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// This code contains NVIDIA Confidential Information and is disclosed to you
// under a form of NVIDIA software license agreement provided separately to you.
//
// Notice
// NVIDIA Corporation and its licensors retain all intellectual property and
// proprietary rights in and to this software and related documentation and
// any modifications thereto. Any use, reproduction, disclosure, or
// distribution of this software and related documentation without an express
// license agreement from NVIDIA Corporation is strictly prohibited.
//
// ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES
// NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO
// THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT,
// MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.
//
// Information and code furnished is believed to be accurate and reliable.
// However, NVIDIA Corporation assumes no responsibility for the consequences of use of such
// information or for any infringement of patents or other rights of third parties that may
// result from its use. No license is granted by implication or otherwise under any patent
// or patent rights of NVIDIA Corporation. Details are subject to change without notice.
// This code supersedes and replaces all information previously supplied.
// NVIDIA Corporation products are not authorized for use as critical
// components in life support devices or systems without express written approval of
// NVIDIA Corporation.
//
// Copyright (c) 2008-2018 NVIDIA Corporation. All rights reserved.
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
#ifndef PSFOUNDATION_PSALIGNEDMALLOC_H
#define PSFOUNDATION_PSALIGNEDMALLOC_H
#include "PsUserAllocated.h"
/*!
Allocate aligned memory.
Alignment must be a power of 2!
-- should be templated by a base allocator
*/
namespace physx
{
namespace shdfnd
{
/**
Allocator, which is used to access the global PxAllocatorCallback instance
(used for dynamic data types template instantiation), which can align memory
*/
// SCS: AlignedMalloc with 3 params not found, seems not used on PC either
// disabled for now to avoid GCC error
template <uint32_t N, typename BaseAllocator = NonTrackingAllocator>
class AlignedAllocator : public BaseAllocator
{
public:
AlignedAllocator(const BaseAllocator& base = BaseAllocator()) : BaseAllocator(base)
{
}
void* allocate(size_t size, const char* file, int line)
{
size_t pad = N - 1 + sizeof(size_t); // store offset for delete.
uint8_t* base = reinterpret_cast<uint8_t*>(BaseAllocator::allocate(size + pad, file, line));
if(!base)
return NULL;
uint8_t* ptr = reinterpret_cast<uint8_t*>(size_t(base + pad) & ~(size_t(N) - 1)); // aligned pointer, ensuring N
// is a size_t
// wide mask
reinterpret_cast<size_t*>(ptr)[-1] = size_t(ptr - base); // store offset
return ptr;
}
void deallocate(void* ptr)
{
if(ptr == NULL)
return;
uint8_t* base = reinterpret_cast<uint8_t*>(ptr) - reinterpret_cast<size_t*>(ptr)[-1];
BaseAllocator::deallocate(base);
}
};
} // namespace shdfnd
} // namespace physx
#endif // #ifndef PSFOUNDATION_PSALIGNEDMALLOC_H
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