Weak references and destructors

Tom Van Cutsem tomvc at google.com
Thu Dec 10 10:03:20 PST 2009


Hi,

I think what you are looking for is this:
http://wiki.ecmascript.org/doku.php?id=strawman:weak_references

Cheers,
Tom

On Thu, Dec 10, 2009 at 9:44 AM, Charles Jolley <charles at sproutit.com>wrote:

> Hi,
>
> I was wondering if any thought has gone into adding weak references and
> destructors to Harmony.
>
> We are finding that as we build large, long running JS apps, it is very
> hard to keep memory under control using the built-in GC since any reference
> - even for caching - will prevent the memory from being reclaimed.
>
> If we had a way to keep weak references for caches, the GC could reclaim a
> lot more of our memory automatically.  If a destructor were called before an
> object was dealloc'ed, we could clean up caches and tear down additional
> references, possibly allowing further memory to be reclaimed as well.
>
> Of course I can implement something like explicit reference counting in
> existing ES engines to get around this but then we lose many of the benefits
> of automated GC.
>
> -Charles
>
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>
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