overhead of reflection info

Sat Feb 21 04:37:00 GMT 2004

Ah, interesting. Since it is only called in the rare case, could I
just have it assume that every word of the object is a pointer in
order to play it safe?
 - a
"Boehm, Hans" <hans.boehm@hp.com> writes:
> You might want to look at _Jv_MarkObj, which is the backup GC mark routine.
> It can still get called in relatively rare cases in which the compiler
> generated mark descriptor would have been too big to fit. It needs some
> of the reflection data.
>> Hans
>> > -----Original Message-----
> > From: java-owner@gcc.gnu.org 
> > [mailto:java-owner@gcc.gnu.org]On Behalf Of
> > Adam Megacz
> > Sent: Thursday, February 19, 2004 7:52 PM
> > To: java@gcc.gnu.org
> > Subject: overhead of reflection info
> > 
> > 
> > 
> > For future reference, I commented out make_class_data() in class.c,
> > which (if I understand correctly) will inhibit the output of
> > reflection data. My compressed binary size (using the UPX executable
> > compressor on Linux/i86) plummeted from 728kb to 490kb. Roughly 33%
> > smaller. Also, 120kb of that (post-compression) is DWARF2 info,
> > meaning that 370kb should be "possible" with an unwinder specialized
> > to Java that trades away runtime performance for smaller executables.
> > 
> > I think I'm going to see how far I can get with a patch that disables
> > reflection. Getting libgcj to live without it will be a challenge,
> > but I think it can be done.
> > 
> > - a
> > 
>>
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