/*
 */

#include <signal.h>
#include <time.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>

void xyz(sigval_t x)
{
   fprintf(stderr, "xyz\n");
}

int main(int argc, char *argv[])
{
  struct sigevent sig_spec;
  struct itimerspec tmr_setting;
  timer_t timer_h;

  sig_spec.sigev_notify = SIGEV_THREAD;
  sig_spec.sigev_notify_function = xyz;
  sig_spec.sigev_notify_attributes = NULL;

  if (timer_create(CLOCK_REALTIME, &sig_spec, &timer_h) < 0)
  {
     perror("timer_create");
     exit(1);
  }

  tmr_setting.it_value.tv_sec = 1;
  tmr_setting.it_value.tv_nsec = 0;
  tmr_setting.it_interval.tv_sec = 1;
  tmr_setting.it_interval.tv_nsec = 0;
  if (timer_settime(timer_h, 0, &tmr_setting, NULL) < 0)
  {
     perror("timer_settime");
  }

  sleep(30);
}