using System;
using System.Collections.Concurrent;
using System.Threading;

namespace ConqueueTest
{
    class MainClass
    {

        private static ConcurrentQueue<Int32> queue = new ConcurrentQueue<Int32> ();

        public static void Main (string[] args)
        {
            Thread checker = new Thread (new ThreadStart (CheckQueue));
            checker.IsBackground = true;
            checker.Start ();
            int val = 0;
            while (true) {
                queue.Enqueue (1);
                while (!queue.TryDequeue(out val)) {
                }
            }
        }

        public static void CheckQueue ()
        {
            int val = 0;
            while (true) {
                queue.TryPeek (out val);
            }
        }

    }
}