OLD | NEW |
1 # Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 # Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 # Use of this source code is governed by a BSD-style license that can be | 2 # Use of this source code is governed by a BSD-style license that can be |
3 # found in the LICENSE file. | 3 # found in the LICENSE file. |
4 | 4 |
5 import logging | 5 import logging |
6 | 6 |
7 class ThermalThrottle(object): | 7 from perf import thermal_throttle |
8 """Class to detect and track thermal throttling | |
9 | 8 |
10 Usage: | 9 # TODO(bulach): remove once all references to ThermalThrottle are fixed. |
11 Wait for IsThrottled() to be False before running test | 10 class ThermalThrottle(thermal_throttle.ThermalThrottle): |
12 After running test call HasBeenThrottled() to find out if the | |
13 test run was affected by thermal throttling. | |
14 | |
15 Currently assumes an OMap device. | |
16 """ | |
17 def __init__(self, adb): | 11 def __init__(self, adb): |
18 self._adb = adb | 12 super(ThermalThrottle, self).__init__(adb) |
19 self._throttled = False | |
20 | |
21 | |
22 def HasBeenThrottled(self): | |
23 """ True if there has been any throttling since the last call to | |
24 HasBeenThrottled or IsThrottled | |
25 """ | |
26 return self._ReadLog() | |
27 | |
28 def IsThrottled(self): | |
29 """True if currently throttled""" | |
30 self._ReadLog() | |
31 return self._throttled | |
32 | |
33 def _ReadLog(self): | |
34 has_been_throttled = False | |
35 serial_number = self._adb.Adb().GetSerialNumber() | |
36 log = self._adb.RunShellCommand('dmesg -c') | |
37 degree_symbol = unichr(0x00B0) | |
38 for line in log: | |
39 if 'omap_thermal_throttle' in line: | |
40 if not self._throttled: | |
41 logging.warning('>>> Device %s Thermally Throttled', serial_number) | |
42 self._throttled = True | |
43 has_been_throttled = True | |
44 if 'omap_thermal_unthrottle' in line: | |
45 if self._throttled: | |
46 logging.warning('>>> Device %s Thermally Unthrottled', serial_number) | |
47 self._throttled = False | |
48 has_been_throttled = True | |
49 if 'throttle_delayed_work_fn' in line: | |
50 temp = float([s for s in line.split() if s.isdigit()][0]) / 1000.0 | |
51 logging.info(u' Device %s Thermally Thottled at %3.1f%sC', | |
52 serial_number, temp, degree_symbol) | |
53 | |
54 if logging.getLogger().isEnabledFor(logging.DEBUG): | |
55 # Print temperature of CPU SoC. | |
56 omap_temp_file = ('/sys/devices/platform/omap/omap_temp_sensor.0/' | |
57 'temperature') | |
58 if self._adb.FileExistsOnDevice(omap_temp_file): | |
59 tempdata = self._adb.GetFileContents(omap_temp_file) | |
60 temp = float(tempdata[0]) / 1000.0 | |
61 logging.debug(u'Current OMAP Temperature of %s = %3.1f%sC', | |
62 serial_number, temp, degree_symbol) | |
63 | |
64 # Print temperature of battery, to give a system temperature | |
65 dumpsys_log = self._adb.RunShellCommand('dumpsys battery') | |
66 for line in dumpsys_log: | |
67 if 'temperature' in line: | |
68 btemp = float([s for s in line.split() if s.isdigit()][0]) / 10.0 | |
69 logging.debug(u'Current battery temperature of %s = %3.1f%sC', | |
70 serial_number, btemp, degree_symbol) | |
71 | |
72 return has_been_throttled | |
OLD | NEW |