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-rw-r--r-- | libraries/irrlicht-1.8/include/irrAllocator.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/libraries/irrlicht-1.8/include/irrAllocator.h b/libraries/irrlicht-1.8/include/irrAllocator.h new file mode 100644 index 0000000..648c410 --- /dev/null +++ b/libraries/irrlicht-1.8/include/irrAllocator.h | |||
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1 | // Copyright (C) 2002-2012 Nikolaus Gebhardt | ||
2 | // This file is part of the "Irrlicht Engine" and the "irrXML" project. | ||
3 | // For conditions of distribution and use, see copyright notice in irrlicht.h and irrXML.h | ||
4 | |||
5 | #ifndef __IRR_ALLOCATOR_H_INCLUDED__ | ||
6 | #define __IRR_ALLOCATOR_H_INCLUDED__ | ||
7 | |||
8 | #include "irrTypes.h" | ||
9 | #include <new> | ||
10 | // necessary for older compilers | ||
11 | #include <memory.h> | ||
12 | |||
13 | namespace irr | ||
14 | { | ||
15 | namespace core | ||
16 | { | ||
17 | |||
18 | #ifdef DEBUG_CLIENTBLOCK | ||
19 | #undef DEBUG_CLIENTBLOCK | ||
20 | #define DEBUG_CLIENTBLOCK new | ||
21 | #endif | ||
22 | |||
23 | //! Very simple allocator implementation, containers using it can be used across dll boundaries | ||
24 | template<typename T> | ||
25 | class irrAllocator | ||
26 | { | ||
27 | public: | ||
28 | |||
29 | //! Destructor | ||
30 | virtual ~irrAllocator() {} | ||
31 | |||
32 | //! Allocate memory for an array of objects | ||
33 | T* allocate(size_t cnt) | ||
34 | { | ||
35 | return (T*)internal_new(cnt* sizeof(T)); | ||
36 | } | ||
37 | |||
38 | //! Deallocate memory for an array of objects | ||
39 | void deallocate(T* ptr) | ||
40 | { | ||
41 | internal_delete(ptr); | ||
42 | } | ||
43 | |||
44 | //! Construct an element | ||
45 | void construct(T* ptr, const T&e) | ||
46 | { | ||
47 | new ((void*)ptr) T(e); | ||
48 | } | ||
49 | |||
50 | //! Destruct an element | ||
51 | void destruct(T* ptr) | ||
52 | { | ||
53 | ptr->~T(); | ||
54 | } | ||
55 | |||
56 | protected: | ||
57 | |||
58 | virtual void* internal_new(size_t cnt) | ||
59 | { | ||
60 | return operator new(cnt); | ||
61 | } | ||
62 | |||
63 | virtual void internal_delete(void* ptr) | ||
64 | { | ||
65 | operator delete(ptr); | ||
66 | } | ||
67 | |||
68 | }; | ||
69 | |||
70 | |||
71 | //! Fast allocator, only to be used in containers inside the same memory heap. | ||
72 | /** Containers using it are NOT able to be used it across dll boundaries. Use this | ||
73 | when using in an internal class or function or when compiled into a static lib */ | ||
74 | template<typename T> | ||
75 | class irrAllocatorFast | ||
76 | { | ||
77 | public: | ||
78 | |||
79 | //! Allocate memory for an array of objects | ||
80 | T* allocate(size_t cnt) | ||
81 | { | ||
82 | return (T*)operator new(cnt* sizeof(T)); | ||
83 | } | ||
84 | |||
85 | //! Deallocate memory for an array of objects | ||
86 | void deallocate(T* ptr) | ||
87 | { | ||
88 | operator delete(ptr); | ||
89 | } | ||
90 | |||
91 | //! Construct an element | ||
92 | void construct(T* ptr, const T&e) | ||
93 | { | ||
94 | new ((void*)ptr) T(e); | ||
95 | } | ||
96 | |||
97 | //! Destruct an element | ||
98 | void destruct(T* ptr) | ||
99 | { | ||
100 | ptr->~T(); | ||
101 | } | ||
102 | }; | ||
103 | |||
104 | |||
105 | |||
106 | #ifdef DEBUG_CLIENTBLOCK | ||
107 | #undef DEBUG_CLIENTBLOCK | ||
108 | #define DEBUG_CLIENTBLOCK new( _CLIENT_BLOCK, __FILE__, __LINE__) | ||
109 | #endif | ||
110 | |||
111 | //! defines an allocation strategy | ||
112 | enum eAllocStrategy | ||
113 | { | ||
114 | ALLOC_STRATEGY_SAFE = 0, | ||
115 | ALLOC_STRATEGY_DOUBLE = 1, | ||
116 | ALLOC_STRATEGY_SQRT = 2 | ||
117 | }; | ||
118 | |||
119 | |||
120 | } // end namespace core | ||
121 | } // end namespace irr | ||
122 | |||
123 | #endif | ||
124 | |||