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From "Pavel Pervov (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-5098) Support for uncompressed heap references in gc
Date Fri, 16 Nov 2007 08:14:43 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-5098?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12542992
] 

Pavel Pervov commented on HARMONY-5098:
---------------------------------------

Compression of forwarding pointer can be acomplished but that imposes additional requrement
on a GC.

The requirement is that an object would be moved no farther than +/- 2GB space of its current
location.

If it is ok for GC, we can keep obj_info compressed. If it's not - we have to uncompress obj_info
and align it on native pointer size boundary.

> Support for uncompressed heap references in gc
> ----------------------------------------------
>
>                 Key: HARMONY-5098
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5098
>             Project: Harmony
>          Issue Type: New Feature
>          Components: DRLVM
>            Reporter: Rana Dasgupta
>         Attachments: H5098.uncompRef.patch, uncompress.patch
>
>
> JIRA issue for gc changes to support uncompressed 64 bit references

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