RFR (S) 8219459: oopDesc::is_valid() is broken

[Jiangli Zhou]

LGTM

Best Regards,
Jiangli

From: <coleen.phillimore at oracle.com>
Date: Wed, May 8, 2019 at 2:46 PM
To: hotspot-runtime-dev at openjdk.java.net runtime

> Summary: Use Metaspace::contains() to test address ranges.
>
> Tested with hs-tier1-3, and all tier1 on linux-x64-debug.  Tested
> manually in gdb.
>
> open webrev at http://cr.openjdk.java.net/~coleenp/2019/8219459.01/webrev
> bug link https://bugs.openjdk.java.net/browse/JDK-8219459
>
> Thanks,
> Coleen