Caucho.IIS.HmuxConnection.GetIdleStartTime C# (CSharp) Method

        internal long GetIdleStartTime()
        {
            return _idleStartTime;
        }

        private HmuxConnection OpenRecycle()
        {
            long           now     = Utils.CurrentTimeMillis();
            HmuxConnection channel = null;

            lock (this) {
                if (_idleHead != _idleTail)
                {
                    channel = _idle[_idleHead];
                    long freeTime = channel.GetIdleStartTime();

                    _idle[_idleHead] = null;
                    _idleHead        = (_idleHead + _idle.Length - 1) % _idle.Length;

                    if (now < freeTime + _loadBalanceIdleTime)
                    {
                        _activeCount++;

                        channel.ClearIdleStartTime();
                        channel.ToActive();

                        Trace.TraceInformation("OpenRecycle '{0}'", channel);

                        return(channel);
                    }
                }
            }

            if (channel != null)
            {
                if (_log.IsLoggable(EventLogEntryType.Information))
                {
                    _log.Info(this + " close idle " + channel
                              + " expire=" + new DateTime(channel.GetIdleStartTime() * 10 + _loadBalanceIdleTime * 10));
                }
                Trace.TraceInformation("closing expired channel '{0}'", channel);

                channel.CloseImpl();
            }

            Trace.TraceInformation("OpenRecyle return 'null'");

            return(null);
        }