using System;

using System.Collections.Generic;

using System.Threading.Tasks;

using System.Threading;

​

public class Program

{

    public static void Main()

    {

        List<int> list = new();

        Task.Run(() => addItems(list));

        Task.Run(() => removeItems(list));

​

        Console.WriteLine("Started. Press <return> to exit");

        Console.ReadLine();

    }

​

    static void addItems(List<int> list)

    {

        for (int i = 0; i < 100_000; ++i)

        {

            list.Add(i);

        }

​

        Volatile.Write(ref finished, true);

​

        Console.WriteLine("Finished writing items");

    }

​

    static void removeItems(List<int> list)

    {

        List<int> result = new();

​

        while (true)

        {

            if (list.Count > 0)

            {

                result.Add(list[0]);

                list.RemoveAt(0);

            }

            else

            {

                Volatile.Read(ref finished);

​

                if (finished)

                    break;

            }

        }

​

        Console.WriteLine($"Finished reading {result.Count} items");

    }

​

    static bool finished;

}

​