Jens Köhler wrote: > 2009/3/6 Gilles Chanteperdrix <[email protected]> > >> Jens Köhler wrote: >>> Hello, >>> >>> I like to port a rtai application to xenomai. The rtai application has a >>> user space part and a kernel module. Both communication together by rtai >>> queues and a shared memory. >>> Do I need for xenomai still queues? Or is it f.i. possible to read or >> write >>> linux files from xenomai application without problems? >> reading and writing will work, but will cause the thread which does it >> to switch to secondary mode (if it is a real-time thread), so it may not >> be what you want. >> >> -- >> Gilles. > > > Hi Gilles, > > thank you for your fast answer. I need in periodic real time task data from > user space. Then I have to use a msg_queue!?
Xenomai allows real-time in user-space (as RTAI does, by the way), so the problem is not user-space versus kernel-space, the problem is primary mode versus secondary mode. > How can I check if my real time task/ thread runs accidentally in secondary > mode? See: http://www.xenomai.org/documentation/branches/v2.4.x/html/api/group__task.html#g915e7edfb0aaddb643794d7abc7093bf And for an introduction on xenomai native api, see: http://www.xenomai.org/documentation/branches/v2.3.x/pdf/Native-API-Tour-rev-C.pdf -- Gilles. _______________________________________________ Xenomai-help mailing list [email protected] https://mail.gna.org/listinfo/xenomai-help
