// // null_event.hpp // ~~~~~~~~~~~~~~ // // Copyright (c) 2003-2008 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_EVENT_HPP #define BOOST_ASIO_DETAIL_NULL_EVENT_HPP #if defined(_MSC_VER) && (_MSC_VER >= 1200) # pragma once #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) #include #include #include #include #if !defined(BOOST_HAS_THREADS) #include namespace boost { namespace asio { namespace detail { class null_event : private noncopyable { public: // Constructor. null_event() { } // Destructor. ~null_event() { } // Signal the event. template void signal(Lock&) { } // Reset the event. template void clear(Lock&) { } // Wait for the event to become signalled. template void wait(Lock&) { } }; } // namespace detail } // namespace asio } // namespace boost #endif // !defined(BOOST_HAS_THREADS) #include #endif // BOOST_ASIO_DETAIL_NULL_EVENT_HPP