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;;; cider-profile.el --- CIDER support for profiling -*- lexical-binding: t; -*-
;; Copyright © 2014-2019 Edwin Watkeys and CIDER contributors
;; Author: Edwin Watkeys <edw@poseur.com>
;; Juan E. Maya <jmayaalv@gmail.com>
;; This program 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.
;; 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 General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; Provides coarse-grained interactive profiling support.
;; Based on earlier work by Edwin Watkeys (https://github.com/thunknyc/nrepl-profile).
;;; Code:
(require 'cider-client)
(require 'cider-popup)
(require 'cider-eval)
(defconst cider-profile-buffer "*cider-profile*")
(defvar cider-profile-map
(let ((map (define-prefix-command 'cider-profile-map)))
(define-key map (kbd "t") #'cider-profile-toggle)
(define-key map (kbd "c") #'cider-profile-clear)
(define-key map (kbd "S") #'cider-profile-summary)
(define-key map (kbd "s") #'cider-profile-var-summary)
(define-key map (kbd "n") #'cider-profile-ns-toggle)
(define-key map (kbd "v") #'cider-profile-var-profiled-p)
(define-key map (kbd "+") #'cider-profile-samples)
map)
"CIDER profiler keymap.")
(defconst cider-profile-menu
'("Profile"
["Toggle var profiling" cider-profile-toggle]
["Toggle namespace profiling" cider-profile-ns-toggle]
"--"
["Display var profiling status" cider-profile-var-profiled-p]
["Display max sample count" cider-profile-samples]
["Display summary" cider-profile-summary]
["Clear data" cider-profile-clear])
"CIDER profiling submenu.")
(defun cider-profile--make-response-handler (handler &optional buffer)
"Make a response handler using value handler HANDLER for connection BUFFER.
Optional argument BUFFER defaults to current buffer."
(nrepl-make-response-handler
(or buffer (current-buffer)) handler nil nil nil))
;;;###autoload
(defun cider-profile-samples (&optional query)
"Displays current max-sample-count.
If optional QUERY is specified, set max-sample-count and display new value."
(interactive "P")
(cider-ensure-op-supported "set-max-samples")
(cider-ensure-op-supported "get-max-samples")
(if (not (null query))
(cider-nrepl-send-request
(let ((max-samples (if (numberp query) query '())))
(message "query: %s" max-samples)
`("op" "set-max-samples" "max-samples" ,max-samples))
(cider-profile--make-response-handler
(lambda (_buffer value)
(let ((value (if (zerop (length value)) "unlimited" value)))
(message "max-sample-count is now %s" value)))))
(cider-nrepl-send-request
'("op" "get-max-samples")
(cider-profile--make-response-handler
(lambda (_buffer value)
(let ((value (if (zerop (length value)) "unlimited" value)))
(message "max-sample-count is now %s" value))))))
query)
;;;###autoload
(defun cider-profile-var-profiled-p (query)
"Displays the profiling status of var under point.
Prompts for var if none under point or QUERY is present."
(interactive "P")
(cider-ensure-op-supported "is-var-profiled")
(cider-read-symbol-name
"Report profiling status for var: "
(lambda (sym)
(let ((ns (cider-current-ns)))
(cider-nrepl-send-request
`("op" "is-var-profiled"
"ns" ,ns
"sym" ,sym)
(cider-profile--make-response-handler
(lambda (_buffer value)
(pcase value
("profiled" (message "Profiling is currently enabled for %s/%s" ns sym))
("unprofiled" (message "Profiling is currently disabled for %s/%s" ns sym))
("unbound" (message "%s/%s is unbound" ns sym)))))))))
query)
;;;###autoload
(defun cider-profile-ns-toggle (&optional query)
"Toggle profiling for the ns associated with optional QUERY.
If optional argument QUERY is non-nil, prompt for ns. Otherwise use
current ns."
(interactive "P")
(cider-ensure-op-supported "toggle-profile-ns")
(let ((ns (if query
(completing-read "Toggle profiling for ns: "
(cider-sync-request:ns-list))
(cider-current-ns))))
(cider-nrepl-send-request
`("op" "toggle-profile-ns"
"ns" ,ns)
(cider-profile--make-response-handler
(lambda (_buffer value)
(pcase value
("profiled" (message "Profiling enabled for %s" ns))
("unprofiled" (message "Profiling disabled for %s" ns)))))))
query)
;;;###autoload
(defun cider-profile-toggle (query)
"Toggle profiling for the given QUERY.
Defaults to the symbol at point.
With prefix arg or no symbol at point, prompts for a var."
(interactive "P")
(cider-ensure-op-supported "toggle-profile")
(cider-read-symbol-name
"Toggle profiling for var: "
(lambda (sym)
(let ((ns (cider-current-ns)))
(cider-nrepl-send-request
`("op" "toggle-profile"
"ns" ,ns
"sym" ,sym)
(cider-profile--make-response-handler
(lambda (_buffer value)
(pcase value
("profiled" (message "Profiling enabled for %s/%s" ns sym))
("unprofiled" (message "Profiling disabled for %s/%s" ns sym))
("unbound" (message "%s/%s is unbound" ns sym)))))))))
query)
(defun cider-profile-display-stats (stats-response)
"Displays the STATS-RESPONSE on `cider-profile-buffer`."
(let ((table (nrepl-dict-get stats-response "err")))
(if cider-profile-buffer
(let ((buffer (cider-make-popup-buffer cider-profile-buffer)))
(with-current-buffer buffer
(let ((inhibit-read-only t)) (insert table)))
(display-buffer buffer)
(let ((window (get-buffer-window buffer)))
(set-window-point window 0)
(select-window window)
(fit-window-to-buffer window)))
(cider-emit-interactive-eval-err-output table))))
;;;###autoload
(defun cider-profile-summary ()
"Display a summary of currently collected profile data."
(interactive)
(cider-ensure-op-supported "profile-summary")
(cider-profile-display-stats
(cider-nrepl-send-sync-request '("op" "profile-summary"))))
;;;###autoload
(defun cider-profile-var-summary (query)
"Display profile data for var under point QUERY.
Defaults to the symbol at point. With prefix arg or no symbol at point,
prompts for a var."
(interactive "P")
(cider-ensure-op-supported "profile-var-summary")
(cider-read-symbol-name
"Profile-summary for var: "
(lambda (sym)
(cider-profile-display-stats
(cider-nrepl-send-sync-request
`("op" "profile-var-summary"
"ns" ,(cider-current-ns)
"sym" ,sym)))))
query)
;;;###autoload
(defun cider-profile-clear ()
"Clear any collected profile data."
(interactive)
(cider-ensure-op-supported "clear-profile")
(cider-nrepl-send-request
'("op" "clear-profile")
(cider-profile--make-response-handler
(lambda (_buffer value)
(when (equal value "cleared")
(message "Cleared profile data"))))))
(provide 'cider-profile)
;;; cider-profile.el ends here
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