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;;; read.bm --- Exercise the reader. -*- Scheme -*-
;;;
;;; Copyright (C) 2008, 2010, 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 read)
:use-module (benchmark-suite lib))
(define %files-to-load
;; Various large Scheme files.
(map %search-load-path
'("ice-9/boot-9.scm" "ice-9/common-list.scm"
"ice-9/format.scm" "ice-9/optargs.scm"
"ice-9/session.scm" "ice-9/getopt-long.scm"
"ice-9/psyntax-pp.scm")))
(define (load-file-with-reader file-name reader buffering)
(with-input-from-file file-name
(lambda ()
(apply setvbuf (current-input-port) buffering)
(let loop ((sexp (reader)))
(if (eof-object? sexp)
#t
(loop (reader)))))))
(define (exercise-read buffering)
(for-each (lambda (file)
(load-file-with-reader file read buffering))
%files-to-load))
(define small "\"hello, world!\"")
(define large (string-append "\"" (make-string 1234 #\A) "\""))
(fluid-set! %default-port-encoding "UTF-8") ; for string ports
(with-benchmark-prefix "read"
(benchmark "'none" 5 ;; this one is very slow
(exercise-read (list 'none)))
(benchmark "'line" 10
(exercise-read (list 'line)))
(benchmark "'block 4096" 10
(exercise-read (list 'block 4096)))
(benchmark "'block 8192" 10
(exercise-read (list 'block 8192)))
(benchmark "'block 16384" 10
(exercise-read (list 'block 16384)))
(benchmark "small strings" 100000
(call-with-input-string small read))
(benchmark "large strings" 100000
(call-with-input-string large read)))
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