RFR: 8282191: Implementation of Foreign Function & Memory API (Preview) [v16]

[Paul Sandoz]

On Wed, 30 Mar 2022 21:51:16 GMT, Maurizio Cimadamore <mcimadamore at openjdk.org> wrote:

>> This PR contains the API and implementation changes for JEP-424 [1]. A more detailed description of such changes, to avoid repetitions during the review process, is included as a separate comment.
>> 
>> [1] - https://openjdk.java.net/jeps/424
>
> Maurizio Cimadamore has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 31 commits:
> 
>  - Merge branch 'master' into foreign-preview
>  - Tweak FunctionDescriptor::argumentLayouts to return an immutable list
>  - Fix bad usage of `@link` with primitive array types
>  - Switch to daemon threads for async upcalls
>  - Use thread local storage to optimize attach of async threads
>  - Drop support for Constable from MemoryLayout/FunctionDescriptor
>  - Merge branch 'master' into foreign-preview
>  - Revert changes to RunTests.gmk
>  - Add --enable-preview to micro benchmark java options
>  - Address more review comments
>  - ... and 21 more: https://git.openjdk.java.net/jdk/compare/ce27d9dd...247e5eb5

Java code looks good (i did not go through the tests). As is common no comments, since code was reviewed in smaller steps in the panama-foreign respository.

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Marked as reviewed by psandoz (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/7888