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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.
#include "PxcNpCacheStreamPair.h"
#include "PsUserAllocated.h"
#include "PxcNpMemBlockPool.h"
using namespace physx;
void PxcNpCacheStreamPair::reset()
{
mBlock = NULL;
mUsed = 0;
}
PxcNpCacheStreamPair::PxcNpCacheStreamPair(PxcNpMemBlockPool& blockPool):
mBlockPool(blockPool), mBlock(NULL), mUsed(0)
{
}
// reserve can fail and return null. Read should never fail
PxU8* PxcNpCacheStreamPair::reserve(PxU32 size)
{
size = (size+15)&~15;
if(size>PxcNpMemBlock::SIZE)
{
return reinterpret_cast<PxU8*>(-1);
}
if(mBlock == NULL || mUsed + size > PxcNpMemBlock::SIZE)
{
mBlock = mBlockPool.acquireNpCacheBlock();
mUsed = 0;
}
PxU8* ptr;
if(mBlock == NULL)
ptr = 0;
else
{
ptr = mBlock->data+mUsed;
mUsed += size;
}
return ptr;
}
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