[core-libs] RFR (L): 8010319: Implementation of JEP 181: Nest-Based Access Control

[Peter Levart]

On 05/22/2018 12:36 PM, Peter Levart wrote:
> This would not penalize access to package-private and protected 
> members with areNestMates() JNI calls and maybe caching will not be 
> needed at all.

But if caching may need to be performed, then the simplest form of 
nestmate access check caching would be the caching of getNestHost() 
result inside the Class object. This need not be in the ReflectiveData 
object, but directly in the Class object as the invariant is that all 
members of the nest share the same package and consequently the same 
defining ClassLoader - there would be no ClassLoader leak(s) possible by 
keeping a hard reference to the cached nest-host Class object in each 
Class...

Regards, Peter