1 2 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> 3 <html><head><title>Python: module telemetry.core.tracing_controller</title> 4 <meta charset="utf-8"> 5 </head><body bgcolor="#f0f0f8"> 6 7 <table width="100%" cellspacing=0 cellpadding=2 border=0 summary="heading"> 8 <tr bgcolor="#7799ee"> 9 <td valign=bottom> <br> 10 <font color="#ffffff" face="helvetica, arial"> <br><big><big><strong><a href="telemetry.html"><font color="#ffffff">telemetry</font></a>.<a href="telemetry.core.html"><font color="#ffffff">core</font></a>.tracing_controller</strong></big></big></font></td 11 ><td align=right valign=bottom 12 ><font color="#ffffff" face="helvetica, arial"><a href=".">index</a><br><a href="../telemetry/core/tracing_controller.py">telemetry/core/tracing_controller.py</a></font></td></tr></table> 13 <p><tt># Copyright 2014 The Chromium Authors. All rights reserved.<br> 14 # Use of this source code is governed by a BSD-style license that can be<br> 15 # found in the LICENSE file.</tt></p> 16 <p> 17 <table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section"> 18 <tr bgcolor="#ee77aa"> 19 <td colspan=3 valign=bottom> <br> 20 <font color="#ffffff" face="helvetica, arial"><big><strong>Classes</strong></big></font></td></tr> 21 22 <tr><td bgcolor="#ee77aa"><tt> </tt></td><td> </td> 23 <td width="100%"><dl> 24 <dt><font face="helvetica, arial"><a href="__builtin__.html#object">__builtin__.object</a> 25 </font></dt><dd> 26 <dl> 27 <dt><font face="helvetica, arial"><a href="telemetry.core.tracing_controller.html#TracingController">TracingController</a> 28 </font></dt></dl> 29 </dd> 30 </dl> 31 <p> 32 <table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section"> 33 <tr bgcolor="#ffc8d8"> 34 <td colspan=3 valign=bottom> <br> 35 <font color="#000000" face="helvetica, arial"><a name="TracingController">class <strong>TracingController</strong></a>(<a href="__builtin__.html#object">__builtin__.object</a>)</font></td></tr> 36 37 <tr><td bgcolor="#ffc8d8"><tt> </tt></td><td> </td> 38 <td width="100%">Methods defined here:<br> 39 <dl><dt><a name="TracingController-IsChromeTracingSupported"><strong>IsChromeTracingSupported</strong></a>(self)</dt><dd><tt>Returns whether chrome tracing is supported.</tt></dd></dl> 40 41 <dl><dt><a name="TracingController-Start"><strong>Start</strong></a>(self, trace_options, category_filter, timeout<font color="#909090">=10</font>)</dt><dd><tt>Starts tracing.<br> 42 <br> 43 trace_options specifies which tracing systems to activate. Category filter<br> 44 allows fine-tuning of the data that are collected by the selected tracing<br> 45 systems.<br> 46 <br> 47 Some tracers are process-specific, e.g. chrome tracing, but are not<br> 48 guaranteed to be supported. In order to support tracing of these kinds of<br> 49 tracers, Start will succeed *always*, even if the tracing systems you have<br> 50 requested are not supported.<br> 51 <br> 52 If you absolutely require a particular tracer to exist, then check<br> 53 for its support after you have started the process in question. Or, have<br> 54 your code fail gracefully when the data you require is not present in the<br> 55 resulting trace.</tt></dd></dl> 56 57 <dl><dt><a name="TracingController-Stop"><strong>Stop</strong></a>(self)</dt><dd><tt>Stops tracing and returns a TraceValue.</tt></dd></dl> 58 59 <dl><dt><a name="TracingController-__init__"><strong>__init__</strong></a>(self, tracing_controller_backend)</dt><dd><tt>Provides control of the tracing systems supported by telemetry.</tt></dd></dl> 60 61 <hr> 62 Data descriptors defined here:<br> 63 <dl><dt><strong>__dict__</strong></dt> 64 <dd><tt>dictionary for instance variables (if defined)</tt></dd> 65 </dl> 66 <dl><dt><strong>__weakref__</strong></dt> 67 <dd><tt>list of weak references to the object (if defined)</tt></dd> 68 </dl> 69 <dl><dt><strong>is_tracing_running</strong></dt> 70 </dl> 71 </td></tr></table></td></tr></table> 72 </body></html>
