blob: 45e0f607caf86974855dfc95f79cd01e85f32793 [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.
import errno, logging, os, shutil, tempfile, threading
from autotest_lib.client.bin import test, utils
from autotest_lib.client.cros import pyauto_test, rtc, sys_power
from autotest_lib.client.common_lib import error
'plugged_dim_ms': 1000,
'plugged_off_ms': 5000,
'plugged_suspend_ms': 10000,
'unplugged_dim_ms': 1000,
'unplugged_off_ms': 5000,
'unplugged_suspend_ms': 10000,
'disable_idle_suspend': 0,
'ignore_external_policy': 1,
class power_IdleSuspend(pyauto_test.PyAutoTest):
Verify power manager tries to suspend while idle.
This test does not actually allow the system to suspend. Instead,
it replaces /sys/power/state with a pipe and waits until "mem" is
written to it. Such a write would normally cause suspend.
version = 1
mounts = ()
def initialize(self):
super(power_IdleSuspend, self).initialize()
self.mounts = []
def setup_power_manager(self):
# create directory for temporary settings
self.tempdir = tempfile.mkdtemp(prefix='IdleSuspend.')'using temporary directory %s', self.tempdir)
# override power manager settings
for key, val in POWER_MANAGER_SETTINGS.iteritems():'overriding %s to %s', key, val)
tmp_path = '%s/%s' % (self.tempdir, key)
mount_path = '/usr/share/power_manager/%s' % key
utils.write_one_line(tmp_path, str(val))'mount --bind %s %s' % (tmp_path, mount_path))
# override /sys/power/state with fifo
fifo_path = '%s/sys_power_state' % self.tempdir
os.mkfifo(fifo_path)'mount --bind %s /sys/power/state' % fifo_path)
def wait_for_suspend(self):
# block reading new power state from /sys/power/state
sys_power_state = open('/sys/power/state')
self.new_power_state ='new power state: %s', self.new_power_state)
def run_once(self):
# stop power manager before reconfiguring'stopping powerd')'stop powerd')
# override power manager settings
# start thread to wait for suspend
self.new_power_state = None
thread = threading.Thread(target=self.wait_for_suspend)
# restart powerd to pick up new settings'restarting powerd')'start powerd')
# wait for idle suspend
thread.join(SUSPEND_TIMEOUT_MS / 1000.)
if thread.is_alive():
# thread join timed out - powerd didn't write to /sys/power/state
raise error.TestFail('timed out waiting for suspend')
if self.new_power_state is None:
# probably an exception in the thread, check the log
raise error.TestError('reader thread crashed')
if self.new_power_state.strip() != 'mem':
# oops, power manager wrote something other than "mem"
raise error.TestFail('bad power state written to /sys/power/state')
def cleanup(self):
# restore original power manager settings
for mount in self.mounts:'restoring %s', mount)'umount -l %s' % mount)
# restart powerd to pick up original settings'restarting powerd')'restart powerd')
super(power_IdleSuspend, self).cleanup()