Project Loom Update

on YouTube ↗42m

" summary

Project Loom adds lightweight user threads (fibers) to the JVM by building fibers from continuations + scheduler that run on a smaller set of OS carrier threads, with the current prototype already supporting tens of millions of fibers in principle. Implemented pieces include blocking-friendly java.net and java.nio changes, fiber scopes for structured concurrency with cooperative cancellation and deadlines, and a thread-object inflation shim to preserve legacy APIs. Remaining problems: can't yield while holding a monitor (native-frame and monitor limitations), methodhandle migration, and ongoing performance tuning (lazy-copy, generated freeze code, processor-local experiments).

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" chapters (8)

1. 0:00Start
2. 2:01How Are Fibers Implemented
3. 11:24Structure Concurrency
4. 29:41Debugger Support
5. 31:44Conformation Freezing
6. 32:43Lazy Copy
7. 35:00Freezing the Objects
8. 41:33Next Steps

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