Box2D  2.4.1
A 2D physics engine for games
b2_block_allocator.h
1 // MIT License
2 
3 // Copyright (c) 2019 Erin Catto
4 
5 // Permission is hereby granted, free of charge, to any person obtaining a copy
6 // of this software and associated documentation files (the "Software"), to deal
7 // in the Software without restriction, including without limitation the rights
8 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 // copies of the Software, and to permit persons to whom the Software is
10 // furnished to do so, subject to the following conditions:
11 
12 // The above copyright notice and this permission notice shall be included in all
13 // copies or substantial portions of the Software.
14 
15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 // SOFTWARE.
22 
23 #ifndef B2_BLOCK_ALLOCATOR_H
24 #define B2_BLOCK_ALLOCATOR_H
25 
26 #include "b2_api.h"
27 #include "b2_settings.h"
28 
29 const int32 b2_blockSizeCount = 14;
30 
31 struct b2Block;
32 struct b2Chunk;
33 
37 class B2_API b2BlockAllocator
38 {
39 public:
42 
44  void* Allocate(int32 size);
45 
47  void Free(void* p, int32 size);
48 
49  void Clear();
50 
51 private:
52 
53  b2Chunk* m_chunks;
54  int32 m_chunkCount;
55  int32 m_chunkSpace;
56 
57  b2Block* m_freeLists[b2_blockSizeCount];
58 };
59 
60 #endif
b2_settings.h
b2BlockAllocator
Definition: b2_block_allocator.h:37