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  1. JDK
  2. JDK-8013267

move MemberNameTable from native code to Java heap, use to intern MemberNames

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      Description

        The JSR 292 Lookup API makes native calls to obtain MemberNames which underly direct method handles. To simplify MemberName lookup and reduce duplicate creation of MemberName, we will move the MemberName table created by JDK-8008511 into the Java heap, so that Lookup queries can refer to that.

        See comments on JDK-8005232 for a related ReflectionData structure. This structure would be extended to include the content of the MemberNameTable. Because a SoftReference is used to make the ReflectionData structure droppable, we would place the new data fields in the SoftReference (making it into a ClassData subclass) rather adding them to ReflectionData.

        Also, certain other fields in Class (such as those holding annotations) could be moved at the same time into the ClassData, for a net reduction of application footprint.

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            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-8043588 move MemberNameTable from native code to Java heap, use to intern MemberNames

            • P3 - Major loss of function.
            • Resolved
            duplicates

            Bug - A problem which impairs or prevents the functions of the product. JDK-8042235 redefining method used by multiple MethodHandles crashes VM

            • P1 - Blocks development and/or testing work, production could not run.
            • Closed

            Bug - A problem which impairs or prevents the functions of the product. JDK-8040201 JSR 292: old non-redefined code is entered again after JVMTI PopFrame followed by class redefinition in MethodHandle.invoke

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8027162 JSR292: implement MemberName interning

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

            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-8042592 redefining method used by multiple MethodHandles crashes VM

            • P1 - Blocks development and/or testing work, production could not run.
            • Closed

            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-8042593 redefining method used by multiple MethodHandles crashes VM

            • P1 - Blocks development and/or testing work, production could not run.
            • Closed
            relates to

            Bug - A problem which impairs or prevents the functions of the product. JDK-8166852 JavaScript engine eval() method causes JVM Young GC to pauses seconds

            • P1 - Blocks development and/or testing work, production could not run.
            • Resolved

            Bug - A problem which impairs or prevents the functions of the product. JDK-8008511 JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition

            • P3 - Major loss of function.
            • Resolved

            Bug - A problem which impairs or prevents the functions of the product. JDK-8162795 [REDO] MemberNameTable doesn't purge stale entries

            • P3 - Major loss of function.
            • Resolved

            Bug - A problem which impairs or prevents the functions of the product. JDK-8042235 redefining method used by multiple MethodHandles crashes VM

            • P1 - Blocks development and/or testing work, production could not run.
            • Closed

            Bug - A problem which impairs or prevents the functions of the product. JDK-8152271 MemberNameTable doesn't purge stale entries

            • P3 - Major loss of function.
            • Closed

            Bug - A problem which impairs or prevents the functions of the product. JDK-8054315 vm/mlvm/indy/func/jvmti/mergeCP_indy2none_a fails in nightly

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

            Enhancement - null JDK-8174749 Use hash table/oops for MemberName table

            • P3 - Major loss of function.
            • Resolved

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                Unassigned Unassigned
                jrose John Rose
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                  Created:
                  Updated: