SCR6_1

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

#define MILI_SEC 1000000
#define IGNORE_VALUE 1000

const long INTERVAL_MS = 500*MILI_SEC;
unsigned int i=0,tmp=0;
unsigned int RUNNING_FLAG = 1;
unsigned int IGNORE_FLAG = 0;


//Reakcje na sygnał
void SIGALRM_handler(int signalNumber);
void SIGTERM_handler(int signalNubmer);
void SIGUSR1_handler(int signalNumber);

int main()

{
   struct timespec sleepValue={0};
   sleepValue.tv_nsec = INTERVAL_MS;

   //wyłapywanie sygnałów
   signal(SIGALRM,SIGALRM_handler);
   signal(SIGTERM,SIGTERM_handler);
   signal(SIGUSR2,SIG_IGN); //ignorowanie syganłu
   signal(SIGUSR1,SIGUSR1_handler);

  while(RUNNING_FLAG)
    {
         nanosleep(&sleepValue, NULL);
     printf("%d    %d\n",i, IGNORE_FLAG);
         ++i;


     if(IGNORE_FLAG == 1){
     if(i>tmp+IGNORE_VALUE){
       IGNORE_FLAG = 0;
     }
     }
    }
  return 0;
}


void SIGALRM_handler(int signalNumber)
{
  printf("Wylapano sygnal: %d \n",signalNumber);
  printf("Zakonczenie dzialania programu... \n");
  RUNNING_FLAG=0;

}

void SIGTERM_handler(int signalNumber)
{
  printf("Wylapano sygnal: %d \n",signalNumber);

}
void SIGUSR1_handler(int signalNumber)
{
  if(IGNORE_FLAG == 0) {
    printf("Wylapano sygnal: %d \n",signalNumber);
    IGNORE_FLAG = 1;
    tmp=i;
  }
}