using System;

using System.Threading;

​

public class Program

{

    public static void Main()

    {

        RunTest();

        System.Runtime.Loader.AssemblyLoadContext.Default.Unloading += (arg) => { OnUnloading(); };

    }

    private static void OnUnloading()

    {

        RunTest();

    }

​

    private static void RunTest()

    {

        var t1 = new System.Threading.Thread(RunThread);

        Console.WriteLine("Starting..");

        t1.Start();

        Console.WriteLine("Sleeping 1200..expect RunThread to end before join");

        Thread.Sleep(1200);

        Console.WriteLine("Join(100)..expect success");

        if (t1.Join(100))

        {

            Console.WriteLine("Join(100) success!");

        }

        else

        {

            Console.WriteLine("Join(100) failed");

        }

        t1.Join();

        Console.WriteLine("Done..");

    }

    public static void RunThread()

    {

        Console.WriteLine("Enter RunThread");

        Thread.Sleep(1000);

        Console.WriteLine("Leaving RunThread");

    }

}