75 lines
2.5 KiB
C
75 lines
2.5 KiB
C
/*===---- mm_malloc.h - Allocating and Freeing Aligned Memory Blocks -------===
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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*===-----------------------------------------------------------------------===
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*/
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#ifndef __MM_MALLOC_H
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#define __MM_MALLOC_H
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#include <stdlib.h>
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#ifdef _WIN32
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#include <malloc.h>
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#else
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#ifndef __cplusplus
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extern int posix_memalign(void **__memptr, size_t __alignment, size_t __size);
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#else
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// Some systems (e.g. those with GNU libc) declare posix_memalign with an
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// exception specifier. Via an "egregious workaround" in
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// Sema::CheckEquivalentExceptionSpec, Clang accepts the following as a valid
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// redeclaration of glibc's declaration.
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extern "C" int posix_memalign(void **__memptr, size_t __alignment, size_t __size);
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#endif
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#endif
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#if !(defined(_WIN32) && defined(_mm_malloc))
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static __inline__ void *__attribute__((__always_inline__, __nodebug__,
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__malloc__))
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_mm_malloc(size_t __size, size_t __align)
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{
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if (__align == 1) {
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return malloc(__size);
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}
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if (!(__align & (__align - 1)) && __align < sizeof(void *))
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__align = sizeof(void *);
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void *__mallocedMemory;
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#if defined(__MINGW32__)
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__mallocedMemory = __mingw_aligned_malloc(__size, __align);
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#elif defined(_WIN32)
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__mallocedMemory = _aligned_malloc(__size, __align);
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#else
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if (posix_memalign(&__mallocedMemory, __align, __size))
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return 0;
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#endif
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return __mallocedMemory;
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}
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static __inline__ void __attribute__((__always_inline__, __nodebug__))
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_mm_free(void *__p)
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{
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free(__p);
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}
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#endif
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#endif /* __MM_MALLOC_H */
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