memory defragmentation

[Ren-Song Ko]

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. how many data structures 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
subsystem.

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.

Thanks, 
======================================================
Ren-Song Ko, Department of Computer Science, MSU
korenson at cps.msu.edu, http://www.cps.msu.edu/~korenson

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