From: Ulrich Drepper <drepper@redhat.com>
To: Chris Friesen <cfriesen@nortel.com>
Cc: Andreas Schwab <schwab@suse.de>,
David Miller <davem@davemloft.net>,
paulus@samba.org, akpm@linux-foundation.org, lkml@davidb.org,
linux-kernel@vger.kernel.org, mtk-manpages@gmx.net
Subject: Re: compat_sys_times() bogus until jiffies >= 0.
Date: Fri, 09 Nov 2007 10:20:09 -0800 [thread overview]
Message-ID: <4734A4D9.3090907@redhat.com> (raw)
In-Reply-To: <4733206C.8030903@nortel.com>
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Chris Friesen wrote:
>> A possible remedy is to return the ticks since process start time, which
>> delays the wrap around much further. POSIX only demands consistency
>> within the same process.
>
> This would be an interesting solution.
>
> The man page for linux states that the return code is time since system
> boot, so that could realistically be expected to correlate between
> different processes.
The Linux man page is documenting existing functionality on top of what
the standard requires. Programmers should ever only require what the
standard guarantees.
I am perfectly willing to support a solution where the time is measured
from process startup time. The only code using times() I found is
cross-platform and most likely does not depend on the value returned is
usable in isolation (only in a difference).
- --
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖
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next prev parent reply other threads:[~2007-11-09 18:21 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-07 22:47 compat_sys_times() bogus until jiffies >= 0 David Brown
2007-11-07 23:28 ` Andrew Morton
2007-11-08 0:18 ` Andrew Morton
2007-11-08 0:54 ` Andreas Schwab
2007-11-08 1:17 ` Andrew Morton
2007-11-08 1:53 ` Paul Mackerras
2007-11-08 2:09 ` David Miller
2007-11-08 10:20 ` Andreas Schwab
2007-11-08 14:42 ` Chris Friesen
2007-11-09 18:20 ` Ulrich Drepper [this message]
2007-12-20 11:36 ` Michael Kerrisk
2007-12-20 11:51 ` David Miller
2007-12-22 0:42 ` Andi Kleen
2007-12-22 1:41 ` David Miller
2007-12-22 1:45 ` David Miller
2007-12-22 1:53 ` Andi Kleen
2007-12-22 4:36 ` David Miller
2007-12-22 12:47 ` Andi Kleen
2007-12-22 1:49 ` Andi Kleen
2007-11-08 19:25 ` Denys Vlasenko
2007-11-08 3:07 ` Andrew Morton
2007-11-08 3:13 ` David Miller
2007-11-08 5:15 ` Paul Mackerras
2007-11-08 6:24 ` David Miller
2007-11-08 4:59 ` Paul Mackerras
2007-11-08 5:20 ` Andrew Morton
2007-11-08 5:36 ` Paul Mackerras
2007-11-08 6:12 ` Andrew Morton
2007-11-08 6:25 ` David Miller
2007-11-08 7:09 ` Andrew Morton
2007-11-08 7:14 ` David Miller
2007-11-08 8:53 ` Paul Mackerras
2007-11-08 6:22 ` David Miller
2007-11-08 19:27 ` Denys Vlasenko
2007-11-08 0:50 ` David Miller
2007-11-08 1:13 ` Andrew Morton
2007-11-08 6:00 ` David Brown
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