using System;

using System.Threading;

using System.Collections.Generic;

using System.Collections.Concurrent;

using System.Threading.Tasks;

​

public class Program

{

    public static ConcurrentDictionary<string, string> stuff = new ConcurrentDictionary<string, string>();

    public static HashSet<string> strCol = new HashSet<string>();

    public static readonly int loopCount = 10000000;

    public static ConcurrentDictionary<int, bool> isFlighted = new ConcurrentDictionary<int, bool>();

    public static void Main()

    {

        isFlighted.TryAdd(1, false);

        List<Task> allTasks = new List<Task>();

​

        for (int i = 0; i < 3; i++)

        {

            int id = i;

            allTasks.Add ( Task.Factory.StartNew(() =>

            {

                Console.WriteLine("ADD ELE");

                for (int j = 0; j < 200; j++)

                {

                    strCol.Add(j.ToString());

                }

                Console.WriteLine("ADD ELE DONE" + strCol.Count);

            }) );

        }

        Task.WaitAll(allTasks.ToArray());

​

​

        Console.WriteLine("DONE");

    }

​

}