JDK-8256754 : Deoptimization::revoke_for_object_deoptimization: stack processing start call is redundant
- Type: Enhancement
- Component: hotspot
- Sub-Component: runtime
- Affected Version: 16
- Priority: P4
- Status: Resolved
- Resolution: Fixed
- Submitted: 2020-11-20
- Updated: 2020-12-03
- Resolved: 2020-11-30
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| JDK 16 |
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16 b27Fixed  |
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Relates :
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Description
Calling StackWatermarkSet::start_processing() in Deoptimization::revoke_for_object_deoptimization() is redundant. There are KeepStackGCProcessedMarks on all paths leading to revoke_for_object_deoptimization() as the call hierarchy below shows. StackWatermarkSet::start_processing(JavaThread *, enum StackWatermarkKind) : void ....Deoptimization::revoke_for_object_deoptimization(JavaThread *, frame, RegisterMap *, JavaThread *) : void ........Deoptimization::deoptimize_objects_internal(JavaThread *, GrowableArray<compiledVFrame *> *, bool &) : bool ............EscapeBarrier::deoptimize_objects_internal(JavaThread *, intptr_t *) : bool ................EscapeBarrier::deoptimize_objects_all_threads() : bool.................... // has KeepStackGCProcessedMark ................EscapeBarrier::deoptimize_objects(intptr_t *) : bool ....................EscapeBarrier::deoptimize_objects(int, int) : bool.................... // has KeepStackGCProcessedMark
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