// // null_thread.hpp // ~~~~~~~~~~~~~~~ // // Copyright (c) 2003-2010 Christopher M. Kohlhoff (chris at kohlhoff dot com) // // 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_ASIO_DETAIL_NULL_THREAD_HPP #define BOOST_ASIO_DETAIL_NULL_THREAD_HPP #if defined(_MSC_VER) && (_MSC_VER >= 1200) # pragma once #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) #include <boost/asio/detail/push_options.hpp> #include <boost/asio/detail/push_options.hpp> #include <boost/config.hpp> #include <boost/system/system_error.hpp> #include <boost/asio/detail/pop_options.hpp> #if !defined(BOOST_HAS_THREADS) || defined(BOOST_ASIO_DISABLE_THREADS) #include <boost/asio/detail/push_options.hpp> #include <boost/throw_exception.hpp> #include <boost/asio/detail/pop_options.hpp> #include <boost/asio/error.hpp> #include <boost/asio/detail/noncopyable.hpp> namespace boost { namespace asio { namespace detail { class null_thread : private noncopyable { public: // Constructor. template <typename Function> null_thread(Function f) { boost::system::system_error e( boost::asio::error::operation_not_supported, "thread"); boost::throw_exception(e); } // Destructor. ~null_thread() { } // Wait for the thread to exit. void join() { } }; } // namespace detail } // namespace asio } // namespace boost #endif // !defined(BOOST_HAS_THREADS) || defined(BOOST_ASIO_DISABLE_THREADS) #include <boost/asio/detail/pop_options.hpp> #endif // BOOST_ASIO_DETAIL_NULL_THREAD_HPP