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1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef _LIBCPP___ATOMIC_IS_ALWAYS_LOCK_FREE_H10#define _LIBCPP___ATOMIC_IS_ALWAYS_LOCK_FREE_H11 12#include <__config>13 14#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)15# pragma GCC system_header16#endif17 18_LIBCPP_BEGIN_NAMESPACE_STD19 20template <class _Tp>21struct __libcpp_is_always_lock_free {22 // __atomic_always_lock_free is available in all Standard modes23 static const bool __value = __atomic_always_lock_free(sizeof(_Tp), nullptr);24};25 26_LIBCPP_END_NAMESPACE_STD27 28#endif // _LIBCPP___ATOMIC_IS_ALWAYS_LOCK_FREE_H29