1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>Source listing for Timer.3</title> 5<link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="../../../boost_asio.html" title="Boost.Asio"> 8<link rel="up" href="../tuttimer3.html" title="Timer.3 - Binding arguments to a handler"> 9<link rel="prev" href="../tuttimer3.html" title="Timer.3 - Binding arguments to a handler"> 10<link rel="next" href="../tuttimer4.html" title="Timer.4 - Using a member function as a handler"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<table cellpadding="2" width="100%"><tr> 14<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../boost.png"></td> 15<td align="center"><a href="../../../../../index.html">Home</a></td> 16<td align="center"><a href="../../../../../libs/libraries.htm">Libraries</a></td> 17<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 18<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 19<td align="center"><a href="../../../../../more/index.htm">More</a></td> 20</tr></table> 21<hr> 22<div class="spirit-nav"> 23<a accesskey="p" href="../tuttimer3.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../tuttimer3.html"><img src="../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../boost_asio.html"><img src="../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../tuttimer4.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="section"> 26<div class="titlepage"><div><div><h4 class="title"> 27<a name="boost_asio.tutorial.tuttimer3.src"></a><a class="link" href="src.html" title="Source listing for Timer.3">Source listing for 28 Timer.3</a> 29</h4></div></div></div> 30<pre class="programlisting">// 31// timer.cpp 32// ~~~~~~~~~ 33// 34// Copyright (c) 2003-2020 Christopher M. Kohlhoff (chris at kohlhoff dot com) 35// 36// Distributed under the Boost Software License, Version 1.0. (See accompanying 37// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 38// 39 40#include <iostream> 41#include <boost/asio.hpp> 42#include <boost/bind/bind.hpp> 43 44void print(const boost::system::error_code& /*e*/, 45 boost::asio::steady_timer* t, int* count) 46{ 47 if (*count < 5) 48 { 49 std::cout << *count << std::endl; 50 ++(*count); 51 52 t->expires_at(t->expiry() + boost::asio::chrono::seconds(1)); 53 t->async_wait(boost::bind(print, 54 boost::asio::placeholders::error, t, count)); 55 } 56} 57 58int main() 59{ 60 boost::asio::io_context io; 61 62 int count = 0; 63 boost::asio::steady_timer t(io, boost::asio::chrono::seconds(1)); 64 t.async_wait(boost::bind(print, 65 boost::asio::placeholders::error, &t, &count)); 66 67 io.run(); 68 69 std::cout << "Final count is " << count << std::endl; 70 71 return 0; 72} 73</pre> 74<p> 75 Return to <a class="link" href="../tuttimer3.html" title="Timer.3 - Binding arguments to a handler">Timer.3 - Binding 76 arguments to a handler</a> 77 </p> 78</div> 79<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 80<td align="left"></td> 81<td align="right"><div class="copyright-footer">Copyright © 2003-2020 Christopher M. 82 Kohlhoff<p> 83 Distributed under the Boost Software License, Version 1.0. (See accompanying 84 file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) 85 </p> 86</div></td> 87</tr></table> 88<hr> 89<div class="spirit-nav"> 90<a accesskey="p" href="../tuttimer3.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../tuttimer3.html"><img src="../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../boost_asio.html"><img src="../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../tuttimer4.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a> 91</div> 92</body> 93</html> 94
