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| | ;; -*- lexical-binding:t -*-
;; Copyright (C) 2015-2024 Free Software Foundation, Inc.
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs 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 General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Code:
(require 'cl-lib)
(require 'subr-x)
(require 'seq)
(require 'hi-lock)
\f
;; +===================================================================================+
;; | Framework
;; +===================================================================================+
(defmacro perf-define-constant-test (name &optional doc &rest body)
(declare (indent 1) (debug (symbol &optional string &rest form)))
`(progn
(put ',name 'perf-constant-test t)
(defun ,name nil ,doc ,@body)))
(defmacro perf-define-variable-test (name args &optional doc &rest body)
(declare (indent 2) (debug defun))
(unless (and (consp args)
(= (length args) 1))
(error "Function %s should accept exactly one argument." name))
`(progn
(put ',name 'perf-variable-test t)
(defun ,name ,args ,doc ,@body)))
(defmacro perf-define-test-suite (name &rest tests)
(declare (indent 1))
`(put ',name 'perf-test-suite
,(cons 'list tests)))
(defun perf-constant-test-p (test)
(get test 'perf-constant-test))
(defun perf-variable-test-p (test)
(get test 'perf-variable-test))
(defun perf-test-suite-p (suite)
(not (null (perf-test-suite-elements suite))))
(defun perf-test-suite-elements (suite)
(get suite 'perf-test-suite))
(defun perf-expand-suites (test-and-suites)
(apply #' append (mapcar (lambda (elt)
(if (perf-test-suite-p elt)
(perf-test-suite-elements elt)
(list elt)))
test-and-suites)))
(defun perf-test-p (symbol)
(or (perf-variable-test-p symbol)
(perf-constant-test-p symbol)))
(defun perf-all-tests ()
(let (result)
(mapatoms (lambda (symbol)
(when (and (fboundp symbol)
(perf-test-p symbol))
(push symbol result))))
(sort result #'string-lessp)))
(defvar perf-default-test-argument 4096)
(defun perf-run-1 (&optional k n &rest tests)
"Run TESTS K times using N as argument for non-constant ones.
Return test-total elapsed time."
(random "")
(when (and n (not (numberp n)))
(push k tests)
(push n tests)
(setq n nil k nil))
(when (and k (not (numberp k)))
(push k tests)
(setq k nil))
(let* ((k (or k 1))
(n (or n perf-default-test-argument))
(tests (perf-expand-suites (or tests
(perf-all-tests))))
(variable-tests (seq-filter #'perf-variable-test-p tests))
(constant-tests (seq-filter #'perf-constant-test-p tests))
(max-test-string-width (perf-max-symbol-length tests)))
(unless (seq-every-p #'perf-test-p tests)
(error "Some of these are not tests: %s" tests))
(cl-labels ((format-result (result)
(cond
((numberp result) (format "%.2f" result))
((stringp result) result)
((null result) "N/A")))
(format-test (fn)
(concat (symbol-name fn)
(make-string
(+ (- max-test-string-width
(length (symbol-name fn)))
1)
?\s)))
(format-summary (results _total)
(let ((min (apply #'min results))
(max (apply #'max results))
(avg (/ (apply #'+ results) (float (length results)))))
(format "n=%d min=%.2f avg=%.2f max=%.2f" (length results) min avg max)))
(run-test (fn)
(let ((total 0) results)
(dotimes (_ (max 0 k))
(garbage-collect)
(princ (concat " " (format-test fn)))
(let ((result (condition-case-unless-debug err
(cond
((perf-variable-test-p fn)
(random "") (car (funcall fn n)))
((perf-constant-test-p fn)
(random "") (car (funcall fn)))
(t "skip"))
(error (error-message-string err)))))
(when (numberp result)
(cl-incf total result)
(push result results))
(princ (format-result result))
(terpri)))
(when (> (length results) 1)
(princ (concat "#" (format-test fn)
(format-summary results total)))
(terpri)))))
(when variable-tests
(terpri)
(dolist (fn variable-tests)
(run-test fn)
(terpri)))
(when constant-tests
(dolist (fn constant-tests)
(run-test fn)
(terpri))))))
(defun perf-run (&optional k n &rest tests)
(interactive
(let* ((n (if current-prefix-arg
(prefix-numeric-value current-prefix-arg)
perf-default-test-argument))
(tests (mapcar #'intern
(completing-read-multiple
(format "Run tests (n=%d): " n)
(perf-all-tests) nil t nil 'perf-test-history))))
(cons 1 (cons n tests))))
(with-current-buffer (get-buffer-create "*perf-results*")
(let ((inhibit-read-only t)
(standard-output (current-buffer)))
(erase-buffer)
(apply #'perf-run-1 k n tests)
(display-buffer (current-buffer)))))
(defun perf-batch-parse-command-line (args)
(let ((k 1)
(n perf-default-test-argument)
tests)
(while args
(cond ((string-match-p "\\`-[cn]\\'" (car args))
(unless (and (cdr args)
(string-match-p "\\`[0-9]+\\'" (cadr args)))
(error "%s expects a natnum argument" (car args)))
(if (equal (car args) "-c")
(setq k (string-to-number (cadr args)))
(setq n (string-to-number (cadr args))))
(setq args (cddr args)))
(t (push (intern (pop args)) tests))))
(list k n tests)))
(defun perf-run-batch ()
"Runs tests from `command-line-args-left' and kill emacs."
(let ((standard-output #'external-debugging-output))
(condition-case err
(cl-destructuring-bind (k n tests)
(perf-batch-parse-command-line command-line-args-left)
(apply #'perf-run-1 k n tests)
(save-buffers-kill-emacs))
(error
(princ (error-message-string err))
(save-buffers-kill-emacs)))))
(defconst perf-number-of-columns 70)
(defun perf-insert-lines (n)
"Insert N lines into the current buffer."
(dotimes (i n)
(insert (make-string perf-number-of-columns
(if (= (% i 2) 0)
?.
?O))
?\n)))
(defun perf-random-string (n)
"Create a string of N random characters."
(cl-loop with v = (make-vector n 0)
for i upfrom 0 below n
;; This generates printable ASCII characters.
for c = (+ ?! (random (- ?~ ?!)))
do (aset v i c)
finally return (concat v)))
(defun perf-insert-random (n)
"Insert N random characters into the current buffer."
(insert (perf-random-string n)))
(defun perf-switch-to-buffer-scroll-random (n &optional buffer)
(interactive)
(set-window-buffer nil (or buffer (current-buffer)))
(goto-char (point-min))
(redisplay t)
(dotimes (_ n)
(goto-char (random (point-max)))
(recenter)
(redisplay t)))
(defun perf-insert-overlays (n &optional create-callback random-p)
(if random-p
(perf-insert-overlays-random n create-callback)
(perf-insert-overlays-sequential n create-callback)))
(defun perf-insert-overlays-sequential (n &optional create-callback)
"Insert an overlay every Nth line."
(declare (indent 1))
(let ((i 0)
(create-callback (or create-callback #'ignore)))
(save-excursion
(goto-char (point-min))
(while (not (eobp))
(when (= 0 (% i n))
(let ((ov (make-overlay (point-at-bol) (point-at-eol))))
(funcall create-callback ov)
(overlay-put ov 'priority (random (buffer-size)))))
(cl-incf i)
(forward-line)))))
(defun perf-insert-overlays-random (n &optional create-callback)
"Insert an overlay every Nth line."
(declare (indent 1))
(let ((create-callback (or create-callback #'ignore)))
(save-excursion
(while (>= (cl-decf n) 0)
(let* ((beg (1+ (random (point-max))))
(ov (make-overlay
beg (+ beg (random perf-number-of-columns)))))
(funcall create-callback ov)
(overlay-put ov 'priority (random (buffer-size))))))))
(defun perf-insert-overlays-hierarchical (n &optional create-callback)
(let ((create-callback (or create-callback #'ignore)))
(save-excursion
(goto-char (point-min))
(let ((spacing (floor (/ (/ (count-lines (point-min) (point-max))
(float 3))
n))))
(when (< spacing 1)
(error "Hierarchical overlay overflow !!"))
(dotimes (i n)
(funcall create-callback
(make-overlay (point)
(save-excursion
(goto-char (point-max))
(forward-line (- (* spacing i)))
(point))))
(when (eobp)
(error "End of buffer in hierarchical overlays"))
(forward-line spacing))))))
(defun perf-overlay-ascii-chart (&optional buffer width)
(interactive)
(save-current-buffer
(when buffer (set-buffer buffer))
(unless width (setq width 100))
(let* ((ovl (sort (overlays-in (point-min) (point-max))
(lambda (ov1 ov2)
(or (<= (overlay-start ov1)
(overlay-start ov2))
(and
(= (overlay-start ov1)
(overlay-start ov2))
(< (overlay-end ov1)
(overlay-end ov2)))))))
(ov-width (apply #'max (mapcar (lambda (ov)
(- (overlay-end ov)
(overlay-start ov)))
ovl)))
(ov-min (apply #'min (mapcar #'overlay-start ovl)))
(ov-max (apply #'max (mapcar #'overlay-end ovl)))
(scale (/ (float width) (+ ov-min ov-width))))
(with-current-buffer (get-buffer-create "*overlay-ascii-chart*")
(let ((inhibit-read-only t))
(erase-buffer)
(buffer-disable-undo)
(insert (format "%06d%s%06d\n" ov-min (make-string (- width 12) ?\s) ov-max))
(dolist (ov ovl)
(let ((length (round (* scale (- (overlay-end ov)
(overlay-start ov))))))
(insert (make-string (round (* scale (overlay-start ov))) ?\s))
(cl-case length
(0 (insert "O"))
(1 (insert "|"))
(t (insert (format "|%s|" (make-string (- length 2) ?-)))))
(insert "\n")))
(goto-char (point-min)))
(read-only-mode 1)
(pop-to-buffer (current-buffer))))))
(defconst perf-overlay-faces (mapcar #'intern (seq-take hi-lock-face-defaults 3)))
(defun perf-overlay-face-callback (ov)
(overlay-put ov 'face (nth (random (length perf-overlay-faces))
perf-overlay-faces)))
(defun perf-overlay-invisible-callback (ov)
(overlay-put ov 'invisble (= 1 (random 2))))
(defun perf-overlay-display-callback (ov)
(overlay-put ov 'display (make-string perf-number-of-columns ?*)))
(defmacro perf-define-display-test (overlay-type property-type scroll-type)
(let ((name (intern (format "perf-display-%s/%s/%s"
overlay-type property-type scroll-type)))
(arg (make-symbol "n")))
`(perf-define-variable-test ,name (,arg)
(with-temp-buffer
(perf-insert-lines ,arg)
(overlay-recenter (point-max))
,@(perf-define-display-test-1 arg overlay-type property-type scroll-type)))))
(defun perf-define-display-test-1 (arg overlay-type property-type scroll-type)
(list (append (cl-case overlay-type
(sequential
(list 'perf-insert-overlays-sequential 2))
(hierarchical
`(perf-insert-overlays-hierarchical (/ ,arg 10)))
(random
`(perf-insert-overlays-random (/ ,arg 2)))
(t (error "Invalid insert type: %s" overlay-type)))
(list
(cl-case property-type
(display '#'perf-overlay-display-callback)
(face '#'perf-overlay-face-callback)
(invisible '#'perf-overlay-invisible-callback)
(t (error "Invalid overlay type: %s" overlay-type)))))
(list 'benchmark-run 1
(cl-case scroll-type
(scroll '(perf-switch-to-buffer-scroll-up-and-down))
(random `(perf-switch-to-buffer-scroll-random (/ ,arg 50)))
(t (error "Invalid scroll type: %s" overlay-type))))))
(defun perf-max-symbol-length (symbols)
"Return the longest symbol in SYMBOLS, or -1 if symbols is nil."
(if (null symbols)
-1
(apply #'max (mapcar
(lambda (elt)
(length (symbol-name elt)))
symbols))))
(defun perf-insert-text (n)
"Insert N character into the current buffer."
(let ((ncols 68)
(char ?.))
(dotimes (_ (/ n ncols))
(insert (make-string (1- ncols) char) ?\n))
(when (> (% n ncols) 0)
(insert (make-string (1- (% n ncols)) char) ?\n))))
(defconst perf-insert-overlays-default-length 24)
(defun perf-insert-overlays-scattered (n &optional length)
"Insert N overlays of max length 24 randomly."
(dotimes (_ n)
(let ((begin (random (1+ (point-max)))))
(make-overlay
begin (+ begin (random (1+ (or length perf-insert-overlays-default-length 0))))))))
(defvar perf-marker-gc-protection nil)
(defun perf-insert-marker-scattered (n)
"Insert N marker randomly."
(setq perf-marker-gc-protection nil)
(dotimes (_ n)
(push (copy-marker (random (1+ (point-max))))
perf-marker-gc-protection)))
(defun perf-switch-to-buffer-scroll-up-and-down (&optional buffer)
(interactive)
(set-window-buffer nil (or buffer (current-buffer)))
(goto-char (point-min))
(redisplay t)
(while (condition-case nil
(progn (scroll-up) t)
(end-of-buffer nil))
(redisplay t))
(while (condition-case nil
(progn (scroll-down) t)
(beginning-of-buffer nil))
(redisplay t)))
(defmacro perf-define-marker-test (type where)
(let ((name (intern (format "perf-%s-%s-marker" type where))))
`(perf-define-variable-test ,name (n)
(with-temp-buffer
(perf-insert-text n)
(perf-insert-marker-scattered n)
(goto-char ,(cl-case where
(after (list 'point-max))
(t (list 'point-min))))
(benchmark-run 1
(dotimes (_ (/ n 2))
,@(when (eq where 'scatter)
(list '(goto-char (max 1 (random (point-max))))))
,(cl-case type
(insert (list 'insert ?X))
(delete (list 'delete-char (if (eq where 'after) -1 1))))))))))
(defun perf-emacs-lisp-setup ()
(add-to-list 'imenu-generic-expression
'(nil "^\\s-*(perf-define\\(?:\\w\\|\\s_\\)*\\s-*\\(\\(?:\\w\\|\\s_\\)+\\)" 1)))
(add-hook 'emacs-lisp-mode 'perf-emacs-lisp-setup)
|