Re: [PATCH BlueZ 01/12] attrib/gattrib: Add g_attrib_get_att.

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Hi Arman, Luiz:

On Wed Nov 19 2014 at 7:05:50 AM Luiz Augusto von Dentz
<luiz.dentz@xxxxxxxxx> wrote:
>
> Hi Arman,
>
> On Mon, Nov 17, 2014 at 9:22 PM, Arman Uguray <armansito@xxxxxxxxxxxx> wrote:
> > Added the g_attrib_get_att function which returns the underlying bt_att
> > structure associated with a GAttrib.
> > ---
> >  attrib/gattrib.c | 8 ++++++++
> >  attrib/gattrib.h | 3 +++
> >  2 files changed, 11 insertions(+)
> >
> > diff --git a/attrib/gattrib.c b/attrib/gattrib.c
> > index ce7f7b3..a446ae6 100644
> > --- a/attrib/gattrib.c
> > +++ b/attrib/gattrib.c
> > @@ -166,6 +166,14 @@ GIOChannel *g_attrib_get_channel(GAttrib *attrib)
> >         return attrib->io;
> >  }
> >
> > +struct bt_att *g_attrib_get_att(GAttrib *attrib)
> > +{
> > +       if (!attrib)
> > +               return NULL;
> > +
> > +       return attrib->att;
> > +}
> > +
> >  gboolean g_attrib_set_destroy_function(GAttrib *attrib, GDestroyNotify destroy,
> >                                                         gpointer user_data)
> >  {
> > diff --git a/attrib/gattrib.h b/attrib/gattrib.h
> > index 2ed57c1..374bac2 100644
> > --- a/attrib/gattrib.h
> > +++ b/attrib/gattrib.h
> > @@ -31,6 +31,7 @@ extern "C" {
> >  #define GATTRIB_ALL_REQS 0xFE
> >  #define GATTRIB_ALL_HANDLES 0x0000
> >
> > +struct bt_att;  /* Forward declaration for compatibility */
> >  struct _GAttrib;
> >  typedef struct _GAttrib GAttrib;
> >
> > @@ -47,6 +48,8 @@ void g_attrib_unref(GAttrib *attrib);
> >
> >  GIOChannel *g_attrib_get_channel(GAttrib *attrib);
> >
> > +struct bt_att *g_attrib_get_att(GAttrib *attrib);
> > +
> >  gboolean g_attrib_set_destroy_function(GAttrib *attrib,
> >                 GDestroyNotify destroy, gpointer user_data);
> >
> > --
> > 2.1.0.rc2.206.gedb03e5
>
> Im not following you here, why you want to expose bt_att via GAttrib,
> isn't it better to just have a g_attrib_get_fd if you just need to
> access the fd?
>
>
> --
> Luiz Augusto von Dentz

It's my understanding that the g_attrib_get_att function is needed in
the transition from GAttrib to bt_att.  For now the GAttrib creates
the bt_att, but eventually device_attach_attrib will create the bt_att
on it's own once GAttrib is not needed anymore.  I don't have an issue
with the reference semantics as long as it's clear.

 Mike
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