/usr/share/guile/site/debugging/time.scm is in guile-library 0.2.1-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | ;; (debugging time) -- a timing macro
;; Copyright (C) 2004 Andy Wingo <wingo at pobox dot com>
;; This program is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;
;;@c it's really texinfo
;; Defines a macro to time execution of a body of expressions. Each
;; element is timed individually.
;;
;;; Code:
(define-module (debugging time)
#:use-module (scheme documentation)
#:export (time))
(define-macro-with-docs (time expr . others)
"syntax: @code{(time @var{expr1} @var{expr2}...)}
Times the execution of a list of expressions, in milliseconds. The
resolution is limited to guile's @code{internal-time-units-per-second}.
Disregards the expressions' return value(s) (FIXME)."
(let ((x (gensym)))
`(let ((,x (get-internal-run-time)))
,expr
(format #t "~A ms\n" (* 1000 (/ (- (get-internal-run-time) ,x)
internal-time-units-per-second)))
,@(if (null? others) '() `((time ,@others))))))
;;; arch-tag: ff9cb210-9d1b-4ad4-aa5d-27a23edc91f2
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