mirror of
https://github.com/ziglang/zig.git
synced 2024-11-14 16:13:24 +00:00
68 lines
1.9 KiB
C
Vendored
68 lines
1.9 KiB
C
Vendored
/*===---- mm_malloc.h - Allocating and Freeing Aligned Memory Blocks -------===
|
|
*
|
|
* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
* See https://llvm.org/LICENSE.txt for license information.
|
|
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
*
|
|
*===-----------------------------------------------------------------------===
|
|
*/
|
|
|
|
#ifndef __MM_MALLOC_H
|
|
#define __MM_MALLOC_H
|
|
|
|
#include <stdlib.h>
|
|
|
|
#ifdef _WIN32
|
|
#include <malloc.h>
|
|
#else
|
|
#ifndef __cplusplus
|
|
extern int posix_memalign(void **__memptr, size_t __alignment, size_t __size);
|
|
#else
|
|
// Some systems (e.g. those with GNU libc) declare posix_memalign with an
|
|
// exception specifier. Via an "egregious workaround" in
|
|
// Sema::CheckEquivalentExceptionSpec, Clang accepts the following as a valid
|
|
// redeclaration of glibc's declaration.
|
|
extern "C" int posix_memalign(void **__memptr, size_t __alignment, size_t __size);
|
|
#endif
|
|
#endif
|
|
|
|
#if !(defined(_WIN32) && defined(_mm_malloc))
|
|
static __inline__ void *__attribute__((__always_inline__, __nodebug__,
|
|
__malloc__, __alloc_size__(1),
|
|
__alloc_align__(2)))
|
|
_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;
|
|
#if defined(__MINGW32__)
|
|
__mallocedMemory = __mingw_aligned_malloc(__size, __align);
|
|
#elif defined(_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)
|
|
{
|
|
#if defined(__MINGW32__)
|
|
__mingw_aligned_free(__p);
|
|
#elif defined(_WIN32)
|
|
_aligned_free(__p);
|
|
#else
|
|
free(__p);
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
#endif /* __MM_MALLOC_H */
|