1 // Copyright (c) 2016 Klemens D. Morgenstern 2 // 3 // Distributed under the Boost Software License, Version 1.0. (See accompanying 4 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 5 6 7 #ifndef BOOST_PROCESS_POSIX_ASYNC_HANDLER_HPP_ 8 #define BOOST_PROCESS_POSIX_ASYNC_HANDLER_HPP_ 9 10 #include <boost/process/detail/posix/handler.hpp> 11 #include <type_traits> 12 13 namespace boost { namespace process { namespace detail { namespace posix { 14 15 struct require_io_context {}; 16 17 struct async_handler : handler_base_ext, require_io_context 18 { 19 }; 20 21 template<typename T> 22 struct is_async_handler : std::is_base_of<async_handler, T> {}; 23 template<typename T> 24 struct is_async_handler<T&> : std::is_base_of<async_handler, T> {}; 25 template<typename T> 26 struct is_async_handler<const T&> : std::is_base_of<async_handler, T> {}; 27 28 template<typename T> 29 struct does_require_io_context : std::is_base_of<require_io_context, T> {}; 30 31 template<typename T> 32 struct does_require_io_context<T&> : std::is_base_of<require_io_context, T> {}; 33 34 template<typename T> 35 struct does_require_io_context<const T&> : std::is_base_of<require_io_context, T> {}; 36 37 38 }}}} 39 40 #endif /* BOOST_PROCESS_WINDOWS_ASYNC_HANDLER_HPP_ */ 41