• python多线程threading.Lock锁用法实例


    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

    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。

    #!/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
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  • 原文地址:https://www.cnblogs.com/blogofwyl/p/4609502.html
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