Native Image Committer and Community Meeting 2024-04-04

[christianwimmer]

List of all past and upcoming meetings: #3933

New and Noteworthy

• Layered native images:
  [GR-49708] Implement open type world virtual method dispatch #8558

• Special exceptions for missing configurations:
  [GR-50259] Throw exceptions for missing resource bundle registrations #8059
  [GR-50434] Introduce more flexible type descriptors for JSON configuration #8369

• Fixes in the C interface, especially signeness of sub-integer types:
  [GR-52131] Various fixes for @CConstant, @CField, @RawField, @CEnum, @CBitfield, and CConstantValueSupport. #8670 is the complete fix for the master branch
  [GR-51785] Change CCharPointer from "char" to "signed char". #8658 simple fix that can be backported

• Windows unwind information support:
  [GR-51560] Simplify rbp handling in prologues/epilogues. #8660

• Usability:
  [GR-52578] Dump All Registered Resources #8676
  [GR-52975] Retain LC_ variables when sanitizing the environment for the image builder. #8665
  [GR-52456] Add weekly workflow for reachability metadata. #8585
  [GR-51086] Introduce --static-nolibc API option. #8553

• Performance / Image size
  [GR-52732] Optimize stack trace information for implicit exceptions. #8675

• Compatibility
  7b51429 Support JEP 424 ("Panama") foreign upcalls in Native Image

• Cleanups:
  [GR-48116] Remove IntrinsifyMethodHandlesInvocationPlugin. #8582
  [GR-51895] Remove use of old method handle intrinsification. #8518

• Monitoring / tools:
  [GR-52942] Add JFR events and track peak usage for native memory tracking. #8668
  [GR-52484] Partial support for physical memory usage and JFR tests for periodic native events. #8666
  [GR-47371] Add perf documentation. #8563

Deep Dive: Windows unwind information

We'll show the current state of support for generating Windows unwind information, which is already quite functional, and take a closer look at Substrate VM-specific implementation details.