def lock(self, timeout=None, poll_rate=None): # poll_rate & timeout as deltas or micros
timeout = ndelta(timeout) or self.timeout or delta(0)
poll_rate = ndelta(poll_rate) or self.poll_rate
start = time()
while not self._attempt_lock():
if poll_rate:
poll_rate.sleep()
if time() > start + timeout:
break
return self.locked
def __init__(self, slot_dir, ascendant_depth=1, process_breadth=None): # generally 5ms times the number of processes you gotta deal with
self.slot_dir = slot_dir
self.ascendant_depth = ascendant_depth
self.slot_takeover_timeout = ndelta(ms=(process_breadth or 20)*50)
def __init__(self, name, timeout=None, poll_rate=None): # poll_rate & timeout as deltas or micros
super(FileLock, self).__init__()
self.lock_dir = '%s.lock' % str(name)
self.locked = False
self.poll_rate = ndelta(poll_rate)
self.timeout = ndelta(timeout)
