blob: 74f6db8219c726737d303823c8b0a45e5564ea99 [file] [log] [blame]
# Copyright (c) 2013 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.
import logging, os
from autotest_lib.client.bin import test
from autotest_lib.client.common_lib import error
from autotest_lib.client.common_lib.cros import chrome
CGROUP_DIR = '/sys/fs/cgroup/cpu/chrome_renderers'
FG_CGROUP_DIR = os.path.join(CGROUP_DIR, 'foreground')
BG_CGROUP_DIR = os.path.join(CGROUP_DIR, 'background')
class platform_ChromeCgroups(test.test):
version = 1
def _get_cgroup_tasks(self, cgroup_dir):
Returns the set of tasks in a cgroup.
@param cgroup_dir Directory containing the cgroup.
task_path = os.path.join(cgroup_dir, 'tasks')
task_file = open(task_path)
if not task_file:
raise error.TestError('failed to open %s' % task_path)
tasks = set(line.rstrip() for line in task_file.readlines())
task_file.close()'tasks in cgroup %s: %s', cgroup_dir, ','.join(tasks))
return tasks
def run_once(self):
Check that the chrome_renderers cgroups are created and that tasks
are placed in them.
with chrome.Chrome() as cr:
# Make sure the cgroup directories actually exist.
if not os.path.isdir(CGROUP_DIR):
raise error.TestFail('chrome_renderers cgroup does not exist')
if not os.path.isdir(FG_CGROUP_DIR):
raise error.TestFail('foreground cgroup does not exist')
if not os.path.isdir(BG_CGROUP_DIR):
raise error.TestFail('background cgroup does not exist')
# Open up two tabs in the same window. One should be in the foreground
# while the other is in the background.
tab1 = cr.browser.tabs[0]
tab2 = cr.browser.tabs.New()
# Make sure the foreground and background cgroups are non-empty.
if not self._get_cgroup_tasks(FG_CGROUP_DIR):
raise error.TestFail('no tasks in foreground cgroup')
if not self._get_cgroup_tasks(BG_CGROUP_DIR):
raise error.TestFail('no tasks in background cgroup')