ice-9/time.scm

   1 ;;;;    Copyright (C) 2001 Free Software Foundation, Inc.
   2 ;;;;
   3 ;;;; This program is free software; you can redistribute it and/or modify
   4 ;;;; it under the terms of the GNU General Public License as published by
   5 ;;;; the Free Software Foundation; either version 2, or (at your option)
   6 ;;;; any later version.
   7 ;;;;
   8 ;;;; This program is distributed in the hope that it will be useful,
   9 ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 ;;;; GNU General Public License for more details.
  12 ;;;;
  13 ;;;; You should have received a copy of the GNU General Public License
  14 ;;;; along with this software; see the file COPYING.  If not, write to
  15 ;;;; the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  16 ;;;; Boston, MA 02111-1307 USA
  17 ;;;;
  18 \f
  19
  20 (define-module (ice-9 time)
  21   :use-module (ice-9 format)
  22   :export (time))
  23
  24 (define-macro (time form)
  25   (let* ((gc-start (gc-run-time))
  26          (tms-start (times))
  27          (result (eval form (interaction-environment)))
  28          (tms-end (times))
  29          (gc-end (gc-run-time)))
  30     (define (get proc start end)
  31       (/ (- (proc end) (proc start)) internal-time-units-per-second))
  32     (display "clock utime stime cutime cstime gctime\n")
  33     (format #t "~5,2F ~5,2F ~5,2F ~6,2F ~6,2F ~6,2F\n"
  34             (get tms:clock tms-start tms-end)
  35             (get tms:utime tms-start tms-end)
  36             (get tms:stime tms-start tms-end)
  37             (get tms:cutime tms-start tms-end)
  38             (get tms:cstime tms-start tms-end)
  39             (get id gc-start gc-end))
  40     result))