/// <summary>
/// Checks if gdb is ready and sends the next command
/// </summary>
private void ProcessQueue()
{
lock (_commands)
{
if (_commands.Count == 0 || _gdbReadyForInput == false)
return;
_gdbReadyForInput = false;
WriteLine (_commands.Peek ().Command);
_currentCommand = _commands.Dequeue ();
//If no response handler is specified, we don't need the command anymore
if (_currentCommand.ResponseHandler == null)
{
_currentCommand.CommandFinished ();
_currentCommand = null;
}
}
}
/// <summary>
/// Processes responses received from GDB.
/// There may be direct responses to commands or async responses
/// </summary>
/// <param name="lines"></param>
private void ReceivedNewLine(List<string> lines)
{
lock (_commands)
{
if (_currentCommand != null && _currentCommand.ResponseHandler == null)
_currentCommand = null;
if (_currentCommand != null && _currentCommand.ResponseHandler != null)
{
try
{
GDBResponseHandler.HandleResponseEnum responseEnum = (GDBResponseHandler.HandleResponseEnum)
_currentCommand.ResponseHandler.HandleResponse (this, lines.ToArray (), !_gdbReadyForInput);
if (responseEnum == GDBResponseHandler.HandleResponseEnum.NotHandled)
{
//TODO: Forward to permanent handlers
}
else if (responseEnum == GDBResponseHandler.HandleResponseEnum.Handled)
{
//Last command and response processed
_currentCommand.CommandFinished();
_currentCommand = null;
lines.Clear();
}
else if(responseEnum == GDBResponseHandler.HandleResponseEnum.RequestLine && _gdbReadyForInput)
{
//Wrong behaviour
throw new ArgumentException("Cannot request another response line if gdb is ready for input");
}
}
catch(Exception e)
{
GdbLogLine(string.Format("Error Handling response for handler '{0}': {1}",
_currentCommand.ResponseHandler.LogIdentifier,
e));
}
}
else
{
foreach(GDBResponseHandler permanentResponseHandler in _permanentResponseHandlers)
{
GDBResponseHandler.HandleResponseEnum responseEnum = permanentResponseHandler.HandleResponse(this, lines.ToArray(), !_gdbReadyForInput);
if(responseEnum == GDBResponseHandler.HandleResponseEnum.Handled)
{
lines.Clear();
break;
}
else if(responseEnum == GDBResponseHandler.HandleResponseEnum.RequestLine && _gdbReadyForInput)
{
//Wrong behaviour
throw new ArgumentException("Cannot request another response line if gdb is ready for input");
}
else if(responseEnum == GDBResponseHandler.HandleResponseEnum.RequestLine)
break;
}
}
}
}
/// <summary>
/// Queues the command, it gets sent as soon as gdb is ready for input
/// </summary>
/// <param name="cmd">
/// A <see cref="GDBCommand"/>
/// </param>
public void QueueCommand(GDBCommand cmd)
{
lock(_commands)
{
_commands.Enqueue(cmd);
}
ProcessQueue();
}