On 2/5/07, felix winkelmann [EMAIL PROTECTED] wrote:
Another option would be to create a GC root (CHICKEN_new_gc_root)
and keep it on the C-side (you have to pass the argument string as
a scheme-object, then create the GC-root from it). Later, you can
access the gc root (CHICKEN_gc_root_ref) and
On 2/4/07, Thomas Christian Chust [EMAIL PROTECTED] wrote:
the address of the C function wrapping the define-external'ed Scheme
procedure is unproblematic, because it will never change. The pointer to
the C string data may become invalid, though, once the program returns
from the library call.
I'm sending a Scheme string to a foreign (C) library as a c-string.
I also send it the address of a Scheme procedure created as
define-external--this address is sent as a c-pointer.
Later on I call a safe-foreign-lambda which will use the Scheme
function whose address I sent it as a callback,
