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<h1 class="doctools_title">debug::heartbeat(n) 1.0.1 tcllib &quot;debug narrative&quot;</h1>
<div id="name" class="doctools_section"><h2><a name="name">Name</a></h2>
<p>debug::heartbeat - debug narrative - heartbeat</p>
</div>
<div id="toc" class="doctools_section"><h2><a name="toc">Table Of Contents</a></h2>
<ul class="doctools_toc">
<li class="doctools_section"><a href="#toc">Table Of Contents</a></li>
<li class="doctools_section"><a href="#synopsis">Synopsis</a></li>
<li class="doctools_section"><a href="#section1">Description</a></li>
<li class="doctools_section"><a href="#section2">API</a></li>
<li class="doctools_section"><a href="#section3">Bugs, Ideas, Feedback</a></li>
<li class="doctools_section"><a href="#keywords">Keywords</a></li>
<li class="doctools_section"><a href="#category">Category</a></li>
<li class="doctools_section"><a href="#copyright">Copyright</a></li>
</ul>
</div>
<div id="synopsis" class="doctools_section"><h2><a name="synopsis">Synopsis</a></h2>
<div class="doctools_synopsis">
<ul class="doctools_requirements">
<li>package require <b class="pkgname">Tcl 8.5</b></li>
<li>package require <b class="pkgname">debug::heartbeat <span class="opt">?1.0.1?</span></b></li>
<li>package require <b class="pkgname">debug <span class="opt">?1?</span></b></li>
</ul>
<ul class="doctools_syntax">
<li><a href="#1"><b class="cmd"><a href="debug.html">debug</a></b> <b class="method">heartbeat</b> <span class="opt">?<i class="arg">delta</i>?</span></a></li>
</ul>
</div>
</div>
<div id="section1" class="doctools_section"><h2><a name="section1">Description</a></h2>
</div>
<div id="section2" class="doctools_section"><h2><a name="section2">API</a></h2>
<dl class="doctools_definitions">
<dt><a name="1"><b class="cmd"><a href="debug.html">debug</a></b> <b class="method">heartbeat</b> <span class="opt">?<i class="arg">delta</i>?</span></a></dt>
<dd><p>This method activates or disables a heartbeat with which to monitor
the event loop of an event-based Tcl application.</p>
<p>It reserves the debug tag <b class="const">heartbeat</b> for its operation
and writes a message every <i class="arg">delta</i> milliseconds.</p>
<p>A <i class="arg">delta</i>-value &lt;= 0 disables the heartbeat.</p>
<p>The message produced by the heartbeat contains a sequence
counter and the time in milliseconds since the last beat, thus
providing insight into timing variationsn and deviations from the
nominal <i class="arg">delta</i>.</p></dd>
</dl>
</div>
<div id="section3" class="doctools_section"><h2><a name="section3">Bugs, Ideas, Feedback</a></h2>
<p>This document, and the package it describes, will undoubtedly contain
bugs and other problems.
Please report such in the category <em>debug</em> of the
<a href="http://core.tcl.tk/tcllib/reportlist">Tcllib Trackers</a>.
Please also report any ideas for enhancements you may have for either
package and/or documentation.</p>
<p>When proposing code changes, please provide <em>unified diffs</em>,
i.e the output of <b class="const">diff -u</b>.</p>
<p>Note further that <em>attachments</em> are strongly preferred over
inlined patches. Attachments can be made by going to the <b class="const">Edit</b>
form of the ticket immediately after its creation, and then using the
left-most button in the secondary navigation bar.</p>
</div>
<div id="keywords" class="doctools_section"><h2><a name="keywords">Keywords</a></h2>
<p><a href="../../../../index.html#debug">debug</a>, <a href="../../../../index.html#heartbeat">heartbeat</a>, <a href="../../../../index.html#log">log</a>, <a href="../../../../index.html#narrative">narrative</a>, <a href="../../../../index.html#trace">trace</a></p>
</div>
<div id="category" class="doctools_section"><h2><a name="category">Category</a></h2>
<p>debugging, tracing, and logging</p>
</div>
<div id="copyright" class="doctools_section"><h2><a name="copyright">Copyright</a></h2>
<p>Copyright &copy; 200?, Colin McCormack, Wub Server Utilities<br>
Copyright &copy; 2012, Andreas Kupries &lt;andreas_kupries@users.sourceforge.net&gt;</p>
</div>
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