| /* |
| * Distributed under the Boost Software License, Version 1.0. |
| * (See accompanying file LICENSE_1_0.txt or copy at |
| * http://www.boost.org/LICENSE_1_0.txt) |
| * |
| * Copyright (c) 2020 Andrey Semashev |
| */ |
| /*! |
| * \file atomic/detail/once_flag.hpp |
| * |
| * This header declares \c once_flag structure for controlling one time initialization |
| */ |
| |
| #ifndef BOOST_ATOMIC_DETAIL_ONCE_FLAG_HPP_INCLUDED_ |
| #define BOOST_ATOMIC_DETAIL_ONCE_FLAG_HPP_INCLUDED_ |
| |
| #include <boost/atomic/detail/config.hpp> |
| #include <boost/atomic/detail/aligned_variable.hpp> |
| #include <boost/atomic/detail/core_operations.hpp> |
| #include <boost/atomic/detail/header.hpp> |
| |
| #ifdef BOOST_HAS_PRAGMA_ONCE |
| #pragma once |
| #endif |
| |
| namespace boost { |
| namespace atomics { |
| namespace detail { |
| |
| typedef atomics::detail::core_operations< 1u, false, false > once_flag_operations; |
| |
| struct once_flag |
| { |
| BOOST_ATOMIC_DETAIL_ALIGNED_VAR(once_flag_operations::storage_alignment, once_flag_operations::storage_type, m_flag); |
| }; |
| |
| } // namespace detail |
| } // namespace atomics |
| } // namespace boost |
| |
| #include <boost/atomic/detail/footer.hpp> |
| |
| #endif // BOOST_ATOMIC_DETAIL_ONCE_FLAG_HPP_INCLUDED_ |