Space-Project/dependencies/physx-4.1/source/lowlevel/common/include/pipeline/PxcConstraintBlockStream.h
2021-01-16 17:11:39 +01:00

157 lines
4.9 KiB
C++

//
// 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) 2008-2019 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 PXC_CONSTRAINTBLOCKPOOL_H
#define PXC_CONSTRAINTBLOCKPOOL_H
#include "PxvConfig.h"
#include "PsArray.h"
#include "PsMutex.h"
#include "PxcNpMemBlockPool.h"
namespace physx
{
class PxsConstraintBlockManager
{
public:
PxsConstraintBlockManager(PxcNpMemBlockPool & blockPool):
mBlockPool(blockPool)
{
}
PX_FORCE_INLINE void reset()
{
mBlockPool.releaseConstraintBlocks(mTrackingArray);
}
PxcNpMemBlockArray mTrackingArray;
PxcNpMemBlockPool& mBlockPool;
private:
PxsConstraintBlockManager& operator=(const PxsConstraintBlockManager&);
};
class PxcConstraintBlockStream
{
PX_NOCOPY(PxcConstraintBlockStream)
public:
PxcConstraintBlockStream(PxcNpMemBlockPool & blockPool) :
mBlockPool (blockPool),
mBlock (NULL),
mUsed (0)
{
}
PX_FORCE_INLINE PxU8* reserve(PxU32 size, PxsConstraintBlockManager& manager)
{
size = (size+15)&~15;
if(size>PxcNpMemBlock::SIZE)
return mBlockPool.acquireExceptionalConstraintMemory(size);
if(mBlock == NULL || size+mUsed>PxcNpMemBlock::SIZE)
{
mBlock = mBlockPool.acquireConstraintBlock(manager.mTrackingArray);
PX_ASSERT(0==mBlock || mBlock->data == reinterpret_cast<PxU8*>(mBlock));
mUsed = size;
return reinterpret_cast<PxU8*>(mBlock);
}
PX_ASSERT(mBlock && mBlock->data == reinterpret_cast<PxU8*>(mBlock));
PxU8* PX_RESTRICT result = mBlock->data+mUsed;
mUsed += size;
return result;
}
PX_FORCE_INLINE void reset()
{
mBlock = NULL;
mUsed = 0;
}
PX_FORCE_INLINE PxcNpMemBlockPool& getMemBlockPool() { return mBlockPool; }
private:
PxcNpMemBlockPool& mBlockPool;
PxcNpMemBlock* mBlock; // current constraint block
PxU32 mUsed; // number of bytes used in constraint block
//Tracking peak allocations
PxU32 mPeakUsed;
};
class PxcContactBlockStream
{
PX_NOCOPY(PxcContactBlockStream)
public:
PxcContactBlockStream(PxcNpMemBlockPool & blockPool):
mBlockPool(blockPool),
mBlock(NULL),
mUsed(0)
{
}
PX_FORCE_INLINE PxU8* reserve(PxU32 size)
{
size = (size+15)&~15;
if(size>PxcNpMemBlock::SIZE)
return mBlockPool.acquireExceptionalConstraintMemory(size);
PX_ASSERT(size <= PxcNpMemBlock::SIZE);
if(mBlock == NULL || size+mUsed>PxcNpMemBlock::SIZE)
{
mBlock = mBlockPool.acquireContactBlock();
PX_ASSERT(0==mBlock || mBlock->data == reinterpret_cast<PxU8*>(mBlock));
mUsed = size;
return reinterpret_cast<PxU8*>(mBlock);
}
PX_ASSERT(mBlock && mBlock->data == reinterpret_cast<PxU8*>(mBlock));
PxU8* PX_RESTRICT result = mBlock->data+mUsed;
mUsed += size;
return result;
}
PX_FORCE_INLINE void reset()
{
mBlock = NULL;
mUsed = 0;
}
PX_FORCE_INLINE PxcNpMemBlockPool& getMemBlockPool() { return mBlockPool; }
private:
PxcNpMemBlockPool& mBlockPool;
PxcNpMemBlock* mBlock; // current constraint block
PxU32 mUsed; // number of bytes used in constraint block
};
}
#endif