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// // timer.cpp // ~~~~~~~~~ // // Copyright (c) 2003-2020 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/bind.hpp> void print(const boost::system::error_code& /*e*/, boost::asio::steady_timer* t, int* count) { if (*count < 5) { std::cout << *count << std::endl; ++(*count); t->expires_at(t->expiry() + boost::asio::chrono::seconds(1)); t->async_wait(boost::bind(print, boost::asio::placeholders::error, t, count)); } } int main() { boost::asio::io_context io; int count = 0; boost::asio::steady_timer t(io, boost::asio::chrono::seconds(1)); t.async_wait(boost::bind(print, boost::asio::placeholders::error, &t, &count)); io.run(); std::cout << "Final count is " << count << std::endl; return 0; }
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