RFR(S) 8225813: Shenandoah: Obsolete ShenandoahSuspendibleWorkers flag, as suspendible workers are required

Roman Kennke rkennke at redhat.com
Sat Jun 15 19:35:21 UTC 2019

Can you give a little bit of explanation why workers need to be
suspended at safepoints for concurrent root processing?

Other than that, the patch looks good.


> Please review this patch that makes suspendible workers required,
> instead of optional, and obsoletes the corresponding flag.
> Suspendible workers are required for concurrent root processing.
> Bug: https://bugs.openjdk.java.net/browse/JDK-8225813
> Webrev: http://cr.openjdk.java.net/~zgu/JDK-8225813/webrev.00/index.html
> Test:
>   hotspot_gc_shenandoah (fastdebug and release)
> Thanks,
> -Zhengyu

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