[Integrated] [foreign-memaccess] RFR: Add MemoryLayout::byteOffset

Chris Hegarty chegar at openjdk.java.net
Mon May 11 10:31:10 UTC 2020

On Mon, 11 May 2020 08:30:40 GMT, Chris Hegarty <chegar at openjdk.org> wrote:

> Hi,
> As part of feedback on the Foreign Memory API (when experimenting with
> its usage internally in the JDK), a small number of potential usability
> enhancements could be made to the API. This is the first such.
> This change:
>  1) renames MemoryLayout::offset to MemoryLayout::bitOffset, and
>  2) adds MemoryLayout::byteOffset
> This allows for easier interoperation with MemoryAddress, which deals
> with offsets and lengths in terms of bytes (rather than bits), e.g.
>    addr.addOffset(layout.byteOffset(groupElement("foo")))
> This brings a nice symmetry to the API; there is a trio of bit-wise
> methods: bitAlignment, bitOffset, bitSize, and their matching byte-wise
> counterparts; byteAlignment, byteOffset, byteSize.

This pull request has now been integrated.

Changeset: 1bd65632
Author:    Chris Hegarty <chegar at openjdk.org>
Committer: Maurizio Cimadamore <mcimadamore at openjdk.org>
URL:       https://git.openjdk.java.net/panama-foreign/commit/1bd65632
Stats:     131 lines in 2 files changed: 1 ins; 103 del; 27 mod

Add MemoryLayout::byteOffset

Reviewed-by: jvernee, mcimadamore


PR: https://git.openjdk.java.net/panama-foreign/pull/157

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