Date: Tue, 29 Nov 2005 23:02:21 +0100 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: John Polstra <jdp@polstra.com> Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/sys time.h src/sys/kern kern_time.c Message-ID: <4057.1133301741@critter.freebsd.dk> In-Reply-To: Your message of "Tue, 29 Nov 2005 13:42:56 PST." <XFMail.20051129134256.jdp@polstra.com>
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In message <XFMail.20051129134256.jdp@polstra.com>, John Polstra writes: >On 28-Nov-2005 Poul-Henning Kamp wrote: >> I've looked a lot at this in the ISC eventlib (bind8) but there is >> no way to save one timestamp per iteration without getting creeping >> imprecision in the timer controlled events. > >Would it help if we had something like select/poll that took an >absolute time (a deadline) instead of a timeout -- as is done by >pthread_cond_timedwait? There are indeed many ways this could be done, but it won't help much in practice when libisc is written to be portable over a wide range of operating systems. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@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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