103-python-进程-管道( 生产者消费者模型例子 )

import time
import random
from multiprocessing import Process,Pipe,Lock


def producer(con,pro,name,food):
    con.close()
    for i in range(8):
        time.sleep(random.random())
        msg = '%s 生产的%s %s个'%(name,food,i)
        pro.send(msg)
    pro.close()

def consumer(con,pro,name,lock):
    pro .close()
    while True:
        try:
            # lock.acquire()
            ret = con.recv()
            # lock.release()
            print('%s 消费了 %s' % (name, ret))
            time.sleep(random.random())
        except EOFError:
            con.close()
            break


if __name__ == '__main__':
    lock = Lock()
    con,pro = Pipe()
    p1 = Process(target=producer,args=(con,pro,'goblin','app'))
    p1.start()
    c1 = Process(target=consumer,args=(con,pro,'monster',lock))
    c1.start()
    c2 = Process(target=consumer, args=(con, pro, 'pig',lock))
    c2.start()
    con.close()
    pro.close()