Thread

Go Concurrency Distilled

402 points · 187 comments · chmaynard

SamInTheShell · 1790469542 · focus · HN ↗
The concurrency and threading in Go just feels like magic compared to every other language. I'm a goroutine addict and I refuse to be rehabilitated.
Just from observations over the years, I don't think there's any other language quite like this, in terms of how things can end up happening in any thread.
1. osigurdson · 1790472477 · focus · HN ↗
  >> in terms of how things can end up happening in any thread
  Doesn't that describe pretty much any green thread style concurrency implementation.
  1. dlisboa · 1790477447 · focus · HN ↗
    No. Preemptive scheduling plus M:N mapping combination that Go has is not common in other major implementations.
    Other languages and their implementations of green threads usually have cooperative scheduling or M:1 mapping
    za3faran · 1790483800 · focus · HN ↗
    Java's virtual threads are M:N.
    ackfoobar · 1790490570 · focus · HN ↗
    >> Preemptive scheduling plus M:N mapping
    AFAIK, in the current implementation, Java's virtual threads yields only when they block (cooperative). But the spec allows a JVM to implement them as preemptive.
    gf000 · 1790512133 · focus · HN ↗
    Well, they do only yield on block and whatnot, but that's very much different from adding manual async/await keywords, I would say.

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