416 lines
16 KiB
EmacsLisp
416 lines
16 KiB
EmacsLisp
;;; lisp/lib/debug.el -*- lexical-binding: t; -*-
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;;
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;;; Doom's debug mode
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;;;###autoload
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(defvar doom-debug-variables
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'(;; Doom variables
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(doom-print-level . debug)
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;; Emacs variables
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async-debug
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debug-on-error
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(debugger . doom-debugger)
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garbage-collection-messages
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gcmh-verbose
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init-file-debug
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jka-compr-verbose
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(message-log-max . 16384)
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(native-comp-async-report-warnings-errors . silent)
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(native-comp-warning-on-missing-source . t)
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url-debug
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use-package-verbose
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(warning-suppress-types . nil))
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"A list of variable to toggle on `doom-debug-mode'.
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Each entry can be a variable symbol or a cons cell whose CAR is the variable
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symbol and CDR is the value to set it to when `doom-debug-mode' is activated.")
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(defvar doom-debug--undefined-vars nil)
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(defun doom-debug--watch-vars-h (&rest _)
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(when-let (bound-vars (cl-delete-if-not #'boundp doom-debug--undefined-vars))
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(doom-log "New variables available: %s" bound-vars)
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(let ((message-log-max nil))
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(doom-debug-mode -1)
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(doom-debug-mode +1))))
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;;;###autoload
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(define-minor-mode doom-debug-mode
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"Toggle `debug-on-error' and `init-file-debug' for verbose logging."
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:init-value init-file-debug
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:global t
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(let ((enabled doom-debug-mode))
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(setq doom-debug--undefined-vars nil)
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(dolist (var doom-debug-variables)
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(cond ((listp var)
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(pcase-let ((`(,var . ,val) var))
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(if (boundp var)
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(set-default
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var (if (not enabled)
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(prog1 (get var 'initial-value)
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(put var 'initial-value nil))
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(put var 'initial-value (symbol-value var))
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val))
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(add-to-list 'doom-debug--undefined-vars var))))
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((if (boundp var)
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(set-default var enabled)
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(add-to-list 'doom-debug--undefined-vars var)))))
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(when (called-interactively-p 'any)
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(when (fboundp 'explain-pause-mode)
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(explain-pause-mode (if enabled +1 -1))))
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;; Watch for changes in `doom-debug-variables', or when packages load (and
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;; potentially define one of `doom-debug-variables'), in case some of them
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;; aren't defined when `doom-debug-mode' is first loaded.
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(cond (enabled
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(message "Debug mode enabled! (Run 'M-x view-echo-area-messages' to open the log buffer)")
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;; Produce more helpful (and visible) error messages from errors
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;; emitted from hooks (particularly mode hooks), that usually go
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;; unnoticed otherwise.
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(advice-add #'run-hooks :override #'doom-run-hooks)
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;; Add time stamps to lines in *Messages*
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(advice-add #'message :before #'doom--timestamped-message-a)
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(add-variable-watcher 'doom-debug-variables #'doom-debug--watch-vars-h)
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(add-hook 'after-load-functions #'doom-debug--watch-vars-h))
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(t
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(advice-remove #'run-hooks #'doom-run-hooks)
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(advice-remove #'message #'doom--timestamped-message-a)
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(remove-variable-watcher 'doom-debug-variables #'doom-debug--watch-vars-h)
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(remove-hook 'after-load-functions #'doom-debug--watch-vars-h)
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(message "Debug mode disabled!")))))
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;;
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;;; Custom debuggers
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(autoload 'backtrace-get-frames "backtrace")
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(defun doom-backtrace ()
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"Return a stack trace as a list of `backtrace-frame' objects."
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;; (let* ((n 0)
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;; (frame (backtrace-frame n))
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;; (frame-list nil)
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;; (in-program-stack nil))
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;; (while frame
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;; (when in-program-stack
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;; (push (cdr frame) frame-list))
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;; (when (eq (elt frame 1) debugger)
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;; (setq in-program-stack t))
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;; ;; (when (and (eq (elt frame 1) 'doom-cli-execute)
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;; ;; (eq (elt frame 2) :doom))
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;; ;; (setq in-program-stack nil))
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;; (setq n (1+ n)
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;; frame (backtrace-frame n)))
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;; (nreverse frame-list))
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(cdr (backtrace-get-frames debugger)))
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(defun doom-backtrace-write-to-file (backtrace file)
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"Write BACKTRACE to FILE with appropriate boilerplate."
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(make-directory (file-name-directory file) t)
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(let ((doom-print-indent 0))
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(with-temp-file file
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(insert ";; -*- lisp-interaction -*-\n")
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(insert ";; vim: set ft=lisp:\n")
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(insert (format ";; command=%S\n" command-line-args))
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(insert (format ";; date=%S\n\n" (format-time-string "%Y-%m-%d %H-%M-%S" before-init-time)))
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(insert ";;;; ENVIRONMENT\n" (with-output-to-string (doom/version)) "\n")
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(let ((standard-output (current-buffer))
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(print-quoted t)
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(print-escape-newlines t)
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(print-escape-control-characters t)
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(print-symbols-bare t)
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(print-level nil)
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(print-circle nil)
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(n -1))
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(mapc (lambda (frame)
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(princ (format ";;;; %d\n" (cl-incf n)))
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(pp (list (cons (backtrace-frame-fun frame)
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(backtrace-frame-args frame))
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(backtrace-frame-locals frame)))
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(terpri))
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backtrace))
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file)))
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(defun doom-debugger (&rest args)
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"Enter `debugger' in interactive sessions, `doom-cli-debugger' otherwise.
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Writes backtraces to file and ensures the backtrace is recorded, so the user can
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always access it."
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(let ((backtrace (doom-backtrace)))
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;; Work around Emacs's heuristic (in eval.c) for detecting errors in the
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;; debugger, which would run this handler again on subsequent calls. Taken
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;; from `ert--run-test-debugger'.
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(cl-incf num-nonmacro-input-events)
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(if (and noninteractive (fboundp 'doom-cli-debugger))
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(apply #'doom-cli-debugger args)
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;; TODO Write backtraces to file
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;; TODO Write backtrace to a buffer in case recursive error interupts the
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;; debugger (happens more often than it should).
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(apply #'debug args))))
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;;
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;;; Time-stamped *Message* logs
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(defun doom--timestamped-message-a (format-string &rest args)
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"Advice to run before `message' that prepends a timestamp to each message.
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Activate this advice with:
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(advice-add 'message :before 'doom--timestamped-message-a)"
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(when (and (stringp format-string)
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message-log-max
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(not (string-equal format-string "%s%s")))
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(with-current-buffer "*Messages*"
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(let ((timestamp (format-time-string "[%F %T] " (current-time)))
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(deactivate-mark nil))
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(with-silent-modifications
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(goto-char (point-max))
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(if (not (bolp))
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(newline))
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(insert timestamp))))
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(let ((window (get-buffer-window "*Messages*")))
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(when (and window (not (equal (selected-window) window)))
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(with-current-buffer "*Messages*"
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(goto-char (point-max))
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(set-window-point window (point-max)))))))
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;;
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;;; Hooks
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;;;###autoload
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(defun doom-run-all-startup-hooks-h ()
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"Run all startup Emacs hooks. Meant to be executed after starting Emacs with
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-q or -Q, for example:
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emacs -Q -l init.el -f doom-run-all-startup-hooks-h"
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(setq after-init-time (current-time))
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(let ((inhibit-startup-hooks nil))
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(doom-run-hooks 'after-init-hook
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'delayed-warnings-hook
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'emacs-startup-hook
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'tty-setup-hook
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'window-setup-hook)))
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;;
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;;; Helpers
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(defsubst doom--collect-forms-in (file form)
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(when (file-readable-p file)
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(let (forms)
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(with-temp-buffer
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(insert-file-contents file)
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(with-syntax-table emacs-lisp-mode-syntax-table
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(while (re-search-forward (format "(%s " (regexp-quote form)) nil t)
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(let ((ppss (syntax-ppss)))
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(unless (or (nth 4 ppss)
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(nth 3 ppss))
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(save-excursion
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(goto-char (match-beginning 0))
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(push (sexp-at-point) forms))))))
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(nreverse forms)))))
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;;;###autoload
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(defun doom-info ()
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"Returns diagnostic information about the current Emacs session in markdown,
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ready to be pasted in a bug report on github."
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(require 'vc-git)
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(require 'doom-packages)
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(let ((default-directory doom-emacs-dir))
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(letf! ((defun sh (&rest args) (cdr (apply #'doom-call-process args)))
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(defun cat (file &optional limit)
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(with-temp-buffer
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(insert-file-contents file nil 0 limit)
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(buffer-string)))
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(defun abbrev-path (path)
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(replace-regexp-in-string
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(regexp-opt (list (user-login-name)) 'words) "$USER"
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(abbreviate-file-name path)))
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(defun symlink-path (file)
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(format "%s%s" (abbrev-path file)
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(if (file-symlink-p file) ""
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(concat " -> " (abbrev-path (file-truename file)))))))
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`((generated . ,(format-time-string "%b %d, %Y %H:%M:%S"))
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(system . ,(delq
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nil (list (doom-system-distro-version)
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(when (executable-find "uname")
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(sh "uname" "-msr"))
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(window-system))))
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(emacs . ,(delq
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nil (list emacs-version
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(bound-and-true-p emacs-repository-branch)
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(and (stringp emacs-repository-version)
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(substring emacs-repository-version 0 9))
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(symlink-path doom-emacs-dir))))
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(doom . ,(list doom-version
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(sh "git" "log" "-1" "--format=%D %h %ci")
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(symlink-path doom-user-dir)))
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(shell . ,(abbrev-path shell-file-name))
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(features . ,system-configuration-features)
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(traits
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. ,(mapcar
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#'symbol-name
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(delq
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nil (list (cond (noninteractive 'batch)
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((display-graphic-p) 'gui)
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('tty))
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(if (daemonp) 'daemon)
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(if (and (require 'server)
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(server-running-p))
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'server-running)
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(if (boundp 'chemacs-version)
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(intern (format "chemacs-%s" chemacs-version)))
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(if (file-exists-p doom-env-file)
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'envvar-file)
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(if (featurep 'exec-path-from-shell)
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'exec-path-from-shell)
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(if (file-symlink-p doom-emacs-dir)
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'symlinked-emacsdir)
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(if (file-symlink-p doom-user-dir)
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'symlinked-doomdir)
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(if (and (stringp custom-file) (file-exists-p custom-file))
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'custom-file)
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(if (doom-files-in `(,@doom-modules-dirs
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,doom-core-dir
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,doom-user-dir)
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:type 'files :match "\\.elc$")
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'byte-compiled-config)))))
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(custom
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,@(when (and (stringp custom-file)
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(file-exists-p custom-file))
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(cl-loop for (type var _) in (get 'user 'theme-settings)
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if (eq type 'theme-value)
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collect var)))
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(modules
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,@(or (cl-loop with cat = nil
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for key being the hash-keys of doom-modules
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if (or (not cat)
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(not (eq cat (car key))))
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do (setq cat (car key))
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and collect cat
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collect
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(let* ((flags (doom-module-get cat (cdr key) :flags))
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(path (doom-module-get cat (cdr key) :path))
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(module
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(append
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(cond ((null path)
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(list '&nopath))
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((not (file-in-directory-p path doom-modules-dir))
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(list '&user)))
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(if flags
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`(,(cdr key) ,@flags)
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(list (cdr key))))))
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(if (= (length module) 1)
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(car module)
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module)))
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'("n/a")))
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(packages
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,@(condition-case e
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(mapcar
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#'cdr (doom--collect-forms-in
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(doom-path doom-user-dir "packages.el")
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"package!"))
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(error (format "<%S>" e))))
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(unpin
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,@(condition-case e
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(mapcan #'identity
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(mapcar
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#'cdr (doom--collect-forms-in
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(doom-path doom-user-dir "packages.el")
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"unpin!")))
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(error (list (format "<%S>" e)))))
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(elpa
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,@(condition-case e
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(progn
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(unless (bound-and-true-p package--initialized)
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(package-initialize))
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(cl-loop for (name . _) in package-alist
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collect (format "%s" name)))
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(error (format "<%S>" e))))))))
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;;;###autoload
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(defun doom-info-string (&optional width nocolor)
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"Return the `doom-info' as a compact string.
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FILL-COLUMN determines the column at which lines will be broken."
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(with-temp-buffer
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(let ((doom-print-backend (unless nocolor doom-print-backend))
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(doom-print-indent 0))
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(dolist (spec (cl-remove-if-not #'cdr (doom-info)) (buffer-string))
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;; FIXME Refactor this horrible cludge, either here or in `format!'
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(insert! ((bold "%-10s ") (symbol-name (car spec)))
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("%s\n"
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(string-trim-left
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(indent
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(fill
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(if (listp (cdr spec))
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(mapconcat (doom-partial #'format "%s")
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(cdr spec)
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" ")
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(cdr spec))
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(- (or width 80) 11))
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11))))))))
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;;
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;;; Commands
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;;;###autoload
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(defun doom/version ()
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"Display the running version of Doom core, module sources, and Emacs."
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(interactive)
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(print! "%s\n%s\n%s"
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(format "%-13s v%-15s %s"
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"GNU Emacs"
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emacs-version
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emacs-repository-version)
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(format "%-13s v%-15s %s"
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"Doom core"
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doom-version
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(or (cdr (doom-call-process
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"git" "-C" doom-emacs-dir
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"log" "-1" "--format=%D %h %ci"))
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"n/a"))
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;; NOTE This is a placeholder. Our modules will be moved to its own
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;; repo eventually, and Doom core will later be capable of managing
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;; them like package sources.
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(format "%-13s v%-15s %s"
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"Doom modules"
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doom-modules-version
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(or (cdr (doom-call-process
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"git" "-C" doom-modules-dir
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"log" "-1" "--format=%D %h %ci"))
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"n/a"))))
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;;;###autoload
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(defun doom/info ()
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"Collects some debug information about your Emacs session, formats it and
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copies it to your clipboard, ready to be pasted into bug reports!"
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(interactive)
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(let ((buffer (get-buffer-create "*doom info*")))
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(with-current-buffer buffer
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(setq buffer-read-only t)
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(with-silent-modifications
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(erase-buffer)
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(insert (doom-info-string 86)))
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(pop-to-buffer buffer)
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(kill-new (buffer-string))
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(when (y-or-n-p "Your doom-info was copied to the clipboard.\n\nOpen pastebin.com?")
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(browse-url "https://pastebin.com")))))
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;;
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;;; Profiling
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(defvar doom--profiler nil)
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;;;###autoload
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(defun doom/toggle-profiler ()
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"Toggle the Emacs profiler. Run it again to see the profiling report."
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(interactive)
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(if (not doom--profiler)
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(profiler-start 'cpu+mem)
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(profiler-report)
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(profiler-stop))
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(setq doom--profiler (not doom--profiler)))
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