On Tue, Mar 25, 2008 at 03:45:54PM -0700, Steven Dake wrote:
> Placing the callback in track would work, however the track function
> would have to return a new handle type "dataconf_track_handle_t" so that
> later that same handle's tracking could be stopped.
First, you could cancel by xml_request, or by function,data
tuple, or whatever. But you are right,and this even leads to my other
email, proposing you return the handle on the track() call rather than
init(&handle); track(handle, request);
At its core, I didn't realize you were doing it this way. I was
assuming a global handle you'd open once.
> >From an implementation perspective doing this would be highly painful,
> but could possibly make the api user's life easier. But then if we were
> to do that we may need no dataconf_handle_t type at all since there is
> only one dispatch function.
I think we're circling around the same thing. But it begs
another question. I was assuming a global handle because having a
handle-per-track leads to 100s of file descriptors. And now we're
actually approaching places where efficiency is a problem. 100s or
1000s of file descriptors take kernel memory, especially if they have
IPC buffers associated with them.
Joel
--
Life's Little Instruction Book #232
"Keep your promises."
Joel Becker
Principal Software Developer
Oracle
E-mail: [EMAIL PROTECTED]
Phone: (650) 506-8127
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