guile/benchmark-suite/benchmarks/bytevector-io.bm

;;; bytevector-io.bm --- Exercise bytevector I/O primitives.  -*- Scheme -*-
;;;
;;; Copyright (C) 2008, 2017 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 bytevector-io)
  :use-module (benchmark-suite lib)
  :use-module (rnrs io ports)
  :use-module (rnrs bytevectors))

(define file-name
  (tmpnam))

(define %buffer-size
  7777)

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


(with-benchmark-prefix "bytevector i/o"

  (benchmark "put-bytevector" 4000
    (let ((output (open-output-file file-name)))
      (put-bytevector output buf)
      (close output)))

  (benchmark "get-bytevector-n!" 20000
    (let ((input (open-input-file file-name)))
      (setvbuf input 'none)
      (get-bytevector-n! input buf 0 (bytevector-length buf))
      (close input)))

  (benchmark "get-bytevector-n" 20000
    (let ((input (open-input-file file-name)))
      (setvbuf input 'none)
      (get-bytevector-n input (bytevector-length buf))
      (close input))))