1 # Copyright (c) 2014 The Chromium OS 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 import logging, time 6 7 from autotest_lib.client.bin import test, utils 8 from autotest_lib.client.common_lib import error 9 from autotest_lib.client.cros import perf 10 from autotest_lib.client.cros import service_stopper 11 12 class graphics_PerfControl(test.test): 13 version = 1 14 15 # None-init vars used by cleanup() here, in case setup() fails 16 _services = None 17 18 def initialize(self): 19 self._services = service_stopper.ServiceStopper(['ui']) 20 21 def cleanup(self): 22 if self._services: 23 self._services.restore_services() 24 25 def run_once(self): 26 logging.info(utils.get_board_with_frequency_and_memory()) 27 28 # If UI is running, we must stop it and restore later. 29 self._services.stop_services() 30 31 # Wrap the test run inside of a PerfControl instance to make machine 32 # behavior more consistent. 33 with perf.PerfControl() as pc: 34 if not pc.verify_is_valid(): 35 raise error.TestError(pc.get_error_reason()) 36 # Do nothing for a short while so the PerfControl thread is collecting 37 # real data. 38 time.sleep(10) 39 40 if not pc.verify_is_valid(): 41 raise error.TestError(pc.get_error_reason()) 42
