Andreas, So ExternalStructure>>free is not invoked by default? Sady to say, I never even considered that possibility.
Bill -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Andreas Raab Sent: Friday, April 02, 2010 8:24 PM To: The general-purpose Squeak developers list Cc: [email protected] Subject: Re: [Pharo-project] [FFI] ExternalStructure ownership (or not) of memory I would suggest that you only register a finalizer for objects where you *do* have responsibility to reclaim them. There are no implicit finalizers registered for any subclasses of ExternalObject by default - the only thing that happens is that all handles are cleared when the image is restarted. Cheers, - Andreas On 4/2/2010 5:17 PM, Schwab,Wilhelm K wrote: > Hello all, > > Suppose I have a pointer to a structure and I do or do not have the > responsibility of reclaiming the memory when a corresponding > ExternalStructure sub-instance is finalized. How do I distinguish the two > cases? One idea I had is to explicitly set the handle to nil if I do not own > the memory, but (please correct me if I'm wrong), I can't do that while I'm > still using the instance because it will presumably use the handle in > accessing the fields, right? > > Looking at implementors of #isExternalAddress, maybe the idea is to use a > byte array to make a copy of memory and an address to refer to it. > > What should I be asking? :) > > Bill > > > _______________________________________________ Pharo-project mailing list [email protected] http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project _______________________________________________ Pharo-project mailing list [email protected] http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project
