using System;

using System.Threading;

​

namespace MutexLocks

{

    public class Program

    {

        // Mutex object for program-wide access

        public static Mutex mutex { get; set; }

        public static bool InitialOwnership { get; set; }

        public static void Main(string[] args)

        {

            // Set up a few things

            var threadCount = 5;

            InitialOwnership = false;

            mutex = new Mutex(InitialOwnership); // If true, sets the ownership to our main thread, so, see below.

​

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

            {

                // Create and run 5 threads -- threadCount based.

                var thread = new Thread(new ThreadStart(RunTask));

                thread.Name = "Thread #" + (i + 1);

​

                // Run the thread

                thread.Start();

            }

            // Caller thread has the ownership, so we need to release it from main thread.

            if(InitialOwnership)

            {

                mutex.ReleaseMutex();

            }

        }

​

        static void RunTask()

        {

            // Run the background process.

            ThreadProcess();

        }

​

        static void ThreadProcess()

        {

            // Accessing the Mutex

            Console.WriteLine("{0} thread is trying to access the Mutex.", Thread.CurrentThread.Name);

​

            // This wait one comes from Mutex class, it makes every thread wait until the mutex gets released once. 

            mutex.WaitOne();

​

            Console.WriteLine("{0} thread acquired the mutex, and is now processing.", Thread.CurrentThread.Name);

​

            Thread.Sleep(3000);

​

            Console.WriteLine("{0} thread is now exiting and freeing the mutex.", Thread.CurrentThread.Name);

​

            // This signals other classes to enter and work. 

            mutex.ReleaseMutex();

            Console.WriteLine("{0} thread has freed the mutex.", Thread.CurrentThread.Name);

        }

    }

}

​