Visual Studio Performance Analysis in 10 minutes

using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Threading;

namespace CalulateHangTime
{
    [Flags]
    public enum SendMessageTimeoutFlags : uint
    {
        SMTO_NORMAL = 0x0000,
        SMTO_BLOCK = 0x0001,
        SMTO_ABORTIFHUNG = 0x0002,
        SMTO_NOTIMEOUTIFNOTHUNG = 0x0008
    }

    public static class ExternalMethods
    {
        [DllImport("user32.dll", SetLastError = true)]
        public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

        [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
        public static extern IntPtr SendMessageTimeout(IntPtr hWnd, uint Msg,
           UIntPtr wParam, IntPtr lParam, SendMessageTimeoutFlags fuFlags,
           uint uTimeout, out UIntPtr lpdwResult);
    }

    class Program
    {
        static readonly uint WAIT_MILLISECONDS = 2;
        static readonly int SLEEP_MILLISECONDS = 1000;

        static void Main(string[] args)
        {
            long seconds = 0;
            Stopwatch stopWatch = new Stopwatch();
            stopWatch.Start();
            while (true)
            {
                IntPtr hWnd = ExternalMethods.FindWindow("wndclass_desked_gsk", null);
                if (hWnd == IntPtr.Zero)
                    throw new InvalidOperationException("Handle to window could not be found");


                UIntPtr result;
                IntPtr success = ExternalMethods.SendMessageTimeout(hWnd, 0, UIntPtr.Zero, IntPtr.Zero, 
				SendMessageTimeoutFlags.SMTO_ABORTIFHUNG, WAIT_MILLISECONDS, out result);
                
                if (success == IntPtr.Zero)
                {
                    seconds += SLEEP_MILLISECONDS / 1000;

                    Console.WriteLine("Visual Studio is hung. {0}/{1} seconds wasted", seconds, stopWatch.Elapsed.TotalSeconds);
                }
                else
                {
                    Console.WriteLine("Visual Studio is running fine.");
                }

                Thread.Sleep(SLEEP_MILLISECONDS);
            }
        }
    }
}