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bug#14850: 24.3; GDI Handles leak(Windows)


From: Akihiro KAYAMA
Subject: bug#14850: 24.3; GDI Handles leak(Windows)
Date: Fri, 12 Jul 2013 18:49:48 +0900

This bug report will be sent to the Bug-GNU-Emacs mailing list
and the GNU bug tracker at debbugs.gnu.org.  Please check that
the From: line contains a valid email address.  After a delay of up
to one day, you should receive an acknowledgment at that address.

Please write in English if possible, as the Emacs maintainers
usually do not have translators for other languages.

Please describe exactly what actions triggered the bug, and
the precise symptoms of the bug.  If you can, give a recipe
starting from `emacs -Q':

--
When using multiple emacs frames and shell buffer in Windows,
Emacs process's GDI Handles increase constantly.

How to reproduce:

 - emacs.exe -Q
 - M-x make-frame-command
 - M-x shell
 - ping 127.0.0.1 -t (continuous shell output)
 - M-x find-file (open some mini buffer)
 - inspect Emacs process's GDI Handles by Process Explorer(www.sysinternals.com)

As the increasing ratio is in proportion to number of frames, with a
dozen frames Emacs process can easily reach Windows OS limit(=10000 handles)
in a few minutes.
--


If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
For information about debugging Emacs, please read the file
c:/Program Files (x86)/emacs-24.3/etc/DEBUG.


In GNU Emacs 24.3.1 (i386-mingw-nt6.1.7601)
 of 2013-03-18 on MARVIN
Windowing system distributor `Microsoft Corp.', version 6.1.7601
Configured using:
 `configure --with-gcc (4.7) --cflags
 -ID:/devel/emacs/libs/libXpm-3.5.8/include
 -ID:/devel/emacs/libs/libXpm-3.5.8/src
 -ID:/devel/emacs/libs/libpng-dev_1.4.3-1/include
 -ID:/devel/emacs/libs/zlib-dev_1.2.5-2/include
 -ID:/devel/emacs/libs/giflib-4.1.4-1/include
 -ID:/devel/emacs/libs/jpeg-6b-4/include
 -ID:/devel/emacs/libs/tiff-3.8.2-1/include
 -ID:/devel/emacs/libs/gnutls-3.0.9/include
 -ID:/devel/emacs/libs/libiconv-1.13.1-1-dev/include
 -ID:/devel/emacs/libs/libxml2-2.7.8/include/libxml2'

Important settings:
  value of $LANG: JPN
  locale-coding-system: cp932
  default enable-multibyte-characters: t

Major mode: Shell

Minor modes in effect:
  shell-dirtrack-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
ESC x m a k e - f r <tab> - <tab> c o <tab> RET <switch-frame>
ESC x s h e l l RET p i n g SPC 1 2 7 . 0 . 0 . 1 SPC
- t RET ESC x f i n d - f i l e RET <down-mouse-1>
<mouse-movement> <mouse-1> C-g ESC x C-g C-g C-n C-n
ESC x r e p o r t - e m <tab> RET

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Making completion list...
You can run the command `make-frame-command' with C-x 5 2
Quit
completing-read-default: Command attempted to use minibuffer while in minibuffer
Quit [2 times]

Load-path shadows:
None found.

Features:
(shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml
mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev
gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util
mail-prsvr mail-utils shell pcomplete comint ansi-color ring help-mode
easymenu time-date japan-util tooltip ediff-hook vc-hooks
lisp-float-type mwheel dos-w32 ls-lisp w32-common-fns disp-table w32-win
w32-vars tool-bar dnd fontset image regexp-opt fringe tabulated-list
newcomment lisp-mode register page menu-bar rfn-eshadow timer select
scroll-bar mouse jit-lock font-lock syntax facemenu font-core frame cham
georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
korean japanese hebrew greek romanian slovak czech european ethiopic
indian cyrillic chinese case-table epa-hook jka-cmpr-hook help simple
abbrev minibuffer loaddefs button faces cus-face macroexp files
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget hashtable-print-readable backquote make-network-process
w32 multi-tty emacs)


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