Re: [ANN] article: Structured concurrency and Lua

[Jorge Visca <xxopxe@...>]

On 9/9/22 11:57, John Belmonte wrote:
> I'm sharing a draft article "Structured concurrency and Lua (part 1)".
>
> https://gist.github.com/belm0/4c6d11f47ccd31a231cde04616d6bb22


Very interesting! I wrote a coroutine base scheduler 
(https://github.com/xopxe/Lumen) but it was pre-to-be-closed.

How I would implement your first example would be using signals: all 
tasks emit a special signal when finishing, (and another when errore'd). 
So you'd start all tasks and then wait for finalization signals in a 
loop keeping track of who finished. Much more burdensome. All in all, I 
love the concept of using the scope of variables to control the lifetime 
of high-level objects.

As a detail I see you register signals with the scheduler, I registered 
"wait descriptors" and signals can be anything. A wait descriptor 
contains the set of signals you're waiting on, plus timeout, plus an 
optional signal buffer where they are stored while the program is 
waiting somewhere else. I wonder how would you handle waiting on several 
signals?


Jorge