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From: Nikolaj Schumacher <n_schumacher@web.de>
To: Nordlöw <per.nordlow@gmail.com>
Cc: help-gnu-emacs@gnu.org
Subject: Re: Timing execution of function calls in Emacs lisp
Date: Thu, 05 Jun 2008 20:27:46 +0200	[thread overview]
Message-ID: <m2abhzybx9.fsf@nschum.de> (raw)
In-Reply-To: <50d4f479-3c3e-4049-ba88-c989174118dc@j22g2000hsf.googlegroups.com> ("Nordlöw"'s message of "Thu\, 5 Jun 2008 06\:24\:45 -0700 \(PDT\)")

Nordlöw <per.nordlow@gmail.com> wrote:

> Is there a way to measure the execution time of function calls?
>
> Compare with following Matlab-snippet:
>   tic; do_something(with_some_arg); toc
>
> In emacs lisp perhaps something like:
>   (time FUNCTION ARGS...)

Here's what I use.  It works well enough for my purposes.

(defmacro measure-time (&rest body)
  "Measure the time it takes to evaluate BODY."
  `(let ((time (current-time)))
     ,@body
     (message "%.06f" (float-time (time-since time)))))

It's used like this:

(measure-time
  (dotimes (i 100000)
    (1+ 1)))

regards,
Nikolaj Schumacher




      parent reply	other threads:[~2008-06-05 18:27 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-06-05 13:24 Timing execution of function calls in Emacs lisp Nordlöw
2008-06-05 15:27 ` Lennart Borgman (gmail)
2008-06-05 16:25 ` Evans Winner
2008-06-05 18:09   ` Nordlöw
2008-06-05 18:27 ` Nikolaj Schumacher [this message]

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