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From "Geir Magnusson Jr (JIRA)" <j...@apache.org>
Subject [jira] Closed: (HARMONY-1490) [drlvm] Fixes for SingleStep implementation. Corrected phase, state structure, addded m2n transition
Date Thu, 21 Sep 2006 19:02:24 GMT
     [ http://issues.apache.org/jira/browse/HARMONY-1490?page=all ]

Geir Magnusson Jr closed HARMONY-1490.
--------------------------------------


> [drlvm] Fixes for SingleStep implementation. Corrected phase, state structure, addded
m2n transition
> ----------------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-1490
>                 URL: http://issues.apache.org/jira/browse/HARMONY-1490
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>            Reporter: Gregory Shimansky
>         Assigned To: Geir Magnusson Jr
>         Attachments: single-step-fixes.patch, test.zip
>
>
> I've created several bugfixes for SingleStep event implementation.
> It appears that keeping enabled flag in JVMTISingleStepState struct is not possible because
it may be deallocated when thread finishes. So I decided that enabled flag should be the pointer
to this struct itself.
> Another bugfix is that SingleStep shouldn't be sent in phases other than LIVE. This also
fixes the problem when SingleStep is sent for VM startup and agent cannot use any JNI function
yet.
> Another bugfix is for breakpoint. For JIT mode I've added an m2n transition to allow
stack iterator to work correctly inside of breakpoint callback. Otherwise it didn't see the
upper Java frames.
> On windows the test I am using still crashes when it finishes, but at least I can see
SingleStep events coming to the agent.

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