sunterlib/s48/profile/profile.scm

90 lines
2.3 KiB
Scheme

;;; This file is part of the Scheme Untergrund Library.
;;;
;;; Copyright (c) 2000 by Matthias Neubauer
;;; Copyright (c) 2004 by Eric Knauel
;;;
;;; For copyright information, see the file COPYING which comes with
;;; the distribution.
;;;
;;;
;;; ,open table formats extended-ports time
(define *profile-table*
(make-symbol-table))
(define (profile-init!)
(set! *profile-table* (make-symbol-table)))
(define (account-time! name run-time)
(cond
((table-ref *profile-table* name)
=> (lambda (count.time)
(table-set! *profile-table* name
(cons (+ 1 (car count.time))
(+ run-time (cdr count.time))))))
(else
(table-set! *profile-table* name (cons 0 run-time)))))
(define (hundredths n)
(let ((n (round (quotient n 10))))
(string-append
(number->string (quotient n 100))
"."
(let ((r (remainder n 100)))
(if (< r 10)
"0"
(number->string r))))))
(define (table->string table)
(let ((port (make-string-output-port)))
(table-walk
(lambda (key count.time)
(format port "~A: ~A ~A~%"
key (car count.time)
(hundredths (cdr count.time))))
table)
(string-output-port-output port)))
(define (display-profile . port)
(let ((port (if (null? port) (current-output-port) port)))
(format port
(string-append
"Profile summary~%"
"---------------~%"
"~A~%~%")
(table->string *profile-table*))))
(define-syntax define-prof
(syntax-rules
()
((_ (?name . ?arg) ?body ...)
(define (?name . ?arg)
(define-prof "body" ?name ?body ...)))
((_ (?name ?args ...) ?body ...)
(define (?name ?args ...)
(define-prof "body" ?name ?body ...)))
((_ "body" ?name ?body ...)
(let ((start-run-time (run-time)))
(call-with-values
(lambda ()
?body ...)
(lambda results
(let* ((stop-run-time (run-time))
(run-time (- stop-run-time start-run-time)))
(account-time! (quote ?name) run-time)
(apply values results))))))))
(define-syntax account-for
(syntax-rules
()
((account-for ?account ?body ...)
(let ((start-run-time (run-time)))
(call-with-values
(lambda ()
?body ...)
(lambda results
(let* ((stop-run-time (run-time))
(run-time (- stop-run-time start-run-time)))
(account-time! (quote ?account) run-time)
(apply values results))))))))