using System;

using System.Threading;

using System.Threading.Tasks;

using System.Runtime.CompilerServices;

public class Program

{

    private static AsyncLocal<bool> CanLogPiiVal = new AsyncLocal<bool>();

    private static AsyncLocal<StrongBox<bool>> CanLogPiiRef = new AsyncLocal<StrongBox<bool>>();

    public static void Main()

    {

        CanLogPiiVal.Value = true;

        CanLogPiiRef.Value = new StrongBox<bool>(true);

        Console.WriteLine("Main val: " + CanLogPiiVal.Value);

        Console.WriteLine("Main ref: " + CanLogPiiRef.Value.Value);

        Task.Run(() => Outer()).Wait();

    }

    private static async Task Outer()

    {

        Console.WriteLine("Outer 1 val: " + CanLogPiiVal.Value);

        Console.WriteLine("Outer 1 ref: " + CanLogPiiRef.Value.Value);

        await Inner().ConfigureAwait(false);        

        Console.WriteLine("Outer 2 val: " + CanLogPiiVal.Value);

        Console.WriteLine("Outer 2 ref: " + CanLogPiiRef.Value.Value);

    }

    private static async Task Inner()

    {

        Console.WriteLine("Inner 1 val: " + CanLogPiiVal.Value);

        Console.WriteLine("Inner 1 ref: " + CanLogPiiRef.Value.Value);

        CanLogPiiVal.Value = false;

        CanLogPiiRef.Value.Value = false;

        Console.WriteLine("Inner 2 val: " + CanLogPiiVal.Value);

        Console.WriteLine("Inner 2 ref: " + CanLogPiiRef.Value.Value);

    }

}