gistfile1.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Runtime.CompilerServices;
using Castle.DynamicProxy;

namespace ConsoleApplication7
{
	internal class Program
	{
		private static void Main(string[] args)
		{
			var generator = new ProxyGenerator();
			var exceptions = new HashSet<Type>
			                 	{
			                 		typeof (TypedReference),
			                 		typeof (ArgIterator),
			                 		typeof (RuntimeArgumentHandle),
			                 		typeof (void)
			                 	};
			var types =
				typeof (object).Assembly.GetExportedTypes()
					.Where(t => t.IsGenericTypeDefinition == false && exceptions.Contains(t) == false)
					.ToArray();
			Console.WriteLine("Experimenting with {0} types", types.Length);

			var sw = Stopwatch.StartNew();
			for (var i = 0; i < types.Length; i++)
			{
				var type = MakeGenericFoo(types[i]);
				var instance = Instantiate(type, generator);
			}
			Console.WriteLine("Done: {0}", sw.Elapsed);
		}

		[MethodImpl(MethodImplOptions.NoInlining)]
		private static void Invoke(IList instance)
		{
			instance.Clear();
		}

		[MethodImpl(MethodImplOptions.NoInlining)]
		private static object Instantiate(Type type, ProxyGenerator generator)
		{
			return generator.CreateInterfaceProxyWithoutTarget(type);
		}


		[MethodImpl(MethodImplOptions.NoInlining)]
		private static Type MakeGenericFoo(Type type)
		{
			return typeof (IFoo<>).MakeGenericType(type);
		}
	}

	public interface IFoo<T>
	{
	}
}