JEP proposed to target JDK 23: 481: Scoped Values (Third Preview)

[Mark Reinhold]

The following JEP is proposed to target JDK 23:

  481: Scoped Values (Third Preview)
       https://openjdk.org/jeps/481

  Summary: Introduce scoped values, which enable a method to share
  immutable data both with its callees within a thread, and with child
  threads.  Scoped values are easier to reason about than thread-local
  variables.  They also have lower space and time costs, especially
  when used together with virtual threads (JEP 444) and structured
  concurrency (JEP 480).  This is a preview API.

Feedback on this proposal from JDK Project Committers and Reviewers [1]
is more than welcome, as are reasoned objections.  If no such objections
are raised by 23:59 UTC on Wednesday, 29 May, or if they’re raised and
then satisfactorily answered, then per the JEP 2.0 process proposal [2]
I’ll target this JEP to JDK 23.

- Mark


[1] https://openjdk.org/census#jdk
[2] https://cr.openjdk.java.net/~mr/jep/jep-2.0-02.html