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find-gc.el misc fixes

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The whole file looks obsolete and/or broken.

* lisp/emacs-lisp/find-gc.el (find-gc-source-directory): Give it a value.
(find-gc-source-files): Update some names.
(trace-call-tree): Simplify and update.  Avoid predictable temp-file names.
This commit is contained in:
Glenn Morris 2014-05-05 20:53:31 -07:00
parent 088e020172
commit 0c4decaeb1
2 changed files with 43 additions and 44 deletions
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7
lisp/ChangeLog
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@ -1,3 +1,10 @@
2014-05-06 Glenn Morris <rgm@gnu.org>
* emacs-lisp/find-gc.el (find-gc-source-directory): Give it a value.
(find-gc-source-files): Update some names.
(trace-call-tree): Simplify and update.
Avoid predictable temp-file names. (http://bugs.debian.org/747100)
2014-05-05 Stefan Monnier <monnier@iro.umontreal.ca>
* minibuffer.el (completion--try-word-completion): Revert fix for

80
lisp/emacs-lisp/find-gc.el
View file

@ -23,14 +23,15 @@
;; Produce in find-gc-unsafe-list the set of all functions that may invoke GC.
;; This expects the Emacs sources to live in find-gc-source-directory.
;; It creates a temporary working directory /tmp/esrc.
;;; Code:
(defvar find-gc-unsafe-list nil
"The list of unsafe functions is placed here by `find-gc-unsafe'.")
(defvar find-gc-source-directory)
(defvar find-gc-source-directory
(file-name-as-directory (expand-file-name "src" source-directory))
"Directory containing Emacs C sources.")
(defvar find-gc-subrs-callers nil
"Alist of users of subrs, from GC testing.
@ -59,14 +60,14 @@ Each entry has the form (FUNCTION . FUNCTIONS-IT-CALLS).")
"indent.c" "search.c" "regex.c" "undo.c"
"alloc.c" "data.c" "doc.c" "editfns.c"
"callint.c" "eval.c" "fns.c" "print.c" "lread.c"
"abbrev.c" "syntax.c" "unexcoff.c"
"syntax.c" "unexcoff.c"
"bytecode.c" "process.c" "callproc.c" "doprnt.c"
"x11term.c" "x11fns.c"))
"xterm.c" "xfns.c"))
(defun find-gc-unsafe ()
"Return a list of unsafe functions--that is, which can call GC.
Also store it in `find-gc-unsafe'."
Also store it in `find-gc-unsafe-list'."
(trace-call-tree nil)
(trace-use-tree)
(find-unsafe-funcs 'Fgarbage_collect)
@ -102,47 +103,38 @@ Also store it in `find-gc-unsafe'."
(defun trace-call-tree (&optional already-setup)
(defun trace-call-tree (&optional ignored)
(message "Setting up directories...")
(or already-setup
(progn
;; Gee, wouldn't a built-in "system" function be handy here.
(call-process "csh" nil nil nil "-c" "rm -rf /tmp/esrc")
(call-process "csh" nil nil nil "-c" "mkdir /tmp/esrc")
(call-process "csh" nil nil nil "-c"
(format "ln -s %s/*.[ch] /tmp/esrc"
find-gc-source-directory))))
(with-current-buffer (get-buffer-create "*Trace Call Tree*")
(setq find-gc-subrs-called nil)
(let ((case-fold-search nil)
(files find-gc-source-files)
name entry)
(while files
(message "Compiling %s..." (car files))
(call-process "csh" nil nil nil "-c"
(format "gcc -dr -c /tmp/esrc/%s -o /dev/null"
(car files)))
(erase-buffer)
(insert-file-contents (concat "/tmp/esrc/" (car files) ".rtl"))
(while (re-search-forward ";; Function \\|(call_insn " nil t)
(if (= (char-after (- (point) 3)) ?o)
(progn
(looking-at "[a-zA-Z0-9_]+")
(setq name (intern (buffer-substring (match-beginning 0)
(match-end 0))))
(message "%s : %s" (car files) name)
(setq entry (list name)
find-gc-subrs-called (cons entry find-gc-subrs-called)))
(if (looking-at ".*\n?.*\"\\([A-Za-z0-9_]+\\)\"")
(setq find-gc-subrs-called nil)
(let ((case-fold-search nil)
(default-directory find-gc-source-directory)
(files find-gc-source-files)
name entry rtlfile)
(dolist (file files)
(message "Compiling %s..." file)
(call-process "gcc" nil nil nil "-I" "." "-I" "../lib"
"-fdump-rtl-expand" "-o" null-device "-c" file)
(setq rtlfile
(file-expand-wildcards (format "%s.*.expand" file) t))
(if (/= 1 (length rtlfile))
(message "Error compiling `%s'?" file)
(with-temp-buffer
(insert-file-contents (setq rtlfile (car rtlfile)))
(delete-file rtlfile)
(while (re-search-forward ";; Function \\|(call_insn " nil t)
(if (= (char-after (- (point) 3)) ?o)
(progn
(setq name (intern (buffer-substring (match-beginning 1)
(match-end 1))))
(or (memq name (cdr entry))
(setcdr entry (cons name (cdr entry))))))))
(delete-file (concat "/tmp/esrc/" (car files) ".rtl"))
(setq files (cdr files)))))
)
(looking-at "[a-zA-Z0-9_]+")
(setq name (intern (match-string 0)))
(message "%s : %s" (car files) name)
(setq entry (list name)
find-gc-subrs-called
(cons entry find-gc-subrs-called)))
(if (looking-at ".*\n?.*\"\\([A-Za-z0-9_]+\\)\"")
(progn
(setq name (intern (match-string 1)))
(or (memq name (cdr entry))
(setcdr entry (cons name (cdr entry)))))))))))))
(defun trace-use-tree ()
(setq find-gc-subrs-callers (mapcar 'list (mapcar 'car find-gc-subrs-called)))