From: Wayne Davison <wayne@opencoder.net>
To: cygwin <cygwin@cygwin.com>
Subject: Re: Bug in TIME function
Date: Fri, 13 Sep 2019 19:59:00 -0000 [thread overview]
Message-ID: <CAHSx_Ssk0i6UDxoNULcG4ugv_mt7hjTP-DAUQnOUgxX3pXit0w@mail.gmail.com> (raw)
In-Reply-To: <016201d56a26$37271f70$a5755e50$@twcny.rr.com>
On Fri, Sep 13, 2019 at 4:27 AM wrote:
> In Linux [times()] returns a time value and return code of 0:
The Linux man page for times() mentions this special behavior, how it
isn't portable, and even advises against using the function:
"On Linux, the buf argument can be specified as NULL, with the result
that times() just returns a function result. However, POSIX does not
specify this behavior, and most other UNIX implementations require a
non-NULL value for buf."
"[...] a portable application would be wise to avoid using this value.
To measure changes in elapsed time, use clock_gettime(2)
instead."
One might argue that it would be nice to emulate the Linux behavior,
but it's not required by POSIX.
..wayne..
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next prev parent reply other threads:[~2019-09-13 19:11 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-12 18:16 tlake
2019-09-12 18:44 ` Kaz Kylheku
2019-09-13 0:50 ` Kaz Kylheku
2019-09-12 23:03 ` Brian Inglis
2019-09-13 11:37 ` tlake
2019-09-13 19:59 ` Wayne Davison [this message]
2019-09-13 23:05 ` Kaz Kylheku
2019-09-18 0:16 ` Brian Inglis
2019-09-16 7:30 ` Achim Gratz
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