private void ReadFromQueue(object o)
{
_queueStats.Start();
Thread.BeginThreadAffinity(); // ensure we are not switching between OS threads. Required at least for v8.
while (!_stop)
{
Message msg = null;
try
{
if (!_queue.TryDequeue(out msg))
{
_starving = true;
_queueStats.EnterIdle();
_msgAddEvent.Wait(100);
_msgAddEvent.Reset();
_starving = false;
}
else if (msg != null)
{
_queueStats.EnterBusy();
var cnt = _queue.Count;
_queueStats.ProcessingStarted(msg.GetType(), cnt);
if (_watchSlowMsg)
{
var start = DateTime.UtcNow;
_consumer.Handle(msg);
var elapsed = DateTime.UtcNow - start;
if (elapsed > _slowMsgThreshold)
{
Log.Trace("SLOW QUEUE MSG [{0}]: {1} - {2}ms. Q: {3}/{4}.",
Name, _queueStats.InProgressMessage.Name, (int)elapsed.TotalMilliseconds, cnt, _queue.Count);
if (elapsed > VerySlowMsgThreshold)// && !(msg is SystemMessage.SystemInit))
{
Log.Error("---!!! VERY SLOW QUEUE MSG [{0}]: {1} - {2}ms. Q: {3}/{4}.",
Name, _queueStats.InProgressMessage.Name, (int)elapsed.TotalMilliseconds, cnt, _queue.Count);
}
}
}
else
{
_consumer.Handle(msg);
}
_queueStats.ProcessingEnded(1);
}
}
catch (Exception ex)
{
Log.ErrorException(ex, $"Error while processing message {msg} in queued handler '{Name}'.");
}
}
_queueStats.Stop();
_stopped.Set();
_queueMonitor.Unregister(this);
Thread.EndThreadAffinity();
}
private void ReadFromQueue(object o)
{
_queueStats.Start();
Thread.BeginThreadAffinity(); // ensure we are not switching between OS threads. Required at least for v8.
const int spinmax = 5000;
var iterationsCount = 0;
while (!_stop)
{
Message msg = null;
try
{
if (!_queue.TryDequeue(out msg))
{
_queueStats.EnterIdle();
iterationsCount += 1;
if (iterationsCount < spinmax)
{
//do nothing... spin
}
else
{
Thread.Sleep(1);
}
}
else
{
_queueStats.EnterBusy();
var cnt = _queue.Count;
_queueStats.ProcessingStarted(msg.GetType(), cnt);
if (_watchSlowMsg)
{
var start = DateTime.UtcNow;
_consumer.Handle(msg);
var elapsed = DateTime.UtcNow - start;
if (elapsed > _slowMsgThreshold)
{
Log.Trace("SLOW QUEUE MSG [{0}]: {1} - {2}ms. Q: {3}/{4}.",
Name, _queueStats.InProgressMessage.Name, (int)elapsed.TotalMilliseconds, cnt, _queue.Count);
if (elapsed > QueuedHandler.VerySlowMsgThreshold)// && !(msg is SystemMessage.SystemInit))
{
Log.Error("---!!! VERY SLOW QUEUE MSG [{0}]: {1} - {2}ms. Q: {3}/{4}.",
Name, _queueStats.InProgressMessage.Name, (int)elapsed.TotalMilliseconds, cnt, _queue.Count);
}
}
}
else
{
_consumer.Handle(msg);
}
_queueStats.ProcessingEnded(1);
}
}
catch (Exception ex)
{
Log.ErrorException(ex, String.Format("Error while processing message {0} in queued handler '{1}'.", msg, Name), ex);
}
}
_queueStats.Stop();
_stopped.Set();
_queueMonitor.Unregister(this);
Thread.EndThreadAffinity();
}