Issue #10344 has been updated by naruse (Yui NARUSE).


ko1 (Koichi Sasada) wrote:
> naruse (Yui NARUSE) wrote:
> > @ioquatix Is this feature accepted by matz?
> > A change which is visible from Ruby and non trivial bugs requires matz's approval.
> 
> this is a support comment.
> 
> Matz agreed this feature several years ago (maybe I'm only person against, and I also agree to introduce this feature now, except naming issue. but nobody except me has no objection :p)
> I'm not sure about naming issue, but he doesn't say anything last time.
> 
> Anyway, it is safe to discuss at next dev meeting (I will speak for Samuel).

Sure, thank you for comment.

ioquatix (Samuel Williams) wrote:
> Thanks I didn”Ēt know approval procedure.
> 
> I will update NEWS one I”Ēm sure the feature has stabilised.

Anyway please update NEWS now to avoid forgetting adding the description.

----------------------------------------
Feature #10344: [PATCH] Implement Fiber#raise
https://bugs.ruby-lang.org/issues/10344#change-76017

* Author: nome (Knut Franke)
* Status: Closed
* Priority: Normal
* Assignee: ioquatix (Samuel Williams)
* Target version: 2.7
----------------------------------------
While it is possible to implement this in pure Ruby (by wrapping Fiber.yield and Fiber#resume), this feels like a low-level feature that ought to be provided out of the box. Also, the C implementation is more straight-forward, and more efficient. Unfortunately, it is not quite possible to implement this as a C extension module (without resorting to wrappers again); cf. the change to make_passing_arg().

Example usage:

~~~
fib = Fiber.new do
  counter = 0
  loop { counter += Fiber.yield }
  counter
end
fib.resume
fib.resume 10
fib.resume 100
fib.raise StopIteration # => 110
~~~

---Files--------------------------------
0001-Implement-Fiber-raise.patch (4.12 KB)
0001-Implement-Fiber-raise.patch (3.51 KB)
0001-Implement-Fiber-raise-in-ext-fiber.patch (3.6 KB)


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