1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>io_context::stopped</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="../io_context.html" title="io_context"> 9<link rel="prev" href="stop.html" title="io_context::stop"> 10<link rel="next" href="use_service.html" title="io_context::use_service"> 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="stop.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../io_context.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="use_service.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.reference.io_context.stopped"></a><a class="link" href="stopped.html" title="io_context::stopped">io_context::stopped</a> 28</h4></div></div></div> 29<p> 30 <a class="indexterm" name="boost_asio.indexterm.io_context.stopped"></a> 31Determine whether 32 the <a class="link" href="../io_context.html" title="io_context"><code class="computeroutput">io_context</code></a> 33 object has been stopped. 34 </p> 35<pre class="programlisting">bool stopped() const; 36</pre> 37<p> 38 This function is used to determine whether an <a class="link" href="../io_context.html" title="io_context"><code class="computeroutput">io_context</code></a> 39 object has been stopped, either through an explicit call to <code class="computeroutput">stop()</code>, 40 or due to running out of work. When an <a class="link" href="../io_context.html" title="io_context"><code class="computeroutput">io_context</code></a> 41 object is stopped, calls to <code class="computeroutput">run()</code>, <code class="computeroutput">run_one()</code>, 42 <code class="computeroutput">poll()</code> or <code class="computeroutput">poll_one()</code> will return immediately 43 without invoking any handlers. 44 </p> 45<h6> 46<a name="boost_asio.reference.io_context.stopped.h0"></a> 47 <span class="phrase"><a name="boost_asio.reference.io_context.stopped.return_value"></a></span><a class="link" href="stopped.html#boost_asio.reference.io_context.stopped.return_value">Return Value</a> 48 </h6> 49<p> 50 <code class="computeroutput">true</code> if the <a class="link" href="../io_context.html" title="io_context"><code class="computeroutput">io_context</code></a> 51 object is stopped, otherwise <code class="computeroutput">false</code>. 52 </p> 53</div> 54<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 55<td align="left"></td> 56<td align="right"><div class="copyright-footer">Copyright © 2003-2020 Christopher M. 57 Kohlhoff<p> 58 Distributed under the Boost Software License, Version 1.0. (See accompanying 59 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>) 60 </p> 61</div></td> 62</tr></table> 63<hr> 64<div class="spirit-nav"> 65<a accesskey="p" href="stop.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../io_context.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="use_service.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a> 66</div> 67</body> 68</html> 69
