【Python@Thread】queue模块-生产者消费者问题

python通过queue模块来提供线程间的通信机制，从而可以让线程分项数据。

个人感觉queue就是管程的概念

一个生产者消费者问题

 from random import randint
 from threading import Thread
 from queue import Queue
 from time import sleep

 def writeq(queue):
     print('starting put queue...')
     queue.put('hahaha', 1)　　　　　　　　　　#1表示在有可用空间前，阻塞
     print('size now', queue.qsize())

 def readq(queue):
     print('starting get queue...')
     val = queue.get(1)　　　　　　　　　　　　　　#1表示在有可用元素前阻塞
     print('consume from queu...size now', queue.qsize())

 def writer(queue, loops):
     for i in range(loops):
         writeq(queue)
         sleep(randint(1, 3))

 def reader(queue, loops):
     for i in range(loops):
         readq(queue)
         sleep(randint(2, 5))

 funcs = [writer, reader]

 def main():
     nloops = randint(2, 5)
     q = Queue(32)

     threads = []
     for i in range(len(funcs)):
         t = Thread(target=funcs[i], args=(q, nloops))
         threads.append(t)

     for i in range(len(funcs)):
         threads[i].start()

     for i in range(len(funcs)):
         threads[i].join()

     print('all done')

 if __name__ == '__main__':
     main()

输出结果：