Bullet Collision Detection & Physics Library: gim_memory.cpp Source File

Bullet Collision Detection & Physics Library

gim_memory.cpp
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1 /*
2 -----------------------------------------------------------------------------
3 This source file is part of GIMPACT Library.
4
5 For the latest info, see http://gimpact.sourceforge.net/
6
7 Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
8 email: projectileman@yahoo.com
9
10 This library is free software; you can redistribute it and/or
11 modify it under the terms of EITHER:
12 (1) The GNU Lesser General Public License as published by the Free
13 Software Foundation; either version 2.1 of the License, or (at
14 your option) any later version. The text of the GNU Lesser
15 General Public License is included with this library in the
16 file GIMPACT-LICENSE-LGPL.TXT.
17 (2) The BSD-style license that is included with this library in
18 the file GIMPACT-LICENSE-BSD.TXT.
19 (3) The zlib/libpng license that is included with this library in
20 the file GIMPACT-LICENSE-ZLIB.TXT.
21
22 This library is distributed in the hope that it will be useful,
23 but WITHOUT ANY WARRANTY; without even the implied warranty of
24 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
25 GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
26
27 -----------------------------------------------------------------------------
28 */
29
30
31 #include "gim_memory.h"
32 #include "stdlib.h"
33
34 #ifdef GIM_SIMD_MEMORY
35 #include "LinearMath/btAlignedAllocator.h"
36 #endif
37
38 static gim_alloc_function *g_allocfn = 0;
39 static gim_alloca_function *g_allocafn = 0;
40 static gim_realloc_function *g_reallocfn = 0;
41 static gim_free_function *g_freefn = 0;
42
43 void gim_set_alloc_handler (gim_alloc_function *fn)
44 {
45 g_allocfn = fn;
46 }
47
48 void gim_set_alloca_handler (gim_alloca_function *fn)
49 {
50 g_allocafn = fn;
51 }
52
53 void gim_set_realloc_handler (gim_realloc_function *fn)
54 {
55 g_reallocfn = fn;
56 }
57
58 void gim_set_free_handler (gim_free_function *fn)
59 {
60 g_freefn = fn;
61 }
62
63 gim_alloc_function *gim_get_alloc_handler()
64 {
65 return g_allocfn;
66 }
67
68 gim_alloca_function *gim_get_alloca_handler()
69 {
70 return g_allocafn;
71 }
72
73
74 gim_realloc_function *gim_get_realloc_handler ()
75 {
76 return g_reallocfn;
77 }
78
79
80 gim_free_function *gim_get_free_handler ()
81 {
82 return g_freefn;
83 }
84
85
86 void * gim_alloc(size_t size)
87 {
88 void * ptr;
89 if (g_allocfn)
90 {
91 ptr = g_allocfn(size);
92 }
93 else
94 {
95 #ifdef GIM_SIMD_MEMORY
96 ptr = btAlignedAlloc(size,16);
97 #else
98 ptr = malloc(size);
99 #endif
100 }
101 return ptr;
102 }
103
104 void * gim_alloca(size_t size)
105 {
106 if (g_allocafn) return g_allocafn(size); else return gim_alloc(size);
107 }
108
109
110 void * gim_realloc(void *ptr, size_t oldsize, size_t newsize)
111 {
112 void * newptr = gim_alloc(newsize);
113 size_t copysize = oldsize<newsize?oldsize:newsize;
114 gim_simd_memcpy(newptr,ptr,copysize);
115 gim_free(ptr);
116 return newptr;
117 }
118
119 void gim_free(void *ptr)
120 {
121 if (!ptr) return;
122 if (g_freefn)
123 {
124 g_freefn(ptr);
125 }
126 else
127 {
128 #ifdef GIM_SIMD_MEMORY
129 btAlignedFree(ptr);
130 #else
131 free(ptr);
132 #endif
133 }
134 }
135
gim_simd_memcpy
void gim_simd_memcpy(void *dst, const void *src, size_t copysize)
Definition: gim_memory.h:130
g_reallocfn
static gim_realloc_function * g_reallocfn
Definition: gim_memory.cpp:40
gim_set_free_handler
void gim_set_free_handler(gim_free_function *fn)
Definition: gim_memory.cpp:58
gim_realloc_function
void * gim_realloc_function(void *ptr, size_t oldsize, size_t newsize)
Definition: gim_memory.h:93
gim_get_realloc_handler
gim_realloc_function * gim_get_realloc_handler()
Definition: gim_memory.cpp:74
g_allocfn
static gim_alloc_function * g_allocfn
Definition: gim_memory.cpp:38
size
static DBVT_INLINE btScalar size(const btDbvtVolume &a)
Definition: btDbvt.cpp:52
gim_get_free_handler
gim_free_function * gim_get_free_handler()
Definition: gim_memory.cpp:80
gim_set_realloc_handler
void gim_set_realloc_handler(gim_realloc_function *fn)
Definition: gim_memory.cpp:53
btAlignedAllocator.h
g_allocafn
static gim_alloca_function * g_allocafn
Definition: gim_memory.cpp:39
gim_free
void gim_free(void *ptr)
Definition: gim_memory.cpp:119
gim_set_alloca_handler
void gim_set_alloca_handler(gim_alloca_function *fn)
Definition: gim_memory.cpp:48
gim_free_function
void gim_free_function(void *ptr)
Definition: gim_memory.h:94
gim_alloca_function
void * gim_alloca_function(size_t size)
Definition: gim_memory.h:92
btAlignedFree
#define btAlignedFree(ptr)
Definition: btAlignedAllocator.h:48
gim_memory.h
gim_get_alloc_handler
gim_alloc_function * gim_get_alloc_handler()
get current memory management functions.
Definition: gim_memory.cpp:63
gim_alloca
void * gim_alloca(size_t size)
Definition: gim_memory.cpp:104
gim_realloc
void * gim_realloc(void *ptr, size_t oldsize, size_t newsize)
Definition: gim_memory.cpp:110
gim_set_alloc_handler
void gim_set_alloc_handler(gim_alloc_function *fn)
Memory Function Handlers set new memory management functions.
Definition: gim_memory.cpp:43
gim_alloc_function
void * gim_alloc_function(size_t size)
Function prototypes to allocate and free memory.
Definition: gim_memory.h:91
gim_alloc
void * gim_alloc(size_t size)
Standar Memory functions.
Definition: gim_memory.cpp:86
btAlignedAlloc
#define btAlignedAlloc(size, alignment)
Definition: btAlignedAllocator.h:47
gim_get_alloca_handler
gim_alloca_function * gim_get_alloca_handler()
Definition: gim_memory.cpp:68
g_freefn
static gim_free_function * g_freefn
Definition: gim_memory.cpp:41