有人能把哲学家吃饭问题,改为哲学家喝酒问题吗?
吃饭问题原码如下
我吃是想把fork改成瓶子,但是不同是瓶子有一个就可以喝,fork要有两个才可以吃
import java.awt.*;
import java.applet.*;
public class Diners extends Applet {
PhilCanvas display;
Thread[] phil= new Thread[PhilCanvas.NUMPHILS];
Fork[] fork = new Fork[PhilCanvas.NUMPHILS];
Scrollbar slider;
Button restart;
Button freeze;
boolean fixed = false;
public void init() {
setLayout(new BorderLayout());
String s = getParameter("Version");
fixed = s.equals("FIXED");
display = new PhilCanvas(this);
display.setSize(300,320);
add("Center",display);
slider = new Scrollbar(Scrollbar.HORIZONTAL, 50, 5, 0, 100);
restart = new Button("Restart");
freeze = new Button("Freeze");
Panel p1 = new Panel();
p1.setLayout(new BorderLayout());
p1.add("Center",slider);
p1.add("East",restart);
p1.add("West",freeze);
add("South",p1);
}
Thread makePhilosopher(Diners d, int id, Fork left, Fork right) {
if (fixed)
return new FixedPhilosopher(d,id,left,right);
else
return new Philosopher(d,id,left,right);
}
public int sleepTime() {
return (slider.getValue()*(int)(100*Math.random()));
}
public int eatTime() {
return (slider.getValue()*(int)(50*Math.random()));
}
public void start() {
for (int i =0; i<display.NUMPHILS; ++i)
fork[i] = new Fork(display,i);
for (int i =0; i<display.NUMPHILS; ++i){
phil[i] = makePhilosopher(this,i,
fork[(i-1+display.NUMPHILS)% display.NUMPHILS],
fork[i]);
phil[i].start();
}
}
public void stop() {
for (int i =0; i<display.NUMPHILS; ++i) {
phil[i].interrupt();
phil[i].stop(); //required for java 1.1
}
}
public boolean handleEvent(Event event) {
if (event.id != event.ACTION_EVENT) {
return super.handleEvent(event);
} else if(event.target==restart) {
if (display.deadlocked()) {
stop();
slider.setValue(50);
start();
}
display.thaw();
return true;
} else if (event.target == freeze) {
display.freeze();
return true;
} else
return super.handleEvent(event);
}
}