JEP proposed to target JDK 21: 442: Foreign Function & Memory API (Third Preview)

Mark Reinhold mark.reinhold at oracle.com
Fri Apr 14 13:27:40 UTC 2023


The following JEP is proposed to target JDK 21:

  442: Foreign Function & Memory API (Third Preview)
       https://openjdk.org/jeps/442

  Summary: Introduce an API by which Java programs can interoperate with
  code and data outside of the Java runtime.  By efficiently invoking
  foreign functions (i.e., code outside the JVM), and by safely accessing
  foreign memory (i.e., memory not managed by the JVM), the API enables
  Java programs to call native libraries and process native data without
  the brittleness and danger of JNI.  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 Friday, 21 April, 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 21.

- Mark


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


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