1 // 2 // detail/null_reactor.hpp 3 // ~~~~~~~~~~~~~~~~~~~~~~~ 4 // 5 // Copyright (c) 2003-2021 Christopher M. Kohlhoff (chris at kohlhoff dot com) 6 // 7 // Distributed under the Boost Software License, Version 1.0. (See accompanying 8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 9 // 10 11 #ifndef BOOST_ASIO_DETAIL_NULL_REACTOR_HPP 12 #define BOOST_ASIO_DETAIL_NULL_REACTOR_HPP 13 14 #if defined(_MSC_VER) && (_MSC_VER >= 1200) 15 # pragma once 16 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) 17 18 #include <boost/asio/detail/config.hpp> 19 20 #if defined(BOOST_ASIO_HAS_IOCP) || defined(BOOST_ASIO_WINDOWS_RUNTIME) 21 22 #include <boost/asio/detail/scheduler_operation.hpp> 23 #include <boost/asio/execution_context.hpp> 24 25 #include <boost/asio/detail/push_options.hpp> 26 27 namespace boost { 28 namespace asio { 29 namespace detail { 30 31 class null_reactor 32 : public execution_context_service_base<null_reactor> 33 { 34 public: 35 // Constructor. null_reactor(boost::asio::execution_context & ctx)36 null_reactor(boost::asio::execution_context& ctx) 37 : execution_context_service_base<null_reactor>(ctx) 38 { 39 } 40 41 // Destructor. ~null_reactor()42 ~null_reactor() 43 { 44 } 45 46 // Destroy all user-defined handler objects owned by the service. shutdown()47 void shutdown() 48 { 49 } 50 51 // No-op because should never be called. run(long,op_queue<scheduler_operation> &)52 void run(long /*usec*/, op_queue<scheduler_operation>& /*ops*/) 53 { 54 } 55 56 // No-op. interrupt()57 void interrupt() 58 { 59 } 60 }; 61 62 } // namespace detail 63 } // namespace asio 64 } // namespace boost 65 66 #include <boost/asio/detail/pop_options.hpp> 67 68 #endif // defined(BOOST_ASIO_HAS_IOCP) || defined(BOOST_ASIO_WINDOWS_RUNTIME) 69 70 #endif // BOOST_ASIO_DETAIL_NULL_REACTOR_HPP 71