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from multiprocessing import Lock,Pipe,Process
def producer(con,pro,name,food):
con.close()
for i in range(100):
f = '%s生产%s%s'%(name,food,i)
print(f)
pro.send(f)
pro.send(None)
pro.send(None)
pro.send(None)
pro.close()
def consumer(con,pro,name,lock):
pro.close()
while True:
lock.acquire()
food = con.recv()
lock.release()
if food is None:
con.close()
break
print('%s吃了%s' % (name, food))
if __name__ == '__main__':
con,pro = Pipe()
lock= Lock()
p = Process(target=producer,args=(con,pro,'egon','泔水'))
c1 = Process(target=consumer, args=(con, pro, 'alex',lock))
c2 = Process(target=consumer, args=(con, pro, 'bossjin',lock))
c3 = Process(target=consumer, args=(con, pro, 'wusir',lock))
c1.start()
c2.start()
c3.start()
p.start()
con.close()
pro.close()
from multiprocessing import Process,Pipe,Lock
def consumer(produce, consume,name,lock):
produce.close()
while True:
lock.acquire()
baozi=consume.recv()
lock.release()
if baozi:
print('%s 收到包子:%s' %(name,baozi))
else:
consume.close()
break
def producer(produce, consume,n):
consume.close()
for i in range(n):
produce.send(i)
produce.send(None)
produce.send(None)
produce.close()
if __name__ == '__main__':
produce,consume=Pipe()
lock = Lock()
c1=Process(target=consumer,args=(produce,consume,'c1',lock))
c2=Process(target=consumer,args=(produce,consume,'c2',lock))
p1=Process(target=producer,args=(produce,consume,30))
c1.start()
c2.start()
p1.start()
produce.close()
consume.close()
pipe 数据不安全性
IPC
加锁来控制操作管道的行为 来避免进程之间争抢数据造成的数据不安全现象
队列 进程之间数据安全的
管道 + 锁