在反編譯photon原始碼的時候發現的，感到很有趣，以下是反編譯並補充完整的程式碼。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;

namespace ExitGames.Threading
{
    [StructLayout(LayoutKind.Sequential)]
    public struct Lock : IDisposable
    {
        private readonly object lockObject;
        private Lock(object obj)
        {
            this.lockObject = obj;
            Monitor.TryEnter(obj);
        }

        private Lock(object obj, int timeout)
        {
            this.lockObject = obj;
            if (!Monitor.TryEnter(obj, timeout))
            {
                throw new LockTimeoutException();
            }
        }

        public static IDisposable Enter(object syncObject)
        {
            return new Lock(syncObject);
        }

        public static IDisposable TryEnter(object syncObject, int millisecondsTimeout)
        {
            return new Lock(syncObject, millisecondsTimeout);
        }

        public void Dispose()
        {
            Monitor.Exit(this.lockObject);
        }
    }

}
 

然後，去谷歌找啊找,找到這兩篇文章。2004年的老外寫的，嗚呼一下，現在才發現，幸好幸好。標題不知怎樣寫才好。

http://www.interact-sw.co.uk/iangblog/2004/03/23/locking

http://blogs.msdn.com/b/ericgu/archive/2004/03/24/95743.aspx