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-exception
 6//
 7//===----------------------------------------------------------------------===//
 8
 9#ifndef _LIBCPP___ATOMIC_IS_ALWAYS_LOCK_FREE_H
10#define _LIBCPP___ATOMIC_IS_ALWAYS_LOCK_FREE_H
11
12#include <__config>
13
14#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
15#  pragma GCC system_header
16#endif
17
18_LIBCPP_BEGIN_NAMESPACE_STD
19
20template <class _Tp>
21struct __libcpp_is_always_lock_free {
22  // __atomic_always_lock_free is available in all Standard modes
23  static const bool __value = __atomic_always_lock_free(sizeof(_Tp), nullptr);
24};
25
26_LIBCPP_END_NAMESPACE_STD
27
28#endif // _LIBCPP___ATOMIC_IS_ALWAYS_LOCK_FREE_H