public GrblRequest Dequeue()
{
GrblRequest request = backingQueue.Dequeue();
CharacterCount -= request.Message.Length;
return(request);
}
private void completeStatusQueryRequest(GrblResponseStatus status)
{
lock (pendingRequests)
{
if (pendingStatusQueryRequest != null)
{
pendingStatusQueryRequest.Complete(status);
pendingStatusQueryRequest = null;
}
}
}
private void checkRequests()
{
while (pendingRequests.Count > 0)
{
if (pendingRequests.Peek().ResponseStatus == GrblResponseStatus.Pending)
{
break;
}
GrblRequest request = pendingRequests.Dequeue();
CurrentLine = request.LineNumber + 1;
if (request.ResponseStatus != GrblResponseStatus.Ok &&
request.ResponseStatus != GrblResponseStatus.Silent)
{
ErrorsDetected = true;
}
}
}
private void sendLines(GrblConnection connection)
{
while (nextLine < Lines.Count)
{
GrblRequest request = GrblRequest.CreateGCodeRequest(Lines[nextLine], nextLine);
if (!connection.Send(request))
{
break;
}
if (request.ResponseStatus == GrblResponseStatus.Failure)
{
break;
}
pendingRequests.Enqueue(request);
nextLine++;
}
}
private void completeQueuedRequest(GrblResponseStatus status, int?errorCode = null)
{
lock (pendingRequests)
{
if (!pendingRequests.IsEmpty)
{
GrblRequest request = pendingRequests.Dequeue();
if (request.Type == GrblRequestType.Homing)
{
pendingHomingRequest = false;
}
if (!errorCode.HasValue)
{
request.Complete(status);
}
else
{
request.Complete(status, errorCode.Value);
}
}
}
}
public void Enqueue(GrblRequest request)
{
backingQueue.Enqueue(request);
CharacterCount += request.Message.Length;
}
public bool Send(GrblRequest request)
{
if (request.ResponseStatus != GrblResponseStatus.Unsent)
{
throw new InvalidOperationException();
}
if (request.FireAndForget)
{
try
{
request.Sent();
#if LOG_TRAFFIC_CONSOLE
Console.WriteLine("SENT: " + request.Message);
#endif
serialWrite(request.Message);
request.Complete(GrblResponseStatus.Silent);
}
catch (Exception e)
{
Debug.WriteLine(e);
request.Complete(GrblResponseStatus.Failure);
}
return(true);
}
lock (pendingRequests)
{
if ((request.Message.Length > TxRxBufferSize - pendingRequests.CharacterCount) ||
(pendingStatusQueryRequest != null && request.Type == GrblRequestType.StatusQuery) ||
pendingHomingRequest)
{
return(false);
}
try
{
request.Sent();
#if LOG_TRAFFIC_CONSOLE
Console.WriteLine("SENT: " + request.Message);
#endif
serialWrite(request.Message);
}
catch (Exception e)
{
Debug.WriteLine(e);
serialPort.Close();
request.Complete(GrblResponseStatus.Failure);
return(true);
}
if (request.Type != GrblRequestType.StatusQuery)
{
pendingRequests.Enqueue(request);
if (request.Type == GrblRequestType.Homing)
{
pendingHomingRequest = true;
}
}
else
{
pendingStatusQueryRequest = request;
}
}
return(true);
}
