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| <html><head><title>Python: module telemetry.core.tracing_controller</title> |
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| <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 |
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| ><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> |
| <p><tt># Copyright 2014 The Chromium Authors. All rights reserved.<br> |
| # Use of this source code is governed by a BSD-style license that can be<br> |
| # found in the LICENSE file.</tt></p> |
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| <font color="#ffffff" face="helvetica, arial"><big><strong>Classes</strong></big></font></td></tr> |
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| <tr><td bgcolor="#ee77aa"><tt> </tt></td><td> </td> |
| <td width="100%"><dl> |
| <dt><font face="helvetica, arial"><a href="__builtin__.html#object">__builtin__.object</a> |
| </font></dt><dd> |
| <dl> |
| <dt><font face="helvetica, arial"><a href="telemetry.core.tracing_controller.html#TracingController">TracingController</a> |
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| <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> |
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| <tr><td bgcolor="#ffc8d8"><tt> </tt></td><td> </td> |
| <td width="100%">Methods defined here:<br> |
| <dl><dt><a name="TracingController-IsChromeTracingSupported"><strong>IsChromeTracingSupported</strong></a>(self)</dt><dd><tt>Returns whether chrome tracing is supported.</tt></dd></dl> |
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| <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> |
| <br> |
| trace_options specifies which tracing systems to activate. Category filter<br> |
| allows fine-tuning of the data that are collected by the selected tracing<br> |
| systems.<br> |
| <br> |
| Some tracers are process-specific, e.g. chrome tracing, but are not<br> |
| guaranteed to be supported. In order to support tracing of these kinds of<br> |
| tracers, Start will succeed *always*, even if the tracing systems you have<br> |
| requested are not supported.<br> |
| <br> |
| If you absolutely require a particular tracer to exist, then check<br> |
| for its support after you have started the process in question. Or, have<br> |
| your code fail gracefully when the data you require is not present in the<br> |
| resulting trace.</tt></dd></dl> |
| |
| <dl><dt><a name="TracingController-Stop"><strong>Stop</strong></a>(self)</dt><dd><tt>Stops tracing and returns a TraceValue.</tt></dd></dl> |
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| <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> |
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| <hr> |
| Data descriptors defined here:<br> |
| <dl><dt><strong>__dict__</strong></dt> |
| <dd><tt>dictionary for instance variables (if defined)</tt></dd> |
| </dl> |
| <dl><dt><strong>__weakref__</strong></dt> |
| <dd><tt>list of weak references to the object (if defined)</tt></dd> |
| </dl> |
| <dl><dt><strong>is_tracing_running</strong></dt> |
| </dl> |
| </td></tr></table></td></tr></table> |
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