Class unloading (Was: Heap fragmentation (Was: Debugging "Leaks" With Boehm-GC))

[David Daney]

Tom Tromey wrote:
>>>>>>"Martin" == Martin Egholm Nielsen <martin@egholm-nielsen.dk> writes:
> 
> 
> [ class unloading ]
> Martin> Since it's in the JLS it may be standard GCJ behaviour?
> 
> We don't really implement this yet.  It might work for interpreted
> classes, I'm not sure.
> 
> We haven't made this work for compiled classes yet.  Ideally we would
> unmap shared libraries when all the classes from that .so have been
> collected.

You cannot GC the Classes until the ClassLoader is unreferenced (then 
you GC them all).

You would not unmap the .so until all ClassLoaders using it were GCed.

Probably this means doing some sort of reference counting external to 
,but in coordination with, the GC.

David Daney