It is all one application. The FTP client uses only Async commands and loads the data to a stream. The USB component, based on CreateFile etc. has a high priority thread for reading data and stores the data in a string embedded in a Critical Section Acquire and Release. In this instance this is better than using PostMessage to basically generate an event into the main application thread. I now have a background timer in the main thread which monitors the incoming USB data string and if there is any FTP stream data to be processed.
We write the software and manufacture the teleprompter hardware. I also have my own iNEWS server. Graham -----Original Message----- From: twsocket-boun...@elists.org [mailto:twsocket-boun...@elists.org] On Behalf Of Angus Robertson - Magenta Systems Ltd Sent: 27 January 2011 16:16 To: twsocket@elists.org Subject: Re: [twsocket] Using the FTP Client > It is only when the FTP is getting data that it can go pear shaped. > While the FTP data is being processed, the USB is continually > monitored and FTP processing is interrupted to service the USB. Are FTP and USB servicing running as separate applications? FTP is presumably writing a simple file and not trying to immediately resend the data to USB? It may be the USB stuff needs 100% CPU and can not tolerate anything else running. You are using async FTP, or at least FTP in a thread which is how I got 250 sessions running? You really just need to keep Task Manager running while the problem is happening, and see how many seconds of CPU each different application is using, the hog should become obvious. > All this works on my system So you have the teleprompter for development testing? It is often hard to replicate customer environments. Angus -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
