Re: [Chicken-users] Re: srfi-47

[felix]

Daniel B. Faken wrote:
> Felix,
>
>   By the way, a feature suggestion (noch einmal):
>     * make the chicken_is_running variable available somehow

Ok.

>     * allow another Easy-FFI keyword and foreign-lambdaXXXX mode
>     which checks if chicken is currently running (i.e. from some
>     entry point or as main()) and invokes an *embedded* version
>     of the C code if it isn't.
>       (the idea for the FFI is something like the current "__callback"
>     keyword).

So, that one can differentiate between the two modes when C code is running
as a driver (i.e. toplevel) or whether it is invoked in a callback, right?
>   I suggest this because I'm using chicken in embedded mode, and
> sometimes I can't tell if I'm calling *back* into chicken, or
> *invoking* chicken (and calling the wrong one crashes things..).
>   I currently address this by having two copies of each of my exported
> functions: one via 'define-embedded' and one via 'define-external'.
> They all check my own version of the 'chicken_is_running' variable.
> Currently there are only three fns, but this becomes a problem with more.
> Have I overlooked an existing solution?

No, your request is very reasonable.

>   I think this would be generally useful, too.. and unify embedded
> entry points with the FFI interface.

I'll give it a look. Thanks for your suggestion!


cheers,
felix