[gambit-list] FFI and scheme-object

Diogo F. S. Ramos diogofsr at gmail.com
Tue Apr 5 09:06:48 EDT 2011


Alex Queiroz <asandroq at gmail.com> writes:

> On Tue, Apr 5, 2011 at 2:23 AM, Diogo F. S. Ramos <diogofsr at gmail.com> wrote:
>>
>> I was looking around the examples from the distribution and I found
>> (##still-copy), which made my code work, but I don't know why, and I
>> couldn't find any mention of it inside the manual.
>>
>
>      Gambit uses a copying garbage collector, and therefore move
> objects in memory. ##STILL-COPY copies the object to a memory location
> from where it won't be moved again. So I guess a garbage collection is
> happening after the call to MAKE_BOOK.

I see. Nice.

Is this the right way to do it?

I mean, whenever I create a scheme object that I want to return to C
code, but I don't want to make a conversion to a C type like a struct
because I only access its values using accessors, should I call
(##still-copy) when returning it?

-- 
Diogo F. S. Ramos



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