On Tue, Feb 12, 2013 at 2:38 PM, Nathan Hjelm <hje...@me.com> wrote:
>
> On Feb 12, 2013, at 3:41 AM, Kustaa Nyholm <kustaa.nyh...@planmeca.com>
> wrote:
>
> > On 12.2.2013 12.29, "Hans de Goede" <hdego...@redhat.com> wrote:
> >>
> >> I know, but I'm operating under the assumption that Nathan will
> eventually
> >> do a libusb release with his code, at which point having API
> compatibility
> >> would be good. And yes I know we don't completely agree on this :)
> >
> > I disagree having API/ABI compatibility for new features, even in
> > libusbx-1.0.x line of development, the sooner we break it the
> > better, now we are towing to their (libusb) decision making and that
> > what we wanted to get rid of when we forked. See below:
> >
> >>
> >> LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED: A device has arrived and is ready
> to
> >> use
> >> LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT: A device has left and is no longer
> >> available
> >>
> >> Not the best names ever, I would have called them ADDED / REMOVED
> >
> > see, stupid names but if we are stuck if we want to maintain API
> > compatibility
> > with libusb.
>
> Using descriptions like "stupid" for the proposed event names does nothing
> to advance the discussion on what the API for libusb 1.0 should look like.
> You, and others, have been given (and still have for a short time) an
> opportunity to help define the official hotplug interface for the libusb
> 1.0 API. I like the names ARRIVED/LEFT as they reflect more than just the
> device has been plugged in/unplugged. Device arrival signals the device was
> plugged in, enumerated by the os, matched by os drivers (if any exist), and
> finally enumerated by libusb. Left was chosen to match. We could still use
> ADDED/REMOVED (or MATCHED/TERMINATED, ENUMERATED/TERMINATED, etc) if that
> is what developers would rather see as part of the API.
>
"USB Complete Fourth Edition" titles a section "Detecting Attachment and
Removal", so there is another choice.
I would prefer something that did not imply a physical action for a device
that was just plugged in/turned on/enabled/whatever caused it to show up.
I'd suggest AVAILABLE. I can't think of anything better than UNAVAILABLE
for a device that has gone away for whatever reason, but REMOVED would be
OK too.
Orin.
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