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

void FastTask(union sigval obj)
{
    printf("Fast task call.\n"); 
}

void SlowTask(union sigval obj)
{
    printf("Begin the slow and the long execution task call.\n");
    sleep(1);
    printf("End the slow and the long execution task call.\n");
}

int main( int argc, char **argv )
{
    //Create and start the fast timer
    //- Create fast timer -
    timer_t tmIdFast;
    struct sigevent sigev;
    sigev.sigev_notify = SIGEV_THREAD;
    sigev.sigev_value.sival_ptr = NULL;
    sigev.sigev_notify_function = FastTask;
    sigev.sigev_notify_attributes = NULL;
    timer_create(CLOCK_REALTIME,&sigev,&tmIdFast);
    
    //- Start the fast timer -
    struct itimerspec itval;
    itval.it_interval.tv_sec = itval.it_value.tv_sec = 0;
    itval.it_interval.tv_nsec = itval.it_value.tv_nsec = 200000000;
    timer_settime(tmIdFast, 0, &itval, NULL);
		

    //Create and start the slow and the long execution timer
    //- Create the slow and the long execution timer -
    timer_t tmIdSlow;
    sigev.sigev_notify = SIGEV_THREAD;
    sigev.sigev_value.sival_ptr = NULL;
    sigev.sigev_notify_function = SlowTask;
    sigev.sigev_notify_attributes = NULL;
    timer_create(CLOCK_REALTIME,&sigev,&tmIdSlow);    
 
    //- Start the slow and the long execution timer -
    itval.it_interval.tv_sec = itval.it_value.tv_sec = 2;
    itval.it_interval.tv_nsec = itval.it_value.tv_nsec = 0;
    timer_settime(tmIdSlow, 0, &itval, NULL);

    sleep(10);

    return 0;
}