On Monday, September 14, 2015 at 6:20 AM, Paul Koning wrote:
> > On Sep 14, 2015, at 12:53 AM, Mark Pizzolato - Info Comm
> <[email protected]> wrote:
> >
> > ...
> > Paul said:
> >> We have a context pointer in
> >> the device, but not in the unit (I ended up having to abuse the
> >> filebuf for that).
> >
> > Reusing the filebuf could certainly be used for an arbitrary context
> > variable if it
> isn't being used otherwise. Alternatively fileref can optionally also not be
> a FILE
> *. When it isn't a FILE *, the unit->dynflags UNIT_NO_FIO flag should be set.
> When set, it becomes a unit specific void * which can be used for context or
> anything else.
>
> Ok. This is another example of something undocumented.
True.
Meanwhile, I was thinking this over one more time and I realized that I had
forgotten that there are already 2 user/device specific void pointers in the
UNIT structure:
uptr->up7
uptr->up8
Do with them as you wish.
- Mark
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