RFR: 8200559: Java agents doing instrumentation need a means to define auxilary classes

[Remi Forax]

----- Mail original -----
> De: "Rafael Winterhalter" <winterhalter at openjdk.java.net>
> À: "core-libs-dev" <core-libs-dev at openjdk.java.net>, "serviceability-dev" <serviceability-dev at openjdk.java.net>
> Envoyé: Vendredi 16 Avril 2021 15:52:07
> Objet: RFR: 8200559: Java agents doing instrumentation need a means to define auxilary classes

> To allow agents the definition of auxiliary classes, an API is needed to allow
> this. Currently, this is often achieved by using `sun.misc.Unsafe` or
> `jdk.internal.misc.Unsafe` ever since the `defineClass` method was removed from
> `sun.misc.Unsafe`.

You can already use Lookup.defineClass() + privateLookupIn() + Instrumentation.redefineModule() for that ?

Rémi

> 
> -------------
> 
> Commit messages:
> - 8200559: Java agents doing instrumentation need a means to define auxiliary
> classes
> 
> Changes: https://git.openjdk.java.net/jdk/pull/3546/files
> Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3546&range=00
>  Issue: https://bugs.openjdk.java.net/browse/JDK-8200559
>  Stats: 185 lines in 4 files changed: 185 ins; 0 del; 0 mod
>  Patch: https://git.openjdk.java.net/jdk/pull/3546.diff
>  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3546/head:pull/3546
> 
> PR: https://git.openjdk.java.net/jdk/pull/3546