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