Monday 10 November 2014

Dining Philosophers Problem



Class App


import javax.swing.*;




public class App {
JFrame f1;
Chopstick chopstick[];
Philosopher philosophers[];
public App(){
f1=new JFrame();
f1.setTitle("DINING PHILOSOPHER SIMULATOR | DEVELOPED BY MD.SHAHARYAR SHAUKAT");
f1.setSize(1100, 640);
f1.setVisible(true);
f1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f1.setLocationRelativeTo(null);
f1.setResizable(false);
initializePos();
initializePhilosopher();
Display obj=new Display();
obj.setBounds(0, 0, 1040, 600);
Thread t1=new Thread(obj);
t1.start();
new Thread(philosophers[0]).start();
new Thread(philosophers[1]).start();
new Thread(philosophers[2]).start();
new Thread(philosophers[3]).start();
new Thread(philosophers[4]).start();
//f1.add(obj0);
f1.add(obj);
f1.validate();
}
public void initializePos(){
chopstick=new Chopstick[5];
chopstick[0]=new Chopstick(0,270,330);
chopstick[1]=new Chopstick(1,200,200);
chopstick[2]=new Chopstick(2,350,120);
chopstick[3]=new Chopstick(3,500,210);
chopstick[4]=new Chopstick(4,430,330);
}
public void initializePhilosopher(){
philosophers = new Philosopher[5];
philosophers[0]=new Philosopher(0,chopstick[0],chopstick[4]);
philosophers[1]=new Philosopher(1,chopstick[1],chopstick[0]);
philosophers[2]=new Philosopher(2,chopstick[2],chopstick[1]);
philosophers[3]=new Philosopher(3,chopstick[3],chopstick[2]);
philosophers[4]=new Philosopher(4,chopstick[4],chopstick[3]);
}
public static void main(String args[]){
new App();
}

}

Class Chopstick

import java.util.concurrent.locks.ReentrantLock;


public class Chopstick extends ReentrantLock {
private int id;
private static int xpos[]=new int[5]; 
private static int ypos[]=new int[5];
public Chopstick(){
}
public Chopstick(int id, int xpos,int ypos){
this.id=id;
this.xpos[id]=xpos;
this.ypos[id]=ypos;
}
public static void setAxis(int id,int x,int y){
xpos[id]=x;
ypos[id]=y;
}
public int getXpos(int id){
return xpos[id];
}
public int getYpos(int id){
return ypos[id];
}

}

Class Philosopher

import java.util.Random;
import java.util.concurrent.locks.Lock;


public class Philosopher implements Runnable {
private int id;
private Lock leftChopstick;
private Lock rightChopstick;
private static  int noMeals[]=new int [5];
private Random timeGenerator = new Random();
private static int state[]=new int[5];
private static int quote[]=new int[5];
private Chopstick chopstick=new Chopstick();
public Philosopher(){
}
public Philosopher(int id,Lock leftChopstick, Lock rightChopstick){
this.id=id;
this.leftChopstick=leftChopstick;
this.rightChopstick=rightChopstick;
}
public void run(){
try {
while (true) {
think();
pickUpChopstick(leftChopstick,rightChopstick);
eat();
putDownChopsticks();
}
} catch (InterruptedException e) {
System.out.println("Philosopher " + id + " was interrupted.\n");
}
}
private void think() throws InterruptedException {
System.out.println("Philosopher " + id + " is thinking.\n");
System.out.flush();
if(id==0){
state[0]=4;
}
if(id==1){
state[1]=4;
}
if(id==2){
state[2]=4;
}
if(id==3){
state[3]=4;
}
if(id==4){
state[4]=4;
}//
Thread.sleep (1000+timeGenerator.nextInt(1000));
}
private void pickUpChopstick(Lock leftChopstick,Lock rightChopstick){
while(true){
boolean lc=false;
boolean rc=false;
try{
lc=leftChopstick.tryLock();
rc=rightChopstick.tryLock();
}finally{
if(lc&&rc){
System.out.println("Philosopher " + id + " Pick Up both Chop Stick.\n");
quote[id]=3;
return;
}
if(lc){
System.out.println("Philosopher " + id + " Pick Up  leftChop Stick And RightChop Stick is Busy.\n");
leftChopstick.unlock();
System.out.println("Philosopher " + id + " Put Down  leftChop Stick.\n");
quote[id]=1;
}
if(rc){
System.out.println("Philosopher " + id + " Pick Up  RightChop Stick And lefttChop Stick is Busy.\n");
rightChopstick.unlock();
System.out.println("Philosopher " + id + " Put Down  RightChop Stick.\n");
quote[id]=2;
}
}
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
private void eat() throws InterruptedException {
Thread.sleep(50);
quote[id]=0;
increment(id);
System.out.println("Philosopher " + id + " is eating.\n");
if(id==0){
chopstick.setAxis(0, 340, 350);
chopstick.setAxis(4, 380, 350);
state[0]=0;
}
if(id==1){
chopstick.setAxis(0, 220, 290);
chopstick.setAxis(1, 200, 250);
state[1]=0;
}
if(id==2){
chopstick.setAxis(1, 240, 150);
chopstick.setAxis(2, 280, 120);
state[2]=0;
}
if(id==3){
chopstick.setAxis(2, 430, 120);
chopstick.setAxis(3, 500, 150);
state[3]=0;
}
if(id==4){
chopstick.setAxis(3, 530, 270);
chopstick.setAxis(4, 490, 315);
state[4]=0;
}
System.out.flush();
Thread.sleep (400);
//
if(id==0){
state[0]=1;
}
if(id==1){
state[1]=1;
}
if(id==2){
state[2]=1;
}
if(id==3){
state[3]=1;
}
if(id==4){
state[4]=1;
}
//
Thread.sleep (400);
//
if(id==0){
state[0]=2;
}
if(id==1){
state[1]=2;
}
if(id==2){
state[2]=2;
}
if(id==3){
state[3]=2;
}
if(id==4){
state[4]=2;
}//
//
Thread.sleep (400);
//
if(id==0){
state[0]=3;
}
if(id==1){
state[1]=3;
}
if(id==2){
state[2]=3;
}
if(id==3){
state[3]=3;
}
if(id==4){
state[4]=3;
}//
Thread.sleep (200+timeGenerator.nextInt(200));
}
private void putDownChopsticks() {
leftChopstick.unlock();
rightChopstick.unlock();
System.out.println("Philosopher " + id + " put down Both ChopStick\n");
if(id==0){
chopstick.setAxis(0, 270, 330);
chopstick.setAxis(4, 430, 330);
state[0]=4;
}
if(id==1){
chopstick.setAxis(0, 270, 330);
chopstick.setAxis(1, 200, 200);
state[1]=4;
}
if(id==2){
chopstick.setAxis(1, 200, 200);
chopstick.setAxis(2, 350, 120);
state[2]=4;
}
if(id==3){
chopstick.setAxis(2, 350, 120);
chopstick.setAxis(3, 500, 210);
state[3]=4;
}
if(id==4){
chopstick.setAxis(3, 500, 210);
chopstick.setAxis(4, 430, 330);
state[4]=4;
}
}
public int getS(int id){
return state[id];
}
public void setS(int id,int s){
state[id]=s;
}
public void increment(int id){
noMeals[id]++;
}
public int getNoMeals(int id){
return noMeals[id];
}
public int getQuote(int id){
return quote[id];
}
}
DISPLAY CLASS


import java.awt.*;

import javax.swing.*;

public class Display extends JPanel implements Runnable {
Image bg;
Image s0,s1,s2,s3,s4;
Image plate[]=new Image[5];
Toolkit t;
Image state1,state2;
Font font;
Chopstick chopstick;
Philosopher philosopher;
public Display(){
t=Toolkit.getDefaultToolkit();
font = new Font("Serif", Font.PLAIN, 20);
bg=t.getImage("image//BG1.png");
s0=t.getImage("image//ts0.png");
s1=t.getImage("image//ts1.png");
s2=t.getImage("image//ts2.png");
s3=t.getImage("image//ts3.png");
s4=t.getImage("image//ts4.png");
state1=t.getImage("image//eating.jpg");
state2=t.getImage("image//thinking.jpg");
plate[0]=t.getImage("image//p0.png");
plate[1]=t.getImage("image//p2.png");
plate[2]=t.getImage("image//p3.png");
plate[3]=t.getImage("image//p4.png");
plate[4]=t.getImage("image//p5.png");
chopstick=new Chopstick();
philosopher=new Philosopher();
}
public void run(){
while(true){
repaint();
try {
Thread.sleep(50);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
public void paint(Graphics g){
super.paint(g);
//this.setBackground(Color.white);
g.drawImage(bg,0 , 0, 800, 600, null);
drawP(g);
drawP0(g);
drawP1(g);
drawP2(g);
drawP3(g);
drawP4(g);
draw0(g);
draw1(g);
draw2(g);
draw3(g);
draw4(g);
drawS0(g);
drawS1(g);
drawS2(g);
drawS3(g);
drawS4(g);
}
public void draw0(Graphics g){
g.drawImage(s0,chopstick.getXpos(0), chopstick.getYpos(0), 100, 100, null);
}
    public void draw1(Graphics g){
   
    g.drawImage(s1,chopstick.getXpos(1) , chopstick.getYpos(1), 100, 100, null);
}public void draw2(Graphics g){
g.drawImage(s2,chopstick.getXpos(2), chopstick.getYpos(2), 100, 100, null);
}public void draw3(Graphics g){
g.drawImage(s3,chopstick.getXpos(3), chopstick.getYpos(3), 100, 100, null);
}public void draw4(Graphics g){
g.drawImage(s4,chopstick.getXpos(4), chopstick.getYpos(4), 100, 100, null);
}
public void drawP0(Graphics g){
g.drawImage(plate[philosopher.getS(0)], 355,340, 100, 100, null);
}
public void drawP1(Graphics g){
g.drawImage(plate[philosopher.getS(1)], 210,275, 100, 100, null);
}
public void drawP2(Graphics g){
g.drawImage(plate[philosopher.getS(2)], 275,145, 100, 100, null);
}
public void drawP3(Graphics g){
g.drawImage(plate[philosopher.getS(3)], 445,145, 100, 100, null);
}
public void drawP4(Graphics g){
g.drawImage(plate[philosopher.getS(4)], 488,285, 100, 100, null);
}
public void drawP(Graphics g){
g.drawImage(plate[0], 355,340, 100, 100, null);
g.drawImage(plate[0], 210,275, 100, 100, null);
g.drawImage(plate[0], 275,145, 100, 100, null);
g.drawImage(plate[0], 445,145, 100, 100, null);
g.drawImage(plate[0], 488,285, 100, 100, null);
}
//
public void drawS0(Graphics g){
g.setFont(font);
//getNoMeals
g.setColor(Color.RED);
g.drawString("No Of Meals="+Integer.toString(philosopher.getNoMeals(0)), 920, 60);
g.setColor(Color.BLACK);
if(philosopher.getS(0)==4){
g.drawImage(state2,800 , 0, 120, 120, null);
g.drawString("Thinking", 920, 30);
}else{
g.drawImage(state1,800 , 0, 120, 120, null);
g.drawString("Eating", 920, 30);
}
}
public void drawS1(Graphics g){
g.setFont(font);
g.setColor(Color.RED);
g.drawString("No Of Meals="+Integer.toString(philosopher.getNoMeals(1)), 920, 180);
g.setColor(Color.BLACK);
if(philosopher.getS(1)==4){
g.drawImage(state2,800 , 120, 120, 120, null);
g.drawString("Thinking", 920, 150);
}else{
g.drawImage(state1,800 , 120, 120, 120, null);
g.drawString("Eating", 920, 150);
}
}
public void drawS2(Graphics g){
g.setFont(font);
g.setColor(Color.RED);
g.drawString("No Of Meals="+Integer.toString(philosopher.getNoMeals(2)), 920, 300);
g.setColor(Color.BLACK);
if(philosopher.getS(2)==4){
g.drawImage(state2,800 , 240, 120, 120, null);
g.drawString("Thinking", 920, 270);
}else{
g.drawImage(state1,800 , 240, 120, 120, null);
g.drawString("Eating", 920, 270);
}
}public void drawS3(Graphics g){
g.setFont(font);
g.setColor(Color.RED);
g.drawString("No Of Meals="+Integer.toString(philosopher.getNoMeals(3)), 920, 420);
g.setColor(Color.BLACK);
if(philosopher.getS(3)==4){
g.drawImage(state2,800, 360, 120, 120, null);
g.drawString("Thinking", 920, 390);
}else{
g.drawImage(state1,800, 360, 120, 120, null);
g.drawString("Eating", 920, 390);
}
}public void drawS4(Graphics g){
g.setFont(font);
g.setColor(Color.RED);
g.drawString("No Of Meals="+Integer.toString(philosopher.getNoMeals(4)), 920, 540);
g.setColor(Color.BLACK);
if(philosopher.getS(4)==4){
g.drawImage(state2,800, 480, 120, 120, null);
g.drawString("Thinking", 920, 510);
}else{
g.drawImage(state1,800, 480, 120, 120, null);
g.drawString("Eating", 920, 510);
}
}
public void drawQuote(Graphics g){
if(philosopher.getQuote(0)==1){
}
if(philosopher.getQuote(0)==2){
}if(philosopher.getQuote(0)==3){
}
}
    


}

11 comments:

  1. Spot Light16 November 2014 at 05:56

    thanks for your great application
    but what's the display class?

    ReplyDelete
  2. Unknown28 July 2015 at 09:55

    Please whats img?

    ReplyDelete
  3. Unknown28 July 2015 at 09:55

    This comment has been removed by the author.

    ReplyDelete
  4. Unknown20 October 2015 at 10:14

    Can you share the images please and an amazing application helped me alot with my OS project

    ReplyDelete
  5. Unknown22 December 2015 at 03:34

    Please I need the images .Upload it

    ReplyDelete
  6. Unknown4 March 2016 at 01:38

    This comment has been removed by the author.

    ReplyDelete
  7. Unknown11 June 2016 at 19:12

    images pls

    ReplyDelete
  8. Unknown10 December 2016 at 13:17

    sir please upload the image for learning and understand ty

    ReplyDelete
  9. Unknown3 April 2017 at 19:46

    Hi bro, I´ve sent you a message . Can you help me please?

    ReplyDelete

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