RFR: 8318709: Improve System.nanoTime performance on Windows

[Daniel Jeliński]

On Thu, 26 Oct 2023 06:57:35 GMT, David Holmes <dholmes at openjdk.org> wrote:

>> src/hotspot/os/windows/os_windows.cpp line 804:
>> 
>>> 802: static jlong initial_performance_count;
>>> 803: static jlong performance_frequency;
>>> 804: static double counts_per_nano; // NANOSECS_PER_SEC / performance_frequency
>> 
>> Doesn't that calculate nanos_per_count?
>
> Which is what we want of course.

D'oh! Of course it does. I'll rename in a sec.

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PR Review Comment: https://git.openjdk.org/jdk/pull/16336#discussion_r1372686446