Windows2003-3790/sdktools/trace/traceview/traceviewhelp/joiningexistingtracelogsessions.htm

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<title>Joining Existing Trace Log Sessions</title>
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<p><b><span style='font-size:24.0pt'>Joining Existing Trace Log Sessions</span></b></p>
<p style='margin-bottom:12.0pt'>If an attempt is made to create or start a
trace log session in TraceView, as described in <a
href="CreatingNewTraceLogSessions.htm">Creating New Trace Log Sessions</a>, and
that trace log session is already active on the system, a warning dialog is
displayed:</p>
<p style='margin-bottom:12.0pt'>&nbsp;<img border=0 width=875 height=410
src="JoiningExistingTraceLogSessions_files/image001.jpg"></p>
<p style='margin-bottom:12.0pt'>&nbsp;<span style='font-family:Verdana'><br>
</span>The user is given three possible options at this point:</p>
<p style='margin-left:50.25pt;text-indent:-32.25pt'>1.)<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>Stop the session and restart it, allowing TraceView to exercise full control
over the session.<span style='font-size:7.0pt'>&nbsp;</span></p>
<p style='margin-left:50.25pt;text-indent:-32.25pt'>2.)<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>Join the session in progress.&nbsp; TraceView will still allow updates
to the session, but will never attempt to stop such a session. &nbsp;As such,
the trace log session will be unstoppable and non-removable without restarting
TraceView.<span style='font-size:7.0pt'>&nbsp;</span></p>
<p style='margin-left:50.25pt;text-indent:-32.25pt'>3.)<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>Abort the start operation altogether.</p>
<p style='margin-bottom:12.0pt'>It can be desirable to have multiple trace
event consumers consume events from the same trace provider.&nbsp; In addition,
it is often desirable to join the NT Kernel Logger in process to access system
events, or events from boot-start drivers.</p>
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<p><b><span style='font-size:10.0pt;font-family:"MS Sans Serif"'><EFBFBD> Microsoft
Corporation 2002</span></b></p>
<h3><span style='font-weight:normal'>&nbsp;</span></h3>
<p style='margin-bottom:12.0pt'>&nbsp;</p>
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