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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_PSINLINEALLOCATOR_H
31#define PSFOUNDATION_PSINLINEALLOCATOR_H
32
33#include "PsUserAllocated.h"
34
35namespace physx
36{
37namespace shdfnd
38{
39// this is used by the array class to allocate some space for a small number
40// of objects along with the metadata
41template <uint32_t N, typename BaseAllocator>
42class InlineAllocator : private BaseAllocator
43{
44 public:
45 InlineAllocator(const PxEMPTY v) : BaseAllocator(v)
46 {
47 }
48
49 InlineAllocator(const BaseAllocator& alloc = BaseAllocator()) : BaseAllocator(alloc), mBufferUsed(false)
50 {
51 }
52
53 InlineAllocator(const InlineAllocator& aloc) : BaseAllocator(aloc), mBufferUsed(false)
54 {
55 }
56
57 void* allocate(uint32_t size, const char* filename, int line)
58 {
59 if(!mBufferUsed && size <= N)
60 {
61 mBufferUsed = true;
62 return mBuffer;
63 }
64 return BaseAllocator::allocate(size, filename, line);
65 }
66
67 void deallocate(void* ptr)
68 {
69 if(ptr == mBuffer)
70 mBufferUsed = false;
71 else
72 BaseAllocator::deallocate(ptr);
73 }
74
75 PX_FORCE_INLINE uint8_t* getInlineBuffer()
76 {
77 return mBuffer;
78 }
79 PX_FORCE_INLINE bool isBufferUsed() const
80 {
81 return mBufferUsed;
82 }
83
84 protected:
85 uint8_t mBuffer[N];
86 bool mBufferUsed;
87};
88} // namespace shdfnd
89} // namespace physx
90
91#endif // #ifndef PSFOUNDATION_PSINLINEALLOCATOR_H
92

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