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Type: Enhancement
Resolution: Unresolved
Priority: P3
Fix Version/s: tbd
Affects Version/s: 9
Component/s: core-libs
Labels:

Subcomponent:
java.lang.invoke

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8043588	8u60	David Chase	P3	Closed	Won't Fix

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.

backported by

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

Closed

duplicates

JDK-8042235 redefining method used by multiple MethodHandles crashes VM

Closed

JDK-8040201 JSR 292: old non-redefined code is entered again after JVMTI PopFrame followed by class redefinition in MethodHandle.invoke

Closed

JDK-8027162 JSR292: implement MemberName interning

Closed

JDK-8042592 redefining method used by multiple MethodHandles crashes VM

Closed

JDK-8042593 redefining method used by multiple MethodHandles crashes VM

Closed

relates to

JDK-8008511 JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition

Resolved

JDK-8162795 [REDO] MemberNameTable doesn't purge stale entries

Resolved

JDK-8042235 redefining method used by multiple MethodHandles crashes VM

Closed

JDK-8166852 JavaScript engine eval() method causes JVM Young GC to pauses seconds

Closed

JDK-8152271 MemberNameTable doesn't purge stale entries

Closed

JDK-8054315 vm/mlvm/indy/func/jvmti/mergeCP_indy2none_a fails in nightly

Closed

JDK-8174749 Use hash table/oops for MemberName table

Resolved

(1 duplicates, 7 relates to)

Assignee:: Unassigned

Reporter:: John Rose

Votes:: 0 Vote for this issue

Watchers:: 14 Start watching this issue

Created:: 2013-04-25 16:58

Updated:: 2024-04-12 08:42

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