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#!/usr/bin/env python
#
# Copyright 2015 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.
import logging
import optparse
import os
import sys
import webbrowser
sys.path.append(os.path.join(os.path.dirname(__file__), os.pardir,
'build', 'android'))
from profile_chrome import chrome_startup_controller
from profile_chrome import controllers
from profile_chrome import flags
from profile_chrome import profiler
from profile_chrome import systrace_controller
from profile_chrome import ui
from pylib.device import device_utils
def _CreateOptionParser():
parser = optparse.OptionParser(description='Record about://tracing profiles '
'from Android browsers startup, combined with '
'Android systrace. See http://dev.chromium.org'
'/developers/how-tos/trace-event-profiling-'
'tool for detailed instructions for '
'profiling.')
parser.add_option('--url', help='URL to visit on startup. Default: '
'https://www.google.com. An empty URL launches Chrome with'
' a MAIN action instead of VIEW.',
default='https://www.google.com', metavar='URL')
parser.add_option('--cold', help='Flush the OS page cache before starting the'
' browser. Note that this require a device with root '
'access.', default=False, action='store_true')
parser.add_option_group(flags.SystraceOptions(parser))
parser.add_option_group(flags.OutputOptions(parser))
browsers = sorted(profiler.GetSupportedBrowsers().keys())
parser.add_option('-b', '--browser', help='Select among installed browsers. '
'One of ' + ', '.join(browsers) + ', "stable" is used by '
'default.', type='choice', choices=browsers,
default='stable')
parser.add_option('-v', '--verbose', help='Verbose logging.',
action='store_true')
parser.add_option('-z', '--compress', help='Compress the resulting trace '
'with gzip. ', action='store_true')
parser.add_option('-t', '--time', help='Stops tracing after N seconds, 0 to '
'manually stop (startup trace ends after at most 5s).',
default=5, metavar='N', type='int')
return parser
def main():
parser = _CreateOptionParser()
options, _ = parser.parse_args()
if options.verbose:
logging.getLogger().setLevel(logging.DEBUG)
devices = device_utils.DeviceUtils.HealthyDevices()
if len(devices) != 1:
logging.error('Exactly 1 device must be attached.')
return 1
device = devices[0]
package_info = profiler.GetSupportedBrowsers()[options.browser]
if options.systrace_categories in ['list', 'help']:
ui.PrintMessage('\n'.join(
systrace_controller.SystraceController.GetCategories(device)))
return 0
systrace_categories = (options.systrace_categories.split(',')
if options.systrace_categories else [])
enabled_controllers = []
# Enable the systrace and chrome controller. The systrace controller should go
# first because otherwise the resulting traces miss early systrace data.
if systrace_categories:
enabled_controllers.append(systrace_controller.SystraceController(
device, systrace_categories, False))
enabled_controllers.append(
chrome_startup_controller.ChromeStartupTracingController(
device, package_info, options.cold, options.url))
if options.output:
options.output = os.path.expanduser(options.output)
result = profiler.CaptureProfile(enabled_controllers,
options.time,
output=options.output,
compress=options.compress,
write_json=options.json)
if options.view:
if sys.platform == 'darwin':
os.system('/usr/bin/open %s' % os.path.abspath(result))
else:
webbrowser.open(result)
if __name__ == '__main__':
sys.exit(main())
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