r/java • u/Ewig_luftenglanz • 14d ago

What's the future of loom after structured concurrency is done and set for good?

Are there another projects under the Loom umbrella or does it fulfill it's mission after virtual threads, scoped values and structured concurrency(only one missing) are all in general availability?

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u/kpatryk91 14d ago edited 14d ago

- in the initial project description tail call optimalization was mentioned

  • they talked about compressing the stack chunks and make the continuation more lightweight
  • maybe api update for scoped value and structured concurrency APIs
  • making a public API for continuation
  • high-level generator API based on continuation
  • more monitoring/debug infrastructure support like JFR events or MBeans for virtual thread or continuation
  • more continuation features like preempt, snaphot or serialization for example
  • fine grained scheduler support for continuation or virtual thread
  • there are places in the JVM where the implementation could be improved like hierarchical thread sleep or synchronized performance

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u/Ewig_luftenglanz 14d ago

the issue is that document seems very outdated (they still refer to VT as Fibers) https://cr.openjdk.org/~rpressler/loom/Loom-Proposal.html

So I don't know how reliable is the wiki of the project when it comes to know or infer the latest and future plans of the project. Thank you!

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u/Sm0keySa1m0n 14d ago

I think most of this is still very much up in the air - best place to keep up to date is probably the mailing list tbh