3 ms·

Thanks for the tip, stackless coroutines are new to me. Any of that on the Rust roadmap?

• Scramblejams 11y ago
  Am I correct that coroutines are intrinsically non-preemptive? If so, I'll need to keep looking.
  • ansible 11y ago
    Am I correct that coroutines are intrinsically non-preemptive? If so, I'll need to keep looking. That's usually the case. Coroutines have their uses, but having used goroutines, that is my current preference.
    • pcwalton 11y ago
      Coroutines are preemptible at I/O boundaries or manual synchronization points. Those synchronization points could be inserted by the compiler, but if you do that you're back into goroutine land, which typically isn't better than 1:1. In particular, it seems quite difficult to achieve scalability to millions of threads with "true" preemption, which requires either stacks or aggressive CPS transformation.