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python多线程threading.Lock锁用法实例

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WBOYOriginal
2016-06-10 15:19:151325browse

本文实例讲述了python多线程threading.Lock锁的用法实例,分享给大家供大家参考。具体分析如下:

python的锁可以独立提取出来

复制代码 代码如下:
mutex = threading.Lock()
#锁的使用
#创建锁
mutex = threading.Lock()
#锁定
mutex.acquire([timeout])
#释放
mutex.release()
锁定方法acquire可以有一个超时时间的可选参数timeout。如果设定了timeout,则在超时后通过返回值可以判断是否得到了锁,从而可以进行一些其他的处理。

复制代码 代码如下:
#!/usr/bin/env python
#coding=utf-8
import threading
import time
 
class MyThread(threading.Thread):
    def run(self):
        global num
        time.sleep(1)
 
        if mutex.acquire(1): 
            num = num+1
            msg = self.name+' set num to '+str(num)
            print msg
            mutex.release()
num = 0
mutex = threading.Lock()
def test():
    for i in range(5):
        t = MyThread()
        t.start()
if __name__ == '__main__':
    test()
Thread-1 set num to 1
Thread-3 set num to 2
Thread-4 set num to 3
Thread-5 set num to 4
Thread-2 set num to 5

希望本文所述对大家的Python程序设计有所帮助。

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