telemetry.core.tracing_controller | index telemetry/core/tracing_controller.py

`# Copyright 2014 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.`

Classes
`` |  | __builtin__.object TracingController
class TracingController(__builtin__.object)
`` |  | Methods defined here: IsChromeTracingSupported(self) `Returns whether chrome tracing is supported.` Start(self, trace_options, category_filter, timeout=10) `Starts tracing. trace_options specifies which tracing systems to activate. Category filter allows fine-tuning of the data that are collected by the selected tracing systems. Some tracers are process-specific, e.g. chrome tracing, but are not guaranteed to be supported. In order to support tracing of these kinds of tracers, Start will succeed *always*, even if the tracing systems you have requested are not supported. If you absolutely require a particular tracer to exist, then check for its support after you have started the process in question. Or, have your code fail gracefully when the data you require is not present in the resulting trace.` Stop(self) `Stops tracing and returns a TraceValue.` __init__(self, tracing_controller_backend) `Provides control of the tracing systems supported by telemetry.` Data descriptors defined here: __dict__ `dictionary for instance variables (if defined)` __weakref__ `list of weak references to the object (if defined)` is_tracing_running