RFR (S) 8222130: Shenandoah should verify roots after pre-evacuation

[Zhengyu Gu]

Looks good.

-Zhengyu

On 4/8/19 12:08 PM, Aleksey Shipilev wrote:
> RFE:
>    https://bugs.openjdk.java.net/browse/JDK-8222130
> 
> Shenandoah verifier usually does the checks when the pause is over, and everything is done. One
> notable exception is evacuation path, where we do the verify_before_evacuation() check, then
> pre-evac the roots, and unblock. We need to check those roots are still fine after pre-evac by doing
> another verification step.
> 
> Fix:
>    http://cr.openjdk.java.net/~shade/8222130/wevrev.01/
> 
> Testing: Linux x86_64 fastdebug hotspot_gc_shenandoah
> 
> -Aleksey
>