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<html xmlns:cf="http://docbook.sourceforge.net/xmlns/chunkfast/1.0"><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>8.燦ulgrind: the "null" tool</title><link rel="stylesheet" href="vg_basic.css" type="text/css"><meta name="generator" content="DocBook XSL Stylesheets V1.69.0"><link rel="start" href="index.html" title="Valgrind Documentation"><link rel="up" href="manual.html" title="Valgrind User Manual"><link rel="prev" href="hg-manual.html" title="7.燞elgrind: a data-race detector"><link rel="next" href="lk-manual.html" title="9.燣ackey: a simple profiler and memory tracer"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div><table class="nav" width="100%" cellspacing="3" cellpadding="3" border="0" summary="Navigation header"><tr><td width="22px" align="center" valign="middle"><a accesskey="p" href="hg-manual.html"><img src="images/prev.png" width="18" height="21" border="0" alt="Prev"></a></td><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><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><th align="center" valign="middle">Valgrind User Manual</th><td width="22px" align="center" valign="middle"><a accesskey="n" href="lk-manual.html"><img src="images/next.png" width="18" height="21" border="0" alt="Next"></a></td></tr></table></div><div class="chapter" lang="en"><div class="titlepage"><div><div><h2 class="title"><a name="nl-manual"></a>8.燦ulgrind: the "null" tool</h2></div><div><h3 class="subtitle"><i>A tool that does not very much at all</i></h3></div></div></div><p>Nulgrind is the minimal tool for Valgrind. It does noinitialisation or finalisation, and adds no instrumentation tothe program's code. It is mainly of use for Valgrind'sdevelopers for debugging and regression testing.</p><p>Nonetheless you can run programs with Nulgrind. They will runroughly 5 times more slowly than normal, for no useful effect. Notethat you need to use the option <code class="option">--tool=none</code> to runNulgrind (ie. not <code class="option">--tool=nulgrind</code>).</p></div><div><br><table class="nav" width="100%" cellspacing="3" cellpadding="2" border="0" summary="Navigation footer"><tr><td rowspan="2" width="40%" align="left"><a accesskey="p" href="hg-manual.html"><<⌨️ 快捷键说明
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