POSIX timer_create
Joel Sherrill <joel@OARcorp.com>
joel.sherrill at OARcorp.com
Fri Jun 4 15:04:48 UTC 2004
Richard M. Barry wrote:
> When I call timer_create in my code, I get a errno=EINVAL. According to the timer_create man page, this means the timerid I used was invalid, but I used CLOCK_REALTIME, so it should be fine. Earlier in the code I set the clock, and it gives me the correct time when I red back the time, so I'm assuming the clock works. What am I missing? The call to timer_create is below:
>
> status = timer_create ( CLOCK_REALTIME, &Procs.event, &Procs.timer_id );
>
> if( status == -1 )
> {
> syslog( LOG_INFO, "Could not create a timer);
> switch (errno) {
> case EAGAIN : printf("errno=EAGAIN\n");break;
> case EINVAL : printf("errno=EINVAL\n");break;
> case ENOSYS : printf("errno=ENOSYS\n");break;
> default : printf("Unknown error\n");
> }
> }
Is the event structure properly initialized? Look at
cpukit/posix/src/ptimer1.c and you can ee what is being
checked.
Did you configure timers?
And there is a bug in confdefs.h so configure RTEMS timers NOT
POSIX timers.
--
Joel Sherrill, Ph.D. Director of Research & Development
joel at OARcorp.com On-Line Applications Research
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