/******************************************************************************** Copyright (C) 1992-2006 Trolltech ASA. All rights reserved.**** This file is part of the QtCore module of the Qt Toolkit.**** This file may be used under the terms of the GNU General Public** License version 2.0 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:** http://www.trolltech.com/products/qt/opensource.html**** If you are unsure which license is appropriate for your use, please** review the following information:** http://www.trolltech.com/products/qt/licensing.html or contact the** sales department at sales@trolltech.com.**** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.******************************************************************************/#ifndef IA64_QATOMIC_H#define IA64_QATOMIC_H#include <QtCore/qglobal.h>QT_BEGIN_HEADER#if defined(Q_CC_INTEL)// intrinsics provided by the Intel C++ Compiler#include <ia64intrin.h>inline int q_atomic_test_and_set_int(volatile int *ptr, int expected, int newval){ return static_cast<int>(_InterlockedCompareExchange(ptr, newval, expected)) == expected; }inline int q_atomic_test_and_set_acquire_int(volatile int *ptr, int expected, int newval){    return static_cast<int>(_InterlockedCompareExchange_acq(reinterpret_cast<volatile uint *>(ptr),                                                          newval, expected)) == expected; }inline int q_atomic_test_and_set_release_int(volatile int *ptr, int expected, int newval){    return static_cast<int>(_InterlockedCompareExchange_rel(reinterpret_cast<volatile uint *>(ptr),                                                          newval, expected)) == expected; }inline int q_atomic_test_and_set_ptr(volatile void *ptr, void *expected, void *newval){    return _InterlockedCompareExchangePointer(reinterpret_cast<void * volatile*>(ptr),                                              newval, expected) == expected;}inline int q_atomic_increment(volatile int *ptr){ return _InterlockedIncrement(ptr); }inline int q_atomic_decrement(volatile int *ptr){ return _InterlockedDecrement(ptr); }inline int q_atomic_set_int(volatile int *ptr, int newval){ return _InterlockedExchange(ptr, newval); }inline void *q_atomic_set_ptr(volatile void *ptr, void *newval){    return _InterlockedExchangePointer(reinterpret_cast<void * volatile *>(ptr), newval);}#else // !Q_CC_INTEL#  if defined(Q_CC_GNU)inline int q_atomic_test_and_set_int(volatile int *ptr, int expected, int newval){    int ret;    asm volatile("mov ar.ccv=%2\n"                 ";;\n"                 "cmpxchg4.acq %0=%1,%3,ar.ccv\n"                 : "=r" (ret), "+m" (*ptr)                 : "r" (expected), "r" (newval)                 : "memory");    return ret == expected;}inline int q_atomic_test_and_set_acquire_int(volatile int *ptr, int expected, int newval){    return q_atomic_test_and_set_int(ptr, expected, newval);}inline int q_atomic_test_and_set_release_int(volatile int *ptr, int expected, int newval){    int ret;    asm volatile("mov ar.ccv=%2\n"                 ";;\n"                 "cmpxchg4.rel %0=%1,%3,ar.ccv\n"                 : "=r" (ret), "+m" (*ptr)                 : "r" (expected), "r" (newval)                 : "memory");    return ret == expected;}inline int q_atomic_test_and_set_ptr(volatile void *ptr, void *expected, void *newval) {    void *ret;    asm volatile("mov ar.ccv=%2\n"                 ";;\n"                 "cmpxchg8.acq %0=%1,%3,ar.ccv\n"                 : "=r" (ret), "+m" (*reinterpret_cast<volatile unsigned long *>(ptr))                 : "r" (expected), "r" (newval)                 : "memory");    return ret == expected;}#  else // !Q_CC_GNUextern "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 // Q_CC_GNUinline int q_atomic_increment(volatile int * const ptr){    register int expected;    for (;;) {        expected = *ptr;        if (q_atomic_test_and_set_int(ptr, expected, expected + 1)) break;    }    return expected != -1;}inline int q_atomic_decrement(volatile int * const ptr){    register int expected;    for (;;) {        expected = *ptr;        if (q_atomic_test_and_set_int(ptr, expected, expected - 1)) break;    }    return expected != 1;}inline int q_atomic_set_int(volatile int *ptr, int newval){    register int expected;    for (;;) {        expected = *ptr;        if (q_atomic_test_and_set_int(ptr, expected, newval)) break;    }    return expected;}inline void *q_atomic_set_ptr(volatile void *ptr, void *newval){    register void *expected;    for (;;) {        expected = *reinterpret_cast<void * volatile *>(ptr);        if (q_atomic_test_and_set_ptr(ptr, expected, newval)) break;    }    return expected;}#endif // Q_CC_INTELQT_END_HEADER#endif // IA64_QATOMIC_H