Synnefo » snf-ganeti

  def _TryStat(name):

    try:

      os.stat(name)

      return True

    except EnvironmentError, err:

      if err.errno in (errno.ENOENT, errno.ENOTDIR):

        return False

      elif err.errno == errno.EINVAL:

        raise RetryAgain(err)

      raise

  assert isinstance(pid, int), "pid must be an integer"

  proc_entry = "/proc/%d/status" % pid

  # /proc in a multiprocessor environment can have strange behaviors.

  # Retry the os.stat a few times until we get a good result.

    return Retry(_TryStat, (0.01, 1.5, 0.1), 0.5, args=[proc_entry])

  except RetryTimeout, err:

    err.RaiseInner()