8199611: (se) Minor selector implementation clean-up

[Alan Bateman]

On 14/03/2018 14:01, Alan Bateman wrote:
>
> I have a number of patches for the Selector implementations, this 
> include a few random cleanups that I would prefer to separate out.
>
> The cleanup patch in the following webrev:
>   http://cr.openjdk.java.net/~alanb/8199611/webrev/index.html
>
The review thread for JDK-8199437 on net-dev brought up the suggestion 
for SelectionKey::toString to return a useful string for debugging. As 
we do doing cleanups in this area then we can include it with the 
changes here. I've updated the webrev in place, the only change is to 
SelectionKeyImpl where I've added a toString method (SelectionKeyImpl 
rather than SelectionKey as the implementation has easy access to the 
interest and ready ops).

-Alan