Native Image Committer and Community Meeting 2025-05-22

[wirthi]

List of all past and upcoming meetings: #3933

The meeting after this one is planned for June 26nd, 2025. The meeting will typically be on the last Thursday of each month.

New and Noteworthy

• Native Image Layers
  [GR-57645] Support registering elements for reflection in extension layers #11056
  [GR-64554] Introduce DuplicableImageSingletons. #11120
  [GR-64325] Migrate more layered image metadata to schema. #11072

• Streamline reachability metadata
  [GR-60238] Include JNI reachability metadata with reflection #11066
  [GR-65003] Fix reflection parser when JNI is disabled #11210

• Usability
  [GR-62143] Preserve all fields in the preserve mode. #11183
  [GR-64314] Print warning when glob is too general #11179
  [GR-64531] Escape stars in matching text when fetching hosted only content #11176
  [GR-63031] Enable -H:Preserve=all for macOS. #11106
  [GR-63998] Enable -H:Preserve=all on Windows. #11067
  [GR-62989] Remove NEGATIVE_QUERY from registeredResources in Build Report data when it was replaced with an actual resource #11065

• Monitoring / Tooling
  [GR-64664] Fix JFR epoch id. #11102 (Red Hat)
  [GR-61151] Remove internal frames from the top of JFR event stacktraces. #11082 (Red Hat)
  [GR-57064] Skip unnecessary JFR registrations for virtual threads. #11070 (Red Hat)
  [GR-64420] Use initial system properties for jvmstat performance counters. #11049

• Debugging
  [GR-64051] Debuginfotest fails due to updated debug info for the object header. #11061

• FFM API / Panama
  [GR-61959] SVM: Add shared arena support. #11125
  [GR-64940] Shared arena: support vector api signatures. #11185
  [GR-64496] Disallow FFM API objects with associated native resources in image heap. #11189
  [GR-60350] Correctly handle in-memory return for direct upcalls. #11202

• JDK Updates and removing JDK 21 from master
  [GR-55515] Disable JDK 21 support in Graal Compiler #11141
  [GR-64960] Remove JDK 21 specific code from Web Image #11187
  [GR-64843] Remove JDK 21 Substitutions from Native Image #11162
  [GR-64829] Remove JDK21 specific code in compiler. #11167
  [GR-64855] Remove JDK 21 code guarded by JavaVersionUtil.JAVA_SPEC from Native Image #11173

• Truffle
  [GR-64086] Add extended dynamic object layout. #11188

• Memory Footprint in Builder
  [GR-64703] Clear caches after analysis phase. #11177
  [GR-64824] Only compute heap dumping metadata if needed. #11153
  [GR-64675] Remove unused concurrent hashmap PointsToAnalysisMethod.invokedBy #11130
  [GR-64061] Footprint improvements in Native Image Builder. #11116
  [GR-64192] Native Image Builder Memory Footprint Optimizations #11077

• Other & fixes
  [GR-64584] Base-relative code pointers in vtables for non-layered images. #11150: -H:+RelativeCodePointers (relocation improvements, faster startup, more shared memory)
  [GR-34010] Use precise write barriers for Object arrays. #11157
  [GR-64588] Enable RemoveUnusedSymbols on darwin. #11095
  [GR-64965] Do not try to validate type state propagation into disabled flows #11192
  [GR-64208] Reduce virtual calls to Object and reference visitors. #11124
  [GR-64566] Parse system properties before options. #11090

Questions

Deep Dive: Leyden vs. Graal Native Image

Presenter: @simonis
Material: https://github.com/simonis/LeydenVsGraalNative