#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <time.h>

#define TIMERS 40

int main()
{
   sigevent_t event;
   memset(&event, 0, sizeof(event));

   timer_t timerid[TIMERS];
   memset(timerid, 0, sizeof(timerid));

   struct itimerspec value;
   memset(&value, 0, sizeof(value)); 

   int i = 0;

   for (i = 0; i < TIMERS; i++)
   {
      event.sigev_notify = SIGEV_NONE;
      int rc = timer_create(CLOCK_REALTIME, &event, &timerid[i]);
      if (0 != rc) 
      {
         printf("Couldn't create timer %d\n", i);
         return 1;
      }
   }

   for (i = 0; i < TIMERS; i++) 
   {
      value.it_value.tv_nsec = 320000000; // 320 [ms]
      int rc = timer_settime(timerid[i], 0, &value, NULL);
      if (0 != rc) 
      {
         printf("Couldn't set timer %d\n", i);
         return 1;
      }
   }

   sleep(1); // give all the timers a chance to fire

   for (i = 0; i < TIMERS; i++) 
   {
      printf("Destroying timer %d...", i); fflush(stdout);
      int rc = timer_delete(timerid[i]);
      printf("Done\n");
      if (0 != rc) 
      {
         printf("Couldn't delete timer %d\n", i);
         return 1;
      }
   }

   return 0;
}