Date: Tue, 8 Jul 2003 09:23:20 -0400 From: John Baldwin <jhb@FreeBSD.org> To: Terry Lambert <tlambert2@mindspring.com>, deischen@FreeBSD.org Cc: threads@FreeBSD.org Subject: Re: libc_r silliness Message-ID: <200307080923.20011.jhb@FreeBSD.org> In-Reply-To: <3F0A9E8E.99CA9BD@mindspring.com> References: <Pine.GSO.4.10.10307071543570.15065-100000@pcnet5.pcnet.com> <3F0A9E8E.99CA9BD@mindspring.com>
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On Tuesday 08 July 2003 06:35 am, Terry Lambert wrote:
> Daniel Eischen wrote:
> > On Mon, 7 Jul 2003, John Baldwin wrote:
> > > > I don't really know how to handle this. We can wrap
> > > > sched_get_priority_{min,max}(), but how do we know whether
> > > > the application wants process priorities or thread
> > > > priorities?
> > >
> > > Ugh. Perhaps the manpage should at least be updated to not
> > > reference the macros. What does POSIX say about the confusion
> > > between sched_get_priority_{min,max}?
> >
> > Sure, update the man pages if you want ;-)
> >
> > I have not found anything yet regarding sched_get_priority_{min,max}
> > confusion in the POSIX spec...
>
> http://www.opengroup.org/onlinepubs/007904975/functions/sched_get_priority_
>max.html
>
> The functions take a policy parameter; they are supposed to
> return "appropriate" values, which I took to mean "appropriate
> to the policy parameter supplied at the time they were called":
>
> int sched_get_priority_max(int policy);
> int sched_get_priority_min(int policy);
>
> The sched_get_priority_max() and sched_get_priority_min()
> functions shall return the appropriate maximum or minimum,
> respectively, for the scheduling policy specified by policy.
Yes, but in a multithreaded program when I call
sched_get_priority_max(SCHED_RR), does that tell me the maximum process
SCHED_RR priority for use with sched_setschedparam() or does it tell me the
maximum thread SCHED_RR priority for use with pthread_setschedparam()?
--
John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!" - http://www.FreeBSD.org/
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