Blender  V3.3
btGenericPoolAllocator.h
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1 
6 /*
7 Bullet Continuous Collision Detection and Physics Library
8 Copyright (c) 2003-2006 Erwin Coumans http://continuousphysics.com/Bullet/
9 
10 This software is provided 'as-is', without any express or implied warranty.
11 In no event will the authors be held liable for any damages arising from the use of this software.
12 Permission is granted to anyone to use this software for any purpose,
13 including commercial applications, and to alter it and redistribute it freely,
14 subject to the following restrictions:
15 
16 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
17 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
18 3. This notice may not be removed or altered from any source distribution.
19 */
20 
21 #ifndef BT_GENERIC_POOL_ALLOCATOR_H
22 #define BT_GENERIC_POOL_ALLOCATOR_H
23 
24 #include <limits.h>
25 #include <stdio.h>
26 #include <string.h>
28 
29 #define BT_UINT_MAX UINT_MAX
30 #define BT_DEFAULT_MAX_POOLS 16
31 
34 {
35 public:
36  unsigned char *m_pool; //[m_element_size*m_max_element_count];
37  size_t *m_free_nodes; //[m_max_element_count];//! free nodes
38  size_t *m_allocated_sizes; //[m_max_element_count];//! Number of elements allocated per node
41 
42 protected:
45 
46  size_t allocate_from_free_nodes(size_t num_elements);
47  size_t allocate_from_pool(size_t num_elements);
48 
49 public:
50  void init_pool(size_t element_size, size_t element_count);
51 
52  void end_pool();
53 
54  btGenericMemoryPool(size_t element_size, size_t element_count)
55  {
56  init_pool(element_size, element_count);
57  }
58 
60  {
61  end_pool();
62  }
63 
64  inline size_t get_pool_capacity()
65  {
67  }
68 
69  inline size_t gem_element_size()
70  {
71  return m_element_size;
72  }
73 
74  inline size_t get_max_element_count()
75  {
76  return m_max_element_count;
77  }
78 
79  inline size_t get_allocated_count()
80  {
81  return m_allocated_count;
82  }
83 
84  inline size_t get_free_positions_count()
85  {
86  return m_free_nodes_count;
87  }
88 
89  inline void *get_element_data(size_t element_index)
90  {
91  return &m_pool[element_index * m_element_size];
92  }
93 
95 
98  void *allocate(size_t size_bytes);
99 
100  bool freeMemory(void *pointer);
101 };
102 
104 
108 {
109 protected:
112 
113 public:
115  size_t m_pool_count;
116 
117  inline size_t get_pool_capacity()
118  {
120  }
121 
122 protected:
123  // creates a pool
125 
126  void *failback_alloc(size_t size_bytes);
127 
128  bool failback_free(void *pointer);
129 
130 public:
131  btGenericPoolAllocator(size_t pool_element_size, size_t pool_element_count)
132  {
133  m_pool_count = 0;
134  m_pool_element_size = pool_element_size;
135  m_pool_element_count = pool_element_count;
136  }
137 
138  virtual ~btGenericPoolAllocator();
139 
141 
144  void *allocate(size_t size_bytes);
145 
146  bool freeMemory(void *pointer);
147 };
148 
149 void *btPoolAlloc(size_t size);
150 void *btPoolRealloc(void *ptr, size_t oldsize, size_t newsize);
151 void btPoolFree(void *ptr);
152 
153 #endif
static DBVT_INLINE btScalar size(const btDbvtVolume &a)
Definition: btDbvt.cpp:52
void * btPoolAlloc(size_t size)
#define BT_DEFAULT_MAX_POOLS
void btPoolFree(void *ptr)
void * btPoolRealloc(void *ptr, size_t oldsize, size_t newsize)
Generic Pool class.
btGenericMemoryPool(size_t element_size, size_t element_count)
bool freeMemory(void *pointer)
size_t allocate_from_pool(size_t num_elements)
void init_pool(size_t element_size, size_t element_count)
void * get_element_data(size_t element_index)
size_t allocate_from_free_nodes(size_t num_elements)
*************** btGenericMemoryPool ******************‍///////////
void * allocate(size_t size_bytes)
Allocates memory in pool.
Generic Allocator with pools.
btGenericMemoryPool * push_new_pool()
virtual ~btGenericPoolAllocator()
*******************! btGenericPoolAllocator *******************!///
btGenericMemoryPool * m_pools[BT_DEFAULT_MAX_POOLS]
void * failback_alloc(size_t size_bytes)
bool failback_free(void *pointer)
btGenericPoolAllocator(size_t pool_element_size, size_t pool_element_count)
void * allocate(size_t size_bytes)
Allocates memory in pool.
PointerRNA * ptr
Definition: wm_files.c:3480