gistfile1.txt

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication5
{
    interface IA
    {
        void Method();
    }

    struct S : IA
    {
        public void Method()
        {
            Program.counter = 1;
        }
    }

    struct SG
    {
        public void Test<T>(ref T t) where T : IA
        {
            t.Method();
        }
    }

    class Program
    {
        public static int counter;

        static void Main(string[] args)
        {
            S s;
            var sw = new Stopwatch();
            sw.Start();
            for (int i = 0; i < 100000000; ++i)
            {
                s = new S();
                new SG().Test(ref s);
            }
            sw.Stop();
            Console.WriteLine(sw.ElapsedMilliseconds);
            Console.WriteLine(Program.counter);
            return;
        }
    }
}