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+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// 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)
+
+
+#ifndef BOOST_PROCESS_POSIX_ASYNC_HANDLER_HPP_
+#define BOOST_PROCESS_POSIX_ASYNC_HANDLER_HPP_
+
+#include <boost/process/detail/posix/handler.hpp>
+#include <type_traits>
+
+namespace boost { namespace process { namespace detail { namespace posix {
+
+struct require_io_service {};
+
+struct async_handler : handler_base_ext, require_io_service
+{
+};
+
+template<typename T>
+struct is_async_handler : std::is_base_of<async_handler, T> {};
+template<typename T>
+struct is_async_handler<T&> : std::is_base_of<async_handler, T> {};
+template<typename T>
+struct is_async_handler<const T&> : std::is_base_of<async_handler, T> {};
+
+template<typename T>
+struct does_require_io_service : std::is_base_of<require_io_service, T> {};
+
+template<typename T>
+struct does_require_io_service<T&> : std::is_base_of<require_io_service, T> {};
+
+template<typename T>
+struct does_require_io_service<const T&> : std::is_base_of<require_io_service, T> {};
+
+
+}}}}
+
+#endif /* BOOST_PROCESS_WINDOWS_ASYNC_HANDLER_HPP_ */