141 lines
3.6 KiB
C++
141 lines
3.6 KiB
C++
//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of NVIDIA CORPORATION nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Copyright (c) 2008-2019 NVIDIA Corporation. All rights reserved.
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// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
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// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
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#ifndef PSFOUNDATION_PSSLIST_H
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#define PSFOUNDATION_PSSLIST_H
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#include "foundation/Px.h"
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#include "foundation/PxAssert.h"
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#include "PsAlignedMalloc.h"
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#if PX_P64_FAMILY
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#define PX_SLIST_ALIGNMENT 16
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#else
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#define PX_SLIST_ALIGNMENT 8
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#endif
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namespace physx
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{
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namespace shdfnd
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{
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#if PX_VC
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#pragma warning(push)
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#pragma warning(disable : 4324) // Padding was added at the end of a structure because of a __declspec(align) value.
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#endif
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#if !PX_GCC_FAMILY
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__declspec(align(PX_SLIST_ALIGNMENT))
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#endif
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class SListEntry
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{
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friend struct SListImpl;
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public:
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SListEntry() : mNext(NULL)
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{
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PX_ASSERT((size_t(this) & (PX_SLIST_ALIGNMENT - 1)) == 0);
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}
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// Only use on elements returned by SList::flush()
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// because the operation is not atomic.
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SListEntry* next()
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{
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return mNext;
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}
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private:
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SListEntry* mNext;
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}
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#if PX_GCC_FAMILY
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__attribute__((aligned(PX_SLIST_ALIGNMENT)));
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#else
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;
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#endif
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#if PX_VC
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#pragma warning(pop)
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#endif
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// template-less implementation
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struct PX_FOUNDATION_API SListImpl
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{
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SListImpl();
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~SListImpl();
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void push(SListEntry* entry);
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SListEntry* pop();
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SListEntry* flush();
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static uint32_t getSize();
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};
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template <typename Alloc = ReflectionAllocator<SListImpl> >
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class SListT : protected Alloc
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{
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public:
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SListT(const Alloc& alloc = Alloc()) : Alloc(alloc)
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{
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mImpl = reinterpret_cast<SListImpl*>(Alloc::allocate(SListImpl::getSize(), __FILE__, __LINE__));
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PX_ASSERT((size_t(mImpl) & (PX_SLIST_ALIGNMENT - 1)) == 0);
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PX_PLACEMENT_NEW(mImpl, SListImpl)();
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}
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~SListT()
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{
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mImpl->~SListImpl();
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Alloc::deallocate(mImpl);
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}
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// pushes a new element to the list
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void push(SListEntry& entry)
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{
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mImpl->push(&entry);
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}
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// pops an element from the list
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SListEntry* pop()
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{
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return mImpl->pop();
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}
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// removes all items from list, returns pointer to first element
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SListEntry* flush()
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{
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return mImpl->flush();
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}
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private:
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SListImpl* mImpl;
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};
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typedef SListT<> SList;
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} // namespace shdfnd
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} // namespace physx
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#endif // #ifndef PSFOUNDATION_PSSLIST_H
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