diff options
Diffstat (limited to 'contrib/llvm/tools/clang/lib/Headers/mm_malloc.h')
-rw-r--r-- | contrib/llvm/tools/clang/lib/Headers/mm_malloc.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/contrib/llvm/tools/clang/lib/Headers/mm_malloc.h b/contrib/llvm/tools/clang/lib/Headers/mm_malloc.h new file mode 100644 index 0000000..fba8651 --- /dev/null +++ b/contrib/llvm/tools/clang/lib/Headers/mm_malloc.h @@ -0,0 +1,62 @@ +/*===---- mm_malloc.h - Allocating and Freeing Aligned Memory Blocks -------=== + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * + *===-----------------------------------------------------------------------=== + */ + +#ifndef __MM_MALLOC_H +#define __MM_MALLOC_H + +#include <errno.h> +#include <stdlib.h> + +static __inline__ void *__attribute__((__always_inline__, __nodebug__)) +_mm_malloc(size_t size, size_t align) +{ + if (align & (align - 1)) { + errno = EINVAL; + return 0; + } + + if (!size) + return 0; + + if (align < 2 * sizeof(void *)) + align = 2 * sizeof(void *); + + void *mallocedMemory = malloc(size + align); + if (!mallocedMemory) + return 0; + + void *alignedMemory = + (void *)(((size_t)mallocedMemory + align) & ~((size_t)align - 1)); + ((void **)alignedMemory)[-1] = mallocedMemory; + + return alignedMemory; +} + +static __inline__ void __attribute__((__always_inline__, __nodebug__)) +_mm_free(void *p) +{ + if (p) + free(((void **)p)[-1]); +} + +#endif /* __MM_MALLOC_H */ |