On Oct 29, 2010, at 12:08 AM, Erik Corry wrote: > One of the hallmarks of a real language implementation vs. a 'toy > scripting language' ala PHP is a good GC. I'd really like to see > someone do a low-latency GC with weak maps before we hobble the > language with something that can't be implemented efficiently.
Any chance you guys will implement the WeakMap proposal? > By modern I mean generational and either parallel or concurrent. Parallel vs. concurrent GC is a good distinction to bring up. We're interested in parallel GC too, and we have a WeakMap prototype under way, so we'll have to report back in due course. Still, it seems premature to rule WeakMaps out right now. Rather than strangle them in the cradle, I hope several browser-based engines can implement and see what we find out. The use-cases in the language remain pretty compelling, without a good fallback strategy (leaky strong maps? No object reference keyed maps at all?). Concurrent is a different animal from parallel, and I remain skeptical about JS implementations deviating significantly from shared-nothing concurrency, even as the JS embeddings use threads under the hood to utilize more cores. /be _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
