Re: [Xenomai-help] How to use Xenomai libraries with "normal" (non Xenomai) linux processes ?

[Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>]

roderik.wildenburg@domain.hid wrote:
> I have build a library which makes use of some Xenomai-Posix functions (mainly shared memory but also some semaphore functions). This library provides functions (logging) which should be used by Xenomai tasks and Linux processes.
> When I link this new library with a standard linux process, this process obviously becomes automatically a Xenomai task (task is listed in /proc/xenomai/sched) just by linking with my library (not even calling a xeno-function is necessary). 
> Unfortunatelly this seems also to have an influence on the scheduling policy and the priority of the linux process:
> 
> When I set the policy (to SCHED_FIFO) and the priority of this linux process (by an external startup process) with :
> 	p.sched_priority = somepriority;
> 	sched_setscheduler(pidoflinuxprocess, SCHED_FIFO, &p);

sched_setscheduler is not what you want, it changes the scheduling
parameters of the whole process whereas you want to change scheduling
parameters of only one thread.
So, use pthread_setschedparam instead.

-- 
                                                 Gilles.