// // timer.cpp // ~~~~~~~~~ // // Copyright (c) 2003-2018 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 <asio.hpp> #include <boost/bind.hpp> class printer { public: printer(asio::io_context& io) : strand_(io), timer1_(io, asio::chrono::seconds(1)), timer2_(io, asio::chrono::seconds(1)), count_(0) { timer1_.async_wait(asio::bind_executor(strand_, boost::bind(&printer::print1, this))); timer2_.async_wait(asio::bind_executor(strand_, boost::bind(&printer::print2, this))); } ~printer() { std::cout << "Final count is " << count_ << std::endl; } void print1() { if (count_ < 10) { std::cout << "Timer 1: " << count_ << std::endl; ++count_; timer1_.expires_at(timer1_.expiry() + asio::chrono::seconds(1)); timer1_.async_wait(asio::bind_executor(strand_, boost::bind(&printer::print1, this))); } } void print2() { if (count_ < 10) { std::cout << "Timer 2: " << count_ << std::endl; ++count_; timer2_.expires_at(timer2_.expiry() + asio::chrono::seconds(1)); timer2_.async_wait(asio::bind_executor(strand_, boost::bind(&printer::print2, this))); } } private: asio::io_context::strand strand_; asio::steady_timer timer1_; asio::steady_timer timer2_; int count_; }; int main() { asio::io_context io; printer p(io); asio::thread t(boost::bind(&asio::io_context::run, &io)); io.run(); t.join(); return 0; }
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