Android: splits cache_control and perf_control.

build/android/pylib/perf/thermal_throttle.py

 # Copyright (c) 2012 The Chromium 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
 
+
 class ThermalThrottle(object):
-  """Class to detect and track thermal throttling
+  """Class to detect and track thermal throttling.
 
   Usage:
     Wait for IsThrottled() to be False before running test
     After running test call HasBeenThrottled() to find out if the
     test run was affected by thermal throttling.
 
     Currently assumes an OMap device.
   """
+
   def __init__(self, adb):
     self._adb = adb
     self._throttled = False
 
 
   def HasBeenThrottled(self):
-    """ True if there has been any throttling since the last call to
-        HasBeenThrottled or IsThrottled
+    """True if there has been any throttling since the last call to
+       HasBeenThrottled or IsThrottled.
     """
     return self._ReadLog()
 
   def IsThrottled(self):
-    """True if currently throttled"""
+    """True if currently throttled."""
     self._ReadLog()
     return self._throttled
 
   def _ReadLog(self):
     has_been_throttled = False
     serial_number = self._adb.Adb().GetSerialNumber()
     log = self._adb.RunShellCommand('dmesg -c')
     degree_symbol = unichr(0x00B0)
     for line in log:
       if 'omap_thermal_throttle' in line:
@@ skipping 23 matching lines @@
 
       # Print temperature of battery, to give a system temperature
       dumpsys_log = self._adb.RunShellCommand('dumpsys battery')
       for line in dumpsys_log:
         if 'temperature' in line:
           btemp = float([s for s in line.split() if s.isdigit()][0]) / 10.0
           logging.debug(u'Current battery temperature of %s = %3.1f%sC',
                         serial_number, btemp, degree_symbol)
 
     return has_been_throttled