[11u] RFR: 8235829: graal crashes with Zombie.java test

[Doerr, Martin]

Hi Götz,

right, the nmethod barriers for concurrent class unloading with zGC and Shenandoah are not needed in 11u.
Looks good to me.

Best regards,
Martin


> -----Original Message-----
> From: jdk-updates-dev <jdk-updates-dev-retn at openjdk.java.net> On
> Behalf Of Lindenmaier, Goetz
> Sent: Freitag, 20. November 2020 14:59
> To: jdk-updates-dev <jdk-updates-dev at openjdk.java.net>
> Subject: [11u] RFR: 8235829: graal crashes with Zombie.java test
> 
> Hi,
> 
> I am downporting this for parity with 11.0.10-oracle.
> 
> http://cr.openjdk.java.net/~goetz/wr20/8235823-graal_zombie_crash-
> jdk11/01/
> 
> The original change adds a lot of BarrierSetNMethod barriers.
> This barrier type does not exist in 11. It is not needed as no
> concurrent class unloading is implemented in 11. That was added upstream
> for ZGC and Shenandoah.
> I omitted this coding.
> 
> https://bugs.openjdk.java.net/browse/JDK-8235829
> https://hg.openjdk.java.net/jdk/jdk14/rev/26bb0fe2270a
> 
> Best regards,
>   Goetz.