On Jun 10, 2016 1:55 AM, "Davide Andreoli" <d...@gurumeditation.it> wrote:
>
> 2016-06-10 4:10 GMT+02:00 Jean-Philippe André <j...@videolan.org>:
>
> > Hi,
> >
> >
> > This is bu5hman's idea mostly, but I'd like to bring the question to the
> > attention of everyone, as I had the same idea before.
> >
> > For simple structs (think Eina.Rectangle, and Efl.Gfx.Color), would it
be
> > acceptable to pass them by value instead of reference, in C?
> > That is:
> >
> > Eina_Rectangle a = {1, 2, 3, 4};
> > rect_set(obj, rect);
> > Eina_Rectangle b = rect_get(obj);
> >
> > Or even (non portable way, but applications could feel free to use
this):
> > rect_set(obj, (Eina_Rectangle){.w = 13, .h = 37});
> >
> >
> > I understand this could simplify some code.
> >
> >
> > My main problem with it is a concern about ABI compatibility. It seems
GCC
> > itself has various ways to pass structs by value. See:
> >
> >
http://stackoverflow.com/questions/161788/are-there-any-downsides-to-passing-structs-by-value-in-c-rather-than-passing-a
> >
> >
> > Does anyone have real-life knowledge about this? How is it on Windows?
> > Any strong arguments in favor or against?
> >
>
> I'm against this changes for 2 main reason:
> 1. API coherence: if we use rect, color, and maybe pos in some api, then
we
> should use them
> in ALL the api that use rect, color, geom, etc... this will be a massive
> change.
> 2. Will make bindings a lot slower, for each function call we need to
> allocate the struct, fill with value
> provided by user and pass this struct to the C function.. and then free
it.
> All this for each function call.Why would bindings allocate and free? Why not just pass by value too? How is that any different for bindings. By value is likely faster with small structs if anything. > just my 2 cents > > > > > > > > -- > > Jean-Philippe André > > > > ------------------------------------------------------------------------------ > > What NetFlow Analyzer can do for you? Monitors network bandwidth and > > traffic > > patterns at an interface-level. Reveals which users, apps, and protocols > > are > > consuming the most bandwidth. Provides multi-vendor support for NetFlow, > > J-Flow, sFlow and other flows. Make informed decisions using capacity > > planning reports. https://ad.doubleclick.net/ddm/clk/305295220;132659582;e > > _______________________________________________ > > enlightenment-devel mailing list > > enlightenment-devel@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/enlightenment-devel > > > ------------------------------------------------------------------------------ > What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic > patterns at an interface-level. Reveals which users, apps, and protocols are > consuming the most bandwidth. Provides multi-vendor support for NetFlow, > J-Flow, sFlow and other flows. Make informed decisions using capacity > planning reports. https://ad.doubleclick.net/ddm/clk/305295220;132659582;e > _______________________________________________ > enlightenment-devel mailing list > enlightenment-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/enlightenment-devel ------------------------------------------------------------------------------ What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports. https://ad.doubleclick.net/ddm/clk/305295220;132659582;e _______________________________________________ enlightenment-devel mailing list enlightenment-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/enlightenment-devel
