| ;;;; Copyright (C) 2001, 2004, 2006, 2018 Free Software Foundation, Inc. | |
| ;;;; | |
| ;;;; This library is free software; you can redistribute it and/or | |
| ;;;; modify it under the terms of the GNU Lesser General Public | |
| ;;;; License as published by the Free Software Foundation; either | |
| ;;;; version 3 of the License, or (at your option) any later version. | |
| ;;;; | |
| ;;;; This library 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 | |
| ;;;; Lesser General Public License for more details. | |
| ;;;; | |
| ;;;; You should have received a copy of the GNU Lesser General Public | |
| ;;;; License along with this library; if not, write to the Free Software | |
| ;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| ;;;; | |
| ;;; Commentary: | |
| ;; This module exports a single macro: `time'. | |
| ;; Usage: (time exp) | |
| ;; | |
| ;; Example: | |
| ;; guile> (time (sleep 3)) | |
| ;; clock utime stime cutime cstime gctime | |
| ;; 3.01 0.00 0.00 0.00 0.00 0.00 | |
| ;; 0 | |
| ;;; Code: | |
| (define-module (ice-9 time) | |
| #:use-module (ice-9 format) | |
| #:export (time)) | |
| (define (time-proc proc) | |
| (let* ((gc-start (gc-run-time)) | |
| (tms-start (times)) | |
| (results (call-with-values proc list)) | |
| (tms-end (times)) | |
| (gc-end (gc-run-time))) | |
| ;; FIXME: We would probably like format ~f to accept rationals, but | |
| ;; currently it doesn't so we force to a flonum with exact->inexact. | |
| (define (get proc start end) | |
| (exact->inexact (/ (- (proc end) (proc start)) internal-time-units-per-second))) | |
| (display "clock utime stime cutime cstime gctime\n") | |
| (format #t "~5,2F ~5,2F ~5,2F ~6,2F ~6,2F ~6,2F\n" | |
| (get tms:clock tms-start tms-end) | |
| (get tms:utime tms-start tms-end) | |
| (get tms:stime tms-start tms-end) | |
| (get tms:cutime tms-start tms-end) | |
| (get tms:cstime tms-start tms-end) | |
| (get identity gc-start gc-end)) | |
| (apply values results))) | |
| (define-syntax-rule (time exp) | |
| (time-proc (lambda () exp))) | |
| ;;; time.scm ends here | |