RFR [11] 8200304: TwoStacksPlainDatagramSocketImpl and socket cleaner

[Chris Hegarty]

> On 28 Mar 2018, at 19:47, Roger Riggs <Roger.Riggs at oracle.com> wrote:
> 
> Hi Chris,
> 
> TwoStacksPlainDatagramSocketImpl.java:136 could be explicit about the native bind0
> changing the state.

Ok.

> And I agree with Alan that the calls to updateCleaner (:144) should occur whether or not
> the native bind0 throws an exception.
> ...
>> 
>> bind0 can try an exception so shouldn't there be a try-finally around this? Also would it be saner to unregister before bind0 and register afresh after it is called so that there is no point where a closed socket is registered with the cleaner?

Right, unconditionally unregistering and re-registering would be easier
to follow, and then try-finally would not be required either.  I’ll try this,
test it, and report back.

-Chris.