[jira] Assigned: (HARMONY-11) GC, Heap and Object Model redesign

["Geir Magnusson Jr (JIRA)" <ji...@apache.org>]

     [ http://issues.apache.org/jira/browse/HARMONY-11?page=all ]

Geir Magnusson Jr reassigned HARMONY-11:
----------------------------------------

    Assign To:     (was: Geir Magnusson Jr)

> GC, Heap and Object Model redesign
> ----------------------------------
>
>          Key: HARMONY-11
>          URL: http://issues.apache.org/jira/browse/HARMONY-11
>      Project: Harmony
>         Type: Improvement

>   Components: VM
>     Reporter: Robin Garner
>  Attachments: gc.tgz
>
> The object model / heap implementation/garbage collector for  bootJVM need redesign.  Major points are:
> 1) per-object metadata to be 
>   - reduced to <= 3 words
>   - re-cast as an object header
> 2) Object references redesigned as pointers rather than hashes or table indexes
> 3) Garbage collection metadata integrated with the object header
>  
> 4) GC maps for stacks produced at GC-safe points
> Example code is attached.

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