Re: [Chicken-users] object-evict, string ports, safe-foreign-wrapper, foreign-primitive, Cheney on the Victoria Line, etc (was: What happens to a (non-simple) Scheme object sent to a foreign function?)

[Thomas Christian Chust]

Tony Sidaway wrote:

> [...]
> My current thought is this:  In step 1, I pass the library a key (in
> static memory, not heap) which I associate with the port (I place the
> actual port in a srfi-69 hash table under that key).  On receiving the
> key, in stage 2, my write procedure (which would ideally be written in
> Chicken as a safe-foreign-wrapper procedure) would pick the port out
> of the hash table using that key, and write the string using a method
> compatible with Chicken's port mechanism.
> [...]

Hello,

for a similar technique of callback management you may want to have a
look at the implementation of the SQLite3 egg, which allows you to
define arbitrary new SQL functions in Scheme using
sqlite3:define-function and associates...

cu,
Thomas