RFR (S) 8153413: Exceptions::_throw always logs exceptions, penalizing performance

[coleen.phillimore at oracle.com]

Withdraw this for now.  I have to merge it with Yasumasa's change.
thanks,
Coleen

On 2/14/19 11:37 AM, coleen.phillimore at oracle.com wrote:
> Summary: construct exception string into Event message directly add if 
> (log_is_enabled) for logging.
>
> This is sort of minimal and could be extended but seems worth doing.  
> Tested with tier1-2 and performance tests.  See bug for more information.
>
> open webrev at http://cr.openjdk.java.net/~coleenp/2019/8153413.01/webrev
> bug link https://bugs.openjdk.java.net/browse/JDK-8153413
>
> Thanks,
> Coleen