Native Image Committer and Community Meeting 2025-06-26

[wirthi]

List of all past and upcoming meetings: #3933

The meeting after this one is planned for July 31st, 2025. The meeting will typically be on the last Thursday of each month.

Branch-off for JDK 25 happened. Only fixes fill land there going forward.

New and Noteworthy

• Native Image Layers
  [GR-62449] Ensure that class initialization status is stable between layers. #11303
  [GR-65925] Allow classes with failed initialization to be registered again in the app layer. #11425
  [GR-65847] De-duplicate resources in extension layers #11447
  [GR-63220] Make ModuleLayerFeature layer aware #11263
  [GR-65296] Use implemented interface as differentiator when generating stable lambda name. #11269
  [GR-65934] Ensure LoadImageSingletonNodes are folded in the app layer #11453
  [GR-66296] Remove ReachabilityHandler abstraction. #11450
  [GR-65695] Replace streams with indexed for-loops in layer loader. #11387
  [GR-65232] Refactor layer loader. #11312
  [GR-65242] [GR-60254] Add support for catching missing arrays in hubs in layered images. #11284
  [GR-64959] Support InitialLayerOnlyImageSingleton with different key #11458

• Streamline reachability metadata
  [GR-63591] Include resource bundles in resource configuration #11313
  [GR-48191] Enable lambda reflection queries #11350
  [GR-61098] Make TrackDynamicAccess experimental and make Dynamic Access data structures public #11349
  [GR-63596] Treat "name" entries in legacy configuration files like "type" in reachability-metadata.json #11332

• Usability
  [GR-66330] Improve the trouble-shooting guide for Native Image. #11463 no big change but reminder that the Troubleshooting guide exists
  [GR-65849] Avoid tracing during VM operations. #11416
  [GR-65282] Remove bogus main class detection for NATIVE_IMAGE_OPTIONS. #11395
  [GR-65575] Handle linkage errors in SerializationBuilder#superHasAccessibleConstructor. #11340
  [GR-64619] Make missing registration errors subclass LinkageError #11295

• Monitoring / Tooling
  [GR-65899] JFR substitutions for JDK 25+26. #11403 (Red Hat)

• Debugging

• JDWP
  [GR-66202] Fix step out issue in JDWP. #11449
  [GR-65630] Include loaded array classes in JDWP commands. #11422

• FFM API / Panama
  [GR-63182] [GR-65316] Enable FFM API by default. #11335
  [GR-60208] [GR-52447] Trace FFM API calls in native image agent. #11270
  [GR-65636] Make foreign API support optional in parser. #11355
  [GR-63074] Support FFM API on macOS/x64. #11311

• Garbage Collector / Memory Management
  [GR-32941] Allocate TLABs from chunks instead of as chunks #11275
  [GR-65480] Update TLAB logic to JDK 25+25 and fix gcWaste computation. #11344

• Other & fixes
  [GR-60297] Fix Reachability Analysis in Native Image #11293
  [GR-64981] Reliably detect pending deoptimization and correctly handle speculations and invalidation. #11290 (fix around Lazy Deoptimization)
  [GR-48106] Handle container tool exit code in container-reuse case. #11365
  [GR-65647] Copy MultiOptionValues in HostedOptionCustomizer. #11354
  [GR-65564] Rethrow OutOfMemoryErrors that happen during performance data initialization. #11345
  [GR-65020] [GR-65327] Fixes for java.specification.maintenance.version and reference constants in large images. #11325
  [JDK-8358544] Adapt "JDK-8357987: [JVMCI] Add support for retrieving all methods of a ResolvedJavaType" #11320
  [JDK-8358545] Adapt "JDK-8357660: [JVMCI] Add support for retrieving all BootstrapMethodInvocations directly from ConstantPool" #11319
  [GR-64787] Fixes for --install-exit-handlers removal. #11307

Questions

Deep Dive: Strict Dynamic Access Inference (#11079)

Presenter: Aleksandar Stefanovic (@Aca-S)