RFR: JDK-8310502 : Optimization for j.l.Long.fastUUID() [v25]

Tue Jun 27 16:38:16 UTC 2023

On Tue, 27 Jun 2023 16:28:44 GMT, Glavo <duke at openjdk.org> wrote:

> Wenshao hopes to use this array for other optimizations in `java.lang` in the future.
> 
> But as for this PR, I suggest wenshao not to do so much. I suggest moving `DIGITS` back to `HexDigits` first to make the modifications in this PR smaller. Reducing modifications helps with faster review.
> 
> When you need to optimize the classes in `java.lang`, we will continue to discuss how to share these arrays more safely and efficiently.

Let's keep this PR as simple as possible. Right now, it's up to 100 comments and 27 iterations, it's annoying to be sending new contributor Wenshao in different directions. Future work that would allow safer sharing of arrays is future work, let's keep this PR as simple as possible. Not all applications use UUID.

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PR Comment: https://git.openjdk.org/jdk/pull/14578#issuecomment-1609869958