60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
|
/**********************************************************/
|
|||
|
|
/* DUT INFORMATIQUE - M311 - R. CHIGNOLI */
|
|||
|
|
/* p_fork_signal : Apr<70>s fork, */
|
|||
|
|
/* - PERE : Affiche son pid et ppid, */
|
|||
|
|
/* Ignore le signal SIGINT et le montre */
|
|||
|
|
/* S'arrete <20> la reception du signal SIGUSR1, */
|
|||
|
|
/* se met en boucle infinie. */
|
|||
|
|
/* - FILS : Affiche son pid et son ppid, */
|
|||
|
|
/* Envoie trois signaux SIGINT au pere, */
|
|||
|
|
/* Attend un signal SIGTERM de l'utilisateur */
|
|||
|
|
/* Se met en boucle infinie. */
|
|||
|
|
/* Envoie le signal SIGUSR1 a son pere a */
|
|||
|
|
/* l'interception du signal SIGTERM puis */
|
|||
|
|
/* meurt. */
|
|||
|
|
/**********************************************************/
|
|||
|
|
# include <stdio.h>
|
|||
|
|
# include <stdlib.h>
|
|||
|
|
# include <signal.h>
|
|||
|
|
# include <unistd.h>
|
|||
|
|
|
|||
|
|
void repSIGINT() {
|
|||
|
|
printf ("\nJ'ignore le signal SIGINT (<Ctrl + \\C>)\n");
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
int main () {
|
|||
|
|
int res;
|
|||
|
|
res = fork();
|
|||
|
|
|
|||
|
|
if (res < 0){
|
|||
|
|
printf ("ERREUR FORK\n");
|
|||
|
|
}
|
|||
|
|
else {
|
|||
|
|
if (res == 0)
|
|||
|
|
{ /************************** FILS ***********************/
|
|||
|
|
printf("Je suis le fils : ");
|
|||
|
|
printf("pid : %d\n", getpid());
|
|||
|
|
printf("ppid : %d\n",getppid());
|
|||
|
|
for (int i = 0; i < 5; i++)
|
|||
|
|
{
|
|||
|
|
kill(getppid(), SIGINT);
|
|||
|
|
sleep(1);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{ /************************** PERE ***********************/
|
|||
|
|
printf("Je suis le père : ");
|
|||
|
|
printf("pid : %d\n", getpid());
|
|||
|
|
printf("ppid : %d\n",getppid());
|
|||
|
|
|
|||
|
|
signal(SIGINT, repSIGINT);
|
|||
|
|
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
for(;;);
|
|||
|
|
|
|||
|
|
return 0;
|
|||
|
|
}
|