Label implementations that use Unsafe

[msavy]

May I suggest adding a label to your implementation table for "uses Unsafe"?

Perhaps a remark in the comments section is enough. Alternatively, an attributes list or new column.

I suspect that what one can learn from these implementations — in terms of understanding how to optimise — is very different from Unsafe to safe Java. Many codebases ban the use of Unsafe.

Thank you so much for doing this, Gunnar. It's been a lot of fun to watch.

Source of discussion: https://twitter.com/marcsavy/status/1746853855264993358