threading_event
import logging
import threading
import time
def wait_for_event(e):
"""Wait for the event to be set before doing anything"""
logging.debug('wait_for_event starting')
event_is_set = e.wait()
logging.debug('event set: %s', event_is_set)
def wait_for_event_timeout(e, t):
"""Wait t seconds and then timeout"""
while not e.is_set():
logging.debug('wait_for_event_timeout starting')
event_is_set = e.wait(t)
logging.debug('event set: %s', event_is_set)
if event_is_set:
logging.debug('processing event')
else:
logging.debug('doing other work')
logging.basicConfig(
level=logging.DEBUG,
format='(%(threadName)-10s) %(message)s',
)
e = threading.Event()
t1 = threading.Thread(
name='block',
target=wait_for_event,
args=(e,),
)
t1.start()
t2 = threading.Thread(
name='nonblock',
target=wait_for_event_timeout,
args=(e, 2),
)
t2.start()
logging.debug('Waiting before calling Event.set()')
time.sleep(0.3)
e.set()
logging.debug('Event is set')
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