def await_unlocked(self):
while True:
timeout = (
fractionalSeconds(self._unlock_timestamp - datetime.utcnow())
if self._unlock_timestamp
else INDEFINITELY
)
if timeout is not None and timeout <= 0:
return
with self._unlocked:
self._unlocked.wait(timeout)
def run(self):
with self._sleepingTasks:
while self.active:
while not self._pq:
self._sleepingTasks.wait(99999)
sleep_time = self._pq[0][0] - datetime.utcnow()
if sleep_time > timedelta(0):
self._sleepingTasks.wait(fractionalSeconds(sleep_time))
else:
(time, task, args, kwargs) = heappop(self._pq)
callback = kwargs.pop('callback', None)
future = self.submit(task, *args, **kwargs)
if callback:
future.add_done_callback(callback)