Question on why sun.management MBeans are not exported?

[Alan Bateman]

On 06/09/2023 14:02, Volker Simonis wrote:
> :
>
> I wonder why "sun.management" was encapsulated in the first place? I
> understand that it is not an "officially supported" API, but I find it
> still quite useful.
sun.management.* is JDK internal so not something for code outside the 
JDK to use directly. The only sun.* packages that are exported to all 
modules are the "critical internal APIs" in the jdk.unsupported module. 
JEP 260 has the details.


> :
>
> So to cut a long story short, I see several options:
>
> 1. Publicly export sun.management and restore the JDK 8 (or pre JDK
> 16) behavior. This would certainly require some polishing (e.g. some
> of the corresponding JVM functionality has already been removed [1])
> but I think it could still be quite useful.
> 2. Port the useful functionality from the "sun.management" MBeans to
> corresponding "com.sun.management" MBeans and remove the
> "sun.management" MBeans.
> 3. Remove the "sun.management" MBeans without substitution.
>
> What do you think?
If there are JDK-specific or HotSpot VM specific features where there is 
a compelling case for a management interface then com.sun.management is 
good place to prototype new APIs. You may already be familiar with 
com.sun.management.HotSpotDiagnosticMBean.

-Alan