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;;; ports.bm --- Port I/O. -*- mode: scheme; coding: utf-8; -*-
;;;
;;; Copyright (C) 2010, 2011, 2012 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 ports)
#:use-module (ice-9 rdelim)
#:use-module (benchmark-suite lib))
(define-syntax sequence
(lambda (s)
;; Create a sequence `(begin EXPR ...)' with COUNT occurrences of EXPR.
(syntax-case s ()
((_ expr count)
(number? (syntax->datum #'count))
(cons #'begin
(make-list (syntax->datum #'count) #'expr))))))
(define (large-string s)
(string-concatenate (make-list (* iteration-factor 10000) s)))
(define %latin1-port
(with-fluids ((%default-port-encoding #f))
(open-input-string (large-string "hello, world"))))
(define %utf8/ascii-port
(with-fluids ((%default-port-encoding "UTF-8"))
(open-input-string (large-string "hello, world"))))
(define %utf8/wide-port
(with-fluids ((%default-port-encoding "UTF-8"))
(open-input-string (large-string "안녕하세요"))))
(with-benchmark-prefix "peek-char"
(benchmark "latin-1 port" 700
(sequence (peek-char %latin1-port) 1000))
(benchmark "utf-8 port, ascii character" 700
(sequence (peek-char %utf8/ascii-port) 1000))
(benchmark "utf-8 port, Korean character" 700
(sequence (peek-char %utf8/wide-port) 1000)))
(with-benchmark-prefix "char-ready?"
(benchmark "latin-1 port" 10000
(sequence (char-ready? %latin1-port) 1000))
(benchmark "utf-8 port, ascii character" 10000
(sequence (char-ready? %utf8/ascii-port) 1000))
(benchmark "utf-8 port, Korean character" 10000
(sequence (char-ready? %utf8/wide-port) 1000)))
;; Keep the `read-char' benchmarks last as they consume input from the
;; ports.
(with-benchmark-prefix "read-char"
(benchmark "latin-1 port" 10000
(sequence (read-char %latin1-port) 1000))
(benchmark "utf-8 port, ascii character" 10000
(sequence (read-char %utf8/ascii-port) 1000))
(benchmark "utf-8 port, Korean character" 10000
(sequence (read-char %utf8/wide-port) 1000)))
(with-benchmark-prefix "rdelim"
(let ((str (string-concatenate (make-list 1000 "one line\n"))))
(benchmark "read-line" 1000
(let ((port (with-fluids ((%default-port-encoding "UTF-8"))
(open-input-string str))))
(sequence (read-line port) 1000)))))
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