进程间的通信小例子

进程间的通信

import multiprocessing
import time

def write_quene(quene):
    for i in range(10):
        if quene.full():
            print("quene is full")
            break
        quene.put(i)
        print("input  successfully:",i)

def read_quene(quene):
    while True:
        if quene.empty():
            print("The quene is empty,can not output")
            break

        value = quene.get()
        print(value)

if __name__ == '__main__':
    quene = multiprocessing.Queue()
    write_process  = multiprocessing.Process(target=write_quene,args=(quene,))
    read_process  = multiprocessing.Process(target=read_quene,args=(quene,))

    write_process.start()
    # 由于两个进程同时进行读入和取出会造成预取之外的效果，因此用join先执行一个进程
    write_process.join()
    read_process.start()