防止服务的多个实例 - 最好的方法？ [英] Prevent multiple instance of a service - best approach?

问题描述

那么，你认为是为了防止同时运行一个C＃Windows服务的多线程的最佳方法（该服务使用的是定时与 OnElapsed 事件）？

So what do you think is the best way to prevent multiple threads of a C# Windows service running simultaneously (the service is using a timer with the OnElapsed event) ?

使用锁（）或互斥？

我似乎无法把握互斥的概念 ，但使用锁（）似乎我的情况很好地工作。

I can't seem to grasp the concept of the mutex, but using lock() seems to work fine for my case.

我应该花时间学习如何使用互斥反正？

Should I spend the time learning how to use the mutex anyways?

推荐答案

请您定时以一杆在经过的事件处理程序，并重新初始化它。例如，如果你使用 System.Timers.Timer ，你会初始化它是这样的：

Make your timer a one-shot, and re-initialize it in the elapsed event handler. For example, if you're using System.Timers.Timer, you'd initialize it like this:

myTimer.Elapsed = timer1Elapsed;
myTimer.Interval = 1000; // every second
myTimer.AutoReset = false; // makes it fire only once
myTimer.Enabled = true;

和你经过的事件处理程序：

And your elapsed event handler:

void timerElapsed(object source, ElapsedEventArgs e)
{
    // do whatever needs to be done
    myTimer.Start(); // re-enables the timer
}

这个的缺点是计时器没有按T火每隔一秒。相反，它激发了最后一跳的处理完成后一秒。

The drawback to this is that the timer doesn't fire on one second intervals. Rather, it fires one second after the last tick's processing finishes.

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