memory defragmentation

Ren-Song Ko korenson at
Mon Feb 15 12:52:45 PST 1999

At 10:49 AM 2/15/99 -0700, you wrote:
>> Hi,
>> 	I am thinking implementing memory defragmentation for kaffe, since kaffe
>> seems not having this feature. Could anyone suggest a better way to do it,
>> specially on updating memory address after moving blocks?
>I assume you are talking about a mostly copying compacting collector,
>is that correct?

I have not thought about any specific GC algorithm but the complexity of
updating memory reference, i.e. which data structure might be affected when
I move some objects.

>Furthermore, take a look at kaffevm/gcFuncs.c kaffevm/gc.h.  You will need
>to extend the gc interface to communicate information about the locations
>in which pointers to gcable objects are stored between the VM and gc

To be honest, I still have not figure out how memory referencing works in
kaffe. That is, when an object, say A, is accessing the object B's data,
where the object A can retrieve the address of obejct B in terms of kaffe's
data structure? 

Any help is appreciated.


Ren-Song Ko, Department of Computer Science, MSU
korenson at,

!!! Error 3032 - Recursion error. See error 3032. !!!

"There are only two things which are infinite, the
universe and human stupidity,and I'm not really sure
about the universe" Albert Einstein  

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