Ujian 2 MK SO FCFS Sinkronisasi java Penjadwalan FCFS dan Sinkronisasi cubby hole Java

1. Materi Penjadwalan dan Sikronisasi (FCFS-CubbyHole) - 21 Mei 2014|Hal 1 dari 3
Ujian 2
Matakuliah: Sistem Operasi
Jurusan: Informatika - Universitas Syiah Kuala
Semester Genap 2013/2014 - Pengajar: Arie Budiansyah, M.Eng.
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Dibawah ini ada sebuah program penjadwalan FCFS dan sinkronisasi yang masih perlu
diperbaiki. Tugas anda adalah menyempurnakan program ini agar berjalan sesuai dengan konsep
penjadwalan dan sinkronisasi. *good luck.
“Bersemangatlah melakukan hal-hal yang bermanfaat bagimu dan jangan malas (putus asa)”
###############
import java.util.*;
class fcfs_sinkronisasi {
public static void main(String args[]) {
Scanner sc = new Scanner(System.in);
System.out.print("enter no. of processes : ");
int n=sc.nextInt();
int[] process = new int[n+1];
int[] burst = new int[n+1];
int[] waiting = new int[n+1];
int[] turn =new int[n+1];
for(int m=1; m<=n; m++){
process[m]=m;
System.out.print("enter burst time of process "+m+": ");
burst[m]=sc.nextInt();
//System.out.println("");
}
turn[1]=burst[1]; // turnaround time of first process is equal to its burst time.
for(int i=2; i<=n; i++) {
turn[i]=burst[i]+turn[i-1];
waiting[i]=turn[i]-burst[i];
}
for (int i=1; i<=n; i++) {
System.out.print("Burst Time "+i+": "+burst[i]+" --> ");
System.out.println("Waiting Time "+i+": "+waiting[i]);
}
for (int i=1; i<=n; i++) {
CubbyHole ch = new CubbyHole();
//ch[0] = new CubbyHole();

2. Materi Penjadwalan dan Sikronisasi (FCFS-CubbyHole) - 21 Mei 2014|Hal 2 dari 3
Petugas pgs = new Petugas(ch, n, burst[i]);
//pgs[0] = new Petugas();
Kendaraan kdr = new Kendaraan(ch, n);
//kdr[0] = new Kendaraan();
//System.out.print("jumlah Process: "+process.length);
//System.out.println("burstTime: "+burst[i]);
//System.out.println("Process ke: "+i+" --> Burst Time: "+burst[i]);
//ch[i] = new CubbyHole();
//Petugas(ch, n, burst);
//kdr[i] = new Kendaraan(ch[i], n);
//System.out.print("ch: "+ch[i]);
//System.out.print("pgs: "+pgs[i]);
//System.out.println("kdr: "+kdr[i]);
pgs.start();
kdr.start();
}
}
}
class CubbyHole {
private int contents;
private boolean available = false;
public synchronized int get() {
while (available == false) {
try {
wait();
} catch (InterruptedException e) { }
}
available = false;
notifyAll();
return contents;
}
public synchronized void put(int value) {
while (available == true) {
try {
wait();
} catch (InterruptedException e) { }
}
contents = value;
available = true;

3. Materi Penjadwalan dan Sikronisasi (FCFS-CubbyHole) - 21 Mei 2014|Hal 3 dari 3
notifyAll();
}
}
class Petugas extends Thread {
private CubbyHole cubbyhole;
private int processLength;
private int burstTime;
public Petugas(CubbyHole c, int processLength, int burstTime) {
cubbyhole = c;
this.processLength = processLength;
this.burstTime = burstTime;
//System.out.println("jmlh Proses: "+ processLength);
}
public void run() {
for (int i = 1; i < this.processLength; i++) {
//System.out.print("BurstTime: "+ burstTime);
cubbyhole.put(i);
System.out.println("Petugas memberi tiket: " + i);
try {
sleep((int)(burstTime * 1000));
} catch (InterruptedException e) { }
}
}
}
class Kendaraan extends Thread {
private CubbyHole cubbyhole;
private int processLength;
public Kendaraan(CubbyHole c,int processLength) {
cubbyhole = c;
this.processLength = processLength;
}
public void run() {
int value = 0;
for (int i = 0; i < this.processLength; i++) {
value = cubbyhole.get();
System.out.println("Kendaraan mengambil tiket: " + value);
}
}
}

4. D:Bahan mengajarGenap20132014SOQUIS-SO_1208107010012_PerbaikanProgramFCFSfcfs_sinkronisasi.java 02 June 2014 16:10
/* NAMA : CUT DIRAYATI SAFIRA
* NIM : 1208107010012
* quis sistem operasi
*/
import java.util.*;
public class fcfs_sinkronisasi
{
public static void main(String args[]) {
System.out.println("====================================================");
System.out.println("ttFCFS & SINKRONISASItt");
System.out.println("By: CUT DIRAYATI SAFIRA - 1208107010012");
System.out.println("====================================================n");
Scanner sc = new Scanner(System.in);
System.out.print("Masukkan Banyak Kendaraan (n) : ");
int n=sc.nextInt();
System.out.print("n");
int[] process=new int[n+1];
int [] burst=new int[n+1];
int [] waiting=new int[n+1];
int[] turn=new int[n+1];
for(int m=0;m<n;m++){
process[m]=m;
System.out.print("Masukkan Burst Time dari Proses ke-"+(m+1)+" : ");
burst[m]=sc.nextInt();
System.out.print("n");
}
turn[0]=burst[0]; // turnaround time of first process is equal to its burst time.
for(int i=1;i<n;i++) {
turn[i]=burst[i]+turn[i-1];
waiting[i]=turn[i]-burst[i];
}
for(int i=0; i<n; i++){
System.out.print("Burst Time ke-"+(i+1)+" adalah "+burst[i]+" & ");
System.out.println("Waiting Time ke-"+(i+1)+" adalah "+waiting[i]);
}
System.out.print("n");
//ch[0]=new CubbyHole();
CubbyHole ch = new CubbyHole();
Petugas pgs = new Petugas(ch, n, burst);
//pgs[0] = new Petugas();
Kendaraan kdr = new Kendaraan(ch,n);
//kdr[0] = new Kendaraan();
//System.out.println("Jumlah Proses : "+process.length);
//System.out.println("burst time : "+burst[i]);
//System.out.println("Process ke : "+i+"--> Burst Time : "+burst[i]);
//ch[i] = new CubbyHole();
//Petugas(ch, n, burst);
//kdr[i]=new Kendaraan(ch[i],n);
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5. D:Bahan mengajarGenap20132014SOQUIS-SO_1208107010012_PerbaikanProgramFCFSfcfs_sinkronisasi.java 02 June 2014 16:10
//System.out.println("ch: "+ch[i]);
//System.out.println("pgs: "+pgs[i]);
//System.out.println("kdr: "+kdr[i]);
pgs.start();
kdr.start();
}//}
/*int tot_turn=0,tot_wait=0;
for(int i=1;i<=n;i++){
tot_turn+=turn[i];
tot_wait+=waiting[i];
}
float avg_turn=(float)tot_turn/n;
float avg_wait=(float)tot_wait/n;
for(int m=1;m<=n;m++){
System.out.println("nprocess "+process[m]);
System.out.print("turn around time : "+turn[m]);
System.out.print(" waiting time : "+waiting[m]);
}
System.out.println("ntotal turn around time : "+tot_turn);
System.out.println("ntotal waiting time : "+tot_wait);
System.out.println("navg turn around time : "+avg_turn);
System.out.println("navg waiting time : "+avg_wait);*/
int i;
}
/* NAMA : CUT DIRAYATI SAFIRA
* NIM : 1208107010012
* quis sistem operasi
*/
public class Petugas extends Thread
{
private CubbyHole cubbyhole;
private int processLength;
private int[] burstTime;
public Petugas(CubbyHole c, int processLength, int[] burstTime ){
cubbyhole=c;
this.processLength = processLength;
this.burstTime = burstTime;
/*for(int i=0; i<processLength;i++){
System.out.println("burst "+i+": "+burstTime[i]);
}*/
//System.out.println("jumlah proses : "+processLength);
}
public void run(){
synchronized(cubbyhole){
for(int i=0; i<this.processLength; i++){
//System.out.print("Burst Time :+burstTime");
cubbyhole.put(i);
System.out.print("Petugas memberi tiket ke-"+(i+1)+" dengan Burst Time adalah "+
burstTime[i]);
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6. D:Bahan mengajarGenap20132014SOQUIS-SO_1208107010012_PerbaikanProgramFCFSfcfs_sinkronisasi.java 02 June 2014 16:10
try{
sleep((int)((burstTime[i])*100));
}catch(InterruptedException e){
System.out.println(e);
}
}
}
}
}
class Kendaraan extends Thread{
private CubbyHole cubbyhole;
private int processLength;
public Kendaraan(CubbyHole c, int processLength){
cubbyhole=c;
this.processLength=processLength;
}
public void run(){
int value=0;
synchronized(cubbyhole){
for(int i=0; i<this.processLength; i++){
value=cubbyhole.get();
System.out.print(" dan Kendaraan mengambil tiket ke-"+(value+1)+"n");
}
}
}
}
/* NAMA : CUT DIRAYATI SAFIRA
* NIM : 1208107010012
* quis sistem operasi
*/
public class CubbyHole
{
private int contents;
private boolean available = false;
public synchronized int get() {
while (available == false) {
try {
wait();
} catch (InterruptedException e) { }
}
available = false;
notifyAll();
return contents;
}
public synchronized void put(int value) {
while (available == true) {
try {
wait();
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7. D:Bahan mengajarGenap20132014SOQUIS-SO_1208107010012_PerbaikanProgramFCFSfcfs_sinkronisasi.java 02 June 2014 16:10
} catch (InterruptedException e) { }
}
contents = value;
available = true;
notifyAll();
}
}
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