How would you add parallel execution?

[RudolfVonKrugstein]

Thanks for the great project!

I am currently evaluating otto to use as a scripting language for a simple application that executes small scripts on events (the events are button presses on a elgato stream deck).

It works very well so far!

In general the scripts are very short and can be executed one after the other, but I also want to have longer running processes, like starting a countdown. And while these processes runs, it should be possible to press other buttons and start other processes in parallel.

Now I am thinking about how to approach that, and maybe someone with experience with otto would be so kind to give me some advice?

Here are my ideas:

1. Create a go routine and a otto VM for every button press and execute the buttons script in that VM. Is that a good Idea? I also need some simple mechanism for global variables, but I could add functions (setGlobal, getGlobal) to the VM to have this functionality.
2. Create a go routine for every button but reuse one otto VM. I tried that, it works. But I guess that is not intended usage and might introduce all sorts of unexpected bugs.
3. Implement an event loop (like in http://github.com/robertkrimen/natto). This is my favorite option. But since otto does not support await/async syntax, this makes the script harder to write for inexperienced script writers and I want to keep the writing of the scripts as simple as possible.

So I am hoping I am not rude by asking for advice. And thanks for again this great project and all the work that went into it.

[stevenh]

All of the options you have listed sound reasonable, but this is really for issues not advice on use, I suggest you use https://stackoverflow.com/ for that.