[library Boost.Asio
    [quickbook 1.4]
    [copyright 2003 - 2008 Christopher M. Kohlhoff]
    [license
        Distributed under the Boost Software License, Version 1.0.
        (See accompanying file LICENSE_1_0.txt or copy at
        [@http://www.boost.org/LICENSE_1_0.txt])
    ]
    [category generic]
]

[section Timer.5]

In a multithreaded program

  ``''''''``  void print2()
  ``''''''``  {
  ``''''''``    if (count_ < 10)
  ``''''''``    {
  ``''''''``      std::cout << "Timer 2: " << count_ << "\n";
  ``''''''``      ++count_;
  ``''''''``      timer2_.expires_at(timer2_.expires_at() + boost::posix_time::seconds(1));
  ``''''''``      timer2_.async_wait(strand_.wrap(boost::bind(&printer::print2, this)));

Just as it would with a call from a single thread

  ``''''''``int main()
  ``''''''``{
  ``''''''``  boost::asio::io_service io;
  ``''''''``  printer p(io);
  ``''''''``  boost::thread t(boost::bind(&boost::asio::io_service::run, &io));
  ``''''''``  io.run();
  ``''''''``  t.join();
  ``''''''``  return 0;
  ``''''''``}

[endsect]