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// This code contains NVIDIA Confidential Information and is disclosed to you
// under a form of NVIDIA software license agreement provided separately to you.
//
// Notice
// NVIDIA Corporation and its licensors retain all intellectual property and
// proprietary rights in and to this software and related documentation and
// any modifications thereto. Any use, reproduction, disclosure, or
// distribution of this software and related documentation without an express
// license agreement from NVIDIA Corporation is strictly prohibited.
//
// ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES
// NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO
// THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT,
// MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.
//
// Information and code furnished is believed to be accurate and reliable.
// However, NVIDIA Corporation assumes no responsibility for the consequences of use of such
// information or for any infringement of patents or other rights of third parties that may
// result from its use. No license is granted by implication or otherwise under any patent
// or patent rights of NVIDIA Corporation. Details are subject to change without notice.
// This code supersedes and replaces all information previously supplied.
// NVIDIA Corporation products are not authorized for use as critical
// components in life support devices or systems without express written approval of
// NVIDIA Corporation.
//
// 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_PSSLIST_H
#define PSFOUNDATION_PSSLIST_H
#include "foundation/Px.h"
#include "foundation/PxAssert.h"
#include "PsAlignedMalloc.h"
#if PX_P64_FAMILY
#define PX_SLIST_ALIGNMENT 16
#else
#define PX_SLIST_ALIGNMENT 8
#endif
namespace physx
{
namespace shdfnd
{
#if PX_VC
#pragma warning(push)
#pragma warning(disable : 4324) // Padding was added at the end of a structure because of a __declspec(align) value.
#endif
#if !PX_GCC_FAMILY
__declspec(align(PX_SLIST_ALIGNMENT))
#endif
class SListEntry
{
friend struct SListImpl;
public:
SListEntry() : mNext(NULL)
{
PX_ASSERT((size_t(this) & (PX_SLIST_ALIGNMENT - 1)) == 0);
}
// Only use on elements returned by SList::flush()
// because the operation is not atomic.
SListEntry* next()
{
return mNext;
}
private:
SListEntry* mNext;
}
#if PX_GCC_FAMILY
__attribute__((aligned(PX_SLIST_ALIGNMENT)));
#else
;
#endif
#if PX_VC
#pragma warning(pop)
#endif
// template-less implementation
struct PX_FOUNDATION_API SListImpl
{
SListImpl();
~SListImpl();
void push(SListEntry* entry);
SListEntry* pop();
SListEntry* flush();
static uint32_t getSize();
};
template <typename Alloc = ReflectionAllocator<SListImpl> >
class SListT : protected Alloc
{
public:
SListT(const Alloc& alloc = Alloc()) : Alloc(alloc)
{
mImpl = reinterpret_cast<SListImpl*>(Alloc::allocate(SListImpl::getSize(), __FILE__, __LINE__));
PX_ASSERT((size_t(mImpl) & (PX_SLIST_ALIGNMENT - 1)) == 0);
PX_PLACEMENT_NEW(mImpl, SListImpl)();
}
~SListT()
{
mImpl->~SListImpl();
Alloc::deallocate(mImpl);
}
// pushes a new element to the list
void push(SListEntry& entry)
{
mImpl->push(&entry);
}
// pops an element from the list
SListEntry* pop()
{
return mImpl->pop();
}
// removes all items from list, returns pointer to first element
SListEntry* flush()
{
return mImpl->flush();
}
private:
SListImpl* mImpl;
};
typedef SListT<> SList;
} // namespace shdfnd
} // namespace physx
#endif // #ifndef PSFOUNDATION_PSSLIST_H
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