designPatternGuru/DesignPatternGuru/Singleton/ThreadSageSingleton/Client.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Singleton.ThreadSageSingleton
{
	internal class Client
	{
		public static void DoTest()
		{
			Console.WriteLine(
				"Thread safe Singleton",
				"If you see the same value, then both instances are same.",
				"If you see differnt values, then 2 differnect instances are created.",
				"RESULT: ");

			Thread process1 = new Thread(() =>
			{
				TestSingleton("FOO");
			});
			Thread process2 = new Thread(() =>
			{
				TestSingleton("BAR");
			});

			process1.Start();
			process2.Start();

			process1.Join();
			process2.Join();
		}

		public static void TestSingleton(string value)
		{
			Singleton singleton = Singleton.GetInstance(value);
			Console.WriteLine(singleton.Value);
		}
	}
}