Official support for Unsafe

[Maurizio Cimadamore]

On 12/01/2024 19:19, Quân Anh Mai wrote:
> It is really late here so I will try that tomorrow.
>
> Note that usage of the everything segment requires 
> --enable-native-access, which in general gives an unsafe notice anyway.

Sure, I'm mostly curious as to how much of the gap is caused by bound 
check for on-heap vs. off-heap access. In my experience the latter 
almost always dominate the former.

Maurizio

>
> Regards,
> Quan Anh
>
> On Sat, 13 Jan 2024 at 01:29, Maurizio Cimadamore 
> <maurizio.cimadamore at oracle.com> wrote:
>
>
>     On 12/01/2024 17:26, Quân Anh Mai wrote:
>     > FYI, in my submission to 1brc, using Unsafe decreases the execution
>     > time from 3.25s to 2.57s on the test machine.
>
>     Just curious - what is the difference compared with the everything
>     segment trick?
>
>     (While I know it can't do on-heap access, perhaps you can tweak
>     the code
>     to be all off-heap?)
>
>     Maurizio
>
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