Memory leakage after copy/paste and close an image

[grofaty]

Pinta-1.5-preview-20121103 on Windows XP:
1. New image 2000 x 2000.
2. Paint Bucket and click on canvas to fill it.
3. CTRL+A to mark whole canvas.
4. CTRL+C to copy an image.
5. Open Windows Task Manager to monitor memory consumption. Remember memory consumption.
6. CTRL+V to paste an image.
7. Repeat previous step for 20 times (I know stupid thing to paste the same image again and again).
8. CTLR+W to close an image.
9. Now when image is closed I expect to free up a memory to the level of step 5. But memory is not released in the same amount. So there is probably some memory leakage.

See attached image.

[Cameron White (cameronwhite91)]

This only seems to happen in certain situations - for example, doing several paintbrush actions on a 10000x10000 image doesn't result in this issue.

[Cameron White (cameronwhite91)]

I fixed some of the memory usage issues: https://github.com/PintaProject/Pinta/commit/fc971db034a0fa1cac4e32a55c726e4b703f24db

There is still some unreleased memory that I haven't been able to track down yet, but the memory usage is significantly better now.

[grofaty (grofaty)]

Retested using master on Windows XP and it looks better (comparing to #1). So it looks some memory is getting free after this actions.

[grofaty (grofaty)]

I suggest to postpone this bug after 1.5. It's going to effect only computer with low spec and it will effect them less, because some memory leakage was fixed.

[Cameron White (cameronwhite91)]

Yeah, I'm ok with that, since a lot of the memory usage has been fixed.

I'm unassigning myself, in case anyone else feels like working on this.

[Cameron White (cameronwhite91)]

I don't think this is a release blocker for v1.7.

[grofaty (grofaty)]

I agree we can postpone this problem.