mutex

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

namespace ConsoleApp22
{
    class Program
    {
        [MethodImpl (MethodImplOptions.Synchronized)]
        public void DoSomething()
        {

        }
        static void Main(string[] args)
        {
            MyCounter c = new MyCounter();
            IncThread myt1 = new IncThread(c);
            DecThread myt2 = new DecThread(c);
            myt1.th.Join();
            myt2.th.Join();
            Console.Read();
        }
    }
    class MyCounter
    {
        private int count = 0;
        private Mutex MuTexLock;
        public MyCounter()
        {
            MuTexLock = new Mutex();
        }

        public Mutex getMutex()
        {
            return MuTexLock;
        }

        public int getCount()
        {
            return count;
        }

        public void setCount(int c)
        {
            count = c;
        }

    }
    class IncThread
    {
        public Thread th;
        private MyCounter c;
        public IncThread(MyCounter c)
        {
            this.c = c;
            th = new Thread(this.Go);
            th.Start();
        }
        void Go()
        {
            Console.WriteLine("IncThread is waiting for the mutex.");
            c.getMutex().WaitOne();
            Console.WriteLine("IncThread acquires the mutex.");
            int num = 10;
            do
            {
                Thread.Sleep(50);
                c.setCount(c.getCount()+1);
                Console.WriteLine("In IncThread, MyCounter.count is " + c.getCount());
                num--;
            } while (num > 0);
            Console.WriteLine("IncThread releases the mutex.");
            c.getMutex().ReleaseMutex();
        }
    }
    class DecThread
    {
        public Thread th;
        private MyCounter c;
        public DecThread(MyCounter c)
        {
            this.c = c;
            th = new Thread(this.Go);
            th.Start();
        }
       void Go()
       {
            Console.WriteLine("DecThread is waiting for the mutex.");
            c.getMutex().WaitOne();
            Console.WriteLine("DecThread acquires the mutex.");
            int num = 10;
            do
            {
                Thread.Sleep(50);
                c.setCount(c.getCount() - 1);
                Console.WriteLine("In DecThread, MyCounter.count is " + c.getCount());
                num--;
            } while (num > 0);
            Console.WriteLine("DecThread releases the mutex.");
            c.getMutex().ReleaseMutex();
       }
    }
}