AppDomain，卸载和ThreadAbortException

问题描述

我第一次尝试使用AppDomains，但发现自己有点迷茫.

I'm trying to work with AppDomains for the first time and I'm finding myself a bit lost.

这是我所做的:我有一个控制台应用程序，该应用程序实例化Bootstrapper类并调用Bootstrapper.Bootstrap.

Here is what I've done:I have a console app that instantiates a Bootstrapper class and calls Bootstrapper.Bootstrap.

该类看起来像这样:

    public class Bootstrapper : MarshalByRefObject
    {
        private static AppDomain SecondaryAppDomain;
        private Bootstrapper _secondaryDomainBootstrapper;
        public Robot CurrentlyRunningRobot;
        public Bootstrapper OwningBootstrapper;

        public Bootstrapper()
        {

        }

        public void Bootstrap()
        {
            InitializeSecondaryAppDomain();
            RunInSecondaryAppDomain();
        }

        private void DestroySecondaryAppDomain()
        {
            AppDomain.Unload(SecondaryAppDomain);
        }

        private static int initCount = 0;

        private static void InitializeSecondaryAppDomain()
        {
            initCount++;
            SecondaryAppDomain = AppDomain.CreateDomain("SecondaryAppDomain" + initCount);
        }

        private void RunInSecondaryAppDomain()
        {
            _secondaryDomainBootstrapper =
                (Bootstrapper)
                    SecondaryAppDomain.CreateInstanceAndUnwrap(Assembly.GetExecutingAssembly().FullName,
                        "myNamespace.Bootstrapper");
            _secondaryDomainBootstrapper.OwningBootstrapper = this;
            _secondaryDomainBootstrapper.Initialize(Args);
        }

        private void Initialize(string[] args)
        {
            //Do some stuff...
            //Start() returns Task<Robot>
            var robot = Initializer.Start();
            CurrentlyRunningRobot = robot.Result;
            CurrentlyRunningRobot.HardResetRequested += OnHardResetRequested;
            robot.Wait();
        }

        private void DoHardReset()
        {
            DestroySecondaryAppDomain();
            InitializeSecondaryAppDomain();
            RunInSecondaryAppDomain();
        }

        private void OnHardResetRequested(object sender, EventArgs e)
        {
            OwningBootstrapper.DoHardReset();
        }
    }

意图是在辅助域中运行任何内容，并要求终止它并重新启动.

The intention is that whatever is running in the Secondary domain and request that it be terminated and restarted.

但是，发生的是，当我调用DestroySecondaryAppDomain()(从默认的AppDomain中)时，出现了ThreadAbortExceptions.

What's happening, though, is that when I call DestroySecondaryAppDomain() (from within the default AppDomain) I wind up with ThreadAbortExceptions.

我一直在阅读大量文档，这似乎完全正常.我遇到的困难是为什么我似乎无法在默认的AppDomain中处理它.

I've been reading a bunch of docs and that seems totally normal. The thing that I'm having difficulty with is why I can't seem to deal with it in my default AppDomain.

卸载辅助AppDomain时(在DestroySecondaryAppDomain中)，我再也无法执行DoHardReset中的其余代码.我不了解什么(可能很简单)?

When the secondary AppDomain is unloaded (in DestroySecondaryAppDomain) I never get to execute the rest of the code in DoHardReset. What (probably simple) thing am I failing to understand?

推荐答案

长话短说，该AppDomain中仍在执行代码.必须完全停止它，然后才能成功将其正确卸载.

To make a long story short, there was still code executing in that AppDomain. It needed to be completely stopped before it can be successfully unloaded without error.

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