ENH: deprecate sophisticated MTimeSleep in favor of no sleeping at all

all invocations of mtimesleep() are left in the tests for now

testcases/utils.py

@@ -101,56 +101,7 @@ class FormatterWithTraceBack(logging.Formatter):
 		record.tbc = record.tb = self._tb()
 		return logging.Formatter.format(self, record)
 
-
-class MTimeSleep(object):
-	"""Sleep minimal duration needed to resolve changes in mtime of files in TMPDIR
-
-	mtime resolution depends on Python version AND underlying filesystem
-	"""
-	def __init__(self):
-		self._sleep = None
-
-	@staticmethod
-	def _get_good_sleep():
-		logSys = logging.getLogger("fail2ban.tests")
-		times = [1.5, 2., 5., 10.]
-		# we know that older Pythons simply have no ability to resolve
-		# at < sec level.
-		if sys.version_info[:2] > (2, 4):
-			times = [0.1] + times
-		ffid, name = tempfile.mkstemp()
-		tfile = os.fdopen(ffid, 'w')
-
-		for stime in times:
-			prev_stat, dt = "", 0.
-			# needs to be done 3 times (not clear why)
-			for i in xrange(3):
-				stat2 = os.stat(name)
-				if prev_stat:
-					dt = (stat2.st_mtime - prev_stat.st_mtime)
-				prev_stat = stat2
-				tfile.write("LOAD\n")
-				tfile.flush()
-				time.sleep(stime)
-
-			# check dt but also verify that we are not getting 'quick'
-			# stime simply by chance of catching second increment
-			if dt and \
-				not (stime < 1 and int(stat2.st_mtime) == stat2.st_mtime):
-					break
-		if not dt:
-			#from warnings import warn
-			logSys.warn("Could not deduce appropriate sleep time for tests. "
-						"Maximal tested one of %f sec will be used." % stime)
-		else:
-			logSys.debug("It was needed a sleep of %f to detect dt=%f mtime change"
-						% (stime, dt))
-		os.unlink(name)
-		return stime
-
-	def __call__(self):
-		if self._sleep is None:
-			self._sleep = self._get_good_sleep()
-		time.sleep(self._sleep)
-
-mtimesleep = MTimeSleep()
+def mtimesleep():
+	# no sleep now should be necessary since polling tracks now not only
+	# mtime but also ino and size
+	pass