| // |
| // timer.cpp |
| // ~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2010 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_ << "\n"; |
| } |
| |
| void print() |
| { |
| if (count_ < 5) |
| { |
| std::cout << count_ << "\n"; |
| ++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; |
| } |