00001 // This code contains NVIDIA Confidential Information and is disclosed to you
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00003 //
00004 // Notice
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00006 // proprietary rights in and to this software and related documentation and
00007 // any modifications thereto. Any use, reproduction, disclosure, or
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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,
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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) 2008-2017 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 
00031 #ifndef PX_DEFAULT_ALLOCATOR_H
00032 #define PX_DEFAULT_ALLOCATOR_H
00033 
00037 #include "foundation/PxAllocatorCallback.h"
00038 #include "foundation/PxAssert.h"
00039 #include "common/PxPhysXCommonConfig.h"
00040 
00041 #include <stdlib.h>
00042 
00043 #if PX_WINDOWS || PX_LINUX_FAMILY || PX_SWITCH
00044 #include <malloc.h>
00045 #endif
00046 
00047 #if !PX_DOXYGEN
00048 namespace physx
00049 {
00050 #endif
00051 
00052 #if PX_WINDOWS
00053 // on win32 we only have 8-byte alignment guaranteed, but the CRT provides special aligned allocation fns
00054 PX_FORCE_INLINE void* platformAlignedAlloc(size_t size)
00055 {
00056     return _aligned_malloc(size, 16);
00057 }
00058 
00059 PX_FORCE_INLINE void platformAlignedFree(void* ptr)
00060 {
00061     _aligned_free(ptr);
00062 }
00063 #elif PX_LINUX_FAMILY || PX_SWITCH
00064 PX_FORCE_INLINE void* platformAlignedAlloc(size_t size)
00065 {
00066     return ::memalign(16, size);
00067 }
00068 
00069 PX_FORCE_INLINE void platformAlignedFree(void* ptr)
00070 {
00071     ::free(ptr);
00072 }
00073 #else
00074 // on all other platforms we get 16-byte alignment by default
00075 PX_FORCE_INLINE void* platformAlignedAlloc(size_t size)
00076 {
00077     return ::malloc(size);  
00078 }
00079 
00080 PX_FORCE_INLINE void platformAlignedFree(void* ptr)
00081 {
00082     ::free(ptr);
00083 }
00084 #endif
00085 
00089 class PxDefaultAllocator : public PxAllocatorCallback
00090 {
00091 public:
00092     void* allocate(size_t size, const char*, const char*, int)
00093     {
00094         void* ptr = platformAlignedAlloc(size);
00095         PX_ASSERT((reinterpret_cast<size_t>(ptr) & 15)==0);
00096         return ptr;
00097     }
00098 
00099     void deallocate(void* ptr)
00100     {
00101         platformAlignedFree(ptr);
00102     }
00103 };
00104 
00105 #if !PX_DOXYGEN
00106 } // namespace physx
00107 #endif
00108 
00110 #endif