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26// Copyright (c) 2008-2021 NVIDIA Corporation. All rights reserved.
27// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
28// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
29
30#ifndef PSFOUNDATION_PSSLIST_H
31#define PSFOUNDATION_PSSLIST_H
32
33#include "foundation/Px.h"
34#include "foundation/PxAssert.h"
35#include "PsAlignedMalloc.h"
36
37#if PX_P64_FAMILY
38#define PX_SLIST_ALIGNMENT 16
39#else
40#define PX_SLIST_ALIGNMENT 8
41#endif
42
43namespace physx
44{
45namespace shdfnd
46{
47
48#if PX_VC
49#pragma warning(push)
50#pragma warning(disable : 4324) // Padding was added at the end of a structure because of a __declspec(align) value.
51#endif
52
53#if !PX_GCC_FAMILY
54__declspec(align(PX_SLIST_ALIGNMENT))
55#endif
56 class SListEntry
57{
58 friend struct SListImpl;
59
60 public:
61 SListEntry() : mNext(NULL)
62 {
63 PX_ASSERT((size_t(this) & (PX_SLIST_ALIGNMENT - 1)) == 0);
64 }
65
66 // Only use on elements returned by SList::flush()
67 // because the operation is not atomic.
68 SListEntry* next()
69 {
70 return mNext;
71 }
72
73 private:
74 SListEntry* mNext;
75}
76#if PX_GCC_FAMILY
77__attribute__((aligned(PX_SLIST_ALIGNMENT)));
78#else
79;
80#endif
81
82#if PX_VC
83#pragma warning(pop)
84#endif
85
86// template-less implementation
87struct PX_FOUNDATION_API SListImpl
88{
89 SListImpl();
90 ~SListImpl();
91 void push(SListEntry* entry);
92 SListEntry* pop();
93 SListEntry* flush();
94 static uint32_t getSize();
95};
96
97template <typename Alloc = ReflectionAllocator<SListImpl> >
98class SListT : protected Alloc
99{
100 public:
101 SListT(const Alloc& alloc = Alloc()) : Alloc(alloc)
102 {
103 mImpl = reinterpret_cast<SListImpl*>(Alloc::allocate(SListImpl::getSize(), __FILE__, __LINE__));
104 PX_ASSERT((size_t(mImpl) & (PX_SLIST_ALIGNMENT - 1)) == 0);
105 PX_PLACEMENT_NEW(mImpl, SListImpl)();
106 }
107 ~SListT()
108 {
109 mImpl->~SListImpl();
110 Alloc::deallocate(mImpl);
111 }
112
113 // pushes a new element to the list
114 void push(SListEntry& entry)
115 {
116 mImpl->push(entry: &entry);
117 }
118
119 // pops an element from the list
120 SListEntry* pop()
121 {
122 return mImpl->pop();
123 }
124
125 // removes all items from list, returns pointer to first element
126 SListEntry* flush()
127 {
128 return mImpl->flush();
129 }
130
131 private:
132 SListImpl* mImpl;
133};
134
135typedef SListT<> SList;
136
137} // namespace shdfnd
138} // namespace physx
139
140#endif // #ifndef PSFOUNDATION_PSSLIST_H
141

source code of qtquick3dphysics/src/3rdparty/PhysX/source/foundation/include/PsSList.h