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 #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
gim_set_alloc_handler(gim_alloc_function * fn)42 void gim_set_alloc_handler(gim_alloc_function *fn)
43 {
44 g_allocfn = fn;
45 }
46
gim_set_alloca_handler(gim_alloca_function * fn)47 void gim_set_alloca_handler(gim_alloca_function *fn)
48 {
49 g_allocafn = fn;
50 }
51
gim_set_realloc_handler(gim_realloc_function * fn)52 void gim_set_realloc_handler(gim_realloc_function *fn)
53 {
54 g_reallocfn = fn;
55 }
56
gim_set_free_handler(gim_free_function * fn)57 void gim_set_free_handler(gim_free_function *fn)
58 {
59 g_freefn = fn;
60 }
61
gim_get_alloc_handler()62 gim_alloc_function *gim_get_alloc_handler()
63 {
64 return g_allocfn;
65 }
66
gim_get_alloca_handler()67 gim_alloca_function *gim_get_alloca_handler()
68 {
69 return g_allocafn;
70 }
71
gim_get_realloc_handler()72 gim_realloc_function *gim_get_realloc_handler()
73 {
74 return g_reallocfn;
75 }
76
gim_get_free_handler()77 gim_free_function *gim_get_free_handler()
78 {
79 return g_freefn;
80 }
81
gim_alloc(size_t size)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
gim_alloca(size_t size)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
gim_realloc(void * ptr,size_t oldsize,size_t newsize)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
gim_free(void * ptr)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 }
133