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| author | fche <fche> | 2014-05-22 16:52:01 +0000 |
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| committer | fche <fche> | 2014-05-22 16:52:01 +0000 |
| commit | c8ece3e5916bfe2330044a5f9abb6465111461c1 (patch) | |
| tree | 0cfbf83729c2ce509e820b080b711f3995c5496e /tapsets/API-ucallers.html | |
| parent | add new langref/*.html (diff) | |
add new tapsets/*.html
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| 1 | <html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>function::ucallers</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="SystemTap Tapset Reference Manual"><link rel="up" href="context_stp.html" title="Chapter 2. Context Functions"><link rel="prev" href="API-ubacktrace.html" title="function::ubacktrace"><link rel="next" href="API-uid.html" title="function::uid"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">function::ucallers</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-ubacktrace.html">Prev</a> </td><th width="60%" align="center">Chapter 2. Context Functions</th><td width="20%" align="right"> <a accesskey="n" href="API-uid.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-ucallers"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>function::ucallers — | ||
| 2 | Return first n elements of user stack backtrace | ||
| 3 | </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="programlisting"> | ||
| 4 | ucallers:string(n:long) | ||
| 5 | </pre></div><div class="refsect1"><a name="idm47958673940656"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>n</code></em></span></dt><dd><p> | ||
| 6 | number of levels to descend in the stack (not counting the top | ||
| 7 | level). If n is -1, print the entire stack. | ||
| 8 | </p></dd></dl></div></div><div class="refsect1"><a name="idm47958673937088"></a><h2>Description</h2><p> | ||
| 9 | This function returns a string of the first n hex | ||
| 10 | addresses from the backtrace of the user stack. Output may be | ||
| 11 | truncated as per maximum string length (MAXSTRINGLEN). | ||
| 12 | </p></div><div class="refsect1"><a name="idm47958673935600"></a><h2>Note</h2><p> | ||
| 13 | To get (full) backtraces for user space applications and shared | ||
| 14 | shared libraries not mentioned in the current script run stap with | ||
| 15 | -d /path/to/exe-or-so and/or add --ldd to load all needed unwind data. | ||
| 16 | </p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="API-ubacktrace.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="context_stp.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="API-uid.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">function::ubacktrace</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span class="phrase">function::uid</span></td></tr></table></div></body></html> | ||