On Fri, 2011-01-21 at 18:01 +0100, Michel Rinaldi wrote: > Hi to all, > > I'm running an application on a Linux system with kernel 2.6.35.7 > patched with Xenomai 2.5.5.2, Adeos ipipe patch 2.7-04. > My application uses native skin and creates some realtime tasks, each > with rt_task_shadow(), each other with rt_task_create().
Sorry, -ENOPARSE. rt_task_shadow() is usually invoked from the main thread to make it a Xenomai thread, rt_task_create is normally used to create more tasks. Who is doing what in your code exactly? How many times is rt_task_shadow() invoked? > When I call for first time rt_task_create(), this function is very > slow (700-800 ms) to execute, also if rt_task_shadow() calls come > first. Subsequent calls of rt_task_create() are quick as expected. I > read on manual that at first call rt_task_create() creates a signal > handler for SIGWINCH signal: could be this operation that wastes time, > maybe on waiting some resources from Linx kernel? No, can't be that long. Something looks wrong in your application init. > Another problem that I've encountered is that if I call a > rt_int_delete() and then a rt_task_join() on userspace task that > handles destroyed IRQ, rt_task_join() never returns (obviously this > task was created with joinable flag). If I create this task without > joinable flag and then I call rt_task_delete() instead rt_task_join() > I obtain two different behaviours: sometimes rt_task_delete() returns > but I still view task on /proc/xenomai/sched (with X status), > sometimes system freezes on this call. Make sure to test the return values of ALL Xenomai syscalls in your app, particularly what rt_intr_wait() sends you back, and make sure to break out from your work loop whenever it signals any error. > Thanks to all in advance. > Regards > > Mauro Salvini > > > _______________________________________________ > Xenomai-help mailing list > [email protected] > https://mail.gna.org/listinfo/xenomai-help -- Philippe. _______________________________________________ Xenomai-help mailing list [email protected] https://mail.gna.org/listinfo/xenomai-help
