1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> 4<title>14.�Nulgrind: the minimal Valgrind tool</title> 5<link rel="stylesheet" type="text/css" href="vg_basic.css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="index.html" title="Valgrind Documentation"> 8<link rel="up" href="manual.html" title="Valgrind User Manual"> 9<link rel="prev" href="lk-manual.html" title="13.�Lackey: an example tool"> 10<link rel="next" href="FAQ.html" title="Valgrind FAQ"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<div><table class="nav" width="100%" cellspacing="3" cellpadding="3" border="0" summary="Navigation header"><tr> 14<td width="22px" align="center" valign="middle"><a accesskey="p" href="lk-manual.html"><img src="images/prev.png" width="18" height="21" border="0" alt="Prev"></a></td> 15<td width="25px" align="center" valign="middle"><a accesskey="u" href="manual.html"><img src="images/up.png" width="21" height="18" border="0" alt="Up"></a></td> 16<td width="31px" align="center" valign="middle"><a accesskey="h" href="index.html"><img src="images/home.png" width="27" height="20" border="0" alt="Up"></a></td> 17<th align="center" valign="middle">Valgrind User Manual</th> 18<td width="22px" align="center" valign="middle"><a accesskey="n" href="FAQ.html"><img src="images/next.png" width="18" height="21" border="0" alt="Next"></a></td> 19</tr></table></div> 20<div class="chapter"> 21<div class="titlepage"><div><div><h1 class="title"> 22<a name="nl-manual"></a>14.�Nulgrind: the minimal Valgrind tool</h1></div></div></div> 23<div class="toc"> 24<p><b>Table of Contents</b></p> 25<dl class="toc"><dt><span class="sect1"><a href="nl-manual.html#ms-manual.overview">14.1. Overview</a></span></dt></dl> 26</div> 27<p>To use this tool, you must specify 28<code class="option">--tool=none</code> on the Valgrind 29command line.</p> 30<div class="sect1"> 31<div class="titlepage"><div><div><h2 class="title" style="clear: both"> 32<a name="ms-manual.overview"></a>14.1.�Overview</h2></div></div></div> 33<p>Nulgrind is the simplest possible Valgrind tool. It performs no 34instrumentation or analysis of a program, just runs it normally. It is 35mainly of use for Valgrind's developers for debugging and regression 36testing.</p> 37<p>Nonetheless you can run programs with Nulgrind. They will run 38roughly 5 times more slowly than normal, for no useful effect. Note 39that you need to use the option <code class="option">--tool=none</code> to run 40Nulgrind (ie. not <code class="option">--tool=nulgrind</code>).</p> 41</div> 42</div> 43<div> 44<br><table class="nav" width="100%" cellspacing="3" cellpadding="2" border="0" summary="Navigation footer"> 45<tr> 46<td rowspan="2" width="40%" align="left"> 47<a accesskey="p" href="lk-manual.html"><<�13.�Lackey: an example tool</a>�</td> 48<td width="20%" align="center"><a accesskey="u" href="manual.html">Up</a></td> 49<td rowspan="2" width="40%" align="right">�<a accesskey="n" href="FAQ.html">Valgrind FAQ�>></a> 50</td> 51</tr> 52<tr><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td></tr> 53</table> 54</div> 55</body> 56</html> 57
