BitSharper.Threading.Helpers.WaitNode.DoTimedWait C# (CSharp) Метод

        public virtual bool DoTimedWait(IQueuedSync sync, TimeSpan duration)
        {
            lock (this)
            {
                if (sync.Recheck(this) || !_waiting)
                {
                    return true;
                }
                if (duration.Ticks <= 0)
                {
                    _waiting = false;
                    return false;
                }
                var deadline = DateTime.UtcNow.Add(duration);
                try
                {
                    for (;;)
                    {
                        Monitor.Wait(this, duration);
                        if (!_waiting) // definitely signalled
                            return true;
                        duration = deadline.Subtract(DateTime.UtcNow);
                        if (duration.Ticks <= 0) // time out
                        {
                            _waiting = false;
                            return false;
                        }
                    }
                }
                catch (ThreadInterruptedException ex)
                {
                    if (_waiting) // no notification
                    {
                        _waiting = false; // invalidate for the signaller
                        throw ex.PreserveStackTrace();
                    }
                    // thread was interrupted after it was notified
                    Thread.CurrentThread.Interrupt();
                    return true;
                }
            }
        }

 public override bool TryLock(TimeSpan timespan)
 {
     var caller = Thread.CurrentThread;
     lock (this)
     {
         if (GetHold(caller)) return true;
     }
     var n = new WaitNode();
     return n.DoTimedWait(this, timespan);
 }