Re: [Squeak-VMdev] Versiojn 4 changes

[Ian P. <ian...@in...>]

On 08 Apr 2004, at 15:14, Andreas Raab wrote:

> I take that as a clear "yes", right?! ;-)

Absolutely.  The two GC things I'd most like to see are:

- being able to lock-down objects (so they don't move, allocated 
outside the heap, preferably via a generalised mechanism that isn't 
restricted just to variable words -- our recent exchange about LIFO 
context allocation, etc...)

- a way to reserve a certain guaranteed amount of heap memory that will 
never be allocated during normal instantiation, but remains available 
for (e.g.) primitives (LargeInts, whatever) and other non-primitive 
internal mechanisms.  (In addition to context flushing, there are 
things like Message creation for send/return exceptions that could 
benefit from this.  Orthogonal example: Unix filesystem partitions 
reach 100% capacity for users before they're really full -- the 
additional space remains available to root processes.)

Cheers,
Ian