你对这个锁的问题？ [英] What is problem on this lock?

问题描述

高度有这锁一个问题，但我不明白那是什么。我有强烈的怀疑下面的例子不锁不够好。那么有什么方法可以问题？

 类的例子
{
    对象更衣室=新的对象（）;
    无效的start（）
    {
        的for（int i = 0; I＆LT; 1000;我++）
        {
            （新主题（dostuff））启动（）;
        }
    }
    无效dostuff（）
    {
        锁（更衣室）
        {
            //做一点事
        }
    }
}
 

解决方案

您code创建1000线程。这是极其昂贵的，需要超过1 GB的内存。

和那么所有这些线程争夺一个锁，基本上serialzing（DE线程）的整个操作。

但是，你的锁定的正常工作，没有什么不对劲的地方。只是，当您运行此的应用程序的它可能看起来像你的电脑崩溃。

---

另外请注意，您要保护的对象应与1对1的更衣室对象。

但对于一个更好的答案，你必须张贴code就是有点更加完整，也许更接近真实的东西。

Highly there is a problem in this lock but i couldn't understand what is that. I have strong suspicious that below example doesn't lock enough well. So what can be problem ?

class example
{
    object locker = new object();
    void start()
    {
        for (int i = 0; i < 1000; i++)
        {
            (new Thread(dostuff)).Start();
        }
    }
    void dostuff()
    {
        lock (locker)
        {
            //dosomething
        }
    }
}

解决方案

Your code creates 1000 Threads. That is enormously expensive, requiring over 1 GB of memory.

And then all those threads compete for a single lock, essentially serialzing (de-threading) the whole operation.

But your lock works fine, nothing wrong there. It's just that when you run this application it might look like your PC is crashing.

---

Also note that the object you are trying to protect should be tied 1-on-1 with the locker object.

But for a better answer you'll have to post code that is a little more complete and maybe closer to the real thing.

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