jsdj.rar_Simulation

/***************************************************************** Algorithm Animation PURPOSE: This is the main applet driver. It coordinates the animation view, statistics view, and the input view. *****************************************************************/ import java.awt.*; import java.applet.*; import java.util.Vector; import java.util.Observer; import java.util.Observable; /* <applet code="CPU" width=10 height=10></applet> virtually not embedded in web page*/ public class AlgAnime extends Applet implements Observer { animeFrame anime; statsFrame stats; inputFrame input; Scheduler lesson; Vector Q; /*-------------------------------------------------------- Constructor PURPOSE: To set up all views, scheduling algorithm, and input queue --------------------------------------------------------*/ public void init() { anime = new animeFrame(); anime.show(); anime.resize(300,300); stats = new statsFrame(); stats.pack(); stats.show(); stats.resize(300,300); input = new inputFrame(this); input.show(); input.resize(300,300); lesson=null; Q = new Vector(1,1); } // set up lecture /*-------------------------------------------------------- Update PURPOSE: To respond to user input via GUIs; overriden version of system event handler PARAMTERS: references argument specified by user, and associates GUI handler --------------------------------------------------------*/ public void update(Observable obj, Object arg) { if (arg instanceof String) { if (((String)arg).equals("pause") && lesson!=null) lesson.thread.suspend(); else if (((String)arg).equals("resume") && lesson!=null) lesson.thread.resume(); else if (((String)arg).equals("clear")) { input.resetGUI(); Q.setSize(0); lesson.resetQ(); lesson.thread.stop(); lesson = null; } // reset all vectors else if (((String)arg).equals("quit")) { input.hide(); input.dispose(); anime.hide(); anime.dispose(); stats.hide(); stats.dispose(); } // quit applet } // string event else if (arg instanceof Packet) { getParms((Packet)arg); anime.cleargrid(); int click = anime.setgrid(Q); if (((Packet)arg).getAlg().equals("FCFS")) { anime.setTitle("First Come First Serve Scheduling"); lesson = new FCFS (Q, stats, anime,input,click); } // do FCFS else if (((Packet)arg).getAlg().equals("RR1")) { anime.setTitle("Round Robin, q = 1"); lesson = new RR1 (Q, stats, anime,input,click); } // do RR1 else if (((Packet)arg).getAlg().equals("RR4")) { anime.setTitle("Round Robin, q = 4"); lesson = new RR4 (Q, stats, anime, input,click); } // do RR4 else if (((Packet)arg).getAlg().equals("SPN")) { anime.setTitle("Shortest Process Next"); lesson = new SPN(Q, stats, anime, input,click); } // do SPN else if (((Packet)arg).getAlg().equals("SRT")) { anime.setTitle("Shortest Remaining Time"); lesson = new SRT(Q, stats, anime, input,click); } // do SRT else if (((Packet)arg).getAlg().equals("HRRN")) { anime.setTitle("Highest Response Ratio Next"); lesson = new HRRN(Q, stats, anime, input,click); } // do HRRN else if (((Packet)arg).getAlg().equals("FB1")) { anime.setTitle("Feedback, q = 1"); lesson = new FB1(Q, stats, anime, input,click); } // do FB1 } // hefty data packet->run } // handle event /*-------------------------------------------------------- Get Parms utility PURPOSE: To sort out input given by user and set up input queue PARAMETERS: information packet GUI given by user --------------------------------------------------------*/ private void getParms(Packet in) { String name, t1, t2, t3, mark ="\n"; Integer I = new Integer(0); int pos, a, s; boolean empty=false; t1 = in.getProc(); t2 = in.getArriv(); t3 = in.getServ(); do { pos = t1.indexOf(mark); if (pos<0) { name = t1; empty = true; } else name = t1.substring(0,pos); t1 = t1.substring(pos+1); pos = t2.indexOf(mark); if (pos<0) { a = I.parseInt(t2); empty = true; } else a = I.parseInt(t2.substring(0,pos)); t2 = t2.substring(pos+1); pos = t3.indexOf(mark); if (pos<0) { s = I.parseInt(t3); empty = true; } else s = I.parseInt(t3.substring(0,pos)); t3 = t3.substring(pos+1); process temp = new process(name, a, s); Q.addElement(temp); } while (!empty); } // set up Queue } // algorithm animation main driver