[KimDaBa] Reducing memory consumption
Jesper K. Pedersen
blackie at blackie.dk
Sun Jan 16 19:29:26 GMT 2005
On Sunday 16 January 2005 20:27, Robert L Krawitz wrote:
| From: "Jesper K. Pedersen" <blackie at blackie.dk>
| Date: Sun, 16 Jan 2005 20:20:51 +0100
| Cc: kimdaba at klaralvdalens-datakonsult.se
| On Sunday 16 January 2005 20:17, Robert L Krawitz wrote:
| | From: "Jesper K. Pedersen" <blackie at blackie.dk>
| | Date: Sun, 16 Jan 2005 20:09:30 +0100
| | I'm afraid that I can't apply this patch. I need to detach
| | otherwise there might be a race condition between the two threads
| | for the reference counter for the QImage. I changed the code so it
| | will detach right after putting the image in the ImageEvent, this
| | will hopefully resolve the issue, and will ensure that the image is
| | not copied an extra time when taken out of the event in the GUI
| | code.
| | So that's still going to force a copy? That's unfortunate, since it's
| | a huge chunk of VM. There's no way to lock the image?
| I'm afraid not. The problem is that the GUI thread and the image
| loading thread might at the same time reduce the reference counter,
| resulting in it being decrecaded one too little.
| It's not possible to lock the operations that might change the
| reference counter?
This is in code that is out of my control.
As I said this will be resolved with Qt4 which are due this spring - perhaps
even before KimDaBa 2.1 is due
Having trouble finding a given image in your collection containing
thousands of images?
http://ktown.kde.org/kimdaba might be the answer.
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