Application locking up

[Ted Gress]

Hi everyone,

I have a problem with my application. Everytime I run it after a minute or so it locks up. I'm not sure what is causing thins - if its too many threads, or what? Could you please give me some suggestions
on how to resolve this,


Thanks,

Ted

[Mano Ag]

Hi Ted,

What kind of application are you running ? What does it do ? Can you post the code ?

[Pete Letkeman]

As Mano pointed out there are too many unknowns are this point especially without any code.

However here are a few stabs in the dark:

Many times people have issues with concurrency/mult threaded programming

This could be related to only your system e.g. AntiVirus software or firewall

Inaccessible or slow resource(s)

As you can see, without any code to analyze the problems can range drastically.

[Ted Gress]

It is a 3D game editor...well its supposed to be. I use a lot of static classes and threads and I think that's part of it but I'm not convinced that's the only problem lurking.


The main function that initializes all the threads etc... is below:

public class MainMerged {

	// The role of this class is to test out all the
	// programmatic systems before graphics are
	// introduced

	public static MessageManager messageManager = new MessageManager();
	public static SceneGraphManager sceneGraph = new SceneGraphManager();
	public static WebServiceFactory webServiceFactory = new WebServiceFactory();
	public static GameBlackboard gameBlackBoard = new GameBlackboard();
	public static XMLAdapter xmlAdapter = new XMLAdapter();
	public static ObjectManager objManager = new ObjectManager();
	public static ThreadFactory threadFactory;
	public static CEventManager eventManager = new CEventManager();
	public static PublishingManager publishManager = new PublishingManager();
	public static CScheduler scheduler = new CScheduler();
	public static CTaskManager taskManager = new CTaskManager();
	// public static Profiler profiler = new Profiler();
	public static DTIClass dtiClass = new DTIClass("Main", null);

	public static OutputLog log = new OutputLog();

	// UI classes
	public static Inspector ins = new Inspector();
	public static InspectorManager insm = new InspectorManager();
	public static Manager manager = new Manager();
	public static UserInterface ui = new UserInterface();
	public static GameLogic gameLogic = new GameLogic();
	static boolean simulate = false; // set to true to run simulation without rasterization
	static RunThrough runThrough = new RunThrough();
	public static InputHandler inputHandler = new InputHandler();
	public static InputManager inputManager = new InputManager();

	//

	// clock object
	public static CClock clock = new CClock();

	public static CProfiler profiler = new CProfiler();

	public static JournalManager journal = new JournalManager();
	
	public static Shell shell = new Shell();
	

	public static void main(String[] args) throws InterruptedException, FileNotFoundException {
		System.out.println("Welcome to NecroTek3D");

		// initialize journaling system
		JournalManager journaling = new JournalManager();
		Thread journalingThread = new Thread(journaling);
		journalingThread.start();

		JournalManager.InitJournal(JournalManager.file);
		JournalManager.beginJournal();

		////Thread t0 = new Thread(log);
		////t0.start();

		
		// Launch Profiler, Journal, and Logging Systems
		Thread m = new Thread(profiler);
		m.start();
		CProfiler.ProfileBegin("Main Merged");

		// Launching Journal
		CJournal.Journal(Main.class, "Launching the Journaling ");

		Thread j = new  Thread(journal);
		j.start();
		
		// initializing clock system
		////JournalManager.JournalEntry(MainMerged.class, "main", "Launching clock timer thread");
		////Thread c = new Thread(clock);
		////c.start();

		// Initialize scheduling system
		CJournal.Journal(Main.class, "Launching the scheduling system");
		CTimerManager.init();
		CJournal.Journal(Main.class, "Begin Timing. Testing Timer Unit");

		// Initialize a dummy timer
		CTimer dummy_timer = CTimerManager.getNewTimer(30, 2);

		// Create a test message

		Message message = new Message();
		message.mflag = EEventMachine.TEST_EVENT_1;

		CJournal.Journal(Main.class, "Testing messaging system " + message.mflag.toString());
		CJournal.Journal(Main.class, "Set message.mflag to " + message.mflag.toString());

		CJournal.Journal(Main.class, "Testing Task Manager");

		CTask task = new CTask();
		task.message = message;

		CJournal.Journal(Main.class, "Set task message to dummy message");

		CJournal.Journal(Main.class, "Testing Scheduler");

		CScheduler.addToSchedule(task);

		CEvent event = new CEvent();

		CJournal.Journal(Main.class, "Testing Event Manager");
		CJournal.Journal(Main.class, "Created dummy CEvent. Pushing to event manager.");

		CEventManager.push_events(event);

		// Initialize memory system

		/*
		 * CJournal.Journal(Main.class, "Testing Memory System");
		 * 
		 * CJournal.Journal(Main.class, "Establishing memory pool");
		 * 
		 * objManager.InitPool();
		 * 
		 * CJournal.Journal(Main.class, "Attempting memory request: Dummy string object"
		 * );
		 * 
		 * String stringObject = (String) ObjectManager.requestObjectOfClass(String);
		 * 
		 * //System.out.println(stringObject);
		 * 
		 * CJournal.Journal(Main.class,
		 * "Attempting integer memory request. Dummy integer objects");
		 * 
		 * Integer intObject = (Integer) ObjectManager.requestObjectOfClass();
		 * 
		 * //test formula
		 * 
		 * int a = 0; int b = 1; int c = intObject.intValue(); c = a + b;
		 * 
		 * CJournal.Journal(Main.class, "Dumy keycode for memory. Value is " + c +
		 * "should add to 1");
		 * 
		 */

		// Initialize Thread Pooling Thread System?
		threadFactory = Executors.defaultThreadFactory();

		// initialize message manager
		////CJournal.Journal(Main.class, "Initializing message manager");
		// MessageManager messageManager = new MessageManager();

		////messageManager.start();

		// send bootstrap message
		CJournal.Journal(Main.class, "Testing messanger: sending bootstrapping message to messagemanager");
		Message boot_strap_message = new Message();
		boot_strap_message.mflag = EEventMachine.EM_BOOTSTRAP;
		messageManager.EnqueueMessage(boot_strap_message);

		// initializing Scene Graph (need to perform a test, declared above)
		/*
		 * CJournal.Journal(Main.class, "Testing Scene Graph"); SceneGraphNode sgn = new
		 * SceneGraphNode(); SceneGraphManager.add(sgn, SceneGraphManager.root);
		 */
		////sceneGraph.start();

		// initialziing inspector (have to rewrite)

		// initializing inspector manager (have to rewrite)

		// initializing user interface (have to rewrite)

		// initializizng web service factory

		CJournal.Journal(Main.class, "Initialzing web service factory...");

		/////webServiceFactory.start();

		// initializing black board

		CJournal.Journal(Main.class, "Initialzing game black board...");

		////gameBlackBoard.start();

		// launching xml reader
		// xmlAdapter.adapt("demo.xml");

		// launch xml reader demo

		GameInitializeService.initializeService();

		// !!!upon launching file, use hotloader to load the resources - use
		// XMLSceneLoader to get objects and add to scenegraph
		// load xml hexagon, start spawning position
		// load fringe using hotloader

		// initializing hot loader

		//CJournal.Journal(Main.class, "Initialzing hot loader...");

		//CHotLoader.InitHotLoader();

		//GameMapManager.LoadIndices();

		// initailizing input handler (have to rewrite)

		// Dumping Scene Graph Info
		CJournal.Journal(Main.class, "Dumping scene graph output (loaded from XMLAdapter)");
		SceneGraphManager.output();

		/// starting event manager
		Thread t1 = new Thread(eventManager);
		t1.start();

		// starting scheduler
		//Thread t2 = new Thread(scheduler);
		//t2.start();

		/// running publish manager
		////publishManager.start();

		/// initializing task manager
		////taskManager.start();

		// Launch profiler
		// Profiler.ProfileInit();
		;

		CProfiler.ProfileEnd("Main Merged");

		JournalManager.JournalEntry(MainMerged.class, "main", "Preparing Game Loop");

		JournalManager.endJournal();
		JournalManager.JournalToFile();
		
		
		
		// 2. Game Logic Init
		gameLogic.run();


		
		// testing main game loop
		CJournal.Journal(Main.class, "Testing main game loop");
		Loop loop = new Loop(); // hand over to game loop
		loop.start();

		JournalManager.JournalEntry(MainMerged.class, "main", "Preparing user interface");

		//shell thread
	
		
				// runThrough.run();

		// test bloom filter

		TestBloomFilter.testBloomFilter(5, 7, 8);

		//ui.begin();

		
		//CubeObject cube = new CubeObject();
		//Renderer renderer = new Renderer(true, true);
		//renderer.pushData(cube);
		//renderer.copyIntoBuffers(cube);
		//renderer.main(null);
		
		
		Thread s = new Thread(shell);
		s.start();
		
		
		

		return;
	}
	

[Campbell Ritchie]

How many Threads have you got? Why?
That code is difficult to read because so much of it is commented out. Please remove the commented out code and the unnecessary whilespace.

[Lakshman Arun]

You can capture JFR of the application, it will shed more light in to which part of code is causing the contention, what are the threaddumps, is there any issues with memory/cpu utilisation etc.

[Ted Gress]

Here, comment free

public class MainMerged {

	// The role of this class is to test out all the
	// programmatic systems before graphics are
	// introduced

	public static MessageManager messageManager = new MessageManager();
	public static SceneGraphManager sceneGraph = new SceneGraphManager();
	public static WebServiceFactory webServiceFactory = new WebServiceFactory();
	public static GameBlackboard gameBlackBoard = new GameBlackboard();
	public static XMLAdapter xmlAdapter = new XMLAdapter();
	public static ObjectManager objManager = new ObjectManager();
	public static ThreadFactory threadFactory;
	public static CEventManager eventManager = new CEventManager();
	public static PublishingManager publishManager = new PublishingManager();
	public static CScheduler scheduler = new CScheduler();
	public static CTaskManager taskManager = new CTaskManager();
	// public static Profiler profiler = new Profiler();
	public static DTIClass dtiClass = new DTIClass("Main", null);

	public static OutputLog log = new OutputLog();

	// UI classes
	public static Inspector ins = new Inspector();
	public static InspectorManager insm = new InspectorManager();
	public static Manager manager = new Manager();
	public static UserInterface ui = new UserInterface();
	public static GameLogic gameLogic = new GameLogic();
	static boolean simulate = false; // set to true to run simulation without rasterization
	static RunThrough runThrough = new RunThrough();
	public static InputHandler inputHandler = new InputHandler();
	public static InputManager inputManager = new InputManager();
	public static CClock clock = new CClock();

	public static CProfiler profiler = new CProfiler();

	public static JournalManager journal = new JournalManager();
	
	public static Shell shell = new Shell();
	

	public static void main(String[] args) throws InterruptedException, FileNotFoundException {
		System.out.println("Welcome to NecroTek3D");

		// initialize journaling system
		JournalManager journaling = new JournalManager();
		Thread journalingThread = new Thread(journaling);
		journalingThread.start();

		JournalManager.InitJournal(JournalManager.file);
		JournalManager.beginJournal();


		
		// Launch Profiler, Journal, and Logging Systems
		Thread m = new Thread(profiler);
		m.start();
		CProfiler.ProfileBegin("Main Merged");

		// Launching Journal
		CJournal.Journal(Main.class, "Launching the Journaling ");

		Thread j = new  Thread(journal);
		j.start();
		
		// Initialize scheduling system
		CJournal.Journal(Main.class, "Launching the scheduling system");
		CTimerManager.init();
		CJournal.Journal(Main.class, "Begin Timing. Testing Timer Unit");

		CTimer dummy_timer = CTimerManager.getNewTimer(30, 2);

		Message message = new Message();
		message.mflag = EEventMachine.TEST_EVENT_1;

		CJournal.Journal(Main.class, "Testing messaging system " + message.mflag.toString());
		CJournal.Journal(Main.class, "Set message.mflag to " + message.mflag.toString());

		CJournal.Journal(Main.class, "Testing Task Manager");

		CTask task = new CTask();
		task.message = message;

		CJournal.Journal(Main.class, "Set task message to dummy message");

		CJournal.Journal(Main.class, "Testing Scheduler");

		CScheduler.addToSchedule(task);

		CEvent event = new CEvent();

		CJournal.Journal(Main.class, "Testing Event Manager");
		CJournal.Journal(Main.class, "Created dummy CEvent. Pushing to event manager.");

		CEventManager.push_events(event);

		CJournal.Journal(Main.class, "Testing messanger: sending bootstrapping message to messagemanager");
		Message boot_strap_message = new Message();
		boot_strap_message.mflag = EEventMachine.EM_BOOTSTRAP;
		messageManager.EnqueueMessage(boot_strap_message);

		CJournal.Journal(Main.class, "Initialzing web service factory...");

		CJournal.Journal(Main.class, "Initialzing game black board...");

		GameInitializeService.initializeService();


		// Dumping Scene Graph Info
		CJournal.Journal(Main.class, "Dumping scene graph output (loaded from XMLAdapter)");
		SceneGraphManager.output();

		Thread t1 = new Thread(eventManager);
		t1.start();
		CProfiler.ProfileEnd("Main Merged");

		JournalManager.JournalEntry(MainMerged.class, "main", "Preparing Game Loop");

		JournalManager.endJournal();
		JournalManager.JournalToFile();
		
		
		
		gameLogic.run();


		
		CJournal.Journal(Main.class, "Testing main game loop");
		Loop loop = new Loop(); // hand over to game loop
		loop.start();

		JournalManager.JournalEntry(MainMerged.class, "main", "Preparing user interface");

		TestBloomFilter.testBloomFilter(5, 7, 8);

	
		Thread s = new Thread(shell);
		s.start();
		
		

		return;
	}

[Norm Radder]

Can you add print statements to track where the code is executing?  The print out should show where the execution flow is going and what the values of key variables are as they are used.
For example if there is a tight loop that is running forever, the print outs inside the loop will go forever.

[Ted Gress]

As I thought, this code seems to be the bottleneck. Is there a way I can optimize it?


MainMerged.java (entry poitn)

//initializing clock system
		JournalManager.JournalEntry(MainMerged.class, "main", "Launching clock timer thread");
		Thread c = new Thread(clock);
		c.start();

		// Initialize scheduling system
		////CJournal.Journal(Main.class, "Launching the scheduling system");
		CTimerManager.init();
		CJournal.Journal(Main.class, "Begin Timing. Testing Timer Unit");

		// Initialize a dummy timer
		CTimer dummy_timer = CTimerManager.getNewTimer(30, 2);

CClock.java

public class CClock extends Thread {

	
	
	//Internal time values
	//update all timers dependent on the clock	//gets updated time from timesource
	//updates internal time values
	//update all timers dependent on the clock
	
	final double max_frame_rate = 10;
	double frame_rate = 0;
	
	@Override
	public void run() {
		// TODO Auto-generated method stub
		
		
		
		while (true)
		{
		
		
			double time_cum = timeStep - timeStepLast;
			if (time_cum > max_frame_rate)
			{
				//surpassed the frame rate
				//fire a frame event
				Message message = new Message();
			//	actions that occur at every frame
				message.mflag = EEventMachine.EM_FRAME_TICK;
				//MessageManager.EnqueueMessage(message);
				CTask task = new CTask();
				task.message = message;
				MainMerged.scheduler.addToSchedule(task);
			}
			else
			{
				//actions that occur at every tick
				Message message = new Message();
				message.mflag = EEventMachine.EM_CLOCK_TICK;
				CTask task = new CTask();
				task.message = message;
				MainMerged.scheduler.addToSchedule(task);
				//MessageManager.EnqueueMessage(message);
			}
			
			for (int i=0;i<CScheduler.priorityTaskList.size(); i++)
			{
				//scheduled for messages for events that are
				//not top priority
				Message temp_message =new  Message();
				temp_message.mflag = EEventMachine.EM_LOW_PRIORIATY;
				CTask task = new CTask();
				task.message= temp_message;
				MainMerged.scheduler.addToSchedule(task);
			}
			if (time_cum < max_frame_rate)
			{
				//send to scheduler. we are lagging
				Message temp_message = new Message();
				temp_message.mflag = EEventMachine.EM_LAGGING;
				CTask task = new CTask();
				task.message = temp_message;
				MainMerged.scheduler.addToSchedule(task);
			}
		}
				
		
	}

	public static double timeStep = 0;
	public static double timeStepLast = 0;
	
	
	
	
	public static void FrameStep()
	{
		timeStepLast = timeStep;
		timeStep = System.nanoTime(); 
		
		
	}
	
	public void tick()
	{
		
	}
	
	


}

and Timer Manager

import java.util.Date;
import java.util.Timer;
import java.util.TimerTask;
import java.util.Vector;

import Journaling.CJournal;
import SchedulingManager.UniversalStateMachine;

//manages time
//returns time created, time step, tick tick, etc.
//for example, can create timers using this class
//like in game maker, to initiate an event after x amount of ticks

//Internal time values
	//update all timers dependent on the clock	//gets updated time from timesource
	//updates internal time values (CCLock)
	//update all timers dependent on the clock

public class CTimerManager  implements Runnable
{
	static Vector<CTimer> listOfTimers = new Vector<CTimer>();
	
	public static void init()
	{
		CJournal.Journal(CTimerManager.class, "Created a CTimerManager Object");
		
	}
	
	public static CTimer getNewTimer(long frames_per_tick,long ticks_per_second) 
	{
		//CJournal.Journal(CTimerManager.class, "Creating a CTimer Object");
		
		CTimer timer_obj = new CTimer();
		
		timer_obj.frames_per_tick = frames_per_tick;
		
		timer_obj.ticks_per_second = ticks_per_second;        //set priority. Gets 2 runs for every run
		
		Timer timer = new Timer();

		// scheduling the task
		
		TimerTask tasknew = new UniversalStateMachine();
		
		timer.scheduleAtFixedRate(tasknew, new Date(), 100);


		/* timer_obj.t.schedule(new CTimer(), 0, callback_object_type); */ 
		//moveCJournal.Journal(CTimerManager.class, "Timer creation success. Adding CTimer object to internal list Of Timers");
		
		listOfTimers.addElement(timer_obj);
		
		
		return timer_obj;
		
	}

	@Override
	public void run() {
		// TODO Auto-generated method stub
		
	}
		


	
}

I'm also getting this exception in Loop.java:

java.io.IOException: Stream closed
	at java.base/java.io.BufferedWriter.ensureOpen(Unknown Source)
	at java.base/java.io.BufferedWriter.write(Unknown Source)
	at java.base/java.io.Writer.write(Unknown Source)
	at java.base/java.io.Writer.append(Unknown Source)
	at RealTimeProfiler.CProfiler.WriteStackContents(CProfiler.java:299)
	at RealTimeProfiler.CProfiler.run(CProfiler.java:327)
	at java.base/java.lang.Thread.run(Unknown Source)

Loop.java:

public class Loop extends Thread {

	static RenderGL renderGL = new RenderGL();
	

	boolean loop_running = false;
	
	@Override
	public  void run() 
	{
		//CJournal.Journal(Loop.class, "Loop Thread is running.");
		//fire initialize event
		
		//fire erase object event
		//
		while(true)
		{
		
			JournalManager.beginJournal();
			CClock.FrameStep(); //begin frame counter for clock

			
				JournalManager.JournalEntry(Loop.class, "run()", "Start of while(true)");
			
			CProfiler.beginFrame = System.nanoTime();
				CProfiler.ProfileBegin("Main Loop");
				
				
					JournalManager.JournalEntry(Loop.class, "run", "Main Game Loop is Running");
				
				loop_running = true;
				
				CProfiler.ProfileEnd("Main Loop");

				CProfiler.endFrame = System.nanoTime();
				
				CProfiler.Calculate();
				CProfiler.Percentages();
				
				JournalManager.JournalEntry(Loop.class, "run()", "Test Journal Manager");
				
				
				//Shell.Shell();
				
				
				
				//end profiler frame time
			//}
			
			
			
			JournalManager.endJournal();
			
			
		
			// this is java ide code -> Main.gameLogic.run();
			//each of the following run in a loop on t heir own thread
			//renderGL.run();
			//get local input
			//get remote input
			//animation
			//collsion
			//render
			//
		}
		
		
		
	}
	
	
}

[Ted Gress]

Is there a way I can write a new line into the output when using printwriter. Can I do a simple
\n?

[Norm Radder]

As I thought, this code seems to be the bottleneck

How have you determined that?

write a new line into the output when using printwriter.

See the API doc for the PrintWriter class.  It has several methods that will write a new line.

[Ted Gress]

Ok. I'll look up append. Nothing showed up on the intellisense so I assumed (my fault) that there wasn't one.


As far as the bottleneck goes, when I uncommented that code the game engine worked fine. Well it didn't hang up anyway. As sooon as I uncommented it, it started locking up again. I'm not sure how to fix the problem however.

[Ted Gress]

As for PrintWriter, I just looked it up in the API and the writer function doesn't have any newline . I'm looking for something like println. Does that exist on the file side?

[Norm Radder]

What API doc did you look in?  Here are a few lines for the PrintWriter class:

void println()
Terminates the current line by writing the line separator string.
void println(boolean x)
Prints a boolean value and then terminates the line.
void println(char x)
Prints a character and then terminates the line.
void println(char[] x)
Prints an array of characters and then terminates the line.
void println(double x)
Prints a double-precision floating-point number and then terminates the line.
void println(float x)
Prints a floating-point number and then terminates the line.
void println(int x)
Prints an integer and then terminates the line.

when I uncommented that code

What lines in what class are you talking about?

[Ted Gress]

For the above mentioned Main class:

public class MainMerged {

// The role of this class is to test out all the
// programmatic systems before graphics are
// introduced

public static MessageManager messageManager = new MessageManager();
public static SceneGraphManager sceneGraph = new SceneGraphManager();
public static WebServiceFactory webServiceFactory = new WebServiceFactory();
public static GameBlackboard gameBlackBoard = new GameBlackboard();
public static XMLAdapter xmlAdapter = new XMLAdapter();
public static ObjectManager objManager = new ObjectManager();
public static ThreadFactory threadFactory;
public static CEventManager eventManager = new CEventManager();
public static PublishingManager publishManager = new PublishingManager();
public static CScheduler scheduler = new CScheduler();
public static CTaskManager taskManager = new CTaskManager();
//public static Profiler profiler = new Profiler();
public static DTIClass dtiClass = new DTIClass("Main", null);

public static OutputLog log = new OutputLog();

// UI classes
public static Inspector ins = new Inspector();
public static InspectorManager insm = new InspectorManager();
public static Manager manager = new Manager();
public static UserInterface ui = new UserInterface();
public static GameLogic gameLogic = new GameLogic();
static boolean simulate = false; // set to true to run simulation without rasterization
static RunThrough runThrough = new RunThrough();
public static InputHandler inputHandler = new InputHandler();
public static InputManager inputManager = new InputManager();

//

// clock object
public static CClock clock = new CClock();

public static CProfiler profiler = new CProfiler();

public static JournalManager journal = new JournalManager();

public static Shell shell = new Shell();


public static void main(String[] args) throws InterruptedException, FileNotFoundException {
System.out.println("Welcome to NecroTek3D");

// initialize journaling system
JournalManager journaling = new JournalManager();
Thread journalingThread = new Thread(journaling);
journalingThread.start();

CJournal.Journal(MainMerged.class, "Testing CJournal");

JournalManager.beginJournal();

////Thread t0 = new Thread(log);
////t0.start();


// Launch Profiler, Journal, and Logging Systems
Thread m = new Thread(profiler);
m.start();
CProfiler.ProfileBegin("Main Merged");

// Launching Journal
CJournal.Journal(Main.class, "Launching the Journaling ");

Thread j = new  Thread(journal);
j.start();

//initializing clock system
////JournalManager.JournalEntry(MainMerged.class, "main", "Launching clock timer thread");
////Thread c = new Thread(clock);
////c.start();

// Initialize scheduling system
////CJournal.Journal(Main.class, "Launching the scheduling system");
////CTimerManager.init();
///CJournal.Journal(Main.class, "Begin Timing. Testing Timer Unit");

// Initialize a dummy timer
////CTimer dummy_timer = CTimerManager.getNewTimer(30, 2);

// Create a test message

Message message = new Message();
message.mflag = EEventMachine.TEST_EVENT_1;

CJournal.Journal(Main.class, "Testing messaging system " + message.mflag.toString());
CJournal.Journal(Main.class, "Set message.mflag to " + message.mflag.toString());

CJournal.Journal(Main.class, "Testing Task Manager");

CTask task = new CTask();
task.message = message;

CJournal.Journal(Main.class, "Set task message to dummy message");

CJournal.Journal(Main.class, "Testing Scheduler");

CScheduler.addToSchedule(task);

CEvent event = new CEvent();

CJournal.Journal(Main.class, "Testing Event Manager");
CJournal.Journal(Main.class, "Created dummy CEvent. Pushing to event manager.");

CEventManager.push_events(event);

// Initialize memory system

/*
* CJournal.Journal(Main.class, "Testing Memory System");
*
* CJournal.Journal(Main.class, "Establishing memory pool");
*
* objManager.InitPool();
*
* CJournal.Journal(Main.class, "Attempting memory request: Dummy string object"
* );
*
* String stringObject = (String) ObjectManager.requestObjectOfClass(String);
*
* //System.out.println(stringObject);
*
* CJournal.Journal(Main.class,
* "Attempting integer memory request. Dummy integer objects");
*
* Integer intObject = (Integer) ObjectManager.requestObjectOfClass();
*
* //test formula
*
* int a = 0; int b = 1; int c = intObject.intValue(); c = a + b;
*
* CJournal.Journal(Main.class, "Dumy keycode for memory. Value is " + c +
* "should add to 1");
*
*/

// Initialize Thread Pooling Thread System?
////threadFactory = Executors.defaultThreadFactory();

// initialize message manager
CJournal.Journal(Main.class, "Initializing message manager");
MessageManager messageManager = new MessageManager();

messageManager.start();

// send bootstrap message
CJournal.Journal(Main.class, "Testing messanger: sending bootstrapping message to messagemanager");
Message boot_strap_message = new Message();
boot_strap_message.mflag = EEventMachine.EM_BOOTSTRAP;
messageManager.EnqueueMessage(boot_strap_message);

// initializing Scene Graph (need to perform a test, declared above)
/*
* CJournal.Journal(Main.class, "Testing Scene Graph"); SceneGraphNode sgn = new
* SceneGraphNode(); SceneGraphManager.add(sgn, SceneGraphManager.root);
*/
sceneGraph.start();

// initialziing inspector (have to rewrite)

// initializing inspector manager (have to rewrite)

// initializing user interface (have to rewrite)

// initializizng web service factory

CJournal.Journal(Main.class, "Initialzing web service factory...");

webServiceFactory.start();

// initializing black board

CJournal.Journal(Main.class, "Initialzing game black board...");

gameBlackBoard.start();

// launching xml reader
xmlAdapter.adapt("demo.xml");

// launch xml reader demo

GameInitializeService.initializeService();

// !!!upon launching file, use hotloader to load the resources - use
// XMLSceneLoader to get objects and add to scenegraph
// load xml hexagon, start spawning position
// load fringe using hotloader

// initializing hot loader

//CJournal.Journal(Main.class, "Initialzing hot loader...");

/*********Initialize Hot Loader todo***********/
//CHotLoader.InitHotLoader();

//GameMapManager.LoadIndices();

// initailizing input handler (have to rewrite)

// Dumping Scene Graph Info
////CJournal.Journal(Main.class, "Dumping scene graph output (loaded from XMLAdapter)");
////SceneGraphManager.output();

/// starting event manager
Thread t1 = new Thread(eventManager);
t1.start();

// starting scheduler
Thread t2 = new Thread(scheduler);
t2.start();

/// running publish manager
publishManager.start();

/// initializing task manager
taskManager.start();

// Launch profiler
// Profiler.ProfileInit();


CProfiler.ProfileEnd("Main Merged");

JournalManager.JournalEntry(MainMerged.class, "main", "Preparing Game Loop");

JournalManager.endJournal();
JournalManager.JournalToFile();



// 2. Game Logic Init
//gameLogic.run();



// testing main game loop
////CJournal.Journal(Main.class, "Testing main game loop");
////Loop loop = new Loop(); // hand over to game loop
////loop.start();

////JournalManager.JournalEntry(MainMerged.class, "main", "Preparing user interface");

//shell thread


// runThrough.run();

// test bloom filter

TestBloomFilter.testBloomFilter(5, 7, 8);


//The method below works - don't touch it
//ui.begin();
////MainMerged mainMerged = new MainMerged();
////mainMerged.backuprun();

//CubeObject cube = new CubeObject();
//CubeObject2 cube2= new CubeObject2();
//Renderer renderer = new Renderer(true, true);
//renderer.pushData(cube, cube2);
////renderer.copyIntoBuffers(cube);
//renderer.main(null);


////Thread s = new Thread(shell);
////s.start();




return;
}

[Ted Gress]

Sorry, I forgot the  code block

public class MainMerged {

	// The role of this class is to test out all the
	// programmatic systems before graphics are
	// introduced

	public static MessageManager messageManager = new MessageManager();
	public static SceneGraphManager sceneGraph = new SceneGraphManager();
	public static WebServiceFactory webServiceFactory = new WebServiceFactory();
	public static GameBlackboard gameBlackBoard = new GameBlackboard();
	public static XMLAdapter xmlAdapter = new XMLAdapter();
	public static ObjectManager objManager = new ObjectManager();
	public static ThreadFactory threadFactory;
	public static CEventManager eventManager = new CEventManager();
	public static PublishingManager publishManager = new PublishingManager();
	public static CScheduler scheduler = new CScheduler();
	public static CTaskManager taskManager = new CTaskManager();
	//public static Profiler profiler = new Profiler();
	public static DTIClass dtiClass = new DTIClass("Main", null);

	public static OutputLog log = new OutputLog();

	// UI classes
	public static Inspector ins = new Inspector();
	public static InspectorManager insm = new InspectorManager();
	public static Manager manager = new Manager();
	public static UserInterface ui = new UserInterface();
	public static GameLogic gameLogic = new GameLogic();
	static boolean simulate = false; // set to true to run simulation without rasterization
	static RunThrough runThrough = new RunThrough();
	public static InputHandler inputHandler = new InputHandler();
	public static InputManager inputManager = new InputManager();

	//

	// clock object
	public static CClock clock = new CClock();

	public static CProfiler profiler = new CProfiler();

	public static JournalManager journal = new JournalManager();
	
	public static Shell shell = new Shell();
	

	public static void main(String[] args) throws InterruptedException, FileNotFoundException {
		System.out.println("Welcome to NecroTek3D");

		// initialize journaling system
		JournalManager journaling = new JournalManager();
		Thread journalingThread = new Thread(journaling);
		journalingThread.start();

		CJournal.Journal(MainMerged.class, "Testing CJournal");
		
		JournalManager.beginJournal();

		////Thread t0 = new Thread(log);
		////t0.start();

		
		// Launch Profiler, Journal, and Logging Systems
		Thread m = new Thread(profiler);
		m.start();
		CProfiler.ProfileBegin("Main Merged");

		// Launching Journal
		CJournal.Journal(Main.class, "Launching the Journaling ");

		Thread j = new  Thread(journal);
		j.start();
		
		//initializing clock system
		////JournalManager.JournalEntry(MainMerged.class, "main", "Launching clock timer thread");
		////Thread c = new Thread(clock);
		////c.start();

		// Initialize scheduling system
		////CJournal.Journal(Main.class, "Launching the scheduling system");
		////CTimerManager.init();
		///CJournal.Journal(Main.class, "Begin Timing. Testing Timer Unit");

		// Initialize a dummy timer
		////CTimer dummy_timer = CTimerManager.getNewTimer(30, 2);

		// Create a test message

		Message message = new Message();
		message.mflag = EEventMachine.TEST_EVENT_1;

		CJournal.Journal(Main.class, "Testing messaging system " + message.mflag.toString());
		CJournal.Journal(Main.class, "Set message.mflag to " + message.mflag.toString());

		CJournal.Journal(Main.class, "Testing Task Manager");

		CTask task = new CTask();
		task.message = message;

		CJournal.Journal(Main.class, "Set task message to dummy message");

		CJournal.Journal(Main.class, "Testing Scheduler");

		CScheduler.addToSchedule(task);

		CEvent event = new CEvent();

		CJournal.Journal(Main.class, "Testing Event Manager");
		CJournal.Journal(Main.class, "Created dummy CEvent. Pushing to event manager.");

		CEventManager.push_events(event);

		// Initialize memory system

		/*
		 * CJournal.Journal(Main.class, "Testing Memory System");
		 * 
		 * CJournal.Journal(Main.class, "Establishing memory pool");
		 * 
		 * objManager.InitPool();
		 * 
		 * CJournal.Journal(Main.class, "Attempting memory request: Dummy string object"
		 * );
		 * 
		 * String stringObject = (String) ObjectManager.requestObjectOfClass(String);
		 * 
		 * //System.out.println(stringObject);
		 * 
		 * CJournal.Journal(Main.class,
		 * "Attempting integer memory request. Dummy integer objects");
		 * 
		 * Integer intObject = (Integer) ObjectManager.requestObjectOfClass();
		 * 
		 * //test formula
		 * 
		 * int a = 0; int b = 1; int c = intObject.intValue(); c = a + b;
		 * 
		 * CJournal.Journal(Main.class, "Dumy keycode for memory. Value is " + c +
		 * "should add to 1");
		 * 
		 */

		// Initialize Thread Pooling Thread System?
		////threadFactory = Executors.defaultThreadFactory();

		// initialize message manager
		CJournal.Journal(Main.class, "Initializing message manager");
		MessageManager messageManager = new MessageManager();

		messageManager.start();

		// send bootstrap message
		CJournal.Journal(Main.class, "Testing messanger: sending bootstrapping message to messagemanager");
		Message boot_strap_message = new Message();
		boot_strap_message.mflag = EEventMachine.EM_BOOTSTRAP;
		messageManager.EnqueueMessage(boot_strap_message);

		// initializing Scene Graph (need to perform a test, declared above)
		/*
		 * CJournal.Journal(Main.class, "Testing Scene Graph"); SceneGraphNode sgn = new
		 * SceneGraphNode(); SceneGraphManager.add(sgn, SceneGraphManager.root);
		 */
		sceneGraph.start();

		// initialziing inspector (have to rewrite)

		// initializing inspector manager (have to rewrite)

		// initializing user interface (have to rewrite)

		// initializizng web service factory

		CJournal.Journal(Main.class, "Initialzing web service factory...");

		webServiceFactory.start();

		// initializing black board

		CJournal.Journal(Main.class, "Initialzing game black board...");

		gameBlackBoard.start();

		// launching xml reader
		xmlAdapter.adapt("demo.xml");

		// launch xml reader demo

		GameInitializeService.initializeService();

		// !!!upon launching file, use hotloader to load the resources - use
		// XMLSceneLoader to get objects and add to scenegraph
		// load xml hexagon, start spawning position
		// load fringe using hotloader

		// initializing hot loader

		//CJournal.Journal(Main.class, "Initialzing hot loader...");

		/*********Initialize Hot Loader todo***********/
		//CHotLoader.InitHotLoader();

		//GameMapManager.LoadIndices();

		// initailizing input handler (have to rewrite)

		// Dumping Scene Graph Info
		////CJournal.Journal(Main.class, "Dumping scene graph output (loaded from XMLAdapter)");
		////SceneGraphManager.output();

		/// starting event manager
		Thread t1 = new Thread(eventManager);
		t1.start();

		// starting scheduler
		Thread t2 = new Thread(scheduler);
		t2.start();

		/// running publish manager
		publishManager.start();

		/// initializing task manager
		taskManager.start();

		// Launch profiler
		// Profiler.ProfileInit();
		

		CProfiler.ProfileEnd("Main Merged");

		JournalManager.JournalEntry(MainMerged.class, "main", "Preparing Game Loop");

		JournalManager.endJournal();
		JournalManager.JournalToFile();
		
		
		
		// 2. Game Logic Init
		//gameLogic.run();


		
		// testing main game loop
		////CJournal.Journal(Main.class, "Testing main game loop");
		////Loop loop = new Loop(); // hand over to game loop
		////loop.start();

		////JournalManager.JournalEntry(MainMerged.class, "main", "Preparing user interface");

		//shell thread
	
		
		// runThrough.run();

		// test bloom filter

		TestBloomFilter.testBloomFilter(5, 7, 8);

		
		//The method below works - don't touch it
		//ui.begin();
		////MainMerged mainMerged = new MainMerged();
		////mainMerged.backuprun();
		
		//CubeObject cube = new CubeObject();
		//CubeObject2 cube2= new CubeObject2();
		//Renderer renderer = new Renderer(true, true);
		//renderer.pushData(cube, cube2);
		////renderer.copyIntoBuffers(cube);
		//renderer.main(null);
		
		
		////Thread s = new Thread(shell);
		////s.start();
		
		
		

		return;
	}

[Ted Gress]

I commented out lines 73 through 84 which seemed to be the bottleneck. There may be others.

[Ted Gress]

I commented out lines 73 through 84 which seemed to be the bottleneck. There may be others.

[Ted Gress]

There is a bottleneck on line 221 too where TaskManager thread is started.

[Ted Gress]

There is a bottleneck on line 221 too where TaskManager thread is started.
The main slowdown seems to actually be in my game loop:

public class Loop extends Thread {

	static RenderGL renderGL = new RenderGL();
	

	boolean loop_running = false;
	
	@Override
	public  void run() 
	{
		//CJournal.Journal(Loop.class, "Loop Thread is running.");
		//fire initialize event
		
		//fire erase object event
		//
		while(true)
		{
		
			JournalManager.beginJournal();
			CClock.FrameStep(); //begin frame counter for clock

			
				JournalManager.JournalEntry(Loop.class, "run()", "Start of while(true)");
			
			CProfiler.beginFrame = System.nanoTime();
				CProfiler.ProfileBegin("Main Loop");
				
				
					JournalManager.JournalEntry(Loop.class, "run", "Main Game Loop is Running");
				
				loop_running = true;
				
				CProfiler.ProfileEnd("Main Loop");

				CProfiler.endFrame = System.nanoTime();
				
				CProfiler.Calculate();
				CProfiler.Percentages();
				
				JournalManager.JournalEntry(Loop.class, "run()", "Test Journal Manager");
				
				
				//Shell.Shell();
				
				
				
				//end profiler frame time
			//}
			
			
			
			JournalManager.endJournal();
			
			
		
			// this is java ide code -> Main.gameLogic.run();
			//each of the following run in a loop on t heir own thread
			//renderGL.run();
			//get local input
			//get remote input
			//animation
			//collsion
			//render
			//
		}
		
		
		
	}
	

[Ted Gress]

*bump*

Anybody know anything about using JFR for testing?

[Junilu Lacar]

Are you referring to Java Flight Recorder? https://docs.oracle.com/javacomponents/jmc-5-4/jfr-runtime-guide/about.htm#JFRUH170

[Junilu Lacar]

Ted Gress wrote:I use a lot of static classes and threads and I think that's part of it but I'm not convinced that's the only problem lurking.

The biggest, most obvious problem with that code is that it's a Big Ball of Mud.  There are almost always other problems lurking in BBoMs.