Hi
On Wed, Jul 3, 2024 at 4:48 PM Marc-André Lureau <marcandre.lur...@gmail.com>
wrote:
> Hi
>
> (adding Sebastian, one of the glib-rs developers in CC)
>
> On Mon, Jul 1, 2024 at 7:02 PM Paolo Bonzini <pbonz...@redhat.com> wrote:
>
>> The qemu::util::foreign module provides:
>>
>> - A trait for structs that can be converted to a C ("foreign")
>> representation
>> (CloneToForeign)
>>
>> - A trait for structs that can be built from a C ("foreign")
>> representation
>> (FromForeign), and the utility IntoNative that can be used with less
>> typing
>> (similar to the standard library's From and Into pair)
>>
>> - Automatic implementations of the above traits for Option<>, supporting
>> NULL
>> pointers
>>
>> - A wrapper for a pointer that automatically frees the contained data. If
>> a struct XYZ implements CloneToForeign, you can build an
>> OwnedPointer<XYZ>
>> and it will free the contents automatically unless you retrieve it with
>> owned_ptr.into_inner()
>>
>
> [...] Also, you don't offer the equivalent of "to_glib_none" which uses a
> temporary stash and is quite useful, as a majority of functions don't take
> ownership.
>
I realize this may be somewhat offered by OwnedPointer (although not
mentioned explicitly in the doc). Its usage seems unsafe, as you have to
handle the foreign pointer lifetime manually...
--
Marc-André Lureau
