//
// timer.cpp
// ~~~~~~~~~
//
// Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// 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)
//
#include <iostream>
#include <boost/asio.hpp>
#include <boost/bind.hpp>
#include <boost/date_time/posix_time/posix_time.hpp>
class printer
{
public:
  printer(boost::asio::io_service& io)
    : timer_(io, boost::posix_time::seconds(1)),
      count_(0)
  {
    timer_.async_wait(boost::bind(&printer::print, this));
  }
  ~printer()
  {
    std::cout << "Final count is " << count_ << std::endl;
  }
  void print()
  {
    if (count_ < 5)
    {
      std::cout << count_ << std::endl;
      ++count_;
      timer_.expires_at(timer_.expires_at() + boost::posix_time::seconds(1));
      timer_.async_wait(boost::bind(&printer::print, this));
    }
  }
private:
  boost::asio::deadline_timer timer_;
  int count_;
};
int main()
{
  boost::asio::io_service io;
  printer p(io);
  io.run();
  return 0;
}

Вернуться вТаймер.4 - Использование функции члена в качестве обработчика