forked from OSchip/llvm-project
68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
/*===---- mm_malloc.h - Allocating and Freeing Aligned Memory Blocks -------===
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*
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* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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* See https://llvm.org/LICENSE.txt for license information.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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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__, __alloc_size__(1),
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__alloc_align__(2)))
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_mm_malloc(size_t __size, size_t __align) {
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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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#if defined(__MINGW32__)
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__mingw_aligned_free(__p);
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#elif defined(_WIN32)
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_aligned_free(__p);
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#else
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free(__p);
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#endif
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}
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#endif
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#endif /* __MM_MALLOC_H */
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