You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
70 lines
1.1 KiB
70 lines
1.1 KiB
#include <stdlib.h>
|
|
#include <sys/wait.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
#include <time.h>
|
|
|
|
void my_putnbr(int nb)
|
|
{
|
|
char c;
|
|
|
|
if (nb < 0)
|
|
{
|
|
if (nb == -2147483648)
|
|
{
|
|
write(1, "-", 1);
|
|
write(1, "2", 1);
|
|
my_putnbr(147483648);
|
|
return ;
|
|
}
|
|
nb = nb * -1;
|
|
write(1, "-", 1);
|
|
}
|
|
if (nb >= 0 && nb < 10)
|
|
{
|
|
c = nb + '0';
|
|
write(1, &c, 1);
|
|
}
|
|
if (nb >= 10)
|
|
{
|
|
my_putnbr(nb / 10);
|
|
my_putnbr(nb % 10);
|
|
}
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
pid_t pid;
|
|
int i;
|
|
int status;
|
|
|
|
i = 0;
|
|
status = 0;
|
|
switch(pid=fork())
|
|
{
|
|
case -1 :
|
|
write(2, "fork foireux\n", 13);
|
|
exit(errno);
|
|
case 0 :
|
|
while (i < 10)
|
|
{
|
|
my_putnbr(i);
|
|
write(1, "\n", 1);
|
|
nanosleep((const struct timespec[]){{0, 500000000L}}, NULL);
|
|
i++;
|
|
}
|
|
system("ps -f");
|
|
exit(2);
|
|
default :
|
|
//waitpid plutot que wait, on sait jamais si un fils caché venait à se présenter... Ça ruine des marriages ce genre d'histoire
|
|
waitpid(pid, &status, 0);
|
|
write(1, "Code de retour du fils : ", 25);
|
|
my_putnbr(status);
|
|
write(1, ".\n", 2);
|
|
write(1, "Fin du processus père de pid ", 30);
|
|
my_putnbr(getpid());
|
|
write(1, ".\n", 3);
|
|
}
|
|
exit(0);
|
|
}
|