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From "Ilya Berezhniuk (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-5098) Support for uncompressed heap references in gc
Date Thu, 15 Nov 2007 23:48:43 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-5098?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12542911
] 

Ilya Berezhniuk commented on HARMONY-5098:
------------------------------------------

Of course, these VM changes are unacceptable.
They breaks runtime switching in VM.
Looks like Chunrong has forgot that compressed vtable and compressed references are independent.

I'm now studying the GC_GEN code by stepping through it in uncompressed mode.
Collection starts correctly with my own very small changes in GC, but there are several (uncompressed
mode) bugs which lead to crash.
Now I've got the problem with obj_set_prefetched_next_pointer() / obj_get_prefetched_next_pointer()
- looks like REF type should not be used here.

I hope I'll get some useful changes when I get rid of these bugs.


> 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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