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4680 | right-hear | 1 | /* |
2 | * Copyright (c) 2005, Hervé Drolon, FreeImage Team |
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3 | * Copyright (c) 2007, Callum Lerwick |
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4 | * All rights reserved. |
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5 | * |
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6 | * Redistribution and use in source and binary forms, with or without |
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7 | * modification, are permitted provided that the following conditions |
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8 | * are met: |
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9 | * 1. Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * 2. Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * |
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15 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS' |
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16 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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17 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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18 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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19 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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20 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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21 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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22 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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23 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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24 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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25 | * POSSIBILITY OF SUCH DAMAGE. |
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26 | */ |
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27 | #ifndef __OPJ_MALLOC_H |
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28 | #define __OPJ_MALLOC_H |
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29 | /** |
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30 | @file opj_malloc.h |
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31 | @brief Internal functions |
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32 | |||
33 | The functions in opj_malloc.h are internal utilities used for memory management. |
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34 | */ |
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35 | |||
36 | /** @defgroup MISC MISC - Miscellaneous internal functions */ |
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37 | /*@{*/ |
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38 | |||
39 | /** @name Exported functions */ |
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40 | /*@{*/ |
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41 | /* ----------------------------------------------------------------------- */ |
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42 | |||
43 | /** |
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44 | Allocate an uninitialized memory block |
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45 | @param size Bytes to allocate |
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46 | @return Returns a void pointer to the allocated space, or NULL if there is insufficient memory available |
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47 | */ |
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48 | #ifdef ALLOC_PERF_OPT |
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49 | void * OPJ_CALLCONV opj_malloc(size_t size); |
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50 | #else |
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51 | #define opj_malloc(size) malloc(size) |
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52 | #endif |
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53 | |||
54 | /** |
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55 | Allocate a memory block with elements initialized to 0 |
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56 | @param num Blocks to allocate |
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57 | @param size Bytes per block to allocate |
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58 | @return Returns a void pointer to the allocated space, or NULL if there is insufficient memory available |
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59 | */ |
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60 | #ifdef ALLOC_PERF_OPT |
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61 | void * OPJ_CALLCONV opj_calloc(size_t _NumOfElements, size_t _SizeOfElements); |
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62 | #else |
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63 | #define opj_calloc(num, size) calloc(num, size) |
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64 | #endif |
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65 | |||
66 | /** |
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67 | Allocate memory aligned to a 16 byte boundry |
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68 | @param size Bytes to allocate |
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69 | @return Returns a void pointer to the allocated space, or NULL if there is insufficient memory available |
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70 | */ |
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71 | /* FIXME: These should be set with cmake tests, but we're currently not requiring use of cmake */ |
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72 | #ifdef _WIN32 |
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73 | /* Someone should tell the mingw people that their malloc.h ought to provide _mm_malloc() */ |
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74 | #ifdef __GNUC__ |
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75 | #include |
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76 | #define HAVE_MM_MALLOC |
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77 | #else /* MSVC, Intel C++ */ |
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78 | #include |
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79 | #ifdef _mm_malloc |
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80 | #define HAVE_MM_MALLOC |
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81 | #endif |
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82 | #endif |
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83 | #else /* Not _WIN32 */ |
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84 | #if defined(__sun) |
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85 | #define HAVE_MEMALIGN |
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86 | /* Linux x86_64 and OSX always align allocations to 16 bytes */ |
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87 | #elif !defined(__amd64__) && !defined(__APPLE__) |
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88 | #define HAVE_MEMALIGN |
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89 | #include |
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90 | #endif |
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91 | #endif |
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92 | |||
93 | #define opj_aligned_malloc(size) malloc(size) |
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94 | #define opj_aligned_free(m) free(m) |
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95 | |||
96 | #ifdef HAVE_MM_MALLOC |
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97 | #undef opj_aligned_malloc |
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98 | #define opj_aligned_malloc(size) _mm_malloc(size, 16) |
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99 | #undef opj_aligned_free |
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100 | #define opj_aligned_free(m) _mm_free(m) |
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101 | #endif |
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102 | |||
103 | #ifdef HAVE_MEMALIGN |
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104 | extern void* memalign(size_t, size_t); |
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105 | #undef opj_aligned_malloc |
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106 | #define opj_aligned_malloc(size) memalign(16, (size)) |
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107 | #undef opj_aligned_free |
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108 | #define opj_aligned_free(m) free(m) |
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109 | #endif |
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110 | |||
111 | #ifdef HAVE_POSIX_MEMALIGN |
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112 | #undef opj_aligned_malloc |
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113 | extern int posix_memalign(void**, size_t, size_t); |
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114 | |||
115 | static INLINE void* __attribute__ ((malloc)) opj_aligned_malloc(size_t size){ |
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116 | void* mem = NULL; |
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117 | posix_memalign(&mem, 16, size); |
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118 | return mem; |
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119 | } |
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120 | #undef opj_aligned_free |
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121 | #define opj_aligned_free(m) free(m) |
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122 | #endif |
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123 | |||
124 | #ifdef ALLOC_PERF_OPT |
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125 | #undef opj_aligned_malloc |
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126 | #define opj_aligned_malloc(size) opj_malloc(size) |
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127 | #undef opj_aligned_free |
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128 | #define opj_aligned_free(m) opj_free(m) |
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129 | #endif |
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130 | |||
131 | /** |
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132 | Reallocate memory blocks. |
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133 | @param m Pointer to previously allocated memory block |
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134 | @param s New size in bytes |
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135 | @return Returns a void pointer to the reallocated (and possibly moved) memory block |
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136 | */ |
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137 | #ifdef ALLOC_PERF_OPT |
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138 | void * OPJ_CALLCONV opj_realloc(void * m, size_t s); |
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139 | #else |
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140 | #define opj_realloc(m, s) realloc(m, s) |
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141 | #endif |
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142 | |||
143 | /** |
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144 | Deallocates or frees a memory block. |
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145 | @param m Previously allocated memory block to be freed |
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146 | */ |
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147 | #ifdef ALLOC_PERF_OPT |
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148 | void OPJ_CALLCONV opj_free(void * m); |
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149 | #else |
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150 | #define opj_free(m) free(m) |
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151 | #endif |
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152 | |||
153 | #ifdef __GNUC__ |
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154 | #pragma GCC poison malloc calloc realloc free |
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155 | #endif |
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156 | |||
157 | /* ----------------------------------------------------------------------- */ |
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158 | /*@}*/ |
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159 | |||
160 | /*@}*/ |
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161 | |||
162 | #endif /* __OPJ_MALLOC_H */ |
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163 |