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  1. JDK
  2. JDK-8071507

(ref) Clear phantom reference as soft and weak references do

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      Description

        Soft and weak references are automatically-cleared references (i.e. these references are cleared by the collector before it's enqueued) whereas phantom reference is not an automatically-cleared reference. Instead, the get method of a phantom reference always returns null to ensure that the referent of a phantom reference may not be retrieved.

        This proposes to make phantom references automatically-cleared reference as soft and weak references do.

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            backported by

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8285095 (ref) Clear phantom reference as soft and weak references do

            • P3 - Major loss of function.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8290986 (ref) Clear phantom reference as soft and weak references do

            • P3 - Major loss of function.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8292245 (ref) Clear phantom reference as soft and weak references do

            • P3 - Major loss of function.
            • Resolved
            blocks

            Enhancement - null JDK-8143847 Remove REF_CLEANER reference category

            • P3 - Major loss of function.
            • Resolved
            csr of

            CSR - null CCC-8071507 (ref) Clear phantom references when enqueued, like soft and weak references

            • P3 - Major loss of function.
            • Closed
            relates to

            Bug - A problem which impairs or prevents the functions of the product. JDK-8130338 ACCESS_VIOLATION in InstanceKlass::oop_ms_follow_contents()

            • P2 - Crashes, loss of data, severe memory leak.
            • Resolved

            Bug - A problem which impairs or prevents the functions of the product. JDK-7146977 finalize and PermGen and PhantomReference prevent GC inocrrectly

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved

            Bug - A problem which impairs or prevents the functions of the product. JDK-8133818 Additional number of processed references printed with -XX:+PrintReferenceGC after JDK-8047125

            • P5 - Cosmetic problem like misspelt words or misaligned text.
            • Closed

            Task - A task that needs to be done. JDK-8188066 (ref) Examine the reachability of JNI WeakGlobalRef and interaction with phantom refs

            • P3 - Major loss of function.
            • Resolved

            Enhancement - null JDK-8080225 FileInput/OutputStream/FileChannel cleanup should be improved

            • P3 - Major loss of function.
            • Resolved

            Enhancement - null JDK-8175797 (ref) Reference::enqueue method should clear the reference object before enqueuing

            • P2 - Crashes, loss of data, severe memory leak.
            • Closed

            Enhancement - null JDK-8024421 (ref) GC should clear PhantomReference

            • P3 - Major loss of function.
            • Closed
            links to

            Commit Commit openjdk/jdk8u-dev/0869fc01

            Commit Commit openjdk/jdk8u-ri/ad6cdea5

            Review Review openjdk/jdk8u-dev/94

            Review Review openjdk/jdk8u-ri/4

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                mchung Mandy Chung
                mchung Mandy Chung
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                  Created:
                  Updated:
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