[foreign-memaccess+abi] RFR: 8310820: Remove MemorySegment::segmentOffset

[Jorn Vernee]

On Fri, 23 Jun 2023 18:23:41 GMT, Maurizio Cimadamore <mcimadamore at openjdk.org> wrote:

> This method was added a long time ago, mostly to support the use case of "rebasing" a safe segment over the unsafe "everything" segment. We have other ways to express these use cases in the current API.
> 
> On top of that, this method can return negative offsets, which would then lead to failures when used with access APIs.
> 
> Finally, since we have unified memory segments with addresses, computing relative offset between segment is fairly easy (just subtract the segment addresses).

Marked as reviewed by jvernee (Committer).

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PR Review: https://git.openjdk.org/panama-foreign/pull/841#pullrequestreview-1498408465