RFR: 8312623: SA add NestHost and NestMembers attributes when dumping class

[David Holmes]

On Tue, 1 Aug 2023 20:53:45 GMT, Ashutosh Mehra <duke at openjdk.org> wrote:

>> @ashu-mehra That was one case. I also want to know that you have tested deeply nested classes; and hidden classes (if applicable). Thanks.
>
> @dholmes-ora I verified the case for hidden dynamically injected classes. The dumped class data for a hidden dynamically injected class does not have any Nest-Host attribute. When generating these classes dynamically the VM does not expose nest-host information in the class data, but sets the nest-host directly in the InstanceKlass.
> 
> Also verified the case for deeply nested classes by creating chain of nested classes as:
> 
> class DeepNest {
>   class NestLvl1 {
>     class NestLvl2 {
>       class NestLvl3 {
>       }
>     }
>   }
> } 
> 
> 
> Only `DeepNest` has the `NestMembers` attribute which lists all the NestLvl[1-3] classes. Rest all have `DeepNest` as the `NestHost` attribute.
> 
> Does this cover all the cases you flagged?

@ashu-mehra thanks for doing the additional testing. Pity there is no regression/functional test for this.

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PR Comment: https://git.openjdk.org/jdk/pull/15005#issuecomment-1661502815