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