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9474e09459
This disentangles the code which previously had a mix of many #ifdefs, a non-versioned namespace and a versioned namespace. It also makes it clearer which parts of <new> are implemented on Windows by including <new.h>.
35 lines
1.1 KiB
C
35 lines
1.1 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___NEW_INTERFERENCE_SIZE_H
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#define _LIBCPP___NEW_INTERFERENCE_SIZE_H
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#include <__config>
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#include <__cstddef/size_t.h>
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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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#if _LIBCPP_STD_VER >= 17
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# if defined(__GCC_DESTRUCTIVE_SIZE) && defined(__GCC_CONSTRUCTIVE_SIZE)
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inline constexpr size_t hardware_destructive_interference_size = __GCC_DESTRUCTIVE_SIZE;
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inline constexpr size_t hardware_constructive_interference_size = __GCC_CONSTRUCTIVE_SIZE;
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# endif // defined(__GCC_DESTRUCTIVE_SIZE) && defined(__GCC_CONSTRUCTIVE_SIZE)
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#endif // _LIBCPP_STD_VER >= 17
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP___NEW_INTERFERENCE_SIZE_H
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