RFR (S): 8235247: WorkerDataArray leaks C heap memory for associated work items

Leo Korinth leo.korinth at oracle.com
Tue Dec 3 14:45:35 UTC 2019

On 03/12/2019 14:02, Thomas Schatzl wrote:
> Hi all,
>    can I have reviews for this fix to a small memory leak, leaking a few 
> 100 bytes per GC?
> WorkerDataArray does not delete linked thread work items, so code that 
> temporarily creates and uses them leaks.
> Currently this is only a variant of WeakProcessor::weak_oops_do() that 
> seems to be only used by G1.
> Thanks go to M. Vidstedt for finding and reporting the issue.
> CR:
> https://bugs.openjdk.java.net/browse/JDK-8235247
> Webrev:
> http://cr.openjdk.java.net/~tschatzl/8235247/webrev/
Looks good!


> Testing:
> manual testing using NMT; i did not observe other leaks given the 
> example program attached to the CR.
> Thanks,
>    Thomas

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