E:/p4/sw/physx/PxShared/1.0/trunk/src/foundation/include/PsAtomic.h
Go to the documentation of this file.00001 // This code contains NVIDIA Confidential Information and is disclosed to you 00002 // under a form of NVIDIA software license agreement provided separately to you. 00003 // 00004 // Notice 00005 // NVIDIA Corporation and its licensors retain all intellectual property and 00006 // proprietary rights in and to this software and related documentation and 00007 // any modifications thereto. Any use, reproduction, disclosure, or 00008 // distribution of this software and related documentation without an express 00009 // license agreement from NVIDIA Corporation is strictly prohibited. 00010 // 00011 // ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES 00012 // NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO 00013 // THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT, 00014 // MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE. 00015 // 00016 // Information and code furnished is believed to be accurate and reliable. 00017 // However, NVIDIA Corporation assumes no responsibility for the consequences of use of such 00018 // information or for any infringement of patents or other rights of third parties that may 00019 // result from its use. No license is granted by implication or otherwise under any patent 00020 // or patent rights of NVIDIA Corporation. Details are subject to change without notice. 00021 // This code supersedes and replaces all information previously supplied. 00022 // NVIDIA Corporation products are not authorized for use as critical 00023 // components in life support devices or systems without express written approval of 00024 // NVIDIA Corporation. 00025 // 00026 // Copyright (c) 2008-2014 NVIDIA Corporation. All rights reserved. 00027 // Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved. 00028 // Copyright (c) 2001-2004 NovodeX AG. All rights reserved. 00029 00030 #ifndef PSFOUNDATION_PSATOMIC_H 00031 #define PSFOUNDATION_PSATOMIC_H 00032 00033 #include "Ps.h" 00034 00035 namespace physx 00036 { 00037 namespace shdfnd 00038 { 00039 /* set *dest equal to val. Return the old value of *dest */ 00040 PX_FOUNDATION_API int32_t atomicExchange(volatile int32_t* dest, int32_t val); 00041 00042 /* if *dest == comp, replace with exch. Return original value of *dest */ 00043 PX_FOUNDATION_API int32_t atomicCompareExchange(volatile int32_t* dest, int32_t exch, int32_t comp); 00044 00045 /* if *dest == comp, replace with exch. Return original value of *dest */ 00046 PX_FOUNDATION_API void* atomicCompareExchangePointer(volatile void** dest, void* exch, void* comp); 00047 00048 /* increment the specified location. Return the incremented value */ 00049 PX_FOUNDATION_API int32_t atomicIncrement(volatile int32_t* val); 00050 00051 /* decrement the specified location. Return the decremented value */ 00052 PX_FOUNDATION_API int32_t atomicDecrement(volatile int32_t* val); 00053 00054 /* add delta to *val. Return the new value */ 00055 PX_FOUNDATION_API int32_t atomicAdd(volatile int32_t* val, int32_t delta); 00056 00057 /* compute the maximum of dest and val. Return the new value */ 00058 PX_FOUNDATION_API int32_t atomicMax(volatile int32_t* val, int32_t val2); 00059 00060 } // namespace shdfnd 00061 } // namespace physx 00062 00063 #endif // #ifndef PSFOUNDATION_PSATOMIC_H
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