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9<title>GXClearMemMetric</title>
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13
14<h1 align="left">GXClearMemMetric</h1>
15
16<h2>Syntax</h2>
17<dl><dd><pre class="construction">
18#include &lt;revolution/gx.h&gt;
19
20void GXClearMemMetric( void  );
21</pre></dd></dl>
22
23<h2>Arguments</h2>
24<p>None.</p>
25
26<h2>Return Values</h2>
27<p>None.</p>
28
29<H2>Description</H2>
30<P>The graphics processor (GP) can count many internal events that give detailed information on performance.&nbsp;This function clears the memory request counters. These counters can be read by calling the <A href="GXReadMemMetric.html"><CODE>GXReadMemMetric</CODE></A> function. Since the counters are cleared by writing CPU-accessible registers, this function should <strong>not</strong> be used in a display list.</P>
31<DL><DD><CODE>u32 cp_req, tc_req, cpu_rd_req, cpu_wr_req, dsp_req, io_req, vi_req, pe_req;<BR> u32 rf_req, fi_req;<BR> <BR> GXReadClearMetric();<BR> <BR> // Draw Object(s)</CODE></DD></DL>
32<DL><DD><CODE>// wait until object drawn<BR> GXSetDrawSync(0xbeef);<BR> while (0xbeef != GXReadDrawSync())<BR> &nbsp;&nbsp;&nbsp; ;<BR> <BR> metric = GXReadMemMetric(&amp;cp_req,<BR> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &amp;tc_req,<BR> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &amp;cpu_rd_req,<BR> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &amp;cpu_wr_req,<BR> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &amp;dsp_req,<BR> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &amp;io_req,<BR> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &amp;vi_req,<BR> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &amp;pe_req,<BR> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &amp;rf_req,<BR> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &amp;fi_req );&nbsp;&nbsp; // returns request counter<BR> <BR> OSReport(&quot;Number command processor requests:&nbsp; %d\n&quot;, cp_req);</CODE></DD></DL>
33
34<h2>See Also</h2>
35<P class="reference">
36<a href="GXReadPixMetric.html">GXReadPixMetric</a>,
37<a href="GXClearPixMetric.html">GXClearPixMetric</a>,
38<a href="GXSetVCacheMetric.html">GXSetVCacheMetric</a>,
39<a href="GXReadVCacheMetric.html">GXReadVCacheMetric</a>,
40<a href="GXClearVCacheMetric.html">GXClearVCacheMetric</a>,
41<a href="GXSetGPMetric.html">GXSetGPMetric</a>,
42<a href="GXReadGPMetric.html">GXReadGPMetric</a>,
43<a href="GXClearGPMetric.html">GXClearGPMetric</a>
44</p>
45
46<H2>Revision History</H2>
47<P>
482006/03/01 Initial version.<br>
49</P>
50
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