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src="../../../../doc/src/images/next.png" alt="Next"></a> +</div> +<div class="refentry"> +<a name="boost.process.on_exit"></a><div class="titlepage"></div> +<div class="refnamediv"> +<h2><span class="refentrytitle">Global on_exit</span></h2> +<p>boost::process::on_exit</p> +</div> +<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> +<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: <<a class="link" href="../../process/reference.html#header.boost.process.async_hpp" title="Header <boost/process/async.hpp>">boost/process/async.hpp</a>> + +</span><span class="keyword">static</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> on_exit<span class="special">;</span></pre></div> +<div class="refsect1"> +<a name="idp431909520"></a><h2>Description</h2> +<p>When an io_service is passed, the on_exit property can be used, to be notified when the child process exits.</p> +<p>The following syntax is valid</p> +<pre class="programlisting"><span class="identifier">on_exit</span><span class="special">=</span><span class="identifier">function</span><span class="special">;</span> +<span class="identifier">on_exit</span><span class="special">(</span><span class="identifier">function</span><span class="special">)</span><span class="special">;</span> +</pre> +<p>with <code class="computeroutput">function</code> being a callable object with the signature <code class="computeroutput">(int, const std::error_code&)</code> or an <code class="computeroutput">std::future<int></code>.</p> +<p><b>Example. </b></p> +<p> +</p> +<pre class="programlisting"><span class="identifier">io_service</span> <span class="identifier">ios</span><span class="special">;</span> + +<span class="identifier">child</span> <span class="identifier">c</span><span class="special">(</span><span class="string">"ls"</span><span class="special">,</span> <span class="identifier">on_exit</span><span class="special">=</span><span class="special">[</span><span class="special">]</span><span class="special">(</span><span class="keyword">int</span> <span class="identifier">exit</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">error_code</span><span class="special">&</span> <span class="identifier">ec_in</span><span class="special">)</span><span class="special">{</span><span class="special">}</span><span class="special">)</span><span class="special">;</span> + +<span class="identifier">std</span><span class="special">::</span><span class="identifier">future</span><span class="special"><</span><span class="keyword">int</span><span class="special">></span> <span class="identifier">exit_code</span><span class="special">;</span> +<span class="identifier">chlid</span> <span class="identifier">c2</span><span class="special">(</span><span class="string">"ls"</span><span class="special">,</span> <span class="identifier">on_exit</span><span class="special">=</span><span class="identifier">exit_code</span><span class="special">)</span><span class="special">;</span> +</pre> +<div class="note"><table border="0" summary="Note"> +<tr> +<td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../doc/src/images/note.png"></td> +<th align="left">Note</th> +</tr> +<tr><td align="left" valign="top"><p>The handler is not invoked when the launch fails. </p></td></tr> +</table></div> +<p> +</p> +<div class="warning"><table border="0" summary="Warning"> +<tr> +<td rowspan="2" align="center" valign="top" width="25"><img alt="[Warning]" src="../../../../doc/src/images/warning.png"></td> +<th align="left">Warning</th> +</tr> +<tr><td align="left" valign="top"><p>When used ignore_error it might gte invoked on error. </p></td></tr> +</table></div> +<p> +</p> +</div> +</div> +<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> +<td align="left"></td> +<td align="right"><div class="copyright-footer">Copyright © 2006-2012 Julio M. Merino Vidal, Ilya Sokolov, + Felipe Tanus, Jeff Flinn, Boris Schaeling<br>Copyright © 2016 Klemens D. Morgenstern<p> + 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) + </p> +</div></td> +</tr></table> +<hr> +<div class="spirit-nav"> +<a accesskey="p" href="argv.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../process/reference.html#header.boost.process.async_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="async_pipe.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> +</div> +</body> +</html> |