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

;;; uniform-vector-read.bm --- Exercise binary I/O primitives.  -*- Scheme -*-
;;;
;;; Copyright (C) 2008 Free Software Foundation, Inc.
;;;
;;; This program 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, 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 Lesser General Public License for more details.
;;;
;;; You should have received a copy of the GNU Lesser General Public
;;; License along with this software; see the file COPYING.LESSER.  If
;;; not, write to the Free Software Foundation, Inc., 51 Franklin
;;; Street, Fifth Floor, Boston, MA 02110-1301 USA

(define-module (benchmarks uniform-vector-read)
  :use-module (benchmark-suite lib)
  :use-module (srfi srfi-4))

(define file-name
  (tmpnam))

(define %buffer-size
  7777)

(define buf
  (make-u8vector %buffer-size))

(define str
  (make-string %buffer-size))


(with-benchmark-prefix "uniform-vector-read!"

  (benchmark "uniform-vector-write" 4000
    (let ((output (open-output-file file-name)))
      (uniform-vector-write buf output)
      (close output)))

  (benchmark "uniform-vector-read!" 20000
    (let ((input (open-input-file file-name)))
      (setvbuf input _IONBF)
      (uniform-vector-read! buf input)
      (close input)))

  (benchmark "string port" 5000
    (let ((input (open-input-string str)))
      (uniform-vector-read! buf input)
      (close input))))