8.Python网络编程_多线程死锁

 1 import threading
 2 import time
 3 
 4 class MyThread1(threading.Thread):
 5     def run(self):
 6         #对mutexA上锁
 7         mutexA.acquire()
 8         
 9         #mutexA上锁，延时1秒，等待另外那个线程，把mutexB上锁
10         print(self.name+‘----do1---up----‘)
11         time.sleep(1)
12         
13         #此时会堵塞，因为这个mutexA已经被另外的线程抢先上锁了
14         mutexB.acquire()
15         print(self.name+‘----do2---down----‘)
16         mutexB.release()
17         
18         #对mutexA解锁
19         mutexA.release()
20         
21 class MyThread2(threading.Thread):
22     def run(self):
23         #对mutexA上锁
24         mutexB.acquire()
25         
26         #mutexA上锁，延时1秒，等待另外那个线程，把mutexB上锁
27         print(self.name+‘----do1---up----‘)
28         time.sleep(1)
29         
30         #此时会堵塞，因为这个mutexA已经被另外的线程抢先上锁了
31         mutexA.acquire()
32         print(self.name+‘----do2---down----‘)
33         mutexA.release()
34         
35         #对mutexB解锁
36         mutexB.release()
37         
38 
39 if __name__==‘__main__‘:
40     mutexA=threading.Lock()
41     mutexB=threading.Lock()
42     t1=MyThread1()
43     t2=MyThread2()
44     t1.start()
45     t2.start()
46