JDK-8337511 : Implement JEP 404: Generational Shenandoah (Experimental)
  • Type: Sub-task
  • Component: hotspot
  • Sub-Component: gc
  • Affected Version: 24
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2024-07-30
  • Updated: 2025-05-19
  • Resolved: 2024-11-29
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JDK 24
24 b27Fixed
Related Reports
CSR :  
JDK-8307343 - Implementation: JEP 404: Generational Shenandoah (Experimental)
Duplicate :  
JDK-8307314 - Implementation: Generational Shenandoah (Experimental)
Relates :  
JDK-8347804 - GenShen: Crash with small GCCardSizeInBytes and small Java heap
Relates :  
JDK-8345647 - Fix recent NULL usage backsliding in Shenandoah
Relates :  
JDK-8338336 - GenShen: Cleanup stale TODOs
Relates :  
JDK-8344593 - GenShen: Review of ReduceInitialCardMarks
Relates :  
JDK-8339094 - Shenandoah: Fix up test output from ShenandoahNumberSeqTest
Relates :  
JDK-8339346 - GenShen: Remove even more stale TODOs
Relates :  
JDK-8345399 - GenShen: Error: Verify init-mark remembered set violation; clean card should be dirty
Relates :  
JDK-8347353 - [Shenandoah] guarantee(stats.non_trashed_span() <= generation_capacity) failed: Before Mark: generation (Young) size spanned by regions (1244) * region size (256K) must not exceed current capacity
Relates :  
JDK-8344312 - GenShen: TestAllocOutOfMemory.java#large failed with different Exception
Relates :  
JDK-8348400 - GenShen: assert(ShenandoahHeap::heap()->is_full_gc_in_progress() || (used_regions_size() <= _max_capacity)) failed: Cannot use more than capacity #
Relates :  
JDK-8339611 - GenShen: Simplify ShenandoahOldHeuristics::trigger_collection_if_fragmented
Relates :  
JDK-8345958 - Test gc/shenandoah/TestVerifyLevels.java#generational intermittent timed out
Relates :  
JDK-8339521 - GenShen: miscellaneous review feedback on barrier code
Relates :  
JDK-8340695 - GenShen: Clean up failing tests
Relates :  
JDK-8338420 - GenShen: Forward declare card table for Shenandoah barrier set
Relates :  
JDK-8338473 - GenShen: Cleanup access levels, whitespace, typos and unused code
Relates :  
JDK-8338477 - GenShen: Cleanup generational heap
Relates :  
JDK-8338479 - GenShen: Detemplatize ShenandoahScanRemembered
Relates :  
JDK-8338717 - GenShen: Fix up some assertions
Relates :  
JDK-8338780 - GenShen: Fix up some comments
Relates :  
JDK-8338472 - GenShen: Revisit implementation of preselection predicate on shenandoah heap regions used in collection set construction
Relates :  
JDK-8338475 - GenShen: Consider merging the card-scanning & root-scanning phases into one, avoiding an unnecessary barrier sync between workers
Relates :  
JDK-8338867 - GenShen: Do all size accounting in words
Relates :  
JDK-8339643 - Port JEP 404 to RISC-V
Relates :  
JDK-8348610 - GenShen: TestShenandoahEvacuationInformationEvent failed with setRegions >= regionsFreed: expected 1 >= 57
Comments
Changeset: 28ae281b Branch: master Author: William Kemper <wkemper@openjdk.org> Date: 2024-11-29 20:53:07 +0000 URL: https://git.openjdk.org/jdk/commit/28ae281b42cd00f471e275db544a5d23a42df59c
29-11-2024
A pull request was submitted for review. Branch: master URL: https://git.openjdk.org/jdk/pull/21273 Date: 2024-09-30 22:02:45 +0000
30-09-2024
A pull request was submitted for review. Branch: master URL: https://git.openjdk.org/jdk/pull/20395 Date: 2024-07-30 21:18:36 +0000
30-07-2024