The finalizer holdings, could itself could hold a reference to the weakrefernce correct?
On Fri, Feb 19, 2016 at 12:30 AM, Dean Tribble <[email protected]> wrote: > Thanks for your comments. > > A practical answer to your question: If you drop references to a > subsystem that internally uses weak references, the "finalization" it would > engage is just death throes. For example, if you drop an Xml parser, then > there's no reason to muck out it's internal cache since that's going to be > collected anyway. Thus, this variant is more expressive. > > It also breaks the retention properties of the system. In order to require > the executor to run, *something *has to point at it (and the holdings) > strongly. Otherwise for example the holdings and executor might not be > retained (and you couldn't run finalization). You can end up with cycles of > executors pointing at each other's targets such that neither can ever be > collected because the system is keeping them around strongly. > > On Thu, Feb 18, 2016 at 10:42 PM, John Lenz <[email protected]> wrote: > >> This seems like a very solid proposal. I like that the finalizers run on >> their own turn (it had to be that way in retrospect). >> >> I'm unclear about one thing: the reasoning for not running finalizers >> when weak-references them become unreferenced. Did I misunderstand this? >> Doesn't this force he "hard" reference to also a soft reference "weak >> reference" to insure that finalizer run (such as closing a file, etc)? If >> aren't concerned about non-memory resources is there any point to having >> holding at all? >> >> >> >> On Sun, Feb 14, 2016 at 11:35 PM, Dean Tribble <[email protected]> >> wrote: >> >>> I have posted a stage 1 proposal for weak references in ES7 for your >>> perusal and feedback. >>> >>> https://github.com/tc39/proposal-weakrefs.git >>> >>> Thanks to Mark Miller and the authors of earlier proposals for help with >>> the document and content! Finally thanks to a few intrepid early reviewers >>> for their edits, comments, and feedback. >>> >>> _______________________________________________ >>> es-discuss mailing list >>> [email protected] >>> https://mail.mozilla.org/listinfo/es-discuss >>> >>> >> >> _______________________________________________ >> es-discuss mailing list >> [email protected] >> https://mail.mozilla.org/listinfo/es-discuss >> >> >
_______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
