Em Segunda 20 Março 2006 21:24, Jan Kiszka escreveu: >... >You may want to have a look at this thread regarding poll/select and RT: >http://www.mail-archive.com/rtnet-users%40lists.sourceforge.net/msg00968.htm
I tried to. Not found. But I didn't give up so quicky. It was missing the final 'l': http://www.mail-archive.com/rtnet-users%40lists.sourceforge.net/msg00968.html >Do video capturing applications tend to have to observe multiple >channels asynchronously via a single thread? If so, my statement about >how often poll/select is actually required in RT-applications may have >to be reconsidered. Actually, I don't see any reasonable reason for using select/poll in rt applications. But, while trying to keep the API similar to V4L2, I would implement them by IOCTL and think it is OK, since it was already done for MMAP/MUNMAP. I don't think it worths writing the poll/select rt like functions... What could be discussed here is if it will be required or not to have those calls needed when using streaming (most designs will use streaming). I don't think it should be required as it is on V4L2, but could be implemented optionally, as IOCTL calls. But I would need to investigate more this topic. I'll do it tomorrow... I'm the last man in the lab and they are calling me out for closing the lab... >... >Does your time allow to list the minimal generic services a RTDM video >capturing driver has to provide in a similar fashion like the serial or >the CAN profile? If it's mostly about copying existing Linux API specs, >feel free to just reference them. But the differences should certainly >fill up a RT-video (or so) profile, and that would be great! I'll think about it and will answer tomorrow. Regards, Rodrigo _______________________________________________________ Yahoo! doce lar. Faça do Yahoo! sua homepage. http://br.yahoo.com/homepageset.html _______________________________________________ Xenomai-core mailing list Xenomai-core@gna.org https://mail.gna.org/listinfo/xenomai-core
