Mutex test c#

MutexTest.cs

using System;
using System.Diagnostics;
using System.Threading;

namespace Project
{
    class Program
    {
		private static readonly Mutex m = new ();
		private const int N = 1000;
		private static int x = 0;

		static void Main(string[] args)
        {
			Stopwatch sw = new Stopwatch();

			#region noMutex
			sw.Start();
			Thread incrTh = new (Incr);
			Thread decrTh = new (Decr);
			incrTh.Start();
			decrTh.Start();
			sw.Stop();
			Console.WriteLine($"NoMutex: {sw.ElapsedMilliseconds} (ms) | {sw.ElapsedTicks} (ticks)\n");
			sw.Reset();
			#endregion

			#region OurMutex
			sw.Start();
			Thread OurincrTh = new(OurIncr);
			Thread OurdecrTh = new(OurDecr);
			OurincrTh.Start();
			OurdecrTh.Start();
			sw.Stop();
			Console.WriteLine($"OurMutex: {sw.ElapsedMilliseconds} (ms) | {sw.ElapsedTicks} (ticks)\n");
			sw.Reset();
			#endregion

			#region EveryMutex
			sw.Start();
			Thread EveryincrTh = new(EveryIncr);
			Thread EverydecrTh = new(EveryDecr);
			EveryincrTh.Start();
			EverydecrTh.Start();
			sw.Stop();
			Console.WriteLine($"EveryMutex: {sw.ElapsedMilliseconds} (ms) | {sw.ElapsedTicks} (ticks)\n");
			sw.Reset();
			#endregion

		}

		#region noMutex Fn
		private static void Incr()
		{
			for (int i = 0; i < N; i++)
				x++;
		}

		private static void Decr()
		{
			for (int i = N; i > 0; i--)
				x--;
		}
        #endregion

        #region OurMutex Fn
        public static void OurIncr()
		{
            m.WaitOne();
			for (int i = 1; i < N; i++)
				x++;
			
			m.ReleaseMutex();
        }
		public static void OurDecr()
		{
			m.WaitOne();
			for (int i = N; i > 0; i--)
				x--;
			
			m.ReleaseMutex();
		}
		#endregion

		#region EveryMutex Fn
		public static void EveryIncr()
		{
			for (int i = 1; i < N; i++)
            {
				m.WaitOne();
				x++;
				m.ReleaseMutex();
			}	
		}
		public static void EveryDecr()
		{
			for (int i = N; i > 0; i--)
            {
				m.WaitOne();
				x--;
				m.ReleaseMutex();
			}	
		}
		#endregion
	}
}