92 lines
2.9 KiB
C++
92 lines
2.9 KiB
C++
//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of NVIDIA CORPORATION nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Copyright (c) 2008-2019 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_PSINLINEALLOCATOR_H
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#define PSFOUNDATION_PSINLINEALLOCATOR_H
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#include "PsUserAllocated.h"
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namespace physx
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{
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namespace shdfnd
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{
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// this is used by the array class to allocate some space for a small number
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// of objects along with the metadata
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template <uint32_t N, typename BaseAllocator>
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class InlineAllocator : private BaseAllocator
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{
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public:
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InlineAllocator(const PxEMPTY v) : BaseAllocator(v)
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{
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}
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InlineAllocator(const BaseAllocator& alloc = BaseAllocator()) : BaseAllocator(alloc), mBufferUsed(false)
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{
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}
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InlineAllocator(const InlineAllocator& aloc) : BaseAllocator(aloc), mBufferUsed(false)
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{
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}
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void* allocate(uint32_t size, const char* filename, int line)
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{
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if(!mBufferUsed && size <= N)
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{
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mBufferUsed = true;
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return mBuffer;
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}
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return BaseAllocator::allocate(size, filename, line);
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}
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void deallocate(void* ptr)
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{
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if(ptr == mBuffer)
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mBufferUsed = false;
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else
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BaseAllocator::deallocate(ptr);
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}
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PX_FORCE_INLINE uint8_t* getInlineBuffer()
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{
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return mBuffer;
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}
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PX_FORCE_INLINE bool isBufferUsed() const
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{
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return mBufferUsed;
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}
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protected:
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uint8_t mBuffer[N];
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bool mBufferUsed;
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};
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} // namespace shdfnd
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} // namespace physx
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#endif // #ifndef PSFOUNDATION_PSINLINEALLOCATOR_H
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