/* * Written by JJ Shepherd */ import java.util.*; public class ProcessSchedulerSimulator { public static final int MAX_SIM_TIME = 50;//Max cycle times public static final double MAX_PROC_TIME = 15.0; public static final int RAND_ADD_VAL = 3;//A value that adds a new process only when it's a multiple. public static final int RAND_CANCEL_VAL = 23;//A value that ends the current process only it's a multiple. public static Random rng = new Random(10);//Random number generator. Add a number into its parameter to fix its seed value public static void main(String[] args) { //Creating process scheduler ProcessScheduler scheduler = new ProcessScheduler(); int currProcCount = 0; Process currProcess; printHeader("Welcome to the\nprocess scheduler\nsimulator"); System.out.println("\n"); for(int i=0;i 0.0) { printAction("Current Process "+currProcess.toString()); currProcess.setCompletionTime(currProcess.getCompletionTime()-1.0); printAction("Updating Completion Time "+currProcess.toString()); } else { printAction("Current Process Complete"); scheduler.runNextProcess(); currProcess = scheduler.getCurrentProcess(); if(currProcess!=null) { printAction("New current process "+currProcess.toString()); } else { printAction("No current process"); } } //Check status of the process queue printAction("Current Process Queue"); scheduler.printProcessQueue(); } } public static void addRandomProcess(ProcessScheduler scheduler, int count) { String name = "Process"+(count); double randTime = rng.nextDouble()*MAX_PROC_TIME; Process p = new Process(name,randTime); printAction("Adding a new Process " + p.toString()); scheduler.addProcess(p); } public static void printHeader(String data) { System.out.println("---------------------------\n"+data+"\n---------------------------"); } public static void printAction(String data) { System.out.println("***"+data+"***"); } }
