int main(int argc, char * argv[])
{
int pid1,pid2,pid3;
while((pid1=fork())==-1);
if(pid1==0)
{
cpuio_bound(10,0,1);
exit(0);
}
while((pid2=fork())==-1);
if(pid2==0)
{
cpuio_bound(10,1,0);
exit(0);
}
while((pid3=fork())==-1);
if(pid3==0)
{
cpuio_bound(10,1,1);
exit(0);
}
printf("pid1:%d\n",pid1);
printf("pid2:%d\n",pid2);
printf("pid3:%d\n",pid3);
wait(0);
wait(0);
wait(0);
return 0;
}
int main(int argc, char * argv[])
{
int i;
/*Output*/
printf("parent_pid=%d\n",getpid());
for(i=0;i<5;i++)
{
/*fork() has two rets,we use child forks*/
if(!fork())
{
printf("child_process%d=%d\n",i+1,getpid());
cpuio_bound(10,4-i,i);
/*cut*/
exit(5);
}
}
return 0;
}
