<AWT Dev> Memory leaks due to static references in AWT & Swing
jtulach at netbeans.org
Wed Jul 20 00:36:13 PDT 2011
My name is Jaroslav Tulach and I working on NetBeans. Recently I started to
fight with memory leaks by writing some automated tests to verify that some
sequence of actions does not leave a memory behind.
I think the tests are paying off, we managed to fix many leaks in NetBeans
code. However now we are facing an unsolvable problem: there are some
(temporary) leaks in AWT and Swing code which cause our tests to randomly
We tried to workaround the problem (by opening new unrelated windows, or using
reflection to clean well known references), but so far our solutions are
fragile and the test continue to fail in new, inventive ways (for example
It would be much easier if we could eliminate the (temporary) memory leaks in
AWT/Swing code. I am attaching a patch that uses WeakReference instead of
strong one that would fix one of our failing test.
What it would take to accept my patch? Thanks for your advice and help.
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