Re: Linux to MacOSX port effort.

[Scott Christley]

On Sunday, April 28, 2002, at 04:56 PM, Marcus G. Daniels wrote:

> > > > > > "SC" == schristley  <address@hidden> writes:
>
> SC> I believe you are referring to the mframe source code; I recognize
> SC> it from gnustep-base, it was the basis for distribute objects.
> SC> OSX has a working DO system, so it is just a matter of hooking the
> SC> method calls to NSInvocation.
>
> Even if OSX has the means to do what mframe does, there are still
> usages of the GNU Objective C runtime in defobj that do the `phase 
> switching'
> of objects.  [`Phase switching' is the code in Swarm that creates
> method dispatch tables according to the phase or mode that the object 
> is in,
> e.g. objects being created have different valid methods from an object
> that is fully initialized]

Ah interesting!  I have a much better view of what Swarm is doing.  Now 
are these phases dynamic?  Can I add my own then apply them to an 
agent?  So in theory, my agent can progress through various "stages", 
responding to different methods for each stage, and the underlying 
implementation would enforce it.

Does Swarm implement this phase switching by adding/removing methods 
from the class; or do you switch-out the whole dispatch hash table?  I'm 
guessing swapping out the whole table would be most efficient 
execution-wise.  Hmm, a proxy implementation might also work.

thanks
Scott


                 ==================================
  Swarm-Support is for discussion of the technical details of the day
  to day usage of Swarm.  For list administration needs (esp.
  [un]subscribing), please send a message to <address@hidden>
  with "help" in the body of the message.