blob: adb737c20c50e5f6cbef120708f9b7e003c6cd7a [file] [log] [blame]
# Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
This is a profiler class for copying Profile-Guided-Optimization (PGO) data
files back to the host. When Chrome is built with -fprofile-generate, it dumps
its PGO data in a directory that this test copies back to test.profdir.
The PGO data is found where the build happens in the chroot, which is hardcoded
as the source_dir below.
import logging
import os
import shutil
import tarfile
from autotest_lib.client.bin import profiler
from autotest_lib.client.common_lib import error
from autotest_lib.client.cros import cros_ui
class pgo(profiler.profiler):
"""The pgo profiler collects PGO data for Chrome."""
version = 1
def initialize(self, source_dir='/tmp/pgo/chrome'):
self._source_dir = source_dir
def start(self, test):
# Remove the .gcda files first.
if os.path.exists(self._source_dir):
def stop(self, test):
if not cros_ui.stop_and_wait_for_chrome_to_exit(timeout_secs=40):
raise error.TestError('Could not stop Chrome')
if os.path.isdir(self._source_dir):
tar =, 'pgo.tar.bz2'),
tar.add(self._source_dir, arcname='chrome', recursive=True)
versionfile = '/opt/google/chrome/profilelocation'
if os.path.isfile(versionfile):
os.path.join(test.profdir, 'profiledestination'))
logging.error('PGO dir: %s not found', self._source_dir)