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|
;;; racket-profile.el -*- lexical-binding: t -*-
;; Copyright (c) 2013-2016 by Greg Hendershott.
;; Portions Copyright (C) 1985-1986, 1999-2013 Free Software Foundation, Inc.
;; Author: Greg Hendershott
;; URL: https://github.com/greghendershott/racket-mode
;; License:
;; This 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 2, or (at your option)
;; any later version. This 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. See
;; http://www.gnu.org/licenses/ for details.
(require 'cl-lib)
(require 'racket-edit)
(require 'racket-repl)
(defvar racket--profile-results nil)
(defvar racket--profile-sort-col 1) ;0=Calls, 1=Msec
(defvar racket--profile-show-zero nil)
(defvar racket--profile-overlay-this nil)
(defvar racket--profile-overlay-that nil)
(defun racket-profile ()
"Runs with profiling instrumentation and shows results.
Results are presented in a `racket-profile-mode' buffer, which
also lets you quickly view the source code.
You may evaluate expressions in the REPL. They are also profiled.
Use `racket--profile-refresh' to see the updated results. (In
other words a possible workflow is: `racket-profile' a .rkt file,
call one its functions in the REPL, and refresh the profile
results.)
Caveat: Only source files are instrumented. You may need to
delete compiled/*.zo files."
(interactive)
(unless (eq major-mode 'racket-mode)
(user-error "Works only in a racket-mode buffer"))
(message "Running with profiling instrumentation...")
(racket--repl-run
nil
'profile
(lambda (_what)
(message "Getting profile results...")
(racket--cmd/async
`(get-profile)
(lambda (results)
(message "")
(setq racket--profile-results results)
(setq racket--profile-sort-col 1)
(with-current-buffer (get-buffer-create "*Racket Profile*")
(racket-profile-mode)
(racket--profile-draw)
(pop-to-buffer (current-buffer))))))))
(defun racket--profile-refresh ()
(interactive)
(setq racket--profile-results (racket--cmd/await `(get-profile)))
(racket--profile-draw))
(defun racket--profile-draw ()
(read-only-mode -1)
(erase-buffer)
(setq truncate-lines t) ;let run off right edge
;; TODO: Would be nice to set the Calls and Msec column widths based
;; on max values.
(setq header-line-format
(format " %8s %6s %-20.20s %s"
(if (= 0 racket--profile-sort-col) "CALLS" "Calls")
(if (= 1 racket--profile-sort-col) "MSEC" "Msec")
"Name (inferred)"
"File"))
(insert
(mapconcat (lambda (xs)
(cl-destructuring-bind (calls msec name file beg end) xs
(propertize (format "%8d %6d %-20.20s %s"
calls msec (or name "") (or file ""))
'racket-profile-location
(and file beg end
(list file beg end)))))
(sort (cl-remove-if-not (lambda (x)
(or racket--profile-show-zero
(/= 0 (nth 0 x))
(/= 0 (nth 1 x))))
(cl-copy-list racket--profile-results))
(lambda (a b) (> (nth racket--profile-sort-col a)
(nth racket--profile-sort-col b))))
"\n"))
(read-only-mode 1)
(goto-char (point-min)))
(defun racket--profile-sort ()
"Toggle sort between Calls and Msec."
(interactive)
(setq racket--profile-sort-col (if (= racket--profile-sort-col 0) 1 0))
(racket--profile-draw))
(defun racket--profile-show-zero ()
"Toggle between showing results with zero Calls or Msec."
(interactive)
(setq racket--profile-show-zero (not racket--profile-show-zero))
(racket--profile-draw))
(defun racket--profile-visit ()
(interactive)
(let ((win (selected-window)))
(pcase (get-text-property (point) 'racket-profile-location)
(`(,file ,beg ,end)
(setq racket--profile-overlay-this
(make-overlay (save-excursion (beginning-of-line) (point))
(save-excursion (end-of-line) (point))
(current-buffer)))
(overlay-put racket--profile-overlay-this 'face 'next-error)
(find-file-other-window file)
(setq racket--profile-overlay-that (make-overlay beg end (current-buffer)))
(overlay-put racket--profile-overlay-that 'face 'next-error)
(goto-char beg)
(add-hook 'pre-command-hook #'racket--profile-remove-overlay)
(select-window win)))))
(defun racket--profile-remove-overlay ()
(delete-overlay racket--profile-overlay-this)
(delete-overlay racket--profile-overlay-that)
(remove-hook 'pre-command-hook #'racket--profile-remove-overlay))
(defun racket--profile-next ()
(interactive)
(forward-line 1)
(racket--profile-visit))
(defun racket--profile-prev ()
(interactive)
(forward-line -1)
(racket--profile-visit))
(defun racket--profile-quit ()
(interactive)
(setq racket--profile-results nil)
(quit-window))
(defvar racket-profile-mode-map
(let ((m (make-sparse-keymap)))
(set-keymap-parent m nil)
(mapc (lambda (x)
(define-key m (kbd (car x)) (cadr x)))
'(("q" racket--profile-quit)
("g" racket--profile-refresh)
("n" racket--profile-next)
("p" racket--profile-prev)
("z" racket--profile-show-zero)
("RET" racket--profile-visit)
("," racket--profile-sort)))
m)
"Keymap for Racket Profile mode.")
(define-derived-mode racket-profile-mode special-mode
"RacketProfile"
"Major mode for results of `racket-profile'.
```
\\{racket-profile-mode-map}
```
"
(setq show-trailing-whitespace nil))
(provide 'racket-profile)
;; racket-profile.el ends here
|
