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

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gim_memory.cpp
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1/*
2-----------------------------------------------------------------------------
3This source file is part of GIMPACT Library.
4
5For the latest info, see http://gimpact.sourceforge.net/
6
7Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
8email: 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#include "gim_memory.h"
31#include "stdlib.h"
32
33#ifdef GIM_SIMD_MEMORY
34#include "LinearMath/btAlignedAllocator.h"
35#endif
36
37 static gim_alloc_function *g_allocfn = 0;
38 static gim_alloca_function *g_allocafn = 0;
39 static gim_realloc_function *g_reallocfn = 0;
40 static gim_free_function *g_freefn = 0;
41
42 void gim_set_alloc_handler(gim_alloc_function *fn)
43{
44 g_allocfn = fn;
45}
46
47 void gim_set_alloca_handler(gim_alloca_function *fn)
48{
49 g_allocafn = fn;
50}
51
52 void gim_set_realloc_handler(gim_realloc_function *fn)
53{
54 g_reallocfn = fn;
55}
56
57 void gim_set_free_handler(gim_free_function *fn)
58{
59 g_freefn = fn;
60}
61
62 gim_alloc_function *gim_get_alloc_handler()
63{
64 return g_allocfn;
65}
66
67 gim_alloca_function *gim_get_alloca_handler()
68{
69 return g_allocafn;
70}
71
72 gim_realloc_function *gim_get_realloc_handler()
73{
74 return g_reallocfn;
75}
76
77 gim_free_function *gim_get_free_handler()
78{
79 return g_freefn;
80}
81
82 void *gim_alloc(size_t size)
83{
84 void *ptr;
85 if (g_allocfn)
86 {
87 ptr = g_allocfn(size);
88 }
89 else
90 {
91#ifdef GIM_SIMD_MEMORY
92 ptr = btAlignedAlloc(size, 16);
93#else
94 ptr = malloc(size);
95#endif
96 }
97 return ptr;
98}
99
100 void *gim_alloca(size_t size)
101{
102 if (g_allocafn)
103 return g_allocafn(size);
104 else
105 return gim_alloc(size);
106}
107
108 void *gim_realloc(void *ptr, size_t oldsize, size_t newsize)
109{
110 void *newptr = gim_alloc(newsize);
111 size_t copysize = oldsize < newsize ? oldsize : newsize;
112 gim_simd_memcpy(newptr, ptr, copysize);
113 gim_free(ptr);
114 return newptr;
115}
116
117 void gim_free(void *ptr)
118{
119 if (!ptr) return;
120 if (g_freefn)
121 {
122 g_freefn(ptr);
123 }
124 else
125 {
126#ifdef GIM_SIMD_MEMORY
127 btAlignedFree(ptr);
128#else
129 free(ptr);
130#endif
131 }
132}
btAlignedAllocator.h
btAlignedFree
#define btAlignedFree(ptr)
Definition btAlignedAllocator.h:47
btAlignedAlloc
#define btAlignedAlloc(size, alignment)
Definition btAlignedAllocator.h:46
size
static DBVT_INLINE btScalar size(const btDbvtVolume &a)
Definition btDbvt.cpp:52
gim_set_free_handler
void gim_set_free_handler(gim_free_function *fn)
Definition gim_memory.cpp:57
gim_alloc
void * gim_alloc(size_t size)
Standar Memory functions.
Definition gim_memory.cpp:82
gim_realloc
void * gim_realloc(void *ptr, size_t oldsize, size_t newsize)
Definition gim_memory.cpp:108
g_freefn
static gim_free_function * g_freefn
Definition gim_memory.cpp:40
gim_get_alloc_handler
gim_alloc_function * gim_get_alloc_handler()
get current memory management functions.
Definition gim_memory.cpp:62
g_reallocfn
static gim_realloc_function * g_reallocfn
Definition gim_memory.cpp:39
gim_get_alloca_handler
gim_alloca_function * gim_get_alloca_handler()
Definition gim_memory.cpp:67
gim_get_realloc_handler
gim_realloc_function * gim_get_realloc_handler()
Definition gim_memory.cpp:72
gim_set_alloca_handler
void gim_set_alloca_handler(gim_alloca_function *fn)
Definition gim_memory.cpp:47
gim_get_free_handler
gim_free_function * gim_get_free_handler()
Definition gim_memory.cpp:77
gim_free
void gim_free(void *ptr)
Definition gim_memory.cpp:117
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:42
g_allocfn
static gim_alloc_function * g_allocfn
Definition gim_memory.cpp:37
gim_alloca
void * gim_alloca(size_t size)
Definition gim_memory.cpp:100
g_allocafn
static gim_alloca_function * g_allocafn
Definition gim_memory.cpp:38
gim_set_realloc_handler
void gim_set_realloc_handler(gim_realloc_function *fn)
Definition gim_memory.cpp:52
gim_memory.h
gim_realloc_function
void * gim_realloc_function(void *ptr, size_t oldsize, size_t newsize)
Definition gim_memory.h:89
gim_simd_memcpy
void gim_simd_memcpy(void *dst, const void *src, size_t copysize)
Definition gim_memory.h:120
gim_alloca_function
void * gim_alloca_function(size_t size)
Definition gim_memory.h:88
gim_alloc_function
void * gim_alloc_function(size_t size)
Function prototypes to allocate and free memory.
Definition gim_memory.h:87
gim_free_function
void gim_free_function(void *ptr)
Definition gim_memory.h:90