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113 lines
6.1 KiB
HTML
113 lines
6.1 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- Copyright (C) 1988-2019 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with the
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Invariant Sections being "Free Software" and "Free Software Needs
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Free Documentation", with the Front-Cover Texts being "A GNU Manual,"
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and with the Back-Cover Texts as in (a) below.
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(a) The FSF's Back-Cover Text is: "You are free to copy and modify
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this GNU Manual. Buying copies from GNU Press supports the FSF in
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developing GNU and promoting software freedom." -->
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Tracepoint Passcounts (Debugging with GDB)</title>
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<meta name="description" content="Tracepoint Passcounts (Debugging with GDB)">
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<meta name="keywords" content="Tracepoint Passcounts (Debugging with GDB)">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Set-Tracepoints.html#Set-Tracepoints" rel="up" title="Set Tracepoints">
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<link href="Tracepoint-Conditions.html#Tracepoint-Conditions" rel="next" title="Tracepoint Conditions">
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<link href="Enable-and-Disable-Tracepoints.html#Enable-and-Disable-Tracepoints" rel="prev" title="Enable and Disable Tracepoints">
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</style>
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</head>
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<body lang="en">
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<a name="Tracepoint-Passcounts"></a>
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<div class="header">
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<p>
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Next: <a href="Tracepoint-Conditions.html#Tracepoint-Conditions" accesskey="n" rel="next">Tracepoint Conditions</a>, Previous: <a href="Enable-and-Disable-Tracepoints.html#Enable-and-Disable-Tracepoints" accesskey="p" rel="prev">Enable and Disable Tracepoints</a>, Up: <a href="Set-Tracepoints.html#Set-Tracepoints" accesskey="u" rel="up">Set Tracepoints</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="Tracepoint-Passcounts-1"></a>
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<h4 class="subsection">13.1.3 Tracepoint Passcounts</h4>
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<dl compact="compact">
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<dd><a name="index-passcount"></a>
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<a name="index-tracepoint-pass-count"></a>
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</dd>
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<dt><code>passcount <span class="roman">[</span><var>n</var> <span class="roman">[</span><var>num</var><span class="roman">]]</span></code></dt>
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<dd><p>Set the <em>passcount</em> of a tracepoint. The passcount is a way to
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automatically stop a trace experiment. If a tracepoint’s passcount is
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<var>n</var>, then the trace experiment will be automatically stopped on
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the <var>n</var>’th time that tracepoint is hit. If the tracepoint number
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<var>num</var> is not specified, the <code>passcount</code> command sets the
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passcount of the most recently defined tracepoint. If no passcount is
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given, the trace experiment will run until stopped explicitly by the
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user.
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</p>
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<p>Examples:
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</p>
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<div class="smallexample">
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<pre class="smallexample">(gdb) <b>passcount 5 2</b> // Stop on the 5th execution of
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</pre><pre class="smallexample"> <code>// tracepoint 2</code>
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</pre><pre class="smallexample">
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(gdb) <b>passcount 12</b> // Stop on the 12th execution of the
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</pre><pre class="smallexample"> <code>// most recently defined tracepoint.</code>
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</pre><pre class="smallexample">(gdb) <b>trace foo</b>
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(gdb) <b>pass 3</b>
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(gdb) <b>trace bar</b>
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(gdb) <b>pass 2</b>
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(gdb) <b>trace baz</b>
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(gdb) <b>pass 1</b> // Stop tracing when foo has been
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</pre><pre class="smallexample"> <code>// executed 3 times OR when bar has</code>
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</pre><pre class="smallexample"> <code>// been executed 2 times</code>
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</pre><pre class="smallexample"> <code>// OR when baz has been executed 1 time.</code>
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</pre></div>
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</dd>
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</dl>
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</body>
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</html>
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