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<body class="manpage">
<div id="header">
<h1>
libtraceevent(3) Manual Page
</h1>
<h2>NAME</h2>
<div class="sectionbody">
<p>tep_find_function,tep_find_function_address -
   Find function name / start address.
</p>
</div>
</div>
<div id="content">
<div class="sect1">
<h2 id="_synopsis">SYNOPSIS</h2>
<div class="sectionbody">
<div class="verseblock">
<pre class="content"><strong>#include <event-parse.h></strong>

const char *<strong>tep_find_function</strong>(struct tep_handle *<em>tep</em>, unsigned long long <em>addr</em>);
unsigned long long <strong>tep_find_function_address</strong>(struct tep_handle *<em>tep</em>, unsigned long long <em>addr</em>);</pre>
<div class="attribution">
</div></div>
</div>
</div>
<div class="sect1">
<h2 id="_description">DESCRIPTION</h2>
<div class="sectionbody">
<div class="paragraph"><p>These functions can be used to find function name and start address, by given
address. The given address does not have to be exact, it will select the function
that would contain it.</p></div>
<div class="paragraph"><p>The <strong>tep_find_function()</strong> function returns the function name, which contains the
given address <em>addr</em>. The <em>tep</em> argument is the trace event parser context.</p></div>
<div class="paragraph"><p>The <strong>tep_find_function_address()</strong> function returns the function start address,
by given address <em>addr</em>. The <em>addr</em> does not have to be exact, it will select the
function that would contain it. The <em>tep</em> argument is the trace event parser context.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_return_value">RETURN VALUE</h2>
<div class="sectionbody">
<div class="paragraph"><p>The <strong>tep_find_function()</strong> function returns the function name, or NULL in case
it cannot be found.</p></div>
<div class="paragraph"><p>The <strong>tep_find_function_address()</strong> function returns the function start address,
or 0 in case it cannot be found.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_example">EXAMPLE</h2>
<div class="sectionbody">
<div class="listingblock">
<div class="content"><!-- Generator: GNU source-highlight
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="font-weight: bold"><span style="color: #000080">#include</span></span> <span style="color: #FF0000"><event-parse.h></span>
<span style="color: #990000">...</span>
<span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">tep_handle</span> <span style="color: #990000">*</span>tep <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">tep_alloc</span></span><span style="color: #990000">();</span>
<span style="color: #990000">...</span>
<span style="color: #009900">void</span> <span style="font-weight: bold"><span style="color: #000000">show_function</span></span><span style="color: #990000">(</span> <span style="color: #009900">unsigned</span> <span style="color: #009900">long</span> <span style="color: #009900">long</span> addr<span style="color: #990000">)</span>
<span style="color: #FF0000">{</span>
        <span style="font-weight: bold"><span style="color: #0000FF">const</span></span> <span style="color: #009900">char</span> <span style="color: #990000">*</span>fname <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">tep_find_function</span></span><span style="color: #990000">(</span>tep<span style="color: #990000">,</span> addr<span style="color: #990000">);</span>
        <span style="color: #009900">unsigned</span> <span style="color: #009900">long</span> <span style="color: #009900">long</span> fstart <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">tep_find_function_address</span></span><span style="color: #990000">(</span>tep<span style="color: #990000">,</span> addr<span style="color: #990000">);</span>

        <span style="font-style: italic"><span style="color: #9A1900">/* addr is in function named fname, starting at fstart address, at offset (addr - fstart) */</span></span>
<span style="color: #FF0000">}</span>
<span style="color: #990000">...</span></tt></pre></div></div>
</div>
</div>
<div class="sect1">
<h2 id="_files">FILES</h2>
<div class="sectionbody">
<div class="verseblock">
<pre class="content"><strong>event-parse.h</strong>
        Header file to include in order to have access to the library APIs.
<strong>-ltraceevent</strong>
        Linker switch to add when building a program that uses the library.</pre>
<div class="attribution">
</div></div>
</div>
</div>
<div class="sect1">
<h2 id="_see_also">SEE ALSO</h2>
<div class="sectionbody">
<div class="paragraph"><p><strong>libtraceevent</strong>(3), <strong>trace-cmd</strong>(1)</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_author">AUTHOR</h2>
<div class="sectionbody">
<div class="verseblock">
<pre class="content"><strong>Steven Rostedt</strong> <<a href="mailto:rostedt@goodmis.org">rostedt@goodmis.org</a>>, author of <strong>libtraceevent</strong>.
<strong>Tzvetomir Stoyanov</strong> <<a href="mailto:tz.stoyanov@gmail.com">tz.stoyanov@gmail.com</a>>, author of this man page.</pre>
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<h2 id="_reporting_bugs">REPORTING BUGS</h2>
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<div class="paragraph"><p>Report bugs to  <<a href="mailto:linux-trace-devel@vger.kernel.org">linux-trace-devel@vger.kernel.org</a>></p></div>
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<h2 id="_license">LICENSE</h2>
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<div class="paragraph"><p>libtraceevent is Free Software licensed under the GNU LGPL 2.1</p></div>
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<h2 id="_resources">RESOURCES</h2>
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<div class="paragraph"><p><a href="https://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git/">https://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git/</a></p></div>
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Last updated
 2022-03-24 23:40:51 UTC
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