tools/perf/measurements/webrtc.py

   1 # Copyright 2014 The Chromium Authors. All rights reserved.
   2 # Use of this source code is governed by a BSD-style license that can be
   3 # found in the LICENSE file.
   4
   5 from metrics import cpu
   6 from metrics import memory
   7 from metrics import power
   8 from telemetry.page import page_measurement
   9
  10
  11 class WebRTC(page_measurement.PageMeasurement):
  12   """Gathers WebRTC-related metrics on a page set."""
  13
  14   def __init__(self):
  15     super(WebRTC, self).__init__('RunWebrtc')
  16     self._cpu_metric = None
  17     self._memory_metric = None
  18     self._power_metric = None
  19
  20   def WillStartBrowser(self, browser):
  21     self._power_metric = power.PowerMetric(browser)
  22
  23   def DidStartBrowser(self, browser):
  24     self._cpu_metric = cpu.CpuMetric(browser)
  25     self._memory_metric = memory.MemoryMetric(browser)
  26
  27   def DidNavigateToPage(self, page, tab):
  28     self._cpu_metric.Start(page, tab)
  29     self._memory_metric.Start(page, tab)
  30     self._power_metric.Start(page, tab)
  31
  32   def CustomizeBrowserOptions(self, options):
  33     memory.MemoryMetric.CustomizeBrowserOptions(options)
  34     options.AppendExtraBrowserArgs('--use-fake-device-for-media-stream')
  35     options.AppendExtraBrowserArgs('--use-fake-ui-for-media-stream')
  36     power.PowerMetric.CustomizeBrowserOptions(options)
  37
  38   def MeasurePage(self, page, tab, results):
  39     """Measure the page's performance."""
  40     self._memory_metric.Stop(page, tab)
  41     self._memory_metric.AddResults(tab, results)
  42
  43     self._cpu_metric.Stop(page, tab)
  44     self._cpu_metric.AddResults(tab, results)
  45
  46     self._power_metric.Stop(page, tab)
  47     self._power_metric.AddResults(tab, results)