From: Dan Nelson <dnelson@allantgroup.com>
To: "Matthias B." <msbREMOVE-THIS@winterdrache.de>
Cc: zsh-workers@sunsite.dk
Subject: Re: bug with for and time
Date: Tue, 5 Oct 2004 13:18:20 -0500 [thread overview]
Message-ID: <20041005181820.GC30419@dan.emsphone.com> (raw)
In-Reply-To: <20041005113848.6f3715bd@buddha.localdomain.de>
In the last episode (Oct 05), Matthias B. said:
> On Mon, 04 Oct 2004 17:10:47 +0100 Peter Stephenson <pws@csr.com> wrote:
> > Nathan Sidwell wrote:
> > > Zsh 4.0.4 appears to lose the time command in the following,
> > >
> > > nathan@garibaldi:363>for i in 1 2 ; time echo
> > >
> > > but, place the command in a subshell, and it works.
> >
> > Yes, that's always been an annoying limitation: "time" works by
> > gettings system information about subprocesses, and there isn't one
> > in this case.
>
> Then how does bash do it? bash can time builtins just fine.
It probably calls getrusage(RUSAGE_SELF) before and after whatever
you're timing, then prints the deltas.
--
Dan Nelson
dnelson@allantgroup.com
next prev parent reply other threads:[~2004-10-05 18:19 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-04 15:31 Nathan Sidwell
2004-10-04 16:10 ` Peter Stephenson
2004-10-05 9:38 ` Matthias B.
2004-10-05 18:18 ` Dan Nelson [this message]
2004-10-06 11:48 ` Matthias B.
2004-10-06 12:52 ` Nikolai Weibull
2004-10-06 17:06 ` Peter Stephenson
2004-10-06 17:53 ` Dan Nelson
2004-10-07 9:37 ` Peter Stephenson
2004-10-07 15:25 ` Dan Nelson
2004-10-08 13:14 ` Peter Stephenson
2004-10-08 14:18 ` Peter Stephenson
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