Adam Olsen schrieb: > On Tue, Mar 18, 2008 at 9:21 AM, Steven Bethard > <[EMAIL PROTECTED]> wrote: >> On Tue, Mar 18, 2008 at 6:39 AM, Marcin 'Qrczak' Kowalczyk >> <[EMAIL PROTECTED]> wrote: >> > Dnia 17-03-2008, Pn o godzinie 11:56 -0600, Adam Olsen pisze: >> > >> > > I've replaced __del__ API (which resurrected objects) with a >> > > __finalize__/__finalizeattrs__ API (which doesn't). Attributes listed >> > > in __finalizeattrs__ are proxied into a core object, a finalizer >> > > thread is given a reference to the core, and when the main object is >> > > deleted the GC asynchronously notifies the finalizer thread so that it >> > > can call core.__finalize__(). The net result is an API very similar >> > > to __del__ (you need to list attributes it might use), but it's now >> > > impossible for the GC to run arbitrary code (I even enforce this). >> > >> > Ah! Irrespective of other issues, I like this very much. This design >> > agrees with my understanding of how finalization should behave, except >> > that I haven't had details in mind which would fit Python. My abstract >> > design needs the finalization function to somehow access parts of the >> > dying object, but not the object itself, and this design shows how to >> > actually do it in a convenient way. >> >> Note that you can use something very much like this right now:: >> >> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/519635 > > Yeah. That's missing the finalizer thread, but that could be add. > > Note, you need to use a finalizer thread in order to use locks to > protect your datastructures. Without it, if you simply preempt the > current thread like is done today, you can only do operations the > memory model provides as atomic. >
Hm, I could imagine objects that need to be finalized in the thread that created them. How could that be handled? Thomas _______________________________________________ Python-3000 mailing list Python-3000@python.org http://mail.python.org/mailman/listinfo/python-3000 Unsubscribe: http://mail.python.org/mailman/options/python-3000/archive%40mail-archive.com
