2 * Copyright (c) 2005, Herve Drolon, FreeImage Team
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3 * Copyright (c) 2007, Callum Lerwick <seg@haxxed.com>
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4 * All rights reserved.
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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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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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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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27 #ifndef __OPJ_MALLOC_H
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28 #define __OPJ_MALLOC_H
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31 @brief Internal functions
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33 The functions in opj_malloc.h are internal utilities used for memory management.
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36 /** @defgroup MISC MISC - Miscellaneous internal functions */
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39 /** @name Exported functions */
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41 /* ----------------------------------------------------------------------- */
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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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48 #ifdef ALLOC_PERF_OPT
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49 void * OPJ_CALLCONV opj_malloc(size_t size);
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51 #define opj_malloc(size) malloc(size)
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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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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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63 #define opj_calloc(num, size) calloc(num, size)
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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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71 /* FIXME: These should be set with cmake tests, but we're currently not requiring use of cmake */
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73 /* Someone should tell the mingw people that their malloc.h ought to provide _mm_malloc() */
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75 #include <mm_malloc.h>
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76 #define HAVE_MM_MALLOC
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77 #else /* MSVC, Intel C++ */
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80 #define HAVE_MM_MALLOC
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83 #else /* Not _WIN32 */
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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 <malloc.h>
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93 #define opj_aligned_malloc(size) malloc(size)
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94 #define opj_aligned_free(m) free(m)
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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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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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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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115 static INLINE void* __attribute__ ((malloc)) opj_aligned_malloc(size_t size){
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117 posix_memalign(&mem, 16, size);
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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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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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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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137 #ifdef ALLOC_PERF_OPT
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138 void * OPJ_CALLCONV opj_realloc(void * m, size_t s);
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140 #define opj_realloc(m, s) realloc(m, s)
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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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147 #ifdef ALLOC_PERF_OPT
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148 void OPJ_CALLCONV opj_free(void * m);
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150 #define opj_free(m) free(m)
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154 #pragma GCC poison malloc calloc realloc free
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157 /* ----------------------------------------------------------------------- */
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162 #endif /* __OPJ_MALLOC_H */
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