Review Request (S) 8013945: CMS fatal error: must own lock MemberNameTable_lock

serguei.spitsyn at oracle.com serguei.spitsyn at oracle.com
Fri May 24 10:39:42 PDT 2013


Webrev with the fix suggested by Mikael G. :
http://cr.openjdk.java.net/~sspitsyn/webrevs/2013/hotspot/8013945-JVMTI-JSR292.2/ 


I'm going to integrate it after testing, but a couple of extra eyes to 
double-check it would be nice.

Thanks,
Serguei


On 5/24/13 2:29 AM, serguei.spitsyn at oracle.com wrote:
> Please, review the fix for:
>   bug: http://bugs.sun.com/view_bug.do?bug_id=8013945
>   jbs: https://jbs.oracle.com/bugs/browse/JDK-8013945
>
> Open webrev:
> http://cr.openjdk.java.net/~sspitsyn/webrevs/2013/hotspot/8013945-JVMTI-JSR292.1/ 
>
>
> Summary:
>   CMS calls InstanceKlass::release_C_heap_structures() concurrently.
>   The "delete mnt" needs to take MemberNameTable_lock if 
> !SafepointSynchronize::is_at_safepoint().
>
> Testing:
>   The vm/mlvm and Nashorn tests, the tests listed in the bug report
>
> Thanks,
> Serguei



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