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From "Geir Magnusson Jr (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HARMONY-1762) [DRLVM][GC] weak references reachable from finalizible objects is not enumerated
Date Sun, 15 Oct 2006 02:34:40 GMT
     [ http://issues.apache.org/jira/browse/HARMONY-1762?page=all ]

Geir Magnusson Jr resolved HARMONY-1762.
----------------------------------------

    Resolution: Fixed

r464099

Ubuntu 6 - smoke, c-unit, ~kernel

> [DRLVM][GC] weak references reachable from finalizible objects is not enumerated
> --------------------------------------------------------------------------------
>
>                 Key: HARMONY-1762
>                 URL: http://issues.apache.org/jira/browse/HARMONY-1762
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>         Environment: All
>            Reporter: Ivan Volosyuk
>         Assigned To: Geir Magnusson Jr
>         Attachments: FinGC.java, special_references_fix.diff, special_references_fix2.diff
>
>
> Weak references processing is splited into 2 phases on compaction algorithm.
> 1 phase: check reachability of referent, remember the reference or referent for update
during compaction.
> 2 phase: vm_enqueue_reference() if the referent is not reachable.
> Algorithm of enumeration is the following:
> enumerate world
> enumerate (phase1) process weak and soft references
> enumerate finalizible objects.
> compaction
> enqueue weak and soft references
> ....
> Enumeration of finalizible objects may add more weak references which was not enumerated,
but which will be enqueued. This is the enumeration problem.

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