Re: [Vala] Further speculations on couroutines, generators and threads : Emulating Go's goroutines and channels in Vala

[Jim Peters <jim uazu net>]

Luca Bruno wrote:
> > No, I don't have a benchmark, but a Thread is actually a kernel
> > process on Linux, whereas a goroutine could be just an allocated
> > mini-stack of 100 bytes (assuming enough static analysis to figure out
> > required stack depth) and some housekeeping structures.  Switching
> > between threads means waiting for the Linux kernel to schedule it.
> > Switching to/from a go/coroutine could be a longjmp (having read some
> > of the Pth implementation stuff).
> >
> > To me it seems that they would not be comparable in efficiency.
>
> Threads are allocated on multiple cores nowadays and you can use lock-free
> data structures when possible. Still you didn't provide any benchmark,
> only thoughts.

We are both putting forward "only thoughts".

To prove my point I will have to implement simple coroutines in Vala
using low-level C stuff, i.e. setcontext/makecontext/etc.  I guess a
Coroutine class could be useful for something someday.  Give me a
moment ...

Jim

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