ceph/src/boost/libs/asio/example/cpp03/tutorial/timer2/timer.cpp

   1 //
   2 // timer.cpp
   3 // ~~~~~~~~~
   4 //
   5 // Copyright (c) 2003-2017 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 #include <iostream>
  12 #include <boost/asio.hpp>
  13 #include <boost/date_time/posix_time/posix_time.hpp>
  14
  15 void print(const boost::system::error_code& /*e*/)
  16 {
  17   std::cout << "Hello, world!" << std::endl;
  18 }
  19
  20 int main()
  21 {
  22   boost::asio::io_context io;
  23
  24   boost::asio::deadline_timer t(io, boost::posix_time::seconds(5));
  25   t.async_wait(&print);
  26
  27   io.run();
  28
  29   return 0;
  30 }