangePointer(reinterpret_cast<void * volatile*>(&_q_value),
- newValue,
- expectedValueCopy)
- == expectedValue);
- }
- template <typename T>
- Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetAcquire(T *expectedValue, T *newValue)
- {
- union {
- volatile void *x;
- volatile unsigned long *p;
- };
- x = &_q_value;
- register T *expectedValueCopy = expectedValue;
- return (_InterlockedCompareExchange64_acq(p, quintptr(newValue), quintptr(expectedValueCopy))
- == quintptr(expectedValue));
- }
- template <typename T>
- Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelease(T *expectedValue, T *newValue)
- {
- union {
- volatile void *x;
- volatile unsigned long *p;
- };
- x = &_q_value;
- register T *expectedValueCopy = expectedValue;
- return (_InterlockedCompareExchange64_rel(p, quintptr(newValue), quintptr(expectedValueCopy))
- == quintptr(expectedValue));
- }
- template <typename T>
- Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetOrdered(T *expectedValue, T *newValue)
- {
- __memory_barrier();
- return testAndSetAcquire(expectedValue, newValue);
- }
- #else // !Q_CC_INTEL
- # if defined(Q_CC_GNU)
- inline bool QBasicAtomicInt::testAndSetAcquire(int expectedValue, int newValue)
- {
- int ret;
- asm volatile("mov ar.ccv=%2n"
- ";;n"
- "cmpxchg4.acq %0=%1,%3,ar.ccvn"
- : "=r" (ret), "+m" (_q_value)
- : "r" (expectedValue), "r" (newValue)
- : "memory");
- return ret == expectedValue;
- }
- inline bool QBasicAtomicInt::testAndSetRelease(int expectedValue, int newValue)
- {
- int ret;
- asm volatile("mov ar.ccv=%2n"
- ";;n"
- "cmpxchg4.rel %0=%1,%3,ar.ccvn"
- : "=r" (ret), "+m" (_q_value)
- : "r" (expectedValue), "r" (newValue)
- : "memory");
- return ret == expectedValue;
- }
- template <typename T>
- Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetAcquire(T *expectedValue, T *newValue)
- {
- T *ret;
- asm volatile("mov ar.ccv=%2n"
- ";;n"
- "cmpxchg8.acq %0=%1,%3,ar.ccvn"
- : "=r" (ret), "+m" (_q_value)
- : "r" (expectedValue), "r" (newValue)
- : "memory");
- return ret == expectedValue;
- }
- template <typename T>
- Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelease(T *expectedValue, T *newValue)
- {
- T *ret;
- asm volatile("mov ar.ccv=%2n"
- ";;n"
- "cmpxchg8.rel %0=%1,%3,ar.ccvn"
- : "=r" (ret), "+m" (_q_value)
- : "r" (expectedValue), "r" (newValue)
- : "memory");
- return ret == expectedValue;
- }
- #elif defined Q_CC_HPACC
- QT_BEGIN_INCLUDE_NAMESPACE
- #include <ia64/sys/inline.h>
- QT_END_INCLUDE_NAMESPACE
- #define FENCE (_Asm_fence)(_UP_CALL_FENCE | _UP_SYS_FENCE | _DOWN_CALL_FENCE | _DOWN_SYS_FENCE)
- inline bool QBasicAtomicInt::testAndSetAcquire(int expectedValue, int newValue)
- {
- _Asm_mov_to_ar((_Asm_app_reg)_AREG_CCV, (unsigned)expectedValue, FENCE);
- int ret = _Asm_cmpxchg((_Asm_sz)_SZ_W, (_Asm_sem)_SEM_ACQ,
- &_q_value, (unsigned)newValue, (_Asm_ldhint)_LDHINT_NONE);
- return ret == expectedValue;
- }
- inline bool QBasicAtomicInt::testAndSetRelease(int expectedValue, int newValue)
- {
- _Asm_mov_to_ar((_Asm_app_reg)_AREG_CCV, (unsigned)expectedValue, FENCE);
- int ret = _Asm_cmpxchg((_Asm_sz)_SZ_W, (_Asm_sem)_SEM_REL,
- &_q_value, newValue, (_Asm_ldhint)_LDHINT_NONE);
- return ret == expectedValue;
- }
- template <typename T>
- Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetAcquire(T *expectedValue, T *newValue)
- {
- #ifdef __LP64__
- _Asm_mov_to_ar((_Asm_app_reg)_AREG_CCV, (quint64)expectedValue, FENCE);
- T *ret = (T *)_Asm_cmpxchg((_Asm_sz)_SZ_D, (_Asm_sem)_SEM_ACQ,
- &_q_value, (quint64)newValue, (_Asm_ldhint)_LDHINT_NONE);
- #else
- _Asm_mov_to_ar((_Asm_app_reg)_AREG_CCV, (quint32)expectedValue, FENCE);
- T *ret = (T *)_Asm_cmpxchg((_Asm_sz)_SZ_W, (_Asm_sem)_SEM_ACQ,
- &_q_value, (quint32)newValue, (_Asm_ldhint)_LDHINT_NONE);
- #endif
- return ret == expectedValue;
- }
- template <typename T>
- Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelease(T *expectedValue, T *newValue)
- {
- #ifdef __LP64__
- _Asm_mov_to_ar((_Asm_app_reg)_AREG_CCV, (quint64)expectedValue, FENCE);
- T *ret = (T *)_Asm_cmpxchg((_Asm_sz)_SZ_D, (_Asm_sem)_SEM_REL,
- &_q_value, (quint64)newValue, (_Asm_ldhint)_LDHINT_NONE);
- #else
- _Asm_mov_to_ar((_Asm_app_reg)_AREG_CCV, (quint32)expectedValue, FENCE);
- T *ret = (T *)_Asm_cmpxchg((_Asm_sz)_SZ_W, (_Asm_sem)_SEM_REL,
- &_q_value, (quint32)newValue, (_Asm_ldhint)_LDHINT_NONE);
- #endif
- return ret == expectedValue;
- }
- #else
- extern "C" {
- Q_CORE_EXPORT int q_atomic_test_and_set_int(volatile int *ptr, int expected, int newval);
- Q_CORE_EXPORT int q_atomic_test_and_set_ptr(volatile void *ptr, void *expected, void *newval);
- } // extern "C"
- #endif
- inline bool QBasicAtomicInt::testAndSetRelaxed(int expectedValue, int newValue)
- {
- return testAndSetAcquire(expectedValue, newValue);
- }
- inline bool QBasicAtomicInt::testAndSetOrdered(int expectedValue, int newValue)
- {
- return testAndSetAcquire(expectedValue, newValue);
- }
- template <typename T>
- Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelaxed(T *expectedValue, T *newValue)
- {
- return testAndSetAcquire(expectedValue, newValue);
- }
- template <typename T>
- Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetOrdered(T *expectedValue, T *newValue)
- {
- return testAndSetAcquire(expectedValue, newValue);
- }
- #endif // Q_CC_INTEL
- inline int QBasicAtomicInt::fetchAndStoreRelaxed(int newValue)
- {
- int returnValue;
- for (;;) {
- returnValue = _q_value;
- if (testAndSetRelaxed(returnValue, newValue))
- break;
- }
- return returnValue;
- }
- inline int QBasicAtomicInt::fetchAndStoreAcquire(int newValue)
- {
- int returnValue;
- for (;;) {
- returnValue = _q_value;
- if (testAndSetAcquire(returnValue, newValue))
- break;
- }
- return returnValue;
- }
- inline int QBasicAtomicInt::fetchAndStoreRelease(int newValue)
- {
- int returnValue;
- for (;;) {
- returnValue = _q_value;
- if (testAndSetRelease(returnValue, newValue))
- break;
- }
- return returnValue;
- }
- inline int QBasicAtomicInt::fetchAndStoreOrdered(int newValue)
- {
- int returnValue;
- for (;;) {
- returnValue = _q_value;
- if (testAndSetOrdered(returnValue, newValue))
- break;
- }
- return returnValue;
- }
- inline int QBasicAtomicInt::fetchAndAddRelaxed(int valueToAdd)
- {
- int returnValue;
- for (;;) {
- returnValue = _q_value;
- if (testAndSetRelaxed(returnValue, _q_value + valueToAdd))
- break;
- }
- return returnValue;
- }
- inline int QBasicAtomicInt::fetchAndAddAcquire(int valueToAdd)
- {
- int returnValue;
- for (;;) {
- returnValue = _q_value;
- if (testAndSetAcquire(returnValue, _q_value + valueToAdd))
- break;
- }
- return returnValue;
- }
- inline int QBasicAtomicInt::fetchAndAddRelease(int valueToAdd)
- {
- int returnValue;
- for (;;) {
- returnValue = _q_value;
- if (testAndSetRelease(returnValue, _q_value + valueToAdd))
- break;
- }
- return returnValue;
- }
- inline int QBasicAtomicInt::fetchAndAddOrdered(int valueToAdd)
- {
- int returnValue;
- for (;;) {
- returnValue = _q_value;
- if (testAndSetOrdered(returnValue, _q_value + valueToAdd))
- break;
- }
- return returnValue;
- }
- inline bool QBasicAtomicInt::ref()
- {
- return fetchAndAddRelaxed(1) != -1;
- }
- inline bool QBasicAtomicInt::deref()
- {
- return fetchAndAddRelaxed(-1) != 1;
- }
- template <typename T>
- Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreRelaxed(T *newValue)
- {
- T *returnValue;
- for (;;) {
- returnValue = (_q_value);
- if (testAndSetRelaxed(returnValue, newValue))
- break;
- }
- return returnValue;
- }
- template <typename T>
- Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreAcquire(T *newValue)
- {
- T *returnValue;
- for (;;) {
- returnValue = (_q_value);
- if (testAndSetAcquire(returnValue, newValue))
- break;
- }
- return returnValue;
- }
- template <typename T>
- Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreRelease(T *newValue)
- {
- T *returnValue;
- for (;;) {
- returnValue = (_q_value);
- if (testAndSetRelease(returnValue, newValue))
- break;
- }
- return returnValue;
- }
- template <typename T>
- Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreOrdered(T *newValue)
- {
- T *returnValue;
- for (;;) {
- returnValue = (_q_value);
- if (testAndSetOrdered(returnValue, newValue))
- break;
- }
- return returnValue;
- }
- template <typename T>
- Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelaxed(qptrdiff valueToAdd)
- {
- T *returnValue;
- for (;;) {
- returnValue = (_q_value);
- if (testAndSetRelaxed(returnValue, returnValue + valueToAdd))
- break;
- }
- return returnValue;
- }
- template <typename T>
- Q_INLINE_TEMPLATE
- T *QBasicAtomicPointer<T>::fetchAndAddAcquire(qptrdiff valueToAdd)
- {
- T *returnValue;
- for (;;) {
- returnValue = (_q_value);
- if (testAndSetAcquire(returnValue, returnValue + valueToAdd))
- break;
- }
- return returnValue;
- }
- template <typename T>
- Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelease(qptrdiff valueToAdd)
- {
- T *returnValue;
- for (;;) {
- returnValue = (_q_value);
- if (testAndSetRelease(returnValue, returnValue + valueToAdd))
- break;
- }
- return returnValue;
- }
- template <typename T>
- Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddOrdered(qptrdiff valueToAdd)
- {
- T *returnValue;
- for (;;) {
- returnValue = (_q_value);
- if (testAndSetOrdered(returnValue, returnValue + valueToAdd))
- break;
- }
- return returnValue;
- }
- QT_END_NAMESPACE
- QT_END_HEADER
- #endif // QATOMIC_IA64_H