benchmark-suite/benchmarks/uniform-vector-read.bm

   1 ;;; uniform-vector-read.bm --- Exercise binary I/O primitives.  -*- Scheme -*-
   2 ;;;
   3 ;;; Copyright (C) 2008 Free Software Foundation, Inc.
   4 ;;;
   5 ;;; This program is free software; you can redistribute it and/or
   6 ;;; modify it under the terms of the GNU Lesser General Public License
   7 ;;; as published by the Free Software Foundation; either version 3, or
   8 ;;; (at your option) any later version.
   9 ;;;
  10 ;;; This program is distributed in the hope that it will be useful,
  11 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 ;;; GNU Lesser General Public License for more details.
  14 ;;;
  15 ;;; You should have received a copy of the GNU Lesser General Public
  16 ;;; License along with this software; see the file COPYING.LESSER.  If
  17 ;;; not, write to the Free Software Foundation, Inc., 51 Franklin
  18 ;;; Street, Fifth Floor, Boston, MA 02110-1301 USA
  19
  20 (define-module (benchmarks uniform-vector-read)
  21   :use-module (benchmark-suite lib)
  22   :use-module (srfi srfi-4))
  23
  24 (define file-name
  25   (tmpnam))
  26
  27 (define %buffer-size
  28   7777)
  29
  30 (define buf
  31   (make-u8vector %buffer-size))
  32
  33 (define str
  34   (make-string %buffer-size))
  35
  36 \f
  37 (with-benchmark-prefix "uniform-vector-read!"
  38
  39   (benchmark "uniform-vector-write" 4000
  40     (let ((output (open-output-file file-name)))
  41       (uniform-vector-write buf output)
  42       (close output)))
  43
  44   (benchmark "uniform-vector-read!" 20000
  45     (let ((input (open-input-file file-name)))
  46       (setvbuf input _IONBF)
  47       (uniform-vector-read! buf input)
  48       (close input)))
  49
  50   (benchmark "string port" 5000
  51     (let ((input (open-input-string str)))
  52       (uniform-vector-read! buf input)
  53       (close input))))