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/****************************************************************************
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** Copyright (C) 1992-2005 Trolltech AS. All rights reserved.
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** This file is part of the core module of the Qt Toolkit.
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** This file may be distributed under the terms of the Q Public License
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** as defined by Trolltech AS of Norway and appearing in the file
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** LICENSE.QPL included in the packaging of this file.
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** This file may be distributed and/or modified under the terms of the
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** GNU General Public License version 2 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file.
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** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
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** information about Qt Commercial License Agreements.
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** See http://www.trolltech.com/qpl/ for QPL licensing information.
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** See http://www.trolltech.com/gpl/ for GPL licensing information.
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** Contact info@trolltech.com if any conditions of this licensing are
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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****************************************************************************/
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#ifndef IA64_QATOMIC_H
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#define IA64_QATOMIC_H
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#include <QtCore/qglobal.h>
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#if defined(Q_CC_INTEL)
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// intrinsics provided by the Intel C++ Compiler
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int _InterlockedExchange(volatile int *, int);
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int _InterlockedCompareExchange(volatile int *, int, int);
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int _InterlockedIncrement(volatile int *addend);
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int _InterlockedDecrement(volatile int *addend);
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void * _InterlockedCompareExchangePointer(void * volatile *, void *, void *);
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void * _InterlockedExchangePointer(void * volatile *, void *);
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inline int q_atomic_test_and_set_int(volatile int *ptr, int expected, int newval)
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{ return static_cast<int>(_InterlockedCompareExchange(ptr, newval, expected)) == expected; }
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inline int q_atomic_test_and_set_ptr(volatile void *ptr, void *expected, void *newval)
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return _InterlockedCompareExchangePointer(reinterpret_cast<void * volatile *>(ptr),
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newval, expected) == expected;
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inline int q_atomic_increment(volatile int *ptr)
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{ return _InterlockedIncrement(ptr); }
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inline int q_atomic_decrement(volatile int *ptr)
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{ return _InterlockedDecrement(ptr); }
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inline int q_atomic_set_int(volatile int *ptr, int newval)
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{ return _InterlockedExchange(ptr, newval); }
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inline void *q_atomic_set_ptr(volatile void *ptr, void *newval)
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return _InterlockedExchangePointer(reinterpret_cast<void * volatile *>(ptr), newval);
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# if defined(Q_CC_GNU)
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inline int q_atomic_test_and_set_int(volatile int *ptr, int expected, int newval)
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asm volatile("mov ar.ccv=%2\n"
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"cmpxchg4.acq %0=%1,%3,ar.ccv\n"
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: "=r" (ret), "+m" (*ptr)
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: "r" (expected), "r" (newval)
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return ret == expected;
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inline int q_atomic_test_and_set_ptr(volatile void *ptr, void *expected, void *newval) {
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asm volatile("mov ar.ccv=%2\n"
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"cmpxchg8.acq %0=%1,%3,ar.ccv\n"
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: "=r" (ret), "+m" (*ptr)
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: "r" (expected), "r" (newval)
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return ret == expected;
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Q_CORE_EXPORT int q_atomic_test_and_set_int(volatile int *ptr, int expected, int newval);
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Q_CORE_EXPORT int q_atomic_test_and_set_ptr(volatile void *ptr, void *expected, void *newval);
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inline int q_atomic_increment(volatile int * const ptr)
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register int expected;
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if (q_atomic_test_and_set_int(ptr, expected, expected + 1)) break;
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return expected != -1;
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inline int q_atomic_decrement(volatile int * const ptr)
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register int expected;
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if (q_atomic_test_and_set_int(ptr, expected, expected - 1)) break;
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return expected != 1;
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inline int q_atomic_set_int(volatile int *ptr, int newval)
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register int expected;
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if (q_atomic_test_and_set_int(ptr, expected, newval)) break;
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inline void *q_atomic_set_ptr(volatile void *ptr, void *newval)
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register void *expected;
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expected = *reinterpret_cast<void * volatile *>(ptr);
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if (q_atomic_test_and_set_ptr(ptr, expected, newval)) break;
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#endif // IA64_QATOMIC_H