1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60
| #include<unistd.h>
#include<stdio.h>
#include<stdlib.h>
#include<signal.h>
#include<sys/types.h>
void handler(int sig);
int main(int argc, char * argv[])
{
int tube1[2];
int tube2[2];
int n=atoi(argv[1]), x, pid;
int p = pipe(tube1),p2=pipe(tube2);
signal(SIGUSR1,handler);
pid=fork();
while(1)
{
if(pid==0) {
close(tube2[1]);
read(tube2[0],&n,sizeof(int));
while(n % 2 != 0) {
n *=3+1;
printf("\n fils : %d",n);
if(n == 1){
exit(0);
write(tube1[1],&n,sizeof(int));
close(tube1[1]);
kill(getppid(),SIGUSR1);
pause();
} else {
close(tube1[1]);
read(tube1[0],&n,sizeof(int));
close(tube1[0]);
printf("\n pere: %d",n);
}
while(n%2==0) {
n /= 2;
printf("\n pere: %d",n);
if(n==1)
exit(0);
}
}
close(tube2[0]);
write(tube2[1],&n,sizeof(int));
close(tube2[1]);
kill(pid,SIGUSR1);
}
}
return 0;
}
int handler(int sig)
{
// Que vas tu mettre ici?
} |
Partager