3dc1f759e6
This patch removes code which is guarded by `_LIBCPP_STD_VER` and `_LIBCPP_CXX03_LANG`. This is part of https://discourse.llvm.org/t/rfc-freezing-c-03-headers-in-libc.
54 lines
1.7 KiB
C++
54 lines
1.7 KiB
C++
//===----------------------------------------------------------------------===//
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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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#ifndef _LIBCPP___CXX03___MEMORY_ALIGNED_ALLOC_H
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#define _LIBCPP___CXX03___MEMORY_ALIGNED_ALLOC_H
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#include <__cxx03/__config>
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#include <__cxx03/cstddef>
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#include <__cxx03/cstdlib>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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#ifndef _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION
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// Low-level helpers to call the aligned allocation and deallocation functions
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// on the target platform. This is used to implement libc++'s own memory
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// allocation routines -- if you need to allocate memory inside the library,
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// chances are that you want to use `__libcpp_allocate` instead.
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//
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// Returns the allocated memory, or `nullptr` on failure.
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inline _LIBCPP_HIDE_FROM_ABI void* __libcpp_aligned_alloc(std::size_t __alignment, std::size_t __size) {
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# if defined(_LIBCPP_MSVCRT_LIKE)
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return ::_aligned_malloc(__size, __alignment);
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# else
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void* __result = nullptr;
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(void)::posix_memalign(&__result, __alignment, __size);
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// If posix_memalign fails, __result is unmodified so we still return `nullptr`.
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return __result;
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# endif
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}
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inline _LIBCPP_HIDE_FROM_ABI void __libcpp_aligned_free(void* __ptr) {
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# if defined(_LIBCPP_MSVCRT_LIKE)
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::_aligned_free(__ptr);
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# else
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::free(__ptr);
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# endif
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}
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#endif // !_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP___CXX03___MEMORY_ALIGNED_ALLOC_H
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