📅  最后修改于: 2022-03-11 14:46:33.042000             🧑  作者: Mango
class Me(threading.Thread):
def __init__(self):
threading.Thread.__init__(self)
#flag to pause thread
self.paused = False
# Explicitly using Lock over RLock since the use of self.paused
# break reentrancy anyway, and I believe using Lock could allow
# one thread to pause the worker, while another resumes; haven't
# checked if Condition imposes additional limitations that would
# prevent that. In Python 2, use of Lock instead of RLock also
# boosts performance.
self.pause_cond = threading.Condition(threading.Lock())
def run(self):
while True:
with self.pause_cond:
while self.paused:
self.pause_cond.wait()
#thread should do the thing if
#not paused
print 'do the thing'
time.sleep(5)
def pause(self):
self.paused = True
# If in sleep, we acquire immediately, otherwise we wait for thread
# to release condition. In race, worker will still see self.paused
# and begin waiting until it's set back to False
self.pause_cond.acquire()
#should just resume the thread
def resume(self):
self.paused = False
# Notify so thread will wake after lock released
self.pause_cond.notify()
# Now release the lock
self.pause_cond.release()