50 lines
1.1 KiB
C++
50 lines
1.1 KiB
C++
/*
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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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* https://www.boost.org/LICENSE_1_0.txt)
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*
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* Copyright (c) 2023 Andrey Semashev
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*/
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/*!
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* \file scope/fd_resource_traits.hpp
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*
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* This header contains definition of \c unique_resource traits
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* for compatibility with POSIX-like file descriptors.
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*/
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#ifndef BOOST_SCOPE_FD_RESOURCE_TRAITS_HPP_INCLUDED_
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#define BOOST_SCOPE_FD_RESOURCE_TRAITS_HPP_INCLUDED_
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#include <boost/scope/detail/config.hpp>
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#include <boost/scope/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 scope {
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//! POSIX-like file descriptor resource traits
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struct fd_resource_traits
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{
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//! Creates a default fd value
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static int make_default() noexcept
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{
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return -1;
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}
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//! Tests if the fd is allocated (valid)
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static bool is_allocated(int fd) noexcept
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{
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return fd >= 0;
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}
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};
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} // namespace scope
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} // namespace boost
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#include <boost/scope/detail/footer.hpp>
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#endif // BOOST_SCOPE_FD_RESOURCE_TRAITS_HPP_INCLUDED_
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