1<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<html> 3<head> 4<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 5<title>Global sig</title> 6<link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css"> 7<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 8<link rel="home" href="../../../index.html" title="The Boost C++ Libraries BoostBook Documentation Subset"> 9<link rel="up" href="../../../process/reference.html#header.boost.process.posix_hpp" title="Header <boost/process/posix.hpp>"> 10<link rel="prev" href="fd.html" title="Global fd"> 11<link rel="next" href="use_vfork.html" title="Global use_vfork"> 12</head> 13<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 14<table cellpadding="2" width="100%"><tr> 15<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../boost.png"></td> 16<td align="center"><a href="../../../../../index.html">Home</a></td> 17<td align="center"><a href="../../../../../libs/libraries.htm">Libraries</a></td> 18<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 19<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 20<td align="center"><a href="../../../../../more/index.htm">More</a></td> 21</tr></table> 22<hr> 23<div class="spirit-nav"> 24<a accesskey="p" href="fd.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../../process/reference.html#header.boost.process.posix_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="use_vfork.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a> 25</div> 26<div class="refentry"> 27<a name="boost.process.posix.sig"></a><div class="titlepage"></div> 28<div class="refnamediv"> 29<h2><span class="refentrytitle">Global sig</span></h2> 30<p>boost::process::posix::sig</p> 31</div> 32<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> 33<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.posix_hpp" title="Header <boost/process/posix.hpp>">boost/process/posix.hpp</a>> 34 35</span><span class="emphasis"><em><span class="identifier">unspecified</span></em></span> sig<span class="special">;</span></pre></div> 36<div class="refsect1"> 37<a name="id-1.3.30.9.19.4.4"></a><h2>Description</h2> 38<p>This property lets you modify the handling of <code class="computeroutput">SIGCHLD</code> for this call. It will be reset afterwards.</p> 39<p>It can be set to default, by the expression <code class="computeroutput">sig.dfl()</code>, set to ignore with <code class="computeroutput">sig.ign()</code> or assigned a custom handler. A custom handler must have the type <code class="computeroutput">sighandler_t</code>and can be assigned with the following syntax:</p> 40<pre class="programlisting"><span class="identifier">sig</span> <span class="special">=</span> <span class="identifier">handler</span><span class="special">;</span> 41<span class="identifier">sig</span><span class="special">(</span><span class="identifier">handler</span><span class="special">)</span><span class="special">;</span> 42</pre> 43<div class="warning"><table border="0" summary="Warning"> 44<tr> 45<td rowspan="2" align="center" valign="top" width="25"><img alt="[Warning]" src="../../../../../doc/src/images/warning.png"></td> 46<th align="left">Warning</th> 47</tr> 48<tr><td align="left" valign="top"><p>spawn will automatically use <code class="computeroutput">sig.ign()</code>, which will override if you pass a custom handler. </p></td></tr> 49</table></div> 50<p> 51</p> 52</div> 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 © 2006-2012 Julio M. Merino Vidal, Ilya Sokolov, 57 Felipe Tanus, Jeff Flinn, Boris Schaeling<br>Copyright © 2016 Klemens D. Morgenstern<p> 58 Distributed under the Boost Software License, Version 1.0. (See accompanying 59 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 60 </p> 61</div></td> 62</tr></table> 63<hr> 64<div class="spirit-nav"> 65<a accesskey="p" href="fd.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../../process/reference.html#header.boost.process.posix_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="use_vfork.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a> 66</div> 67</body> 68</html> 69
