ceph/src/boost/libs/asio/example/cpp03/tutorial/timer3/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/bind.hpp>
  14 #include <boost/date_time/posix_time/posix_time.hpp>
  15
  16 void print(const boost::system::error_code& /*e*/,
  17     boost::asio::deadline_timer* t, int* count)
  18 {
  19   if (*count < 5)
  20   {
  21     std::cout << *count << std::endl;
  22     ++(*count);
  23
  24     t->expires_at(t->expires_at() + boost::posix_time::seconds(1));
  25     t->async_wait(boost::bind(print,
  26           boost::asio::placeholders::error, t, count));
  27   }
  28 }
  29
  30 int main()
  31 {
  32   boost::asio::io_context io;
  33
  34   int count = 0;
  35   boost::asio::deadline_timer t(io, boost::posix_time::seconds(1));
  36   t.async_wait(boost::bind(print,
  37         boost::asio::placeholders::error, &t, &count));
  38
  39   io.run();
  40
  41   std::cout << "Final count is " << count << std::endl;
  42
  43   return 0;
  44 }