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Added slightly adapted OSG 3.0.1 headers (changed std::isnan to std::…
…fpclassify= FP_NAN)
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/* -*-c++-*- OpenThreads library, Copyright (C) 2008 The Open Thread Group | ||
* | ||
* This library is open source and may be redistributed and/or modified under | ||
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or | ||
* (at your option) any later version. The full license is in LICENSE file | ||
* included with this distribution, and on the openscenegraph.org website. | ||
* | ||
* This library is distributed in the hope that it will be useful, | ||
* but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
* OpenSceneGraph Public License for more details. | ||
*/ | ||
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#ifndef _OPENTHREADS_ATOMIC_ | ||
#define _OPENTHREADS_ATOMIC_ | ||
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#include <OpenThreads/Config> | ||
#include <OpenThreads/Exports> | ||
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#if defined(_OPENTHREADS_ATOMIC_USE_BSD_ATOMIC) | ||
# include <libkern/OSAtomic.h> | ||
# define _OPENTHREADS_ATOMIC_USE_LIBRARY_ROUTINES | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_GCC_BUILTINS) && defined(__i386__) | ||
# define _OPENTHREADS_ATOMIC_USE_LIBRARY_ROUTINES | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_WIN32_INTERLOCKED) | ||
# define _OPENTHREADS_ATOMIC_USE_LIBRARY_ROUTINES | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_SUN) | ||
# include <atomic.h> | ||
# include "Mutex" | ||
# include "ScopedLock" | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_MUTEX) | ||
# include "Mutex" | ||
# include "ScopedLock" | ||
#endif | ||
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#if defined(_OPENTHREADS_ATOMIC_USE_LIBRARY_ROUTINES) | ||
#define _OPENTHREADS_ATOMIC_INLINE | ||
#else | ||
#define _OPENTHREADS_ATOMIC_INLINE inline | ||
#endif | ||
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namespace OpenThreads { | ||
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/** | ||
* @class Atomic | ||
* @brief This class provides an atomic increment and decrement operation. | ||
*/ | ||
class OPENTHREAD_EXPORT_DIRECTIVE Atomic { | ||
public: | ||
Atomic(unsigned value = 0) : _value(value) | ||
{ } | ||
_OPENTHREADS_ATOMIC_INLINE unsigned operator++(); | ||
_OPENTHREADS_ATOMIC_INLINE unsigned operator--(); | ||
_OPENTHREADS_ATOMIC_INLINE unsigned AND(unsigned value); | ||
_OPENTHREADS_ATOMIC_INLINE unsigned OR(unsigned value); | ||
_OPENTHREADS_ATOMIC_INLINE unsigned XOR(unsigned value); | ||
_OPENTHREADS_ATOMIC_INLINE unsigned exchange(unsigned value = 0); | ||
_OPENTHREADS_ATOMIC_INLINE operator unsigned() const; | ||
private: | ||
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Atomic(const Atomic&); | ||
Atomic& operator=(const Atomic&); | ||
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#if defined(_OPENTHREADS_ATOMIC_USE_MUTEX) | ||
mutable Mutex _mutex; | ||
#endif | ||
#if defined(_OPENTHREADS_ATOMIC_USE_WIN32_INTERLOCKED) | ||
volatile long _value; | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_BSD_ATOMIC) | ||
volatile int32_t _value; | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_SUN) | ||
volatile uint_t _value; | ||
mutable Mutex _mutex; // needed for xor | ||
#else | ||
volatile unsigned _value; | ||
#endif | ||
}; | ||
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/** | ||
* @class AtomicPtr | ||
* @brief This class provides an atomic pointer assignment using cas operations. | ||
*/ | ||
class OPENTHREAD_EXPORT_DIRECTIVE AtomicPtr { | ||
public: | ||
AtomicPtr(void* ptr = 0) : _ptr(ptr) | ||
{ } | ||
~AtomicPtr() | ||
{ _ptr = 0; } | ||
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// assigns a new pointer | ||
_OPENTHREADS_ATOMIC_INLINE bool assign(void* ptrNew, const void* const ptrOld); | ||
_OPENTHREADS_ATOMIC_INLINE void* get() const; | ||
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private: | ||
AtomicPtr(const AtomicPtr&); | ||
AtomicPtr& operator=(const AtomicPtr&); | ||
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#if defined(_OPENTHREADS_ATOMIC_USE_MUTEX) | ||
mutable Mutex _mutex; | ||
#endif | ||
void* volatile _ptr; | ||
}; | ||
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#if !defined(_OPENTHREADS_ATOMIC_USE_LIBRARY_ROUTINES) | ||
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_OPENTHREADS_ATOMIC_INLINE unsigned | ||
Atomic::operator++() | ||
{ | ||
#if defined(_OPENTHREADS_ATOMIC_USE_GCC_BUILTINS) | ||
return __sync_add_and_fetch(&_value, 1); | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_MIPOSPRO_BUILTINS) | ||
return __add_and_fetch(&_value, 1); | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_SUN) | ||
return atomic_inc_uint_nv(&_value); | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_MUTEX) | ||
ScopedLock<Mutex> lock(_mutex); | ||
return ++_value; | ||
#else | ||
return ++_value; | ||
#endif | ||
} | ||
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_OPENTHREADS_ATOMIC_INLINE unsigned | ||
Atomic::operator--() | ||
{ | ||
#if defined(_OPENTHREADS_ATOMIC_USE_GCC_BUILTINS) | ||
return __sync_sub_and_fetch(&_value, 1); | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_MIPOSPRO_BUILTINS) | ||
return __sub_and_fetch(&_value, 1); | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_SUN) | ||
return atomic_dec_uint_nv(&_value); | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_MUTEX) | ||
ScopedLock<Mutex> lock(_mutex); | ||
return --_value; | ||
#else | ||
return --_value; | ||
#endif | ||
} | ||
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_OPENTHREADS_ATOMIC_INLINE unsigned | ||
Atomic::AND(unsigned value) | ||
{ | ||
#if defined(_OPENTHREADS_ATOMIC_USE_GCC_BUILTINS) | ||
return __sync_fetch_and_and(&_value, value); | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_MIPOSPRO_BUILTINS) | ||
return __and_and_fetch(&_value, value); | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_SUN) | ||
return atomic_and_uint_nv(&_value, value); | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_MUTEX) | ||
ScopedLock<Mutex> lock(_mutex); | ||
_value &= value; | ||
return _value; | ||
#else | ||
_value &= value; | ||
return _value; | ||
#endif | ||
} | ||
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_OPENTHREADS_ATOMIC_INLINE unsigned | ||
Atomic::OR(unsigned value) | ||
{ | ||
#if defined(_OPENTHREADS_ATOMIC_USE_GCC_BUILTINS) | ||
return __sync_fetch_and_or(&_value, value); | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_MIPOSPRO_BUILTINS) | ||
return __or_and_fetch(&_value, value); | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_SUN) | ||
return atomic_or_uint_nv(&_value, value); | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_MUTEX) | ||
ScopedLock<Mutex> lock(_mutex); | ||
_value |= value; | ||
return _value; | ||
#else | ||
_value |= value; | ||
return _value; | ||
#endif | ||
} | ||
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_OPENTHREADS_ATOMIC_INLINE unsigned | ||
Atomic::XOR(unsigned value) | ||
{ | ||
#if defined(_OPENTHREADS_ATOMIC_USE_GCC_BUILTINS) | ||
return __sync_fetch_and_xor(&_value, value); | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_MIPOSPRO_BUILTINS) | ||
return __xor_and_fetch(&_value, value); | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_SUN) | ||
ScopedLock<Mutex> lock(_mutex); | ||
_value ^= value; | ||
return _value; | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_MUTEX) | ||
ScopedLock<Mutex> lock(_mutex); | ||
_value ^= value; | ||
return _value; | ||
#else | ||
_value ^= value; | ||
return _value; | ||
#endif | ||
} | ||
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_OPENTHREADS_ATOMIC_INLINE unsigned | ||
Atomic::exchange(unsigned value) | ||
{ | ||
#if defined(_OPENTHREADS_ATOMIC_USE_GCC_BUILTINS) | ||
return __sync_lock_test_and_set(&_value, value); | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_MIPOSPRO_BUILTINS) | ||
return __compare_and_swap(&_value, _value, value); | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_SUN) | ||
return atomic_cas_uint(&_value, _value, value); | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_MUTEX) | ||
ScopedLock<Mutex> lock(_mutex); | ||
unsigned oldval = _value; | ||
_value = value; | ||
return oldval; | ||
#else | ||
unsigned oldval = _value; | ||
_value = value; | ||
return oldval; | ||
#endif | ||
} | ||
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_OPENTHREADS_ATOMIC_INLINE | ||
Atomic::operator unsigned() const | ||
{ | ||
#if defined(_OPENTHREADS_ATOMIC_USE_GCC_BUILTINS) | ||
__sync_synchronize(); | ||
return _value; | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_MIPOSPRO_BUILTINS) | ||
__synchronize(); | ||
return _value; | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_SUN) | ||
membar_consumer(); // Hmm, do we need??? | ||
return _value; | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_MUTEX) | ||
ScopedLock<Mutex> lock(_mutex); | ||
return _value; | ||
#else | ||
return _value; | ||
#endif | ||
} | ||
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_OPENTHREADS_ATOMIC_INLINE bool | ||
AtomicPtr::assign(void* ptrNew, const void* const ptrOld) | ||
{ | ||
#if defined(_OPENTHREADS_ATOMIC_USE_GCC_BUILTINS) | ||
return __sync_bool_compare_and_swap(&_ptr, ptrOld, ptrNew); | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_MIPOSPRO_BUILTINS) | ||
return __compare_and_swap((unsigned long*)&_ptr, (unsigned long)ptrOld, (unsigned long)ptrNew); | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_SUN) | ||
return ptrOld == atomic_cas_ptr(&_ptr, const_cast<void*>(ptrOld), ptrNew); | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_MUTEX) | ||
ScopedLock<Mutex> lock(_mutex); | ||
if (_ptr != ptrOld) | ||
return false; | ||
_ptr = ptrNew; | ||
return true; | ||
#else | ||
if (_ptr != ptrOld) | ||
return false; | ||
_ptr = ptrNew; | ||
return true; | ||
#endif | ||
} | ||
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_OPENTHREADS_ATOMIC_INLINE void* | ||
AtomicPtr::get() const | ||
{ | ||
#if defined(_OPENTHREADS_ATOMIC_USE_GCC_BUILTINS) | ||
__sync_synchronize(); | ||
return _ptr; | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_MIPOSPRO_BUILTINS) | ||
__synchronize(); | ||
return _ptr; | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_SUN) | ||
membar_consumer(); // Hmm, do we need??? | ||
return _ptr; | ||
#elif defined(_OPENTHREADS_ATOMIC_USE_MUTEX) | ||
ScopedLock<Mutex> lock(_mutex); | ||
return _ptr; | ||
#else | ||
return _ptr; | ||
#endif | ||
} | ||
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#endif // !defined(_OPENTHREADS_ATOMIC_USE_LIBRARY_ROUTINES) | ||
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} | ||
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#endif // _OPENTHREADS_ATOMIC_ |
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