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<img alt="Erlang logo" src="../../../../doc/erlang-logo.png"><br><small><a href="users_guide.html">User's Guide</a><br><a href="index.html">Reference Manual</a><br><a href="release_notes.html">Release Notes</a><br><a href="../pdf/percept-0.8.7.pdf">PDF</a><br><a href="../../../../doc/index.html">Top</a></small><p><strong>Percept</strong><br><strong>Reference Manual</strong><br><small>Version 0.8.7</small></p>
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<!-- refpage --><center><h1>percept_profile</h1></center>
<h3>MODULE</h3>
<div class="REFBODY">percept_profile</div>
<h3>MODULE SUMMARY</h3>
<div class="REFBODY">Percept Collector.</div>
<h3>DESCRIPTION</h3>
<div class="REFBODY"><p>
<p>Percept Collector</p>
<p>This module provides the user interface for the percept data
collection (profiling).
</p></p></div>
<h3><a name="id62768">DATA TYPES</a></h3>
<div class="REFBODY">
<a name="types"></a>
<dl>
<dt><strong><span class="code">percept_option() = procs | ports | exclusive</span></strong></dt>
<dd>
<a name="type-percept_option"></a> </dd>
</dl>
</div>
<h3>EXPORTS</h3>
<p><a name="start-1"><span class="bold_code">start(Filename::string()) -> {ok, Port} | {already_started, Port}</span></a><br></p>
<div class="REFBODY"><p><a name="start-1"></a>
<p>Equivalent to <span class="bold_code"><a href="#start-2">start(Filename, [procs])</a></span>.</p>
</p></div>
<p><a name="start-2"><span class="bold_code">start(Filename::string(), Options::[percept_option()]) -> {ok, Port} | {already_started, Port}</span></a><br></p>
<div class="REFBODY">
<p>Types:</p>
<div class="REFTYPES">
<span class="bold_code">Port = port()</span><br>
</div>
</div>
<div class="REFBODY"><p><a name="start-2"></a>
<p>Starts profiling with supplied options.
All events are stored in the file given by Filename.
An explicit call to stop/0 is needed to stop profiling.</p>
</p></div>
<p><a name="start-3"><span class="bold_code">start(Filename::string(), MFA::mfa(), Options::[percept_option()]) -> ok | {already_started, Port} | {error, not_started}</span></a><br></p>
<div class="REFBODY">
<p>Types:</p>
<div class="REFTYPES">
<span class="bold_code">Port = port()</span><br>
</div>
</div>
<div class="REFBODY"><p><a name="start-3"></a>
<p>Starts profiling at the entrypoint specified by the MFA. All events are collected,
this means that processes outside the scope of the entry-point are also profiled.
No explicit call to stop/0 is needed, the profiling stops when
the entry function returns.</p>
</p></div>
<p><a name="stop-0"><span class="bold_code">stop() -> ok | {error, not_started}</span></a><br></p>
<div class="REFBODY"><p><a name="stop-0"></a>
<p>Stops profiling.</p>
</p></div>
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