From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@9fans.net
Subject: Re: [9fans] mk time-check/slice issue
Date: Thu, 19 Dec 2013 00:40:52 -0500 [thread overview]
Message-ID: <34270f8ddb3fc06e71d4db496a891dd4@brasstown.quanstro.net> (raw)
In-Reply-To: <CABwHSOuTCu8HyLHis3ifWgF8harJ8rM2+8=Okr8cumk4BHS6CQ@mail.gmail.com>
> So, I think you are saying, that for pieces in a mkfile that take less than
> 1s to build it is possible for them to be build again, unnecessarily, when
> mk is run again. This is normal and just the way it is. Is that correct?
to be more explicit. if a is built from b and mtime(a) <= mtime(b), then
mk could fail to rebuild a when it needs to. for correctness, mk must use <=
not <.
in some cases, it is possible that this will never converge and adding a
sleep 1 to the rule helps things converge. certainly if the point is to save
time, then one need not bother. on the other hand, if the point is to
make mk precise, that goal can be accomplished with a little effort.
- erik
next prev parent reply other threads:[~2013-12-19 5:40 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-18 22:01 Blake McBride
2013-12-18 22:08 ` Matthew Veety
2013-12-18 22:42 ` Blake McBride
2013-12-18 22:16 ` erik quanstrom
2013-12-18 22:46 ` Blake McBride
2013-12-19 5:40 ` erik quanstrom [this message]
2013-12-19 6:07 ` Bakul Shah
2013-12-19 10:59 ` Charles Forsyth
2013-12-19 14:21 ` Oleksandr Iakovliev
2013-12-19 14:58 ` erik quanstrom
2013-12-19 14:52 ` Blake McBride
2013-12-19 14:55 ` erik quanstrom
2013-12-19 15:58 ` Blake McBride
2013-12-19 16:30 ` Tristan
2013-12-19 16:37 ` Blake McBride
2013-12-19 16:40 ` Jacob Todd
2013-12-19 17:05 ` Blake McBride
2013-12-19 17:24 ` Tristan
2013-12-19 18:30 ` Blake McBride
2013-12-19 17:59 ` Steffen Daode Nurpmeso
2013-12-19 17:07 ` a
2013-12-19 18:40 ` Blake McBride
2013-12-19 18:58 ` Kurt H Maier
2013-12-19 19:06 ` Matthew Veety
2013-12-19 19:07 ` Kurt H Maier
2013-12-19 19:20 ` Blake McBride
2013-12-19 19:27 ` Kurt H Maier
2013-12-19 19:42 ` Blake McBride
2013-12-19 20:02 ` Kurt H Maier
2013-12-19 20:18 ` erik quanstrom
2013-12-19 20:23 ` Kurt H Maier
2013-12-19 19:35 ` a
2013-12-19 19:09 ` a
2013-12-27 10:16 ` dexen deVries
2013-12-19 19:09 ` erik quanstrom
2013-12-19 19:29 ` Blake McBride
2013-12-19 19:39 ` Gabriel Diaz
2013-12-19 20:15 ` Richard Miller
2013-12-19 20:28 ` Blake McBride
2013-12-19 20:45 ` Richard Miller
2013-12-20 15:23 ` Aram Hăvărneanu
2013-12-19 19:12 ` Skip Tavakkolian
2013-12-19 19:22 ` Blake McBride
2013-12-19 19:43 ` Rudolf Sykora
2013-12-19 19:58 ` Blake McBride
2013-12-19 19:26 ` sl
2013-12-19 10:01 ` Richard Miller
2013-12-19 15:01 ` erik quanstrom
[not found] <CAC0DbM5safEHO_MFpBazvvH6CcGQXGTow-Fe7fkqkP6GrU1Xzw@mail.gmail.com>
[not found] ` <CAC0DbM7S-xZvOSDwB6KoWH2X8ny_57F9mBE7gaB_BuWR5RSJiw@mail.gmail.com>
2013-12-18 23:09 ` Jason Catena
2013-12-19 5:47 ` erik quanstrom
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