Nie możesz wybrać więcej, niż 25 tematów
Tematy muszą się zaczynać od litery lub cyfry, mogą zawierać myślniki ('-') i mogą mieć do 35 znaków.
32 wiersze
678 B
32 wiersze
678 B
#include <stdio.h>
|
|
#include <ulib.h>
|
|
|
|
int
|
|
main(void) {
|
|
int pid, ret, i ,j;
|
|
cprintf("I am the parent. Forking the child...\n");
|
|
pid = fork();
|
|
if (pid== 0) {
|
|
cprintf("I am the child. spinning ...\n");
|
|
while (1);
|
|
}else if (pid<0) {
|
|
panic("fork child error\n");
|
|
}
|
|
cprintf("I am the parent. Running the child...\n");
|
|
|
|
yield();
|
|
yield();
|
|
yield();
|
|
|
|
cprintf("I am the parent. Killing the child...\n");
|
|
|
|
assert((ret = kill(pid)) == 0);
|
|
cprintf("kill returns %d\n", ret);
|
|
|
|
assert((ret = waitpid(pid, NULL)) == 0);
|
|
cprintf("wait returns %d\n", ret);
|
|
|
|
cprintf("spin may pass.\n");
|
|
return 0;
|
|
}
|
|
|