[16] RFR 8251359: Shenandoah: filter null oops before calling enqueue/SATB barrier

Zhengyu Gu zgu at redhat.com
Tue Aug 11 14:16:10 UTC 2020


Please review this small patch that ensures null oops are filtered out 
before calling enqueue/SATB barrier. Enqueuing null oops create extra 
works and only get thrown out in later phase.


Bug: https://bugs.openjdk.java.net/browse/JDK-8251359
Webrev: http://cr.openjdk.java.net/~zgu/JDK-8251359/webrev.00/index.html

Test:
   hotspot_gc_shenandoah

Thanks,

-Zhengyu



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