blob: 692a8b9eb9560785f4782a315ac936922458e068 [file] [log] [blame]
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.8.5"/>
<title>Apache Mesos: process::Subprocess::IO Class Reference</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td style="padding-left: 0.5em;">
<div id="projectname">Apache Mesos
</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.5 -->
<div id="navrow1" class="tabs">
<ul class="tablist">
<li><a href="index.html"><span>Main&#160;Page</span></a></li>
<li><a href="pages.html"><span>Related&#160;Pages</span></a></li>
<li><a href="namespaces.html"><span>Namespaces</span></a></li>
<li class="current"><a href="annotated.html"><span>Classes</span></a></li>
<li><a href="files.html"><span>Files</span></a></li>
<li><a href="examples.html"><span>Examples</span></a></li>
</ul>
</div>
<div id="navrow2" class="tabs2">
<ul class="tablist">
<li><a href="annotated.html"><span>Class&#160;List</span></a></li>
<li><a href="classes.html"><span>Class&#160;Index</span></a></li>
<li><a href="hierarchy.html"><span>Class&#160;Hierarchy</span></a></li>
<li><a href="functions.html"><span>Class&#160;Members</span></a></li>
</ul>
</div>
<div id="nav-path" class="navpath">
<ul>
<li class="navelem"><a class="el" href="namespaceprocess.html">process</a></li><li class="navelem"><a class="el" href="classprocess_1_1Subprocess.html">Subprocess</a></li><li class="navelem"><a class="el" href="classprocess_1_1Subprocess_1_1IO.html">IO</a></li> </ul>
</div>
</div><!-- top -->
<div class="header">
<div class="summary">
<a href="#nested-classes">Classes</a> &#124;
<a href="#pub-types">Public Types</a> &#124;
<a href="#friends">Friends</a> &#124;
<a href="classprocess_1_1Subprocess_1_1IO-members.html">List of all members</a> </div>
<div class="headertitle">
<div class="title">process::Subprocess::IO Class Reference</div> </div>
</div><!--header-->
<div class="contents">
<p>Describes how the I/O is redirected for stdin/stdout/stderr.
<a href="classprocess_1_1Subprocess_1_1IO.html#details">More...</a></p>
<p><code>#include &lt;<a class="el" href="subprocess__base_8hpp_source.html">subprocess_base.hpp</a>&gt;</code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="nested-classes"></a>
Classes</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structprocess_1_1Subprocess_1_1IO_1_1InputFileDescriptors.html">InputFileDescriptors</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">For input file descriptors a child reads from the <code>read</code> file descriptor and a parent may write to the <code>write</code> file descriptor if one is present. <a href="structprocess_1_1Subprocess_1_1IO_1_1InputFileDescriptors.html#details">More...</a><br/></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structprocess_1_1Subprocess_1_1IO_1_1OutputFileDescriptors.html">OutputFileDescriptors</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">For output file descriptors a child writes to the <code>write</code> file descriptor and a parent may read from the <code>read</code> file descriptor if one is present. <a href="structprocess_1_1Subprocess_1_1IO_1_1OutputFileDescriptors.html#details">More...</a><br/></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a>
Public Types</h2></td></tr>
<tr class="memitem:adb9433454d727de27b2440f729d19990"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classprocess_1_1Subprocess_1_1IO.html#adb9433454d727de27b2440f729d19990">FDType</a> { <a class="el" href="classprocess_1_1Subprocess_1_1IO.html#adb9433454d727de27b2440f729d19990af648d44b624da021da40a80190291380">DUPLICATED</a>,
<a class="el" href="classprocess_1_1Subprocess_1_1IO.html#adb9433454d727de27b2440f729d19990ad3f73761156a6e75873cf903a0d62994">OWNED</a>
}</td></tr>
<tr class="memdesc:adb9433454d727de27b2440f729d19990"><td class="mdescLeft">&#160;</td><td class="mdescRight">Describes the lifecycle of a file descriptor passed into a subprocess via the <code><a class="el" href="classprocess_1_1Subprocess.html#aaa6e1b76ef54ed6db34d595811122ce0">Subprocess::FD</a></code> helper. <a href="classprocess_1_1Subprocess_1_1IO.html#adb9433454d727de27b2440f729d19990">More...</a><br/></td></tr>
<tr class="separator:adb9433454d727de27b2440f729d19990"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="friends"></a>
Friends</h2></td></tr>
<tr class="memitem:a3d12fd22e5deb76d3529ce4e6d9179dc"><td class="memItemLeft" align="right" valign="top">class&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classprocess_1_1Subprocess_1_1IO.html#a3d12fd22e5deb76d3529ce4e6d9179dc">Subprocess</a></td></tr>
<tr class="separator:a3d12fd22e5deb76d3529ce4e6d9179dc"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac8482b6f6f0eb22c6137b9c72769d5ea"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classTry.html">Try</a>&lt; <a class="el" href="classprocess_1_1Subprocess.html">Subprocess</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classprocess_1_1Subprocess_1_1IO.html#ac8482b6f6f0eb22c6137b9c72769d5ea">subprocess</a> (const std::string &amp;path, std::vector&lt; std::string &gt; argv, const <a class="el" href="classprocess_1_1Subprocess_1_1IO.html">Subprocess::IO</a> &amp;<a class="el" href="classprocess_1_1Subprocess.html#a60535054108d572796c25011c2aa379d">in</a>, const <a class="el" href="classprocess_1_1Subprocess_1_1IO.html">Subprocess::IO</a> &amp;<a class="el" href="classprocess_1_1Subprocess.html#a1c1a81931671b15c0c4b310bc49dea56">out</a>, const <a class="el" href="classprocess_1_1Subprocess_1_1IO.html">Subprocess::IO</a> &amp;<a class="el" href="classprocess_1_1Subprocess.html#a98180558f1427a64a03cf3f656310bc4">err</a>, const <a class="el" href="classflags_1_1FlagsBase.html">flags::FlagsBase</a> *flags, const <a class="el" href="classOption.html">Option</a>&lt; std::map&lt; std::string, std::string &gt;&gt; &amp;environment, const <a class="el" href="classOption.html">Option</a>&lt; lambda::function&lt; <a class="el" href="3rdparty_2stout_2include_2stout_2windows_8hpp.html#ab03ced250ed239bc3b50b669493997f9">pid_t</a>(const lambda::function&lt; int()&gt; &amp;)&gt;&gt; &amp;clone, const std::vector&lt; <a class="el" href="structprocess_1_1Subprocess_1_1ParentHook.html">Subprocess::ParentHook</a> &gt; &amp;parent_hooks, const std::vector&lt; <a class="el" href="classprocess_1_1Subprocess_1_1ChildHook.html">Subprocess::ChildHook</a> &gt; &amp;child_hooks)</td></tr>
<tr class="separator:ac8482b6f6f0eb22c6137b9c72769d5ea"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Describes how the I/O is redirected for stdin/stdout/stderr. </p>
<p>One of the following three modes are supported:</p>
<ol type="1">
<li>PIPE: Redirect to a pipe. The pipe will be created when launching a subprocess and the user can read/write the parent side of the pipe using <code><a class="el" href="classprocess_1_1Subprocess.html#a60535054108d572796c25011c2aa379d">Subprocess::in</a>/out/err</code>.</li>
<li>PATH: Redirect to a file. For stdout/stderr, the file will be created if it does not exist. If the file exists, it will be appended.</li>
<li>FD: Redirect to an open file descriptor. </li>
</ol>
</div><h2 class="groupheader">Member Enumeration Documentation</h2>
<a class="anchor" id="adb9433454d727de27b2440f729d19990"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">enum <a class="el" href="classprocess_1_1Subprocess_1_1IO.html#adb9433454d727de27b2440f729d19990">process::Subprocess::IO::FDType</a></td>
</tr>
</table>
</div><div class="memdoc">
<p>Describes the lifecycle of a file descriptor passed into a subprocess via the <code><a class="el" href="classprocess_1_1Subprocess.html#aaa6e1b76ef54ed6db34d595811122ce0">Subprocess::FD</a></code> helper. </p>
<table class="fieldtable">
<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><em><a class="anchor" id="adb9433454d727de27b2440f729d19990af648d44b624da021da40a80190291380"></a>DUPLICATED</em>&nbsp;</td><td class="fielddoc">
<p>The file descriptor is duplicated before being passed to the subprocess. </p>
<p>The original file descriptor remains open. </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="adb9433454d727de27b2440f729d19990ad3f73761156a6e75873cf903a0d62994"></a>OWNED</em>&nbsp;</td><td class="fielddoc">
<p>The file descriptor is not duplicated before being passed to the subprocess. </p>
<p>Upon spawning the subprocess, the original file descriptor is closed in the parent and remains open in the child. </p>
</td></tr>
</table>
</div>
</div>
<h2 class="groupheader">Friends And Related Function Documentation</h2>
<a class="anchor" id="a3d12fd22e5deb76d3529ce4e6d9179dc"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">friend class <a class="el" href="classprocess_1_1Subprocess.html">Subprocess</a></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">friend</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
</div>
</div>
<a class="anchor" id="ac8482b6f6f0eb22c6137b9c72769d5ea"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="classTry.html">Try</a>&lt;<a class="el" href="classprocess_1_1Subprocess.html">Subprocess</a>&gt; subprocess </td>
<td>(</td>
<td class="paramtype">const std::string &amp;&#160;</td>
<td class="paramname"><em>path</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">std::vector&lt; std::string &gt;&#160;</td>
<td class="paramname"><em>argv</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="classprocess_1_1Subprocess_1_1IO.html">Subprocess::IO</a> &amp;&#160;</td>
<td class="paramname"><em>in</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="classprocess_1_1Subprocess_1_1IO.html">Subprocess::IO</a> &amp;&#160;</td>
<td class="paramname"><em>out</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="classprocess_1_1Subprocess_1_1IO.html">Subprocess::IO</a> &amp;&#160;</td>
<td class="paramname"><em>err</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="classflags_1_1FlagsBase.html">flags::FlagsBase</a> *&#160;</td>
<td class="paramname"><em>flags</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="classOption.html">Option</a>&lt; std::map&lt; std::string, std::string &gt;&gt; &amp;&#160;</td>
<td class="paramname"><em>environment</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="classOption.html">Option</a>&lt; lambda::function&lt; <a class="el" href="3rdparty_2stout_2include_2stout_2windows_8hpp.html#ab03ced250ed239bc3b50b669493997f9">pid_t</a>(const lambda::function&lt; int()&gt; &amp;)&gt;&gt; &amp;&#160;</td>
<td class="paramname"><em>clone</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const std::vector&lt; <a class="el" href="structprocess_1_1Subprocess_1_1ParentHook.html">Subprocess::ParentHook</a> &gt; &amp;&#160;</td>
<td class="paramname"><em>parent_hooks</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const std::vector&lt; <a class="el" href="classprocess_1_1Subprocess_1_1ChildHook.html">Subprocess::ChildHook</a> &gt; &amp;&#160;</td>
<td class="paramname"><em>child_hooks</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">friend</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
</div>
</div>
<hr/>The documentation for this class was generated from the following file:<ul>
<li>3rdparty/libprocess/include/process/<a class="el" href="subprocess__base_8hpp_source.html">subprocess_base.hpp</a></li>
</ul>
</div><!-- contents -->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated by &#160;<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.8.5
</small></address>
</body>
</html>