1*67e74705SXin Li /*===---- mm_malloc.h - Allocating and Freeing Aligned Memory Blocks -------===
2*67e74705SXin Li *
3*67e74705SXin Li * Permission is hereby granted, free of charge, to any person obtaining a copy
4*67e74705SXin Li * of this software and associated documentation files (the "Software"), to deal
5*67e74705SXin Li * in the Software without restriction, including without limitation the rights
6*67e74705SXin Li * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
7*67e74705SXin Li * copies of the Software, and to permit persons to whom the Software is
8*67e74705SXin Li * furnished to do so, subject to the following conditions:
9*67e74705SXin Li *
10*67e74705SXin Li * The above copyright notice and this permission notice shall be included in
11*67e74705SXin Li * all copies or substantial portions of the Software.
12*67e74705SXin Li *
13*67e74705SXin Li * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14*67e74705SXin Li * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15*67e74705SXin Li * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16*67e74705SXin Li * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17*67e74705SXin Li * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
18*67e74705SXin Li * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
19*67e74705SXin Li * THE SOFTWARE.
20*67e74705SXin Li *
21*67e74705SXin Li *===-----------------------------------------------------------------------===
22*67e74705SXin Li */
23*67e74705SXin Li
24*67e74705SXin Li #ifndef __MM_MALLOC_H
25*67e74705SXin Li #define __MM_MALLOC_H
26*67e74705SXin Li
27*67e74705SXin Li #include <stdlib.h>
28*67e74705SXin Li
29*67e74705SXin Li #ifdef _WIN32
30*67e74705SXin Li #include <malloc.h>
31*67e74705SXin Li #else
32*67e74705SXin Li #ifndef __cplusplus
33*67e74705SXin Li extern int posix_memalign(void **__memptr, size_t __alignment, size_t __size);
34*67e74705SXin Li #else
35*67e74705SXin Li // Some systems (e.g. those with GNU libc) declare posix_memalign with an
36*67e74705SXin Li // exception specifier. Via an "egregious workaround" in
37*67e74705SXin Li // Sema::CheckEquivalentExceptionSpec, Clang accepts the following as a valid
38*67e74705SXin Li // redeclaration of glibc's declaration.
39*67e74705SXin Li extern "C" int posix_memalign(void **__memptr, size_t __alignment, size_t __size);
40*67e74705SXin Li #endif
41*67e74705SXin Li #endif
42*67e74705SXin Li
43*67e74705SXin Li #if !(defined(_WIN32) && defined(_mm_malloc))
44*67e74705SXin Li static __inline__ void *__attribute__((__always_inline__, __nodebug__,
45*67e74705SXin Li __malloc__))
_mm_malloc(size_t __size,size_t __align)46*67e74705SXin Li _mm_malloc(size_t __size, size_t __align)
47*67e74705SXin Li {
48*67e74705SXin Li if (__align == 1) {
49*67e74705SXin Li return malloc(__size);
50*67e74705SXin Li }
51*67e74705SXin Li
52*67e74705SXin Li if (!(__align & (__align - 1)) && __align < sizeof(void *))
53*67e74705SXin Li __align = sizeof(void *);
54*67e74705SXin Li
55*67e74705SXin Li void *__mallocedMemory;
56*67e74705SXin Li #if defined(__MINGW32__)
57*67e74705SXin Li __mallocedMemory = __mingw_aligned_malloc(__size, __align);
58*67e74705SXin Li #elif defined(_WIN32)
59*67e74705SXin Li __mallocedMemory = _aligned_malloc(__size, __align);
60*67e74705SXin Li #else
61*67e74705SXin Li if (posix_memalign(&__mallocedMemory, __align, __size))
62*67e74705SXin Li return 0;
63*67e74705SXin Li #endif
64*67e74705SXin Li
65*67e74705SXin Li return __mallocedMemory;
66*67e74705SXin Li }
67*67e74705SXin Li
68*67e74705SXin Li static __inline__ void __attribute__((__always_inline__, __nodebug__))
_mm_free(void * __p)69*67e74705SXin Li _mm_free(void *__p)
70*67e74705SXin Li {
71*67e74705SXin Li free(__p);
72*67e74705SXin Li }
73*67e74705SXin Li #endif
74*67e74705SXin Li
75*67e74705SXin Li #endif /* __MM_MALLOC_H */
76