Native Image Committer and Community Meeting 2023-05-04

[christianwimmer]

List of all past and upcoming meetings: #3933

New and Noteworthy

• GraalVM 23.0: Release delayed to June 13. So bugfixes are still possible to merge, no new branching off from master though.

• Compiler source code restructuring towards OpenJDK
  [GR-45165] Consolidated Graal module sources to jdk.internal.vm.compiler. #6503

• Use new JVMCI API (already introduced a while ago, but now available in all necessary OpenJDK and Oracle Java versions):
  [GR-45667] Use JVMCI API for retrieving ConstantValue attributes. #6463
  [GR-43174] Use new JVMCI API. #6480
  [GR-43174] Only use getDeclaredMethods/getDeclaredConstructors that do not force linking. #6481

• Final cleanups for annotation handling:
  [GR-45627] Remove obsolete annotation support. #6436
  [GR-39848] Disallow getAnnotations for analysis and hosted elements. #6399

• Performance
  [GR-34212] Populate Throwable.stackTrace lazily #6533
  [GR-45349] Make the core part of the serial GC uninterruptible. #6374

• Compatibility:
  [GR-45909] Remove type checks from JNI to-Java call stubs, which can break compatibility. #6524 Native image used to check the types of parameters when invoking a Java method from C. But since HotSpot does not do the check, real-world code fails because it calls methods with wrong types.
  [GR-43930] Enable partial missing registration options #6448
  [GR-45860] Ignore SIGXFSZ signal. #6542

• Other
  [GR-45673] Tweak GC settings of Native Image builder. #6432

• Monitoring / tools:
  [GR-43934] Only build full FrameTree when OmitInlinedMethodDebugLineInfo is false. #6504
  [GR-45718] Improve heap and stack verification. #6475
  [GR-40263] Provide JSON schemas for Native Image config files #6543

Deep Dive: Class initialization

Recap: #4684

Most things work well when enabling the new class initialization strategy by default: #6544

Simulation of class initializer at image build time is necessary for performance, implementation is in progress. So get started on testing the new class initialization strategy!

Possible deep dive topics for next meeting

Please send suggestions in the GraalVM Slack channel