Review request for JDK-8035948 - Redesign property listeners for shared classes

A. Sundararajan sundararajan.athijegannathan at
Thu Feb 27 19:18:06 PST 2014


Copyright year in this file has to be 2014.


On Thursday 27 February 2014 10:52 PM, Hannes Wallnoefer wrote:
> Please review JDK-8035948 - Redesign property listeners for shared 
> classes:
> This prepares property maps and property listeners to work better with 
> classes that are reused between JS environments. The central ideas are:
>  - Reuse property maps between globals in order to minimize polymorphism.
>  - Use SoftReferences for property map history to avoid memory leaks
>  - Redesign property listeners to be attatched to property maps only 
> since ScriptObjects are specific to one JS environment.
>  - Reduce number of property listeners by only creating them when 
> needed (when a callsite accesses an inherited property).
>  - Reduce number of prototype history lookups in property maps by 
> using a unique combination of prototype/property maps from the start.
> Actual class sharing functionality is coming in a later webrev. Let me 
> know if you have any questions about this.
> Hannes

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