itcs3146-project/memoryManagement.java

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Java
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/*Memory Management Program
* Used to test the algorithm and print out results.
*/
import java.io.File;
import java.util.Random;
import java.util.Scanner;
import java.util.StringTokenizer;
public class memoryManagement{
//added by David Turnbull variable to set memory for algorithms
public static int memory = 1024;
public static void main(String args[])throws Exception{
final int JOBAMOUNT = 1000;
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final int MEMORYSIZE = 10000;
File file = new File("null");
Scanner keyboard = new Scanner(System.in);
Scanner fileScan;
StringTokenizer token;
Random rand = new Random();
String read = null;
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int jobLength = 0;
long timeStart, timeEnd;
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//*Job Info*
int[] id = new int[JOBAMOUNT];
int[] size = new int[JOBAMOUNT];
int[] time = new int[JOBAMOUNT];
//******Add your algorithm class here******//
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baseAlgorithm alg = new dummyAlgorithm(MEMORYSIZE);
//Gets a file name, else creates five random jobs
do{
System.out.println("Type filename to load jobs from a file or just press enter for random jobs");
read = keyboard.nextLine();
file = new File(read + ".txt");
if(!read.equals("") && !file.exists())
System.out.println("File not found, try again");
}while(!read.equals("") && !file.exists());
//Create random jobs or read from the file and create jobs
if(read.equals("")){
System.out.print("Creating "+JOBAMOUNT+" random jobs...");
jobLength = JOBAMOUNT;
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for(int i = 0; i < jobLength; i++){
id[i] = i+1;
size[i] = rand.nextInt(1000)+1;
time[i] = rand.nextInt(1000)+1;
}
System.out.println("complete");
}
else{
System.out.print("File found, reading file...");
fileScan = new Scanner(file);
for(jobLength = 0; fileScan.hasNextLine() ; jobLength++){
token = new StringTokenizer(fileScan.nextLine(),",");
id[jobLength] = jobLength+1;
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size[jobLength] = Integer.parseInt(token.nextToken());
time[jobLength] = Integer.parseInt(token.nextToken());
}
fileScan.close();
System.out.println("complete");
System.out.println(jobLength+" jobs found on file");
}
//Send jobs to algorithm, time is calculated and printed out after completion
System.out.print("Sending jobs to algorithm...");
timeStart = System.currentTimeMillis();
for(int i = 0; i < jobLength; i++){
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alg.allocate(id[i], size[i], time[i]);
}
timeEnd = System.currentTimeMillis() - timeStart;
System.out.println("complete");
System.out.println("Elapsed time for algorithm to complete "+ jobLength+" jobs is "+timeEnd+" milliseconds");
System.out.println("Completed Successfully");
}
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}