/*===---- 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 #ifdef _WIN32 #include #else // Forward declare allocation functions to allow this header to parse without // any system headers. #ifndef __cplusplus extern void free(void *ptr); extern void *malloc(size_t size) __attribute__((__malloc__)); extern int posix_memalign(void **memptr, size_t alignment, size_t size); #else // Some systems (e.g. those with GNU libc) declare some of these functions with // an exception specifier. Via an "egregious workaround" in // Sema::CheckEquivalentExceptionSpec, Clang accepts the following as valid // redeclarations of glibc's declarations. extern "C" void free(void *ptr); extern "C" void *malloc(size_t size) __attribute__((__malloc__)); extern "C" int posix_memalign(void **memptr, size_t alignment, size_t size); #endif #endif static __inline__ void *__attribute__((__always_inline__, __nodebug__, __malloc__)) _mm_malloc(size_t size, size_t align) { if (align == 1) { return malloc(size); } if (!(align & (align - 1)) && align < sizeof(void *)) align = sizeof(void *); void *mallocedMemory; #ifdef _WIN32 mallocedMemory = _aligned_malloc(size, align); #else if (posix_memalign(&mallocedMemory, align, size)) return 0; #endif return mallocedMemory; } static __inline__ void __attribute__((__always_inline__, __nodebug__)) _mm_free(void *p) { free(p); } #endif /* __MM_MALLOC_H */