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Date: Thu, 23 Jul 2015 10:59:25 -0400
Message-ID: <CAKFCL4X3N91vgN+fjRAyeFFjtbb6_KDrCyDEgoWfuyULrrwwUQ@mail.gmail.com>
Subject: Re: struct timehands: th_generation field
From: Brandon Allbery <allbery.b@gmail.com>
To: deco33000@yandex.com
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On Thu, Jul 23, 2015 at 10:38 AM, <deco33000@yandex.com> wrote:

> Is the maximum value for th_generation equal to 10 ?
> http://fxr.watson.org/fxr/source/kern/kern_tc.c?v=FREEBSD10#L77
>

I don't think those relate to generations. Generations change on every
clock tick; the multiple timehands structs relate to forcibly setting the
time, as opposed to the clock moving forward normally. It does appear serve
a similar purpose, since forcibly setting the time is even more "violent"
(to anything currently reading the clock) than advancing the clock on a
clock tick, since that's when other adjustments including possibly
switching the clock source will be applied.

-- 
brandon s allbery kf8nh                               sine nomine associates
allbery.b@gmail.com                                  ballbery@sinenomine.net
unix, openafs, kerberos, infrastructure, xmonad        http://sinenomine.net