[Vm-dev] Re: What is exactly the problem when evaluating stuff from Workspace and Cog?

Mariano Martinez Peck marianopeck at gmail.com
Thu Apr 28 12:00:54 UTC 2011


On Thu, Apr 28, 2011 at 1:42 PM, Henrik Sperre Johansen <
henrik.s.johansen at veloxit.no> wrote:

>
>  On 28.04.2011 13:25, Mariano Martinez Peck wrote:
>
>
>
> No one?  and if I need to intercept this messages inside the VM, is there
> another special place than the regular #commonSend ?
>
> Thanks
>
> On Sat, Apr 16, 2011 at 4:05 PM, Mariano Martinez Peck <
> marianopeck at gmail.com> wrote:
>
>> Hi. Sorry for my ignorance, but I remember hearing about that evaluating
>> stuff from a workspace may not be the best choice when we want to test stuff
>> on Cog. And in fact, today I suffered that. I put a breakpoint in the method
>> lookup, where the dnu is thrown. And then from a workspace I executed:
>>
>> TestCase new adasdassad
>>
>> And didn't stop. Then I put that in a method:
>>
>> MyClass >> blah
>> TestCase new asdadsadasda
>>
>> And did MyClass new blah
>>
>> and the breakpoint stop....So, can someone explain me what black magic
>> happens with the Workspace?  is something related to the Compiler evaluation
>> ?
>>
>> Thanks in advance,
>>
>> --
>> Mariano
>> http://marianopeck.wordpress.com
>>
>>
>
>
> --
> Mariano
> http://marianopeck.wordpress.com
>
>  IIRC, code evaluated by doits is always jitted.
>

Ahaaa interesting :)
Do you know how this is done (internally)? I mean, because it needs to scape
the normal execution...

Thans Henry,

Thus you won't hit a breakpoint in method lookup code which is only invoked
> by non-jitted calls.
>
> In the second case, statement MyClass blah is jitted, and (as long as other
> jitting-conditions have not been met) "TestCase new asdadsadasda" is
> interpreted normally, so the breakpoint is encountered.
>
> Cheers,
> Henry
>
>
>


-- 
Mariano
http://marianopeck.wordpress.com
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