94 lines
3.3 KiB
C++
94 lines
3.3 KiB
C++
// This code contains NVIDIA Confidential Information and is disclosed to you
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// under a form of NVIDIA software license agreement provided separately to you.
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//
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// Notice
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// NVIDIA Corporation and its licensors retain all intellectual property and
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// proprietary rights in and to this software and related documentation and
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// any modifications thereto. Any use, reproduction, disclosure, or
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// distribution of this software and related documentation without an express
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// license agreement from NVIDIA Corporation is strictly prohibited.
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//
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// ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES
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// NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO
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// THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT,
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// MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.
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//
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// Information and code furnished is believed to be accurate and reliable.
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// However, NVIDIA Corporation assumes no responsibility for the consequences of use of such
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// information or for any infringement of patents or other rights of third parties that may
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// result from its use. No license is granted by implication or otherwise under any patent
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// or patent rights of NVIDIA Corporation. Details are subject to change without notice.
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// This code supersedes and replaces all information previously supplied.
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// NVIDIA Corporation products are not authorized for use as critical
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// components in life support devices or systems without express written approval of
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// NVIDIA Corporation.
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//
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// Copyright (c) 2008-2020 NVIDIA Corporation. All rights reserved.
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// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
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// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
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#ifndef PSFOUNDATION_PSALIGNEDMALLOC_H
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#define PSFOUNDATION_PSALIGNEDMALLOC_H
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#include "PsUserAllocated.h"
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/*!
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Allocate aligned memory.
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Alignment must be a power of 2!
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-- should be templated by a base allocator
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*/
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/** \brief NVidia namespace */
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namespace nv
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{
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/** \brief nvcloth namespace */
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namespace cloth
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{
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namespace ps
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{
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/**
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Allocator, which is used to access the global PxAllocatorCallback instance
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(used for dynamic data types template instantiation), which can align memory
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*/
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// SCS: AlignedMalloc with 3 params not found, seems not used on PC either
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// disabled for now to avoid GCC error
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template <uint32_t N, typename BaseAllocator = NonTrackingAllocator>
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class AlignedAllocator : public BaseAllocator
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{
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public:
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AlignedAllocator(const BaseAllocator& base = BaseAllocator()) : BaseAllocator(base)
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{
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}
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void* allocate(size_t size, const char* file, int line)
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{
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size_t pad = N - 1 + sizeof(size_t); // store offset for delete.
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uint8_t* base = reinterpret_cast<uint8_t*>(BaseAllocator::allocate(size + pad, file, line));
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if(!base)
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return NULL;
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uint8_t* ptr = reinterpret_cast<uint8_t*>(size_t(base + pad) & ~(size_t(N) - 1)); // aligned pointer, ensuring N
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// is a size_t
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// wide mask
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reinterpret_cast<size_t*>(ptr)[-1] = size_t(ptr - base); // store offset
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return ptr;
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}
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void deallocate(void* ptr)
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{
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if(ptr == NULL)
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return;
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uint8_t* base = reinterpret_cast<uint8_t*>(ptr) - reinterpret_cast<size_t*>(ptr)[-1];
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BaseAllocator::deallocate(base);
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}
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};
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} // namespace ps
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} // namespace cloth
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} // namespace nv
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#endif // #ifndef PSFOUNDATION_PSALIGNEDMALLOC_H
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