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 limit_handles</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.handles_hpp" title="Header <boost/process/handles.hpp>"> 10<link rel="prev" href="group.html" title="Class group"> 11<link rel="next" href="../this_process/native_handle_type.html" title="Type definition native_handle_type"> 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="group.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../process/reference.html#header.boost.process.handles_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="../this_process/native_handle_type.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 25</div> 26<div class="refentry"> 27<a name="boost.process.limit_handles"></a><div class="titlepage"></div> 28<div class="refnamediv"> 29<h2><span class="refentrytitle">Global limit_handles</span></h2> 30<p>boost::process::limit_handles</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.handles_hpp" title="Header <boost/process/handles.hpp>">boost/process/handles.hpp</a>> 34 35</span><span class="keyword">static</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> limit_handles<span class="special">;</span></pre></div> 36<div class="refsect1"> 37<a name="id-1.3.30.9.15.4.4"></a><h2>Description</h2> 38<p>The limit_handles property sets all properties to be inherited only expcitly. It closes all unused file-descriptors on posix after the fork and removes the inherit flags on windows.</p> 39<div class="note"><table border="0" summary="Note"> 40<tr> 41<td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../doc/src/images/note.png"></td> 42<th align="left">Note</th> 43</tr> 44<tr><td align="left" valign="top"><p>This is executed after the fork on posix.</p></td></tr> 45</table></div> 46<p> 47</p> 48<pre class="programlisting"><span class="identifier">system</span><span class="special">(</span><span class="string">"gcc"</span><span class="special">,</span> <span class="identifier">limit_handles</span><span class="special">)</span><span class="special">;</span> 49</pre> 50<p>Since limit also closes the standard handles unless they are explicitly redirected they can be ignored by <code class="computeroutput">limit_handles</code> in the following way.</p> 51<pre class="programlisting"><span class="identifier">system</span><span class="special">(</span><span class="string">"gcc"</span><span class="special">,</span> <span class="identifier">limit_handles</span><span class="special">.</span><span class="identifier">allowStd</span><span class="special">(</span><span class="special">)</span><span class="special">)</span> 52</pre> 53<p> </p> 54</div> 55</div> 56<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 57<td align="left"></td> 58<td align="right"><div class="copyright-footer">Copyright © 2006-2012 Julio M. Merino Vidal, Ilya Sokolov, 59 Felipe Tanus, Jeff Flinn, Boris Schaeling<br>Copyright © 2016 Klemens D. Morgenstern<p> 60 Distributed under the Boost Software License, Version 1.0. (See accompanying 61 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 62 </p> 63</div></td> 64</tr></table> 65<hr> 66<div class="spirit-nav"> 67<a accesskey="p" href="group.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../process/reference.html#header.boost.process.handles_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="../this_process/native_handle_type.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 68</div> 69</body> 70</html> 71
