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.
7 * Copyright (c) 2015, Mathieu Malaterre <mathieu.malaterre@gmail.com>
8 * Copyright (c) 2015, Matthieu Darbois
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
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.
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.
32 #define OPJ_SKIP_POISON
33 #include "opj_malloc.h"
34 #include "opj_config_private.h"
40 static inline void *opj_aligned_alloc_n(size_t alignment, size_t size)
44 /* alignment shall be power of 2 */
45 assert( (alignment != 0U) && ((alignment & (alignment - 1U)) == 0U));
47 if (size == 0U) { /* prevent implementation defined behavior of realloc */
51 #if defined(HAVE_POSIX_MEMALIGN)
52 /* aligned_alloc requires c11, restrict to posix_memalign for now. Quote:
53 * This function was introduced in POSIX 1003.1d. Although this function is
54 * superseded by aligned_alloc, it is more portable to older POSIX systems
55 * that do not support ISO C11. */
56 if (posix_memalign (&ptr, alignment, size))
61 #elif defined(HAVE_MEMALIGN)
62 ptr = memalign( alignment, size );
64 #elif defined(HAVE__ALIGNED_MALLOC)
65 ptr = _aligned_malloc( alignment, size );
67 /* TODO: _mm_malloc(x,y) */
68 #error missing aligned alloc function
72 static inline void *opj_aligned_realloc_n(void *ptr, size_t alignment, size_t new_size)
76 /* alignment shall be power of 2 */
77 assert( (alignment != 0U) && ((alignment & (alignment - 1U)) == 0U));
79 if (new_size == 0U) { /* prevent implementation defined behavior of realloc */
83 /* no portable aligned realloc */
84 #if defined(HAVE_POSIX_MEMALIGN) || defined(HAVE_MEMALIGN)
85 /* glibc doc states one can mixed aligned malloc with realloc */
86 r_ptr = realloc( ptr, new_size ); /* fast path */
87 /* we simply use `size_t` to cast, since we are only interest in binary AND
89 if( ((size_t)r_ptr & (alignment - 1U)) != 0U ) {
90 /* this is non-trivial to implement a portable aligned realloc, so use a
91 * simple approach where we do not need a function that return the size of an
92 * allocated array (eg. _msize on Windows, malloc_size on MacOS,
93 * malloc_usable_size on systems with glibc) */
94 void *a_ptr = opj_aligned_alloc_n(alignment, new_size);
96 memcpy(a_ptr, r_ptr, new_size);
102 #elif defined(HAVE__ALIGNED_MALLOC)
103 r_ptr = _aligned_realloc( ptr, new_size, alignment );
105 /* TODO: _mm_malloc(x,y) */
106 #error missing aligned realloc function
110 void * opj_malloc(size_t size)
112 if (size == 0U) { /* prevent implementation defined behavior of realloc */
117 void * opj_calloc(size_t num, size_t size)
119 if (size == 0U) { /* prevent implementation defined behavior of realloc */
122 /* according to C89 standard, num == 0 shall return a valid pointer */
123 return calloc(num, size);
126 void *opj_aligned_malloc(size_t size)
128 return opj_aligned_alloc_n(16U, size);
130 void * opj_aligned_realloc(void *ptr, size_t size)
132 return opj_aligned_realloc_n(ptr, 16U, size);
135 void opj_aligned_free(void* ptr)
137 #ifdef HAVE__ALIGNED_MALLOC
138 _aligned_free( ptr );
144 void * opj_realloc(void *ptr, size_t new_size)
146 if (new_size == 0U) { /* prevent implementation defined behavior of realloc */
149 return realloc(ptr, new_size);
151 void opj_free(void *ptr)