Bug ID: JDK-8188066 (ref) Examine the reachability of JNI WeakGlobalRef and interaction with phantom refs

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JDK 13	JDK 8
13 b13Fixed	8u351Fixed

Fix Request This issue is required in Java SE 8 Maintenance Release 4. Refer to the MR 4 proposal for details [1]. It provides updates to the JNI specification to clarify the behaviour of weak reference processing, in accordance with the reference processing changes already approved for backport to MR4: - JDK-8175797: (ref) Reference::enqueue method should clear the reference object before enqueuing - JDK-8178832: (ref) jdk.lang.ref.disableClearBeforeEnqueue property is ignored - JDK-8193780: (ref) Remove the undocumented jdk.lang.ref.disableClearBeforeEnqueue system property There is no compatibility impact from this specification update. The related CSR request is JDK-8287056. There is no PR as the JNI specification sources are not maintained in an OpenJDK repository. [1] https://mail.openjdk.java.net/pipermail/jdk8u-dev/2022-April/014783.html

25-05-2022

If this is satisfied by an update to the JNI spec then this and the CSR should move to hotspot->runtime as the "owner" of the JNI spec.

14-03-2019

CSR :	JDK-8220617 - (ref) Examine the reachability of JNI WeakGlobalRef and interaction with phantom refs
Relates :	JDK-8314080 - JNI spec: clarify NewWeakGlobalRef handling of weak global references
Relates :	JDK-8257180 - Prevent resurrection of final/phantom refs through JNI weak refs
Relates :	JDK-8071507 - (ref) Clear phantom reference as soft and weak references do