수다닷컴

1.번
public class TestScheduler
{
public static void main (String args[]) {
Thread.currentThread() .setPriority(Thread.MAX_PRIORITY);

Scheduler CPUScheduler=new Scheduler ();
CPUScheduler.start();

TestThread t1=new TestThread(Thread 1);
t1.start();
CPUScheduler.addThread(t1);

TestThread t2=new TestThread(Thread 2);
t2.start();
CPUScheduler.addThread(t2);

TestThread t3=new TestThread(Thread 3);
t3.start();
CPUScheduler.addThread(t3);
}
}

2.번

public class Scheduler extends Thread
{
public Scheduler(){
timeSlice=DEFAULT_TIME.SLICE;
queue=new CircularList();
}

public Scheduler(int quantum){
timeSlice=quantum;
queue=new CircularList();
}

public void addThread(Thread t){
t.setPriority(2);
queue.addItem(t);
}

private void schedulerSleep(){
try{
Thread.sleep(timeSlice);
}catch (InterruptedExeption e){};
}

public void run(){
Thread current;

this.setPriority(6);

while(true){
current=(Thread)queue.getNext();
if((current != null) && (current.isAlive())){
current.setPriority(4);
schedulerSleep();
current.setPriority(2);
}
}
}

private CircularList queue;
private int timeSlice;
private static final int DEFAULT_TIME_SLICE=1000;
}

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