Check this article
http://factor-language.blogspot.com/2009/08/new-tool-for-locating-external-resource.html?m=1
might help managing object lifetimes and clean up.
On Feb 24, 2017 4:21 PM, "John Benediktsson" <mrj...@gmail.com> wrote:
I'm not aware of any libsodium bindings, but that should be pretty easy to
do with the ``alien`` FFI vocabulary.
Also, related, is you can call any C function you want, and then hold onto
its return result as an alien pointer, so essentially unmanaged memory. If
you were to convert that memory into a Factor object (like byte-array or
struct), probably that would copy the memory and be subject to GC. I'd
have to look into it, but maybe struct pointers would allow convenient use
from Factor while also keeping the memory separate.
On Fri, Feb 24, 2017 at 3:12 AM, Alexander Ilin <ajs...@yandex.ru> wrote:
> Hello!
>
> Two questions:
> 1 - do we have bindings to the libsodium library?
> 2 - is it possible to make sure a chunk of memory doesn't get copied by
> the GC?
>
> The first question is about this project that's gaining well-deserved
> traction: https://download.libsodium.org/doc/
> The second question is about a piece of memory that's supposed to hold a
> secret key, and I want to make sure it only ever exists in one copy, so
> that if I erase it, it's really gone. AFAIR in Factor we have a copying GC,
> so I'd like to somehow exempt this key from its processing (mark it
> non-moveable, or something). Do we have a provision for such a use case,
> and if not what would be a good way to achieve what I want in Factor?
>
> ---=====---
> Александр
>
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