Hi,
>
> > I also have tried
> >
> > struct timespec period;
> > period.tv_sec=0;
> > period.tv_nsec=PERIOD;
> >
> > clock_gettime ( CLOCK_REALTIME, &now);
> > pthread_make_periodic_np (pthread_self(), &now,&period);
> >
> > Although both compile and execute, non of them works fine to me. Any clue
> ?
>
> Here I have no clue, more exactly, I would need to see the whole code to
> see what is going wrong. But again, checking pthread_make_periodic_np
> return value, and looking at the documentation would help. My guess
> would be that at the time of pthread_make_periodic_np, "now" is a date
> in the past.
>
Yes !!! You are completelly right !!
I was following RTLinux scheme and that made me to fail.
Current code is :
clock_gettime ( TIMER_ABSTIME, &now);
now.tv_nsec=now.tv_nsec+PERIOD;
out=pthread_make_periodic_np (pthread_self(), &now,&period);
switch(out){
case 0 :
break;
case ESRCH:
printf("thread is invalid \n");
pthread_exit ((void *)-1);
break;
case ETIMEDOUT :
printf("the start time has already passed\n");
pthread_exit ((void *)-1);
break;
default :
printf(" output value not defined \n");
pthread_exit ((void *)-1);
}
>
> And pthread_make_periodic_np/pthread_wait_np are supposed to help
> porting code from RTLinux, they should not be used in new programs. You
> should be using clock_gettime with the TIMER_ABSTIME flag.
>
This is very useful for porting from RTLinux which is exactly what I'm
doing.
Any suggestion to substitute pthread_make_periodic_np and pthread_wait_np
in a POSIX skin ?
Thank you very much
Ramon
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