GNU bug report logs - #58338
29.0.50; mapatoms called on more elements than in obarray?

Previous Next

Full log

View this message in rfc822 format

From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Philip Kaludercic <philipk <at> posteo.net>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#58338: closed (29.0.50; mapatoms called on more elements than
 in obarray?)
Date: Thu, 06 Oct 2022 18:52:02 +0000

[Message part 1 (text/plain, inline)]

Your message dated Thu, 06 Oct 2022 18:51:43 +0000
with message-id <87mta8lr9c.fsf <at> posteo.net>
and subject line Re: bug#58338: 29.0.50; mapatoms called on more elements than in obarray?
has caused the debbugs.gnu.org bug report #58338,
regarding 29.0.50; mapatoms called on more elements than in obarray?
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


-- 
58338: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=58338
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

[Message part 2 (message/rfc822, inline)]

From: Philip Kaludercic <philipk <at> posteo.net>
To: bug-gnu-emacs <at> gnu.org
Subject: 29.0.50; mapatoms called on more elements than in obarray?
Date: Thu, 06 Oct 2022 16:16:03 +0000

From reading the docstring of `mapatoms', I would assume that this would
evaluate to t:

(let ((i 0))
  (mapatoms (lambda (_) (setq i (1+ i))) obarray)
  (= (length obarray) i))

But instead on my system I get (length obarray) ↝ 15121 and and i ↝
78050, which is are at a ratio of 5.16169565505.

Also interesting, if I intern a variable "foo", the value of i increases
to 83106, while (length obarray) stays the same (?)

Interestingly enough, I'd expect this to at least output a single
message:

(let ((ht (make-hash-table)))
  (mapatoms (lambda (s) (cl-incf (gethash s ht 0))))
  (maphash (lambda (sym i)
	     (when (> i 1)
	       (message "%S: %d" sym i)))
	   ht))

but apparently no symbol is invoked twice.  Not even by name

(let ((ht (make-hash-table :test #'equal)))
  (mapatoms (lambda (s) (cl-incf (gethash (symbol-name s) ht 0))))
  (maphash (lambda (sym i)
	     (when (> i 1)
	       (message "%S: %d" sym i)))
	   ht))

Is this perhaps related to symbol positions?  I don't quite understand
bare symbols yet, but it doesn't appear to change anything if I check

(let ((i 0))
  (mapatoms (lambda (s)
    (when (bare-symbol-p s)
      (setq i (1+ i))))
    obarray)
  (list (length obarray) i))

I am confused.  All I want is a max value for a progress reporter :(

In GNU Emacs 29.0.50 (build 14, x86_64-pc-linux-gnu, GTK+ Version
 3.24.34, cairo version 1.17.6) of 2022-10-06 built on rhea
Repository revision: 2c4c72b45d833b6ccdd2cc06ca3c6c9e9ad54357
Repository branch: feature/package+vc
System Description: Fedora Linux 36 (Workstation Edition)

Configured using:
 'configure --with-pgtk --with-imagemagick'

Configured features:
CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GSETTINGS HARFBUZZ IMAGEMAGICK
JPEG JSON LIBSELINUX LIBSYSTEMD LIBXML2 MODULES NOTIFY INOTIFY PDUMPER
PGTK PNG RSVG SECCOMP SOUND SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS XIM
GTK3 ZLIB

Important settings:
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
  TeX-PDF-mode: t
  rcirc-color-mode: t
  rcirc-track-minor-mode: t
  global-git-commit-mode: t
  magit-auto-revert-mode: t
  outline-minor-mode: t
  flymake-mode: t
  yas-minor-mode: t
  flyspell-mode: t
  repeat-mode: t
  display-battery-mode: t
  display-time-mode: t
  diff-hl-flydiff-mode: t
  diff-hl-mode: t
  winner-mode: t
  windmove-mode: t
  corfu-history-mode: t
  corfu-mode: t
  vertico-multiform-mode: t
  vertico-mode: t
  electric-pair-mode: t
  shell-dirtrack-mode: t
  recentf-mode: t
  save-place-mode: t
  savehist-mode: t
  pixel-scroll-precision-mode: t
  pixel-scroll-mode: t
  xterm-mouse-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  eldoc-mode: t
  show-paren-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tab-bar-mode: t
  file-name-shadow-mode: t
  context-menu-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  line-number-mode: t
  indent-tabs-mode: t
  transient-mark-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t

Load-path shadows:
/home/philip/.config/emacs/site-lisp/emacs-inspector/inspector hides /home/philip/.config/emacs/elpa/inspector-0.8/inspector
/home/philip/.config/emacs/site-lisp/emacs-inspector/inspector-tests hides /home/philip/.config/emacs/elpa/inspector-0.8/inspector-tests
/home/philip/.config/emacs/site-lisp/flymake-proselint/flymake-proselint hides /home/philip/.config/emacs/elpa/flymake-proselint-0.3.0/flymake-proselint
/home/philip/.config/emacs/elpa/transient-0.3.7/transient hides /home/philip/Source/emacs/lisp/transient
/home/philip/.config/emacs/elpa/xref-1.5.1/xref hides /home/philip/Source/emacs/lisp/progmodes/xref

Features:
(shadow emacsbug descr-text solar cal-dst holidays holiday-loaddefs
cal-move loadhist reporter ert slime etags fileloop arc-mode
archive-mode hyperspec package-vc gnus-search eieio-opt speedbar ezimage
dframe flymake-proselint markdown-mode find-dired grep magit-ediff ediff
ediff-merg ediff-mult ediff-wind ediff-diff ediff-help ediff-init
ediff-util goto-addr eudc-capf eudc cus-start eudc-vars magit-patch
emacs-news-mode avy rect focus tex-info tex texmathp texinfo
texinfo-loaddefs gnus-fun sh-script smie executable shortdoc facemenu
two-column dictionary dictionary-connection ffap find-file magit-extras
face-remap pulse color xref ibuffer ibuffer-loaddefs cl-print
vertico-buffer consult-vertico consult compat-28 magit-bookmark bookmark
whitespace bug-reference mule-util flow-fill modus-vivendi-theme nndoc
gnus-dup url-cache display-line-numbers debbugs-gnu debbugs-compat
debbugs soap-client url-http url-auth url-gw rng-xsd rng-dt rng-util
xsd-regexp mailalias smtpmail autocrypt-message ecomplete rcirc-color
rcirc ietf-drums-date sort smiley gnus-cite mm-archive mail-extr textsec
uni-scripts idna-mapping ucs-normalize uni-confusable textsec-check qp
gnus-bcklg gnus-async gnus-ml disp-table vc-fossil vc-hg vc-bzr vc-src
vc-sccs vc-svn vc-cvs vc-rcs org-element avl-tree generator ol-eww eww
xdg url-queue mm-url ol-rmail ol-mhe ol-irc ol-info ol-gnus nnselect
ol-docview doc-view jka-compr image-mode exif ol-bibtex ol-bbdb ol-w3m
ol-doi org-link-doi org ob ob-tangle ob-ref ob-lob ob-table ob-exp
org-macro org-footnote org-src ob-comint org-pcomplete org-list
org-faces org-entities org-version ob-emacs-lisp ob-core ob-eval
org-table oc-basic bibtex ol org-keys oc org-compat advice org-macs
org-loaddefs cal-menu calendar cal-loaddefs char-fold misearch
multi-isearch dired-aux gnus-dired ef-duo-light-theme ef-duo-dark-theme
ef-night-theme ef-spring-theme ef-themes vc-git buffer-env compat
misterioso-theme cus-theme orderless vertico-directory vertico-flat
magit-submodule magit-obsolete magit-blame magit-stash magit-reflog
magit-bisect magit-push magit-pull magit-fetch magit-clone magit-remote
magit-commit magit-sequence magit-notes magit-worktree magit-tag
magit-merge magit-branch magit-reset magit-files magit-refs magit-status
magit magit-repos magit-apply magit-wip magit-log which-func imenu
edebug debug backtrace find-func magit-diff smerge-mode git-commit
log-edit add-log magit-core magit-autorevert autorevert filenotify
magit-margin magit-transient magit-process with-editor server magit-mode
transient edmacro kmacro magit-git magit-section magit-utils crm dash
vc-backup copyright autocrypt-gnus autocrypt nndraft nnmh utf-7 nnfolder
epa-file network-stream nsm gnus-agent gnus-srvr gnus-score score-mode
nnvirtual gnus-msg gnus-art mm-uu mml2015 mm-view mml-smime smime gnutls
dig nntp gnus-cache gnus-sum shr pixel-fill kinsoku url-file svg dom
gnus-group gnus-undo gnus-start gnus-dbus gnus-cloud nnimap nnmail
mail-source utf7 nnoo gnus-spec gnus-int gnus-range message yank-media
puny rfc822 mml mml-sec epa derived epg rfc6068 epg-config mm-decode
mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader
gnus-win noutline outline checkdoc flymake-proc flymake warnings
yasnippet-snippets cl-extra yasnippet flyspell ispell auth-source-pass
repeat project battery dbus xml shell-command+ thingatpt dired-x dired
dired-loaddefs time sendmail rfc2047 rfc2045 ietf-drums gnus nnheader
gnus-util mail-utils range mm-util mail-prsvr finder-inf diff-hl-flydiff
diff diff-hl log-view pcvs-util vc-dir ewoc vc vc-dispatcher diff-mode
easy-mmode hippie-exp winner windmove corfu-history corfu
vertico-multiform vertico elec-pair tramp-cache time-stamp tramp-sh
tramp tramp-loaddefs trampver tramp-integration cus-edit pp icons
files-x tramp-compat rx shell pcomplete parse-time iso8601 time-date
ls-lisp format-spec recentf tree-widget wid-edit saveplace savehist
pixel-scroll cua-base xt-mouse modus-operandi-theme modus-themes pcase
cus-load setup site-lisp auto-site compile text-property-search comint
ansi-osc ansi-color autoload loaddefs-gen lisp-mnt debbugs-autoloads
rcirc-color-autoloads inspector-autoloads ef-themes-autoloads
flylisp-autoloads keycast-autoloads flymake-proselint-autoloads
which-key-autoloads geiser-guile-autoloads focus-autoloads
vertico-autoloads consult-autoloads vc-fossil-autoloads corfu-autoloads
diff-hl-autoloads crdt-autoloads embark-autoloads auctex-autoloads
tex-site magit-autoloads buffer-env-autoloads compat-autoloads
geiser-chibi-autoloads geiser-impl help-fns radix-tree help-mode
geiser-custom geiser-base ring geiser-autoloads slime-autoloads
transient-autoloads xref-autoloads info package browse-url url url-proxy
url-privacy url-expand url-methods url-history url-cookie
generate-lisp-file url-domsuf url-util mailcap url-handlers url-parse
auth-source cl-seq eieio eieio-core cl-macs password-cache json subr-x
map byte-opt gv bytecomp byte-compile cconv url-vars cl-loaddefs cl-lib
rmc iso-transl tooltip eldoc paren electric uniquify ediff-hook vc-hooks
lisp-float-type elisp-mode mwheel term/pgtk-win pgtk-win term/common-win
pgtk-dnd tool-bar dnd fontset image regexp-opt fringe tabulated-list
replace newcomment text-mode lisp-mode prog-mode register page tab-bar
menu-bar rfn-eshadow isearch easymenu timer select scroll-bar mouse
jit-lock font-lock syntax font-core term/tty-colors frame minibuffer
nadvice seq simple cl-generic indonesian philippine cham georgian
utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean
japanese eucjp-ms cp51932 hebrew greek romanian slovak czech european
ethiopic indian cyrillic chinese composite emoji-zwj charscript charprop
case-table epa-hook jka-cmpr-hook help abbrev obarray oclosure
cl-preloaded button loaddefs faces cus-face macroexp files window
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget keymap hashtable-print-readable backquote threads dbusbind
inotify dynamic-setting system-font-setting font-render-setting cairo
gtk pgtk multi-tty make-network-process emacs)

Memory information:
((conses 16 1442594 267553)
 (symbols 48 63865 588)
 (strings 32 303656 13102)
 (string-bytes 1 10565718)
 (vectors 16 140881)
 (vector-slots 8 3010917 366454)
 (floats 8 3863 612)
 (intervals 56 72554 2447)
 (buffers 1000 114))

[Message part 3 (message/rfc822, inline)]

From: Philip Kaludercic <philipk <at> posteo.net>
To: Gerd Möllmann <gerd.moellmann <at> gmail.com>
Cc: 58338-done <at> debbugs.gnu.org
Subject: Re: bug#58338: 29.0.50; mapatoms called on more elements than in
 obarray?
Date: Thu, 06 Oct 2022 18:51:43 +0000

Gerd Möllmann <gerd.moellmann <at> gmail.com> writes:

> On 22-10-06 20:28 , Philip Kaludercic wrote:
>> Gerd Möllmann <gerd.moellmann <at> gmail.com> writes:
>> 
>>> On 22-10-06 20:21 , Philip Kaludercic wrote:
>>>
>>>> In that case what confuses me is that (length obarray) doesn't throw an
>>>> error.  Or what useful information does that give me?
>>>
>>> It's a vector, and each vector has a length.
>> But isn't the fact that it is a vector just a detail of the internal
>> implementation?
>
> It's all history.  Obarray existed since the Big Bang.  Don't use it.

OK, then I'll close the report.  But if I am not supposed to use the
obarrays, what would you recommend if I want to count the number of
known symbols?  (Context:  I am trying to detect all variables defined
in a package, and since that takes a while I wrapped the `mapatoms' call in
a progress reporter, that needs a maximal value).

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.