RFR JDK-7186258: InetAddress$Cache should replace currentTimeMillis with nanoTime (+more)

[Martin Buchholz]

On Wed, Jul 2, 2014 at 7:39 AM, Claes Redestad <claes.redestad at oracle.com>
wrote:

> Hi Peter,
>
>  perhaps the synchronized(this)-block in NameServiceAddresses::get() can
> be replaced with a ReentrantLock? Applying this on top of your patch, I
> seem to improve scores on your benchmark for -t 4 by ~33% on my machine:
>

Once upon a time ReentrantLock had some performance advantage over builtin
synchronized; but today best practice is to prefer ReentrantLock only for
the software engineering advantages like more flexibility or clarity.
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