2 * Copyright (c) 2006-2007 Erin Catto http://www.gphysics.com
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8 * including commercial applications, and to alter it and redistribute it
9 * freely, subject to the following restrictions:
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11 * claim that you wrote the original software. If you use this software
12 * in a product, an acknowledgment in the product documentation would be
13 * appreciated but is not required.
14 * 2. Altered source versions must be plainly marked as such, and must not be
15 * misrepresented as being the original software.
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19 #ifndef B2_STACK_ALLOCATOR_H
20 #define B2_STACK_ALLOCATOR_H
22 #include "b2Settings.h"
24 const int32 b2_stackSize = 100 * 1024; // 100k
25 const int32 b2_maxStackEntries = 32;
34 // This is a stack allocator used for fast per step allocations.
35 // You must nest allocate/free pairs. The code will assert
36 // if you try to interleave multiple allocate/free pairs.
37 class b2StackAllocator
43 void* Allocate(int32 size);
46 int32 GetMaxAllocation() const;
50 char m_data[b2_stackSize];
54 int32 m_maxAllocation;
56 b2StackEntry m_entries[b2_maxStackEntries];