RFR 8186961 Class.getFields() does not return fields of previously visited super interfaces/classes.

[Paul Sandoz]

> On 30 Nov 2017, at 13:00, Claes Redestad <claes.redestad at oracle.com> wrote:
> 
> Hi,
> 
> as expected this is quite a bit easier to follow. Thanks!
> 
> As any heavy use of reflection is likely to hit cached data, then heavily optimizing might be ill-advised here.
> 
> A simpler optimization might be to check if the class has any superclass or interfaces whatsoever first, since if not then publicFields == privateGetDeclaredField(true). This might reduce number of LinkedHashSets created for many trivial class hierarchies significantly for only a nominal increase in code complexity, and actually reduce the retained set a bit.
> 

I am resisting the temptation to do that right now, i threw away a highly optimal implementation, i liked it, but you might not :-) An intermediate solution is to create a pre-sized Field[][] and not be as smart about that allocation.

Mandy is gonna take a careful look next week.

Paul.