/**
* **************** Attempts to run the computer for 1 clock cycle. Asks the current scheduler for
* which process to run, attempts to tick() that process.
*/
public void tick() {
int completedcounter = 0;
int turnaround = 0;
for (Process p : gProcList) {
if (p.getBeginTime() == gTicks) {
gCurrentScheduler.add(p);
}
if (p.isFinished()) {
completedcounter++;
turnaround += (p.getEndTime() - p.getBeginTime());
}
}
Process p = gCurrentScheduler.getNext();
if (p == null) {
gGraphicsComp.setTime(gTicks, Process.SYSTEM_PROCESS);
Process.SYSTEM_PROCESS.tick();
gTicks++;
gStatsComp.setTicks(gTicks);
gStatsComp.setNumJobsFinished(completedcounter);
gStatsComp.setTurnaround(
completedcounter == 0 ? 0 : (double) turnaround / (double) completedcounter);
gStatsComp.setThroughput((double) completedcounter * 100.0 / (double) gTicks);
gStatsComp.setCPUUtilization(
100.0 * (double) (gTicks - Process.SYSTEM_PROCESS.getTicks()) / (double) gTicks);
gParentWindow.halt();
} else {
if (gPreviousProc != null && !p.equals(gPreviousProc)) {
gGraphicsComp.setTime(gTicks, Process.SYSTEM_PROCESS);
Process.SYSTEM_PROCESS.tick();
} else {
p.tick();
gGraphicsComp.setTime(gTicks, p);
}
gTicks++;
if (p.isFinished()) {
p.setEndTime(gTicks);
}
gStatsComp.setTicks(gTicks);
gStatsComp.setNumJobsFinished(completedcounter);
gStatsComp.setTurnaround(
completedcounter == 0 ? 0 : (double) turnaround / (double) completedcounter);
gStatsComp.setThroughput((double) completedcounter * 100.0 / (double) gTicks);
gStatsComp.setCPUUtilization(
100.0 * (double) (gTicks - Process.SYSTEM_PROCESS.getTicks()) / (double) gTicks);
gPreviousProc = p;
}
}
/** ***************** Resets the graphics, lists, processes, stats, etc. */
public void reset() {
if (gFile != null) {
try {
loadFile(gFile);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
} else {
gProcList.clear();
gPreviousProc = null;
gParentWindow.halt();
gCurrentScheduler.clear();
gTicks = 0;
gGraphicsComp.init();
gStatsComp.init();
Process.SYSTEM_PROCESS.reset();
}
}
/**
* ****************** Loads a file as a process list
*
* @param mFile the file to load
* @throws FileNotFoundException
*/
public void loadFile(File mFile) throws FileNotFoundException {
gProcList.clear();
gPreviousProc = null;
gParentWindow.halt();
gCurrentScheduler.clear();
gTicks = 0;
gGraphicsComp.init();
gStatsComp.init();
Process.SYSTEM_PROCESS.reset();
gFile = mFile;
Scanner tScanner = new Scanner(gFile);
while (tScanner.hasNextLine()) {
String tmp = tScanner.nextLine();
if (tmp.length() > 0 && tmp.charAt(0) != '#') {
try {
gProcList.add(new Process(tmp));
} catch (RuntimeException e) {
System.err.println(e.getMessage());
}
}
gGraphicsComp.setProcList(gProcList);
}
}
