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      1 # Copyright (c) 2011 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 re
      6 from autotest_lib.client.bin import test
      7 from autotest_lib.client.common_lib import error, utils
      8 
      9 class platform_HighResTimers(test.test):
     10     version = 1
     11 
     12     def check_timers(self):
     13         timer_list = open('/proc/timer_list')
     14         for line in timer_list.readlines():
     15             match = re.search('^\s*\.resolution:\s(\d+)\s*nsecs$', line)
     16             if match:
     17                 res = int(match.group(1))
     18                 if (res != 1):
     19                     raise error.TestError('Timer resolution %d != 1 ns' % res)
     20 
     21     def run_once(self):
     22         try:
     23             self.check_timers()
     24         except error.TestError, e:
     25             raise error.TestFail(e)
     26