RFR 8225573: Shenandoah: Enhance ShenandoahVerifier to ensure roots to-space invariant

[Zhengyu Gu]

On 6/11/19 1:21 PM, Zhengyu Gu wrote:
> This patch adds a new API to Shenandoah verifier, the verifies all roots 
> only contain to-space references. This API should help concurrent root 
> processing work, to catch bad references in roots.
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8225573
> Webrev: http://cr.openjdk.java.net/~zgu/JDK-8225573/webrev.00/8225573

Sorry, bad link. Should be:

Webrev: http://cr.openjdk.java.net/~zgu/JDK-8225573/webrev.00/

Thanks,

-Zhengyu

> 
> Test:
>    hotspot_gc_shenandoah (fastdebug and release) with -XX:+ShenandoahVerify
> 
> Thanks,
> 
> -Zhengyu