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  [HELP] Memory Leak (Simple Game)  (Read 2374 times)
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Offline Canownueasy

Junior Newbie




There's no place like localhost


« Posted 2012-02-19 09:22:33 »

I am getting a huge memory leak in my very simple game.

I have tried profiling the VM, and apparently there are many, many integer arrays (int[])

Here is the source, please take a look, it is a simple game: http://dl.dropbox.com/u/26438996/Block%20Evader.zip
Offline jammas615

Junior Duke


Projects: 1



« Reply #1 - Posted 2012-02-19 09:32:26 »



...Oh my God. :0

Where are these int arrays?

Offline Canownueasy

Junior Newbie




There's no place like localhost


« Reply #2 - Posted 2012-02-19 09:37:23 »



...Oh my God. :0

Where are these int arrays?
I have no idea. Cry
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Offline jammas615

Junior Duke


Projects: 1



« Reply #3 - Posted 2012-02-19 09:48:04 »

Debugging and stepping through your code can be helpful and good to get used to.

If i was you, i would take a look at this section:
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while (true) {
            Enemy enemy = world.getEnemies().get(Misc.random(world.getEnemies().size() - 1));
            Direction dir = Direction.values()[Misc.random(Direction.values().length-1)];
            for (int i = 0; i < 15; i++) {
               enemy.move(dir);
               Thread.sleep(10);
            }
            Thread.sleep(10);

         }

I'm retarded, don't worry. :/

Offline Canownueasy

Junior Newbie




There's no place like localhost


« Reply #4 - Posted 2012-02-19 09:50:24 »

I do not think so. If I comment that out, I get the same results.

I figured out what's hogging the memory: DataBufferInt

Here is some info I found: http://www.symphonious.net/2007/04/26/japplet-memory-leaks/
Offline Stranger

Senior Duke


Medals: 7



« Reply #5 - Posted 2012-02-19 11:17:37 »

I think there's no need to create image on every paint.
Create it once and then fillrect with background color if any.

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@Override
public void paint(Graphics g) {
    dbImage = createImage(getWidth(), getHeight());
    paintWorld(dbImage.getGraphics());
    g.drawImage(dbImage, 0, 0, this);
    repaint();
}

Anton
Offline ra4king

JGO Kernel


Medals: 353
Projects: 3
Exp: 5 years


I'm the King!


« Reply #6 - Posted 2012-02-19 18:31:22 »

Yup your problem is the paint method in your Applet class. You are creating a new Image every frame! Create it once and then reuse it.

Also, you shouldn't be calling repaint() every frame, instead you should call it in your game loop.

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