[Bug awt/27917] New: Massive memory leak in Graphics2D image operations

[hendrich at informatik dot uni-hamburg dot de]

My image viewer application shows a massive memory leak when running on jamvm
with classpath cvs (2006.06.06) - about 10..30 MBytes of memory per
medium-sized image. 

Goto http://tams-www.informatik.uni-hamburg.de/personal/hendrich/niffler/
and download niffler.jar and optionally the sources. Run the jar and specify
the name of a directory with lots of images in it:

jamvm -jar niffler.jar /home/hendrich/images/

The app should start up now (note that it also might just crash immediately
after the first repaint; jamvm just hangs) and displays the first image.

Move the mouse over the image, activate the popup menu and deselect 
popup > thumbnails > enable thumbnails, because creating the thumbnails 
may take a long time.

Open the popup menu and select popup > slideshow > start slideshow (linear)
or type "F9". Optionally, type "i" or select popup > slideshow > half interval
to reduce the delay between images.

Observe memory consumption...



I have no simple testcase yet, because some image operations seem to happen
asynchronously. I suspect that the loaded images are never garbage-collected.
(It also might be the scaled image drawImage(x y w h x y w h), but this seems
to work in my circuit simulator.)


-- 
           Summary: Massive memory leak in Graphics2D image operations
           Product: classpath
           Version: 0.92
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: awt
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: hendrich at informatik dot uni-hamburg dot de


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27917