skpbench: add warmup run

tools/skpbench/_hardware.py

 # Copyright 2016 Google Inc.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import time
 
 class Hardware:
   """Locks down and monitors hardware for benchmarking.
 
   This is a common base for classes that can control the specific hardware
   we are running on. Its purpose is to lock the hardware into a constant
   benchmarking mode for the duration of a 'with' block. e.g.:
 
     with hardware:
       run_benchmark()
 
   While benchmarking, the caller must call sanity_check() frequently to verify
   the hardware state has not changed.
 
   """
 
   def __init__(self):
-    self.kick_in_time = 0
+    self.warmup_time = 0
 
   def __enter__(self):
     return self
 
   def __exit__(self, exception_type, exception_value, traceback):
     pass
 
   def sanity_check(self):
     """Raises a HardwareException if any hardware state is not as expected."""
     pass
@@ skipping 49 matching lines @@
 
   @staticmethod
   def check_all(expectations, stringvalues):
     if len(stringvalues) != len(expectations):
       raise Exception("unexpected reading from hardware gauges "
                       "(expected %i values):\n%s" %
                       (len(expectations), '\n'.join(stringvalues)))
 
     for value, expected in zip(stringvalues, expectations):
       expected.check(value)