Re: master d582356: * src/fns.c (Frandom): Handle bignum `limit`s

[Andrea Corallo]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

>>> I don't think I understand how will we know which function says it
>>> never calls GC.
>> By tagging it in the source code?
>
> Random thoughts on this:
> - AFAIK in the current code, the places where we can't run GC are much
>   more rare than the cases where we can run GC, so we'd be better off
>   trying to annotate the places where it can't happen.
> - Those places are currently not annotated at all, by and large.
>   There are a few comments here and there stating that GC shouldn't
>   happen, but those comments shouldn't be trusted.
> - The trend is to reduce the amount of code where GC cannot take place
>   [ I think and I hope.  ]

I hope too, I believe this is the main barrier in trying to transition
to a parallel GC (thing that on the paper shouldn't be that complex).

  Andrea