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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
<html>
<head>
<!-- BEGIN META TAG INFO -->
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<link rel="home" href="http://developer.apple.com/">
<link rel="find" href="http://developer.apple.com/search/">
<link rel="stylesheet" type="text/css" href="../../documentation/css/adcstyle.css" title="fonts">
<script language="JavaScript" src="../../documentation/js/adc.js" type="text/javascript"></script>
<!-- END META TAG INFO -->
<!-- BEGIN TITLE -->
<title>SampleD</title>
<!-- END TITLE -->
<script language="JavaScript">
function JumpToNewPage() {
window.location=document.scpopupmenu.gotop.value;
return true;
}
</script>
</head>
<!-- BEGIN BODY OPEN -->
<body><a name="//apple_ref/doc/uid/DTS10003653" title="SampleD"></a>
<!--END BODY OPEN -->
<!-- START CENTER OPEN -->
<center>
<!-- END CENTER OPEN -->
<!-- BEGIN LOGO AND SEARCH -->
<!--#include virtual="/includes/adcnavbar"-->
<!-- END LOGO AND SEARCH -->
<!-- START BREADCRUMB -->
<div id="breadcrumb">
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr>
<td scope="row"><img width="340" height="10" src="images/1dot.gif" alt=""></td>
<td><img width="340" height="10" src="images/1dot.gif" alt=""></td>
</tr>
<tr valign="middle">
<td align="left" colspan="2">
<a href="http://developer.apple.com/">ADC Home</a> > <a href="../../referencelibrary/index.html">Reference Library</a> > <a href="../../samplecode/index.html">Sample Code</a> > <a href="../../samplecode/Darwin/index.html">Darwin</a> > <a href="../../samplecode/Darwin/idxProcessManagement-date.html">Process Management</a> >
</td>
</tr>
<tr>
<td colspan="2" scope="row"><img width="680" height="35" src="images/1dot.gif" alt=""></td>
</tr>
</table>
</div>
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<!-- START MAIN CONTENT -->
<!-- START TITLE GRAPHIC AND INTRO-->
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr align="left" valign="top">
<td><h1><div id="pagehead">SampleD</div></h1></td>
</tr>
</table>
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<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr align="left" valign="top">
<td id="scdetails">
<p><strong>Version:</strong> 1.1</p>
<p><strong>Posted:</strong> 2005-10-27</p>
<p><strong>Build Requirements:</strong> Mac OS X 10.4, Xcode 2.1, gcc 4.0</p>
<p><strong>Runtime Requirements:</strong> Mac OS X 10.4 or greater</p>
<form name="scpopupmenu" onSubmit="return false;" method=post>
<p><strong>View Source Code:</strong>
<select name="gotop" onChange="JumpToNewPage();" style="width:340px"><option selected value="ingnore">Select File</option>
<option value="listing1.html">/client.pl</option>
<option value="listing2.html">/report.c</option>
<option value="listing3.html">/SampleD.c</option></select>
</p>
</form>
<p><strong><a href="SampleD.zip">Download Sample</a></strong> (“SampleD.zip”, 27.1K)<BR>
<strong><a href="SampleD.dmg">Download Sample</a></strong> (“SampleD.dmg”, 87.2K)</p>
</td>
</tr>
<tr>
<td scope="row"><img width="680" height="10" src="images/1dot.gif" alt=""><br>
<img height="1" width="680" src="images/1dot_919699.gif" alt=""><br>
<img width="680" height="20" src="images/1dot.gif" alt=""></td>
</tr>
<tr>
<td scope="row">
<h2>Description</h2>
<p>SampleD consists of two programs designed to demonstrate the use of the Apple System Logger (ASL) API as well as the basic construction and behavior of a launchd daemon.</p><p>"SampleD" is a basic launchd daemon that, when instantiated by launchd, will listen on a socket indefinitely. Launchd takes care of registering the socket before the daemon is even launched, so all this code needs to do is accept any incoming connections and then write a message to them. This code also demonstrates how to use Apple System Logger APIs to construct and issue well formatted logging information to the syslogd server.</p><p>"Report" is a program that demonstrates the use of ASL to query the syslogd server for log messages created by the SampleD daemon.</p>
<h2>Document Revision History</h2>
<table cellspacing="0" class="graybox" width="680">
<tr>
<th width="100">Date</th>
<th width="580">Notes</th>
</tr>
<tr><td scope="row">2005-10-27</td><td>Updated to produce a universal binary. No code changes were required. Separately, updated comments and code flow to improve readability and consistency.</td></tr>
<tr><td scope="row">2005-06-06</td><td>Demonstrates use of launchd and Apple System Logger.</td></tr>
</table>
</td>
</tr>
</table>
<!-- END WIDE COLUMN -->
<!-- END MAIN CONTENT -->
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr>
<td><div style="width: 100%; height: 1px; background-color: #919699; margin-top: 5px; margin-bottom: 15px"></div></td>
</tr>
<tr>
<td align="center"><br/>
<table border="0" cellpadding="0" cellspacing="0" class="graybox">
<tr>
<th>Did this document help you?</th>
</tr>
<tr>
<td>
<div style="margin-bottom: 8px"><a href="http://developer.apple.com/feedback/?v=1&url=/samplecode/SampleD/index.html%3Fid%3DDTS10003653-1.0&media=dvd" target=_new>Yes</a>: Tell us what works for you.</div>
<div style="margin-bottom: 8px"><a href="http://developer.apple.com/feedback/?v=2&url=/samplecode/SampleD/index.html%3Fid%3DDTS10003653-1.0&media=dvd" target=_new>It’s good, but:</a> Report typos, inaccuracies, and so forth.</div>
<div><a href="http://developer.apple.com/feedback/?v=3&url=/samplecode/SampleD/index.html%3Fid%3DDTS10003653-1.0&media=dvd" target=_new>It wasn’t helpful</a>: Tell us what would have helped.</div>
</td>
</tr>
</table>
</td>
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</table>
<!-- START BOTTOM APPLE NAVIGATION -->
<!--#include virtual="/includes/footer"-->
<!-- END BOTTOM APPLE NAVIGATION -->
<!-- START CENTER CLOSE -->
</center>
<!-- END CENTER CLOSE -->
</body>
</html>