问题描述

我想为我的控制台应用程序安全退出，该应用程序将使用单声道在 linux 上运行，但我找不到解决方案来检测是否向其发送了信号或用户按下了 ctrl+c.

I wanted to make a safe exit for my console application that will be running on linux using mono but I can't find a solution to detect wether a signal was sent to it or the user pressed ctrl+c.

在 Windows 上，有一个内核函数 SetConsoleCtrlHandler 可以完成这项工作，但在单声道上不起作用.

On windows there is the kernel function SetConsoleCtrlHandler which does the job but that doesnt work on mono.

如何在我的控制台应用程序上获得关闭事件以安全退出它?

How do I get a closing event on my console application to safe exit it ?

推荐答案

你需要使用 Mono.UnixSignal，Jonathan Pryor 发布了一个很好的示例:http://www.jprl.com/Blog/archive/development/mono/2008/Feb-08.html

You need to use Mono.UnixSignal, there's a good sample posted by Jonathan Pryor : http://www.jprl.com/Blog/archive/development/mono/2008/Feb-08.html

Mono 页面上还有一个较短的示例:FAQ/技术/操作系统问题/信号处理:

There's also a shorter example on Mono page: FAQ / Technical / Operating System Questions / Signal Handling:

// Catch SIGINT and SIGUSR1
UnixSignal[] signals = new UnixSignal [] {
    new UnixSignal (Mono.Unix.Native.Signum.SIGINT),
    new UnixSignal (Mono.Unix.Native.Signum.SIGUSR1),
};

Thread signal_thread = new Thread (delegate () {
    while (true) {
        // Wait for a signal to be delivered
        int index = UnixSignal.WaitAny (signals, -1);

        Mono.Unix.Native.Signum signal = signals [index].Signum;

        // Notify the main thread that a signal was received,
        // you can use things like:
        //    Application.Invoke () for Gtk#
        //    Control.Invoke on Windows.Forms
        //    Write to a pipe created with UnixPipes for server apps.
        //    Use an AutoResetEvent

        // For example, this works with Gtk#    
        Application.Invoke (delegate () { ReceivedSignal (signal); });
    }});

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