a proposed callout API
Poul-Henning Kamp
phk at phk.freebsd.dk
Wed Nov 29 11:45:50 PST 2006
In message <200611291346.01246.jhb at freebsd.org>, John Baldwin writes:
>Different APIs would be fine. IIRC, that's how Darwin does it. With the
>tick_t idea, you could easily have:
>
>tick_t relative_wakeup(ulong nsec)
>tick_t absolute_wakeup(struct timeval *tv) (or something else, etc.)
I really do not want to encode the rel/abs aspect in the tick_t.
I want it marked up directly in the flags passed which kind of behaviour
the code wants.
>walltime timeouts (such as for TCP as Poul-Henning mentioned). I like tick_t,
>I just want to make sure we change foosleep() to use it as well, and wanted to
>raise the idea of relative vs absolute deadlines.
Agreed, foosleep() should take tick_t as well.
I propose you and I write up the new API in detail and then present
that document here on arch@ at a latter date.
Is that OK with you ?
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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