391 	time_str = ReadPerfOption(cmd, "", "time")
396 	if time_str != None and time_str != "":
643 def BadTimeStr(time_str):  argument
646 def ValidateTimeRanges(time_ranges, time_str):  argument
652 			BadTimeStr(time_str)
654 			BadTimeStr(time_str)
674 def ParseTimeStr(time_str, min_time, max_time):  argument
675 	if time_str == None or time_str == "":
678 	for r in time_str.split():
681 			BadTimeStr(time_str)
686 			BadTimeStr(time_str)
688 	ValidateTimeRanges(time_ranges, time_str)
747 		self.time_str = ExtractPerfOption(self.cmd, "", "time")
748 		self.time_ranges = ParseTimeStr(self.time_str, self.min_time, self.max_time)