Python高阶--Condition

Condition条件触发

import threading
import time

class Producer(threading.Thread):
# 生产者函数
def run(self):
global count
while True:
if con.acquire():
# 当count 小于等于1000 的时候进行生产
if count > 1000:
con.wait()
else:
count = count + 100
msg = self.name + ' produce 100, count=' + str(count)
print(msg)
# 完成生成后唤醒waiting状态的线程，
# 从waiting池中挑选一个线程，通知其调用acquire方法尝试取到锁
con.notify()
con.release()
time.sleep(1)

class Consumer(threading.Thread):
# 消费者函数
def run(self):
global count
while True:
# 当count 大于等于100的时候进行消费
if con.acquire():
if count < 100:
con.wait()

            else:
                count = count - 3
                msg = self.name + ' consume 3, count=' + str(count)
                print(msg)
                con.notify()
                # 完成生成后唤醒waiting状态的线程，
                # 从waiting池中挑选一个线程，通知其调用acquire方法尝试取到锁
            con.release()
            time.sleep(1)

def test():
for i in range(2):
p = Producer()
p.start()
for i in range(5):
c = Consumer()
c.start()

if name == 'main':
count = 500
con = threading.Condition()
test()