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From "Geir Magnusson Jr (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-1006) write barriers for C/C++ based GCs
Date Thu, 28 Sep 2006 04:53:52 GMT
    [ http://issues.apache.org/jira/browse/HARMONY-1006?page=comments#action_12438284 ] 
Geir Magnusson Jr commented on HARMONY-1006:

is this still relevant to current codebase?

> write barriers for C/C++ based GCs
> ----------------------------------
>                 Key: HARMONY-1006
>                 URL: http://issues.apache.org/jira/browse/HARMONY-1006
>             Project: Harmony
>          Issue Type: New Feature
>          Components: Contributions
>         Environment: DRLM + HARMONY-504 
>            Reporter: Alex Astapchuk
>         Attachments: wb4c_jet.patch
> Write barriers in jitrino.jet for C/C++ based GCs
> The patch only presumes HARMONY-504 applied. 
> Note: HARMONY-816 (WBs for Java) is *not* required (and even may conflict).
> Once the patch applied, Jitrino.JET will be always generating write barriers code.
> To turn WBs generation off provide '-Xjit jet::nowb' in command line when starting VM.
> Write barriers are generated for writing an object ref into field (PUTFIELD) and writing
an object into array (AASTORE) insturctions. 
> Writing into a static field (PUTSTATIC) will *not* invoke WB.
> The code expects neither exception nor GC from inside the WB function.

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