python 线程锁的例子线程同步————1

#线程锁的简单例子

 import threading

 import time

 x=0

 lock=threading.RLock()

 class myThread(threading.Thread):

     def run(self):

         global  x

         lock.acquire()

         for i in range(3):

             x+=5

         print(x)

         lock.release()




 def main():

     thr=[]


     for i in range(6):

         thr.append(myThread())

     for item in thr:

         item.start()

 if __name__=="__main__":

     main()
输出:
15
 30
 45
 60
 75
 90
#线程锁的简单例子
 import threading
 import time

 class myThread(threading.Thread):
     def run(self):
         global  x

         for i in range(3):
             x+=5
         time.sleep(1)
         print(x)



 x=0
 lock=threading.RLock()
 def main():
     thr=[]

     for i in range(5):
         thr.append(myThread())
     for item in thr:
         item.start()
 if __name__=="__main__":
     main()

 输出:75
 75
 75
 75
 75