From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: storm@cua.dk (Kim F. Storm) Newsgroups: gmane.emacs.devel Subject: Hang in "double/triple" select() Date: Fri, 22 Sep 2006 14:33:38 +0200 Message-ID: NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: sea.gmane.org 1158928547 2052 80.91.229.2 (22 Sep 2006 12:35:47 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Fri, 22 Sep 2006 12:35:47 +0000 (UTC) Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Sep 22 14:35:45 2006 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by ciao.gmane.org with esmtp (Exim 4.43) id 1GQkFA-0003de-C4 for ged-emacs-devel@m.gmane.org; Fri, 22 Sep 2006 14:35:03 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1GQkF9-0005ct-JT for ged-emacs-devel@m.gmane.org; Fri, 22 Sep 2006 08:34:59 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1GQkEq-0005aY-DM for emacs-devel@gnu.org; Fri, 22 Sep 2006 08:34:40 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1GQkEp-0005XJ-A2 for emacs-devel@gnu.org; Fri, 22 Sep 2006 08:34:39 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1GQkEp-0005Ww-5I for emacs-devel@gnu.org; Fri, 22 Sep 2006 08:34:39 -0400 Original-Received: from [195.41.46.235] (helo=pfepa.post.tele.dk) by monty-python.gnu.org with esmtp (Exim 4.52) id 1GQkIY-0003Mo-L6 for emacs-devel@gnu.org; Fri, 22 Sep 2006 08:38:30 -0400 Original-Received: from kfs-l.imdomain.dk.cua.dk (unknown [80.165.4.124]) by pfepa.post.tele.dk (Postfix) with SMTP id 34272FAC076 for ; Fri, 22 Sep 2006 14:34:37 +0200 (CEST) Original-To: emacs-devel@gnu.org User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.0.50 (gnu/linux) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:60100 Archived-At: I happened to be using a "slightly old" version of CVS Emacs GNU Emacs 22.0.50.3 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars) of 2006-01-19 on kfs-l.imdomain.dk and went away from the screen for an hours so, and when I returned, Emacs was stuck in a non-responsive mode with a "blank" emacs frame. I attached to it with GDB, and this is what I got: bt #0 0x403d8122 in select () from /lib/libc.so.6 #1 0x402bbdc4 in _XlcPublicMethods () from /usr/X11R6/lib/libX11.so.6 #2 0x40210ee8 in _XFlush () from /usr/X11R6/lib/libX11.so.6 #3 0x402124fd in _XReply () from /usr/X11R6/lib/libX11.so.6 #4 0x401ff722 in XInternAtom () from /usr/X11R6/lib/libX11.so.6 #5 0x4066bf31 in _XimExtension () from /usr/X11R6/lib/X11/locale/lib/common/ximcp.so.2 #6 0x4022e515 in XFilterEvent () from /usr/X11R6/lib/libX11.so.6 #7 0x080e59f5 in x_filter_event (dpyinfo=0x8621100, event=0xbfffd8a4) at xterm.c:5586 #8 0x080e7ad1 in XTread_socket (sd=0, expected=1, hold_quit=0xbfffe974) at xterm.c:7016 #9 0x0811a03b in read_avail_input (expected=1) at keyboard.c:6712 #10 0x0811a232 in handle_async_input () at keyboard.c:6858 #11 0x0811a275 in input_available_signal (signo=29) at keyboard.c:6900 #12 #13 0x403d8122 in select () from /lib/libc.so.6 #14 0x00000010 in ?? () #15 0x081164a6 in kbd_buffer_get_event (kbp=0xbffff0a0, used_mouse_menu=0xbffff39c) at keyboard.c:3935 #16 0x081148c5 in read_char (commandflag=1, nmaps=5, maps=0xbffff2a0, prev_event=137847801, used_mouse_menu=0xbffff39c) at keyboard.c:2862 #17 0x0811d41c in read_key_sequence (keybuf=0xbffff510, bufsize=30, ---Type to continue, or q to quit--- prompt=137847801, dont_downcase_last=0, can_return_switch_frame=1, fix_current_buffer=1) at keyboard.c:8857 #18 0x0811197c in command_loop_1 () at keyboard.c:1531 #19 0x0818a7aa in internal_condition_case (bfun=0x811167b , handlers=137892113, hfun=0x81111c0 ) at eval.c:1467 #20 0x081114f3 in command_loop_2 () at keyboard.c:1323 #21 0x0818a228 in internal_catch (tag=137888369, func=0x81114d4 , arg=137847801) at eval.c:1213 #22 0x081114a6 in command_loop () at keyboard.c:1302 #23 0x08110f3f in recursive_edit_1 () at keyboard.c:995 #24 0x08111080 in Frecursive_edit () at keyboard.c:1056 #25 0x0810f97d in main (argc=1, argv=0xbffffb24) at emacs.c:1789 #26 0x40311917 in __libc_start_main () from /lib/libc.so.6 (gdb) Unfortunately, the gdb process also hangs shortly after this (I made the stupid mistake of trying to flush Emacs' display.) #0 0x403d8122 in select () from /lib/libc.so.6 #1 0x402bbdc4 in _XlcPublicMethods () from /usr/X11R6/lib/libX11.so.6 #2 0x40210f02 in _XFlush () from /usr/X11R6/lib/libX11.so.6 #3 0x40210d19 in _XFlush () from /usr/X11R6/lib/libX11.so.6 #4 0x401f75ec in XFlush () from /usr/X11R6/lib/libX11.so.6 #5 0x080dda1e in x_flush (f=0x86a2e00) at xterm.c:389 #6 0x080dd9e7 in x_flush (f=0x0) at xterm.c:386 #7 (gdb) I'm not sure how to interpret this -- but given the recent reports of problems with emacs hanging in select() this might be related. The kernel is some RedHat 9 enterprise edition: Linux 2.4.21-builder-1 #3 Tue Aug 12 13:37:02 CDT 2003 i686 i686 i386 GNU/Linux -- Kim F. Storm http://www.cua.dk