Date: Wed, 17 Feb 1999 21:40:33 -0700 From: Warner Losh <imp@village.org> To: Dag-Erling Smorgrav <des@flood.ping.uio.no> Cc: hackers@FreeBSD.ORG Subject: Re: portability of shm, mmap, pipes and socket IPC Message-ID: <199902180440.VAA64853@harmony.village.org> In-Reply-To: Your message of "10 Feb 1999 15:30:07 %2B0100." <xzp1zjybabz.fsf@flood.ping.uio.no> References: <xzp1zjybabz.fsf@flood.ping.uio.no> <199902092246.PAA10658@usr02.primenet.com> <199902100403.MAA55849@spinner.netplex.com.au> <19990210085847.A11710@gil.physik.rwth-aachen.de> <199902100907.BAA79553@apollo.backplane.com>
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In message <xzp1zjybabz.fsf@flood.ping.uio.no> Dag-Erling Smorgrav writes: : Matthew Dillon <dillon@apollo.backplane.com> writes: : > The problem is that linux updates the timeval structure on return, : > telling you how much time is left. : : Yup. I wish FreeBSD did that - the man page already states that one : shouldn't rely on tv not being modified, so it shouldn't break POLA. No. I would think that changing it would violate POLA. Changing tv is bogus because it is only a lower bound, especially if you have multiple things running on the system. It creates a race condition that cannot be avoided, which is why it likely wasn't done in the first place. Warner To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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