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

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gim_memory.h
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1 #ifndef GIM_MEMORY_H_INCLUDED
2 #define GIM_MEMORY_H_INCLUDED
3
6 /*
7 -----------------------------------------------------------------------------
8 This source file is part of GIMPACT Library.
9
10 For the latest info, see http://gimpact.sourceforge.net/
11
12 Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
13 email: projectileman@yahoo.com
14
15 This library is free software; you can redistribute it and/or
16 modify it under the terms of EITHER:
17 (1) The GNU Lesser General Public License as published by the Free
18 Software Foundation; either version 2.1 of the License, or (at
19 your option) any later version. The text of the GNU Lesser
20 General Public License is included with this library in the
21 file GIMPACT-LICENSE-LGPL.TXT.
22 (2) The BSD-style license that is included with this library in
23 the file GIMPACT-LICENSE-BSD.TXT.
24 (3) The zlib/libpng license that is included with this library in
25 the file GIMPACT-LICENSE-ZLIB.TXT.
26
27 This library is distributed in the hope that it will be useful,
28 but WITHOUT ANY WARRANTY; without even the implied warranty of
29 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
30 GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
31
32 -----------------------------------------------------------------------------
33 */
34
35
36 #include "gim_math.h"
37 #include <string.h>
38
39 #ifdef PREFETCH
40 #include <xmmintrin.h> // for prefetch
41 #define pfval 64
42 #define pfval2 128
43 #define pf(_x,_i) _mm_prefetch((void *)(_x + _i + pfval), 0)
45 #define pf2(_x,_i) _mm_prefetch((void *)(_x + _i + pfval2), 0)
47 #else
48 #define pf(_x,_i)
50 #define pf2(_x,_i)
52 #endif
53
54
56 #define GIM_COPY_ARRAYS(dest_array,source_array,element_count)\
57 {\
58 for (GUINT _i_=0;_i_<element_count ;++_i_)\
59 {\
60 dest_array[_i_] = source_array[_i_];\
61 }\
62 }\
63
64 #define GIM_COPY_ARRAYS_1(dest_array,source_array,element_count,copy_macro)\
65 {\
66 for (GUINT _i_=0;_i_<element_count ;++_i_)\
67 {\
68 copy_macro(dest_array[_i_],source_array[_i_]);\
69 }\
70 }\
71
72
73 #define GIM_ZERO_ARRAY(array,element_count)\
74 {\
75 for (GUINT _i_=0;_i_<element_count ;++_i_)\
76 {\
77 array[_i_] = 0;\
78 }\
79 }\
80
81 #define GIM_CONSTANT_ARRAY(array,element_count,constant)\
82 {\
83 for (GUINT _i_=0;_i_<element_count ;++_i_)\
84 {\
85 array[_i_] = constant;\
86 }\
87 }\
88
89
91 typedef void * gim_alloc_function (size_t size);
92 typedef void * gim_alloca_function (size_t size);//Allocs on the heap
93 typedef void * gim_realloc_function (void *ptr, size_t oldsize, size_t newsize);
94 typedef void gim_free_function (void *ptr);
95
96
99 void gim_set_alloc_handler (gim_alloc_function *fn);
100 void gim_set_alloca_handler (gim_alloca_function *fn);
101 void gim_set_realloc_handler (gim_realloc_function *fn);
102 void gim_set_free_handler (gim_free_function *fn);
103
104
106 gim_alloc_function *gim_get_alloc_handler (void);
107 gim_alloca_function *gim_get_alloca_handler(void);
108 gim_realloc_function *gim_get_realloc_handler (void);
109 gim_free_function *gim_get_free_handler (void);
110
111
113 void * gim_alloc(size_t size);
114 void * gim_alloca(size_t size);
115 void * gim_realloc(void *ptr, size_t oldsize, size_t newsize);
116 void gim_free(void *ptr);
117
118
119
120 #if defined (_WIN32) && !defined(__MINGW32__) && !defined(__CYGWIN__)
121 #define GIM_SIMD_MEMORY 1
122 #endif
123
125 #define SIMD_T GUINT64
126 #define SIMD_T_SIZE sizeof(SIMD_T)
128
129
130 inline void gim_simd_memcpy(void * dst, const void * src, size_t copysize)
131 {
132 #ifdef GIM_SIMD_MEMORY
133 /*
134 //'long long int' is incompatible with visual studio 6...
135 //copy words
136 SIMD_T * ui_src_ptr = (SIMD_T *)src;
137 SIMD_T * ui_dst_ptr = (SIMD_T *)dst;
138 while(copysize>=SIMD_T_SIZE)
139 {
140 *(ui_dst_ptr++) = *(ui_src_ptr++);
141 copysize-=SIMD_T_SIZE;
142 }
143 if(copysize==0) return;
144 */
145
146 char * c_src_ptr = (char *)src;
147 char * c_dst_ptr = (char *)dst;
148 while(copysize>0)
149 {
150 *(c_dst_ptr++) = *(c_src_ptr++);
151 copysize--;
152 }
153 return;
154 #else
155 memcpy(dst,src,copysize);
156 #endif
157 }
158
159
160
161 template<class T>
162 inline void gim_swap_elements(T* _array,size_t _i,size_t _j)
163 {
164 T _e_tmp_ = _array[_i];
165 _array[_i] = _array[_j];
166 _array[_j] = _e_tmp_;
167 }
168
169
170 template<class T>
171 inline void gim_swap_elements_memcpy(T* _array,size_t _i,size_t _j)
172 {
173 char _e_tmp_[sizeof(T)];
174 gim_simd_memcpy(_e_tmp_,&_array[_i],sizeof(T));
175 gim_simd_memcpy(&_array[_i],&_array[_j],sizeof(T));
176 gim_simd_memcpy(&_array[_j],_e_tmp_,sizeof(T));
177 }
178
179 template <int SIZE>
180 inline void gim_swap_elements_ptr(char * _array,size_t _i,size_t _j)
181 {
182 char _e_tmp_[SIZE];
183 _i*=SIZE;
184 _j*=SIZE;
185 gim_simd_memcpy(_e_tmp_,_array+_i,SIZE);
186 gim_simd_memcpy(_array+_i,_array+_j,SIZE);
187 gim_simd_memcpy(_array+_j,_e_tmp_,SIZE);
188 }
189
190 #endif // GIM_MEMORY_H_INCLUDED
gim_simd_memcpy
void gim_simd_memcpy(void *dst, const void *src, size_t copysize)
Definition: gim_memory.h:130
gim_alloc
void * gim_alloc(size_t size)
Standar Memory functions.
Definition: gim_memory.cpp:86
gim_get_alloca_handler
gim_alloca_function * gim_get_alloca_handler(void)
Definition: gim_memory.cpp:68
gim_realloc_function
void * gim_realloc_function(void *ptr, size_t oldsize, size_t newsize)
Definition: gim_memory.h:93
gim_realloc
void * gim_realloc(void *ptr, size_t oldsize, size_t newsize)
Definition: gim_memory.cpp:110
gim_set_alloca_handler
void gim_set_alloca_handler(gim_alloca_function *fn)
Definition: gim_memory.cpp:48
gim_get_free_handler
gim_free_function * gim_get_free_handler(void)
Definition: gim_memory.cpp:80
size
static DBVT_INLINE btScalar size(const btDbvtVolume &a)
Definition: btDbvt.cpp:52
gim_math.h
gim_free_function
void gim_free_function(void *ptr)
Definition: gim_memory.h:94
gim_get_realloc_handler
gim_realloc_function * gim_get_realloc_handler(void)
Definition: gim_memory.cpp:74
gim_alloca_function
void * gim_alloca_function(size_t size)
Definition: gim_memory.h:92
gim_alloca
void * gim_alloca(size_t size)
Definition: gim_memory.cpp:104
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_free
void gim_free(void *ptr)
Definition: gim_memory.cpp:119
gim_swap_elements_memcpy
void gim_swap_elements_memcpy(T *_array, size_t _i, size_t _j)
Definition: gim_memory.h:171
gim_get_alloc_handler
gim_alloc_function * gim_get_alloc_handler(void)
get current memory management functions.
Definition: gim_memory.cpp:63
gim_set_free_handler
void gim_set_free_handler(gim_free_function *fn)
Definition: gim_memory.cpp:58
gim_swap_elements_ptr
void gim_swap_elements_ptr(char *_array, size_t _i, size_t _j)
Definition: gim_memory.h:180
gim_set_realloc_handler
void gim_set_realloc_handler(gim_realloc_function *fn)
Definition: gim_memory.cpp:53
gim_swap_elements
void gim_swap_elements(T *_array, size_t _i, size_t _j)
Definition: gim_memory.h:162
gim_alloc_function
void * gim_alloc_function(size_t size)
Function prototypes to allocate and free memory.
Definition: gim_memory.h:91