about WriteBarrier

> I would like to take a look to this. In which primitives you need to send
> #yourself for example? This is because otherwise the VM will fail / crash
> because it expects the parameters of a primitive to be of a certain type
> rather than a proxy ?

Right, this is the problem that has been solved with the new extension.

> Which are those subclases you mention that override the primitive methods?

The ones that WriteBarrier dynamically instantiates for each class of
object added to the WB.  Please look at the WriteBarrier package (it's
a small, standalone package) and it will become crystal clear.

> Thanks and congrats for the release.

Thanks,
 Chris

Hm, not sure what you're seeing..    #canUncompact is implemented only
Behavior as:

canUncompact
       ^ (Smalltalk isRunningCog or: [ Smalltalk isRunningCogit ])
               ifTrue: [ (Smalltalk compactClassesArray includes: self) not ]
               ifFalse: [ true ]

Sounds like you are looking at the wrong version of WriteBarrier.  The
correct one is WriteBarrier-cmm.35.

 - Chris

On Sat, Dec 10, 2011 at 5:38 PM, Mariano Martinez Peck
<[hidden email]> wrote:
> Thanks now I understand why you asked about compact classes. However, you
> only implement canUncompact  ^ false
> in CompiledMethod and ContextPart, even if with Cog there are more classes
> that you *cannot* uncompact.
>
> Cheers
>
> On Sat, Dec 10, 2011 at 5:37 PM, Chris Muller <[hidden email]> wrote:
>>
>> > I would like to take a look to this. In which primitives you need to
>> > send
>> > #yourself for example? This is because otherwise the VM will fail /
>> > crash
>> > because it expects the parameters of a primitive to be of a certain type
>> > rather than a proxy ?
>>
>> Right, this is the problem that has been solved with the new extension.
>>
>> > Which are those subclases you mention that override the primitive
>> > methods?
>>
>> The ones that WriteBarrier dynamically instantiates for each class of
>> object added to the WB.  Please look at the WriteBarrier package (it's
>> a small, standalone package) and it will become crystal clear.
>>
>> > Thanks and congrats for the release.
>>
>> Thanks,
>>  Chris
>
>
>
>
> --
> Mariano
> http://marianopeck.wordpress.com
>