1 //
2 // detail/null_reactor.hpp
3 // ~~~~~~~~~~~~~~~~~~~~~~~
4 //
5 // Copyright (c) 2003-2019 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