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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 PX_PHYSICS_NP_PTRTABLESTORAGEMANAGER_H
#define PX_PHYSICS_NP_PTRTABLESTORAGEMANAGER_H
#include "CmPhysXCommon.h"
#include "PsMutex.h"
#include "PsUserAllocated.h"
#include "CmPtrTable.h"
#include "PsBitUtils.h"
namespace physx
{
class NpPtrTableStorageManager : public Cm::PtrTableStorageManager, public Ps::UserAllocated
{
PX_NOCOPY(NpPtrTableStorageManager)
public:
NpPtrTableStorageManager() {}
~NpPtrTableStorageManager() {}
void** allocate(PxU32 capacity)
{
PX_ASSERT(Ps::isPowerOfTwo(capacity));
Ps::Mutex::ScopedLock lock(mMutex);
return capacity<=4*sizeof(void*) ? reinterpret_cast<void**>(mPool4.construct())
: capacity<=16*sizeof(void*) ? reinterpret_cast<void**>(mPool16.construct())
: capacity<=64*sizeof(void*) ? reinterpret_cast<void**>(mPool64.construct())
: reinterpret_cast<void**>(PX_ALLOC(capacity*sizeof(void*), "CmPtrTable pointer array"));
}
void deallocate(void** addr, PxU32 capacity)
{
PX_ASSERT(Ps::isPowerOfTwo(capacity));
Ps::Mutex::ScopedLock lock(mMutex);
if(capacity<=4*sizeof(void*)) mPool4.destroy(reinterpret_cast< PtrBlock<4>*>(addr));
else if(capacity<=16*sizeof(void*)) mPool16.destroy(reinterpret_cast< PtrBlock<16>*>(addr));
else if(capacity<=64*sizeof(void*)) mPool64.destroy(reinterpret_cast< PtrBlock<64>*>(addr));
else PX_FREE(addr);
}
// originalCapacity is the only way we know which pool the alloc request belongs to,
// so if those are no longer going to match, we need to realloc.
bool canReuse(PxU32 originalCapacity, PxU32 newCapacity)
{
PX_ASSERT(Ps::isPowerOfTwo(originalCapacity));
PX_ASSERT(Ps::isPowerOfTwo(newCapacity));
return poolId(originalCapacity) == poolId(newCapacity) && newCapacity<=64;
}
private:
Ps::Mutex mMutex;
int poolId(PxU32 size)
{
return size<=4 ? 0
: size<=16 ? 1
: size<=64 ? 2
: 3;
}
template<int N> class PtrBlock { void* ptr[N]; };
Ps::Pool2<PtrBlock<4>, 4096 > mPool4;
Ps::Pool2<PtrBlock<16>, 4096 > mPool16;
Ps::Pool2<PtrBlock<64>, 4096 > mPool64;
};
}
#endif
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