python-day33--进程间通信（IPC）

方式：队列（推荐使用）

一、基本情况

1.可以往队列里放任意类型的数据

2. 队列：先进先出

3.

q=Queue(3)        #可以设置队列中最多可以进入多少个值，也可以不设置
q.put('first')
q.put('second')
q.put('third')
# q.put('fourht')    #当设置最多进入3个值时，第四个值过来时就会卡住，只有当第一值     被取出去的时候，第四个值才会进入

print(q.get())
print(q.get())
print(q.get())
# print(q.get())   #当队列中有三个值，而想去取第四个值的时候，也会卡住，只有队列中进入了第四个值的时候才往下运行

4.生产者消费者模型

#生产者消费者模型1
# from multiprocessing import Process,Queue
# import time
# import random
# import os
# def consumer(q):
#     while True:
#         res=q.get()
#         if res is None:
#             break
#         time.sleep(random.randint(1,3))
#         print('33[45m%s 吃了 %s33[0m' % (os.getpid(), res))
# def producer(q):
#     for i in range(5):
#         time.sleep(2)
#         res='包子%s' %i
#         q.put(res)
#         print('33[44m%s 制造了 %s33[0m' %(os.getpid(),res))
#     q.put(None)
# if __name__ == '__main__':
#     q=Queue()
#     #生产者们：厨师们
#     p1=Process(target=producer,args=(q,))
#
#     #消费者们：吃货们
#     p2=Process(target=consumer,args=(q,))
#
#     p1.start()
#     p2.start()
#     p1.join()
#     p2.join()
#     print('主')


# #生产者消费者模型2
# from multiprocessing import Process,Queue
# import time
# import random
# import os
# def consumer(q):
#     while True:
#         res=q.get()
#         if res is None:break
#         time.sleep(random.randint(1,3))
#         print('33[45m%s 吃了 %s33[0m' % (os.getpid(), res))
#
# def product_baozi(q):
#     for i in range(3):
#         time.sleep(2)
#         res='包子%s' %i
#         q.put(res)
#         print('33[44m%s 制造了 %s33[0m' %(os.getpid(),res))
#
#
# def product_gutou(q):
#     for i in range(3):
#         time.sleep(2)
#         res='骨头%s' %i
#         q.put(res)
#         print('33[44m%s 制造了 %s33[0m' %(os.getpid(),res))
#
#
# def product_ganshui(q):
#     for i in range(3):
#         time.sleep(2)
#         res='泔水%s' %i
#         q.put(res)
#         print('33[44m%s 制造了 %s33[0m' %(os.getpid(),res))
# if __name__ == '__main__':
#     q=Queue()
#     #生产者们：厨师们
#     p1=Process(target=product_baozi,args=(q,))
#     p2=Process(target=product_gutou,args=(q,))
#     p3=Process(target=product_ganshui,args=(q,))
#
#     #消费者们：吃货们
#     p4=Process(target=consumer,args=(q,))
#     p5=Process(target=consumer,args=(q,))
#
#     # p_l=[p1,p2,p3,p4,p5]
#     # for p in p_l:
#     #     p.start()
#     #
#     # for p in p_l:
#     #     p.join()
#
#
#     p1.start()
#     p2.start()
#     p3.start()
#     p4.start()
#     p5.start()
#
#
#     p1.join()
#     p2.join()
#     p3.join()
#     q.put(None)
#     q.put(None)
#     p4.join()
#     p5.join()
#
#     print('主')




# #生产者消费者模型3
# from multiprocessing import Process,JoinableQueue
# import time
# import random
# import os
# def consumer(q):
#     while True:
#         res=q.get()
#         time.sleep(random.randint(1,3))
#         print('33[45m%s 吃了 %s33[0m' % (os.getpid(), res))
#         q.task_done()
#
# def product_baozi(q):
#     for i in range(5):
#         time.sleep(2)
#         res='包子%s' %i
#         q.put(res)
#         print('33[44m%s 制造了 %s33[0m' %(os.getpid(),res))
#     q.join()
#
# if __name__ == '__main__':
#     q=JoinableQueue()
#     #生产者们：厨师们
#     p1=Process(target=product_baozi,args=(q,))
#
#     #消费者们：吃货们
#     p4=Process(target=consumer,args=(q,))
#     p4.daemon=True
#
#     p1.start()
#     p4.start()
#
#     p1.join()
#     print('主')
#     #p2结束了




#生产者消费者模型4
from multiprocessing import Process,JoinableQueue
import time
import random
import os
def consumer(q):
    while True:
        res=q.get()
        time.sleep(random.randint(1,3))
        print('33[45m%s 吃了 %s33[0m' % (os.getpid(), res))
        q.task_done()

def product_baozi(q):
    for i in range(3):
        time.sleep(2)
        res='包子%s' %i
        q.put(res)
        print('33[44m%s 制造了 %s33[0m' %(os.getpid(),res))
    q.join()

def product_gutou(q):
    for i in range(3):
        time.sleep(2)
        res='骨头%s' %i
        q.put(res)
        print('33[44m%s 制造了 %s33[0m' %(os.getpid(),res))
    q.join()

def product_ganshui(q):
    for i in range(3):
        time.sleep(2)
        res='泔水%s' %i
        q.put(res)
        print('33[44m%s 制造了 %s33[0m' %(os.getpid(),res))
    q.join()
if __name__ == '__main__':
    q=JoinableQueue()
    #生产者们：厨师们
    p1=Process(target=product_baozi,args=(q,))
    p2=Process(target=product_gutou,args=(q,))
    p3=Process(target=product_ganshui,args=(q,))

    #消费者们：吃货们
    p4=Process(target=consumer,args=(q,))
    p5=Process(target=consumer,args=(q,))
    p4.daemon=True
    p5.daemon=True

    p_l=[p1,p2,p3,p4,p5]
    for p in p_l:
        p.start()

    p1.join()
    p2.join()
    p3.join()

    print('主')