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

[StructLayout(LayoutKind.Sequential)]
public struct TimedLock : IDisposable
{
    private readonly object target;
    private TimedLock(object o)
    {
        this.target = o;
    }

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

    public static TimedLock Lock(object o)
    {
        return Lock(o, TimeSpan.FromSeconds(5.0));
    }

    public static TimedLock Lock(object o, TimeSpan timeout)
    {
        TimedLock @lock = new TimedLock(o);
        if (!Monitor.TryEnter(o, timeout))
        {
            Console.WriteLine("Timeout Waiting for lock... @" + o.ToString());
        }
        return @lock;
    }
}