From: Eli Zaretskii <eliz@gnu.org>
To: Paul Eggert <eggert@cs.ucla.edu>
Cc: emacs-devel@gnu.org
Subject: Re: [PATCH 1/7] gnulib substrate for ns-resolution time stamps
Date: Fri, 01 Jul 2011 22:52:34 +0300 [thread overview]
Message-ID: <83k4c1rd6l.fsf@gnu.org> (raw)
In-Reply-To: <4E0E16F1.1010301@cs.ucla.edu>
> Date: Fri, 01 Jul 2011 11:50:25 -0700
> From: Paul Eggert <eggert@cs.ucla.edu>
> CC: emacs-devel@gnu.org
>
> > So all that needs to be done on Windows is scale the times in
> > nanosecond units, i.e. multiply the current values by 1000.
>
> Yes, that sounds right. If Windows is currently scaling by 1000
> to get microseconds, it can simply scale by 1000*1000 to get
> nanoseconds. This should work for both file time stamps and
> for the pselect emulation. E.g., Windows can emulate pselect the
> same way it emulates select, except it multiplies by another 1000.
Agree about pselect, but file time stamps _are_ more fine-grained on
Windows. So struct stat needs to be modified and stat-file.h needs to
be used, as I wrote earlier.
> >> The Windows emulation for <time.h> will need to define struct
> >> timespec, if it doesn't already.
> >
> > Which functions require that, and why?
>
> Any function that uses EMACS_TIME, because EMACS_TIME is now struct
> timespec.
OK, then this should be added to nt/inc/sys/time.h.
Thanks for taking your time to explain these issues.
next prev parent reply other threads:[~2011-07-01 19:52 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-01 6:59 nanosecond-resolution time stamps Paul Eggert
2011-07-01 8:14 ` [PATCH 1/7] gnulib substrate for ns-resolution " Paul Eggert
2011-07-01 11:20 ` Eli Zaretskii
2011-07-01 14:13 ` Eli Zaretskii
2011-07-01 16:27 ` Paul Eggert
2011-07-01 17:39 ` Eli Zaretskii
2011-07-01 18:50 ` Paul Eggert
2011-07-01 19:52 ` Eli Zaretskii [this message]
2011-07-01 8:14 ` [PATCH 2/7] etc/NEWS patch " Paul Eggert
2011-07-01 8:15 ` [PATCH 3/7] Doc patches " Paul Eggert
2011-07-01 8:15 ` [PATCH 4/7] configure-time support " Paul Eggert
2011-07-01 8:15 ` [PATCH 5/7] C-level " Paul Eggert
2011-07-01 8:16 ` [PATCH 6/7] lib-src " Paul Eggert
2011-07-01 8:16 ` [PATCH 7/7] Lisp-level " Paul Eggert
2011-07-01 15:55 ` nanosecond-resolution " Stefan Monnier
2011-07-01 17:15 ` Paul Eggert
2011-07-04 15:04 ` Stefan Monnier
2011-07-05 7:13 ` Paul Eggert
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