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