init_fn() {
int i, j, stat;
printf("Created init function: ");
printf("pid %d / niceval: %d\n",current->pid, current->stat_prio);
sched_waitq_init(&wq1);
sched_waitq_init(&wq2);
// Parent process forks 9 CPU-bound processes
for (i=1; i<10; i++) {
switch(sched_fork()) {
case -1:
fprintf(stderr,"Fork failed in pid %d\n",current->pid);
return -1;
break;
case 0:
sched_nice(20+i*2);
child_fn();
sched_exit(0);
break;
}
}
// Parent process waits for a long time before it
// does its own CPU-bound operations
kill(getpid(),SIGABRT);
for (;;) {
for (i=0; i<40; i++)
sched_sleep(&wq1);
kill(getpid(),SIGABRT);
waste_time(10);
kill(getpid(),SIGABRT);
}
}
init_fn(){
int i,p;
time_t t = time(0);
for(i=0;i<SCHED_NPROC-1;i++){
p=sched_fork();
if(p<0){ fprintf(stderr,"fork #%d failed\n",i); exit(-1); }
else if(!p){ sched_nice((i%40)-20); break; }
}
int x;
for(x=1;x<1<<DELAY_FACTOR;x++)
;
if(current->pid==1){
kill(getpid(),SIGABRT);
} else {
sched_exit(0);
}
struct sched_waitq wq1;
sched_waitq_init(&wq1);
sched_sleep(&wq1); // Sleep Indefinitely
}