(10)Manager数据共享

Manager dict list 能够实现进程之间的数据共享,但是必须上锁来确保数据的准确性,

队列则可以实现进程之间数据通信

from multiprocessing import Process , Manager ,Lock

def work(d,lock):

# 自动上锁和解锁[简写]

with lock:

d["count"] - = 1

if __name__ == "__main__":

lock = Lock()

m = Manager()

dic = m.dict({"count":100})

lst = []

for i in range(100):

p =Process(target=work,args = (dic,lock))

lst.append(p)

p.start()

# 等待每一个进程执行完毕

for p in lst:

p.join()

print(dic)