1 /* 2 * The copyright in this software is being made available under the 2-clauses 3 * BSD License, included below. This software may be subject to other third 4 * party and contributor rights, including patent rights, and no such rights 5 * are granted under this license. 6 * 7 * Copyright (c) 2005, Herve Drolon, FreeImage Team 8 * Copyright (c) 2007, Callum Lerwick <seg (at) haxxed.com> 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS' 21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 #ifndef __OPJ_MALLOC_H 33 #define __OPJ_MALLOC_H 34 /** 35 @file opj_malloc.h 36 @brief Internal functions 37 38 The functions in opj_malloc.h are internal utilities used for memory management. 39 */ 40 41 /** @defgroup MISC MISC - Miscellaneous internal functions */ 42 /*@{*/ 43 44 /** @name Exported functions */ 45 /*@{*/ 46 /* ----------------------------------------------------------------------- */ 47 48 /** 49 Allocate an uninitialized memory block 50 @param size Bytes to allocate 51 @return Returns a void pointer to the allocated space, or NULL if there is insufficient memory available 52 */ 53 #ifdef ALLOC_PERF_OPT 54 void * OPJ_CALLCONV opj_malloc(size_t size); 55 #else 56 /* prevent assertion on overflow for MSVC */ 57 #ifdef _MSC_VER 58 #define opj_malloc(size) ((size_t)(size) >= (size_t)-0x100 ? NULL : malloc(size)) 59 #else 60 #define opj_malloc(size) malloc(size) 61 #endif 62 #endif 63 64 /** 65 Allocate a memory block with elements initialized to 0 66 @param num Blocks to allocate 67 @param size Bytes per block to allocate 68 @return Returns a void pointer to the allocated space, or NULL if there is insufficient memory available 69 */ 70 #ifdef ALLOC_PERF_OPT 71 void * OPJ_CALLCONV opj_calloc(size_t _NumOfElements, size_t _SizeOfElements); 72 #else 73 /* prevent assertion on overflow for MSVC */ 74 #ifdef _MSC_VER 75 #define opj_calloc(num, size) ((size_t)(num) != 0 && (size_t)(num) >= (size_t)-0x100 / (size_t)(size) ? NULL : calloc(num, size)) 76 #else 77 #define opj_calloc(num, size) calloc(num, size) 78 #endif 79 #endif 80 81 /** 82 Allocate memory aligned to a 16 byte boundry 83 @param size Bytes to allocate 84 @return Returns a void pointer to the allocated space, or NULL if there is insufficient memory available 85 */ 86 /* FIXME: These should be set with cmake tests, but we're currently not requiring use of cmake */ 87 #ifdef _WIN32 88 /* Someone should tell the mingw people that their malloc.h ought to provide _mm_malloc() */ 89 #ifdef __GNUC__ 90 #include <mm_malloc.h> 91 #define HAVE_MM_MALLOC 92 #else /* MSVC, Intel C++ */ 93 #include <malloc.h> 94 #ifdef _mm_malloc 95 #define HAVE_MM_MALLOC 96 #endif 97 #endif 98 #else /* Not _WIN32 */ 99 #if defined(__sun) 100 #define HAVE_MEMALIGN 101 #elif defined(__FreeBSD__) 102 #define HAVE_POSIX_MEMALIGN 103 /* Linux x86_64 and OSX always align allocations to 16 bytes */ 104 #elif !defined(__amd64__) && !defined(__APPLE__) && !defined(_AIX) 105 #define HAVE_MEMALIGN 106 #include <malloc.h> 107 #endif 108 #endif 109 110 #define opj_aligned_malloc(size) malloc(size) 111 #define opj_aligned_free(m) free(m) 112 113 #ifdef HAVE_MM_MALLOC 114 #undef opj_aligned_malloc 115 #define opj_aligned_malloc(size) _mm_malloc(size, 16) 116 #undef opj_aligned_free 117 #define opj_aligned_free(m) _mm_free(m) 118 #endif 119 120 #ifdef HAVE_MEMALIGN 121 extern void* memalign(size_t, size_t); 122 #undef opj_aligned_malloc 123 #define opj_aligned_malloc(size) memalign(16, (size)) 124 #undef opj_aligned_free 125 #define opj_aligned_free(m) free(m) 126 #endif 127 128 #ifdef HAVE_POSIX_MEMALIGN 129 #undef opj_aligned_malloc 130 extern int posix_memalign(void**, size_t, size_t); 131 132 static INLINE void* __attribute__ ((malloc)) opj_aligned_malloc(size_t size){ 133 void* mem = NULL; 134 posix_memalign(&mem, 16, size); 135 return mem; 136 } 137 #undef opj_aligned_free 138 #define opj_aligned_free(m) free(m) 139 #endif 140 141 #ifdef ALLOC_PERF_OPT 142 #undef opj_aligned_malloc 143 #define opj_aligned_malloc(size) opj_malloc(size) 144 #undef opj_aligned_free 145 #define opj_aligned_free(m) opj_free(m) 146 #endif 147 148 /** 149 Reallocate memory blocks. 150 @param m Pointer to previously allocated memory block 151 @param s New size in bytes 152 @return Returns a void pointer to the reallocated (and possibly moved) memory block 153 */ 154 #ifdef ALLOC_PERF_OPT 155 void * OPJ_CALLCONV opj_realloc(void * m, size_t s); 156 #else 157 /* prevent assertion on overflow for MSVC */ 158 #ifdef _MSC_VER 159 #define opj_realloc(m, s) ((size_t)(s) >= (size_t)-0x100 ? NULL : realloc(m, s)) 160 #else 161 #define opj_realloc(m, s) realloc(m, s) 162 #endif 163 #endif 164 165 /** 166 Deallocates or frees a memory block. 167 @param m Previously allocated memory block to be freed 168 */ 169 #ifdef ALLOC_PERF_OPT 170 void OPJ_CALLCONV opj_free(void * m); 171 #else 172 #define opj_free(m) free(m) 173 #endif 174 175 #ifdef __GNUC__ 176 #pragma GCC poison malloc calloc realloc free 177 #endif 178 179 /* ----------------------------------------------------------------------- */ 180 /*@}*/ 181 182 /*@}*/ 183 184 #endif /* __OPJ_MALLOC_H */ 185 186
