ceph/src/boost/boost/asio/detail/null_reactor.hpp

   1 //
   2 // detail/null_reactor.hpp
   3 // ~~~~~~~~~~~~~~~~~~~~~~~
   4 //
   5 // Copyright (c) 2003-2022 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) \
  21   || defined(BOOST_ASIO_WINDOWS_RUNTIME) \
  22   || defined(BOOST_ASIO_HAS_IO_URING_AS_DEFAULT)
  23
  24 #include <boost/asio/detail/scheduler_operation.hpp>
  25 #include <boost/asio/detail/scheduler_task.hpp>
  26 #include <boost/asio/execution_context.hpp>
  27
  28 #include <boost/asio/detail/push_options.hpp>
  29
  30 namespace boost {
  31 namespace asio {
  32 namespace detail {
  33
  34 class null_reactor
  35   : public execution_context_service_base<null_reactor>,
  36     public scheduler_task
  37 {
  38 public:
  39   struct per_descriptor_data
  40   {
  41   };
  42
  43   // Constructor.
  44   null_reactor(boost::asio::execution_context& ctx)
  45     : execution_context_service_base<null_reactor>(ctx)
  46   {
  47   }
  48
  49   // Destructor.
  50   ~null_reactor()
  51   {
  52   }
  53
  54   // Initialise the task.
  55   void init_task()
  56   {
  57   }
  58
  59   // Destroy all user-defined handler objects owned by the service.
  60   void shutdown()
  61   {
  62   }
  63
  64   // No-op because should never be called.
  65   void run(long /*usec*/, op_queue<scheduler_operation>& /*ops*/)
  66   {
  67   }
  68
  69   // No-op.
  70   void interrupt()
  71   {
  72   }
  73 };
  74
  75 } // namespace detail
  76 } // namespace asio
  77 } // namespace boost
  78
  79 #include <boost/asio/detail/pop_options.hpp>
  80
  81 #endif // defined(BOOST_ASIO_HAS_IOCP)
  82        //   || defined(BOOST_ASIO_WINDOWS_RUNTIME)
  83        //   || defined(BOOST_ASIO_HAS_IO_URING_AS_DEFAULT)
  84
  85 #endif // BOOST_ASIO_DETAIL_NULL_REACTOR_HPP