Untangled: Sneak peek at Project Loom

on YouTube ↗29m

" summary

Project Loom brings user‑space fibers (built on continuations) to the JVM and shows a working OpenJDK prototype that runs synchronous-style code on a tiny thread pool. A demo replaces a blocking implementation that spawned 800 threads for 200 clients with a fiber scheduler that uses about 12 kernel threads (one per core) and handles many clients without rewriting logic; prototype builds are available from an early‑access OpenJDK branch.

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" chapters (6)

1. 0:00Start
2. 17:41Continuation Passing Style
3. 19:15Finished State Machine
4. 19:37Implement an Iterator as a State Machine
5. 24:22State of the Loom
6. 27:04Structural Concurrency

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