RFR(XXS) 8229185: Shenandoah: CLDG and CodeCahe purge can overlap Safepoints

[Aleksey Shipilev]

On 8/6/19 3:40 PM, Zhengyu Gu wrote:
> CLDG::purge() and CodeCache::purge_exception_caches() can overlap safepoints, therefore, can be done
> without STS.
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8229185

Makes sense. Looks good.

-- 
Thanks,
-Aleksey