Simple C# Code Timer by JeffreyZhao

CodeTimer.cs

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

public static class CodeTimer
{
 	public static void Initialize()
	{
		Process.GetCurrentProcess().PriorityClass = ProcessPriorityClass.High;
		Thread.CurrentThread.Priority = ThreadPriority.Highest;
		Time("", 1, () => { });
	}

	public static void Time(string name, int iteration, Action action)
	{
		if (String.IsNullOrEmpty(name)) return;

		// 1.
		ConsoleColor currentForeColor = Console.ForegroundColor;
		Console.ForegroundColor = ConsoleColor.Yellow;
		Console.WriteLine(name);

		// 2.
		GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced);
		int[] gcCounts = new int[GC.MaxGeneration + 1];
		for (int i = 0; i <= GC.MaxGeneration; i++)
		{
			gcCounts[i] = GC.CollectionCount(i);
		}

		// 3.
		Stopwatch watch = new Stopwatch();
		watch.Start();
		ulong cycleCount = GetCycleCount();
		for (int i = 0; i < iteration; i++) action();
		ulong cpuCycles = GetCycleCount() - cycleCount;
		watch.Stop();

		// 4.
		Console.ForegroundColor = currentForeColor;
		Console.WriteLine("\tTime Elapsed:\t" + watch.ElapsedMilliseconds.ToString("N0") + "ms");
		Console.WriteLine("\tCPU Cycles:\t" + cpuCycles.ToString("N0"));

		// 5.
		for (int i = 0; i <= GC.MaxGeneration; i++)
		{
			int count = GC.CollectionCount(i) - gcCounts[i];
			Console.WriteLine("\tGen " + i + ": \t\t" + count);
		}

		Console.WriteLine();
	}

	private static ulong GetCycleCount()
	{
		ulong cycleCount = 0;
		QueryThreadCycleTime(GetCurrentThread(), ref cycleCount);
		return cycleCount;
	}

	[DllImport("kernel32.dll")]
	[return: MarshalAs(UnmanagedType.Bool)]
	static extern bool QueryThreadCycleTime(IntPtr threadHandle, ref ulong cycleTime);

	[DllImport("kernel32.dll")]
	static extern IntPtr GetCurrentThread();
}