/usr/include/bullet/BulletCollision/Gimpact/gim_memory.h is in libbullet-dev 2.87+dfsg-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 | #ifndef GIM_MEMORY_H_INCLUDED
#define GIM_MEMORY_H_INCLUDED
/*! \file gim_memory.h
\author Francisco Leon Najera
*/
/*
-----------------------------------------------------------------------------
This source file is part of GIMPACT Library.
For the latest info, see http://gimpact.sourceforge.net/
Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
email: projectileman@yahoo.com
This library is free software; you can redistribute it and/or
modify it under the terms of EITHER:
(1) The GNU Lesser General Public License as published by the Free
Software Foundation; either version 2.1 of the License, or (at
your option) any later version. The text of the GNU Lesser
General Public License is included with this library in the
file GIMPACT-LICENSE-LGPL.TXT.
(2) The BSD-style license that is included with this library in
the file GIMPACT-LICENSE-BSD.TXT.
(3) The zlib/libpng license that is included with this library in
the file GIMPACT-LICENSE-ZLIB.TXT.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
-----------------------------------------------------------------------------
*/
#include "gim_math.h"
#include <string.h>
#ifdef PREFETCH
#include <xmmintrin.h> // for prefetch
#define pfval 64
#define pfval2 128
//! Prefetch 64
#define pf(_x,_i) _mm_prefetch((void *)(_x + _i + pfval), 0)
//! Prefetch 128
#define pf2(_x,_i) _mm_prefetch((void *)(_x + _i + pfval2), 0)
#else
//! Prefetch 64
#define pf(_x,_i)
//! Prefetch 128
#define pf2(_x,_i)
#endif
///Functions for manip packed arrays of numbers
#define GIM_COPY_ARRAYS(dest_array,source_array,element_count)\
{\
for (GUINT _i_=0;_i_<element_count ;++_i_)\
{\
dest_array[_i_] = source_array[_i_];\
}\
}\
#define GIM_COPY_ARRAYS_1(dest_array,source_array,element_count,copy_macro)\
{\
for (GUINT _i_=0;_i_<element_count ;++_i_)\
{\
copy_macro(dest_array[_i_],source_array[_i_]);\
}\
}\
#define GIM_ZERO_ARRAY(array,element_count)\
{\
for (GUINT _i_=0;_i_<element_count ;++_i_)\
{\
array[_i_] = 0;\
}\
}\
#define GIM_CONSTANT_ARRAY(array,element_count,constant)\
{\
for (GUINT _i_=0;_i_<element_count ;++_i_)\
{\
array[_i_] = constant;\
}\
}\
///Function prototypes to allocate and free memory.
typedef void * gim_alloc_function (size_t size);
typedef void * gim_alloca_function (size_t size);//Allocs on the heap
typedef void * gim_realloc_function (void *ptr, size_t oldsize, size_t newsize);
typedef void gim_free_function (void *ptr);
///Memory Function Handlers
///set new memory management functions. if fn is 0, the default handlers are used.
void gim_set_alloc_handler (gim_alloc_function *fn);
void gim_set_alloca_handler (gim_alloca_function *fn);
void gim_set_realloc_handler (gim_realloc_function *fn);
void gim_set_free_handler (gim_free_function *fn);
///get current memory management functions.
gim_alloc_function *gim_get_alloc_handler (void);
gim_alloca_function *gim_get_alloca_handler(void);
gim_realloc_function *gim_get_realloc_handler (void);
gim_free_function *gim_get_free_handler (void);
///Standar Memory functions
void * gim_alloc(size_t size);
void * gim_alloca(size_t size);
void * gim_realloc(void *ptr, size_t oldsize, size_t newsize);
void gim_free(void *ptr);
#if defined (_WIN32) && !defined(__MINGW32__) && !defined(__CYGWIN__)
#define GIM_SIMD_MEMORY 1
#endif
//! SIMD POINTER INTEGER
#define SIMD_T GUINT64
//! SIMD INTEGER SIZE
#define SIMD_T_SIZE sizeof(SIMD_T)
inline void gim_simd_memcpy(void * dst, const void * src, size_t copysize)
{
#ifdef GIM_SIMD_MEMORY
/*
//'long long int' is incompatible with visual studio 6...
//copy words
SIMD_T * ui_src_ptr = (SIMD_T *)src;
SIMD_T * ui_dst_ptr = (SIMD_T *)dst;
while(copysize>=SIMD_T_SIZE)
{
*(ui_dst_ptr++) = *(ui_src_ptr++);
copysize-=SIMD_T_SIZE;
}
if(copysize==0) return;
*/
char * c_src_ptr = (char *)src;
char * c_dst_ptr = (char *)dst;
while(copysize>0)
{
*(c_dst_ptr++) = *(c_src_ptr++);
copysize--;
}
return;
#else
memcpy(dst,src,copysize);
#endif
}
template<class T>
inline void gim_swap_elements(T* _array,size_t _i,size_t _j)
{
T _e_tmp_ = _array[_i];
_array[_i] = _array[_j];
_array[_j] = _e_tmp_;
}
template<class T>
inline void gim_swap_elements_memcpy(T* _array,size_t _i,size_t _j)
{
char _e_tmp_[sizeof(T)];
gim_simd_memcpy(_e_tmp_,&_array[_i],sizeof(T));
gim_simd_memcpy(&_array[_i],&_array[_j],sizeof(T));
gim_simd_memcpy(&_array[_j],_e_tmp_,sizeof(T));
}
template <int SIZE>
inline void gim_swap_elements_ptr(char * _array,size_t _i,size_t _j)
{
char _e_tmp_[SIZE];
_i*=SIZE;
_j*=SIZE;
gim_simd_memcpy(_e_tmp_,_array+_i,SIZE);
gim_simd_memcpy(_array+_i,_array+_j,SIZE);
gim_simd_memcpy(_array+_j,_e_tmp_,SIZE);
}
#endif // GIM_MEMORY_H_INCLUDED
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