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Coroutines can be divided into two categories, stackless and stackful. goroutines are stackful coroutines.

• jpc0 3y ago
  Except goroutines will absolutely spawn a thread which a coroutine by definition wont. Goroutines are parallel, coroutine are concurrent. Those are not the same thing. Coroutines co-operatively yeild to other coroutines. Parallel constructs run in parallel at the same time. Goroutines can run in parallel at the same time and thus are not a coroutine.
  • gpderetta 3y ago
    My understanding is that goroutines don't spawn threads per-se. They can be executed on parallel event loops, but that can be true for stackess coroutines in c++ for example.
    • jpc0 3y ago
      Yeah goroutines are a pretty high level abstraction but they are definitely closer in concept to green threads than to coroutines. You can run a C++ coroutine on a seperate thread but you effectively need to build all the task handling logic yourself of use a library that's build that out. Goroutines you don't need to use a specialised sleep fuction which is actually changing coroutine state, setting a timer and yeilding. You just sleep as an example