XWin crash after the launch of startkde on a remote Red Hat 5 machine
Hello,
I'm using cygwin on Microsoft Windows XP with XWin version :
sh-3.2# XWin.exe -version
Welcome to the XWin X Server
Vendor: The Cygwin/X Project
Release: 1.8.0.0 (1080)
Build Date: 2010-04-02
Contact: cygwin-xfree@cygwin.com
I think I have found a bug in the XWin reset procedure which leads to
the start of two clipboard thread's and sometime to a crash of the X
server.
The crash can be produced by lauching startkde on a Red Hat 5 remote
machine (The crash should arrive after some minutes of work)
but the bug can simply be produced like this :
On my installation if I launch Xwin with this options :
XWin :0 -ac
then I do
xsetroot -solid '#00'
After setting the color, Xwin launches its reset procedure because
there is no more client connected ( the server loses the color but it
is the normal comportment isn't it ?
http://sourceware.org/ml/cygwin-xfree/2002-01/msg00106.html)
The problem comes from the clipboard thread. In this example, when the
server launches its reset procedure, the clipboard is in state
Launched but is not in state Started (Boolean variable about
clipboard status, see file hw/xwin/winclipboardthread.c).
This particular status of the ClipboardThread during server reset is
normaly managed by two if statements :
* An if in the file hw/xwin/InitOutput.c disables the exit of the
clipboard thread in this state
Extract of the file hw/xwin/InitOutput.c (with line number) :
169 winClipboardShutdown (void)
170 {
171 /* Close down clipboard resources */
172 if (g_fClipboard g_fClipboardLaunched g_fClipboardStarted)
173 {
174 /* Synchronously destroy the clipboard window */
175 if (g_hwndClipboard != NULL)
176 {
177 SendMessage (g_hwndClipboard, WM_DESTROY, 0, 0);
178 /* NOTE: g_hwndClipboard is set to NULL in
winclipboardthread.c */
179 }
180 else
181 return;
182
183 /* Wait for the clipboard thread to exit */
184 pthread_join (g_ptClipboardProc, NULL);
185
186 g_fClipboardLaunched = FALSE;
187 g_fClipboardStarted = FALSE;
188
189 winDebug (winClipboardShutdown - Clipboard thread has exited.\n);
190 }
191 }
* An if statement in the file hw/xwin/winclipboardwrappers.c
prohibits the launch of clipboard thread if one is already Launched.
Extract of the file hw/xwin/winclipboardwrappers.c (with line number)
256 /* If the clipboard client has already been started, abort */
257 if (g_fClipboardLaunched)
258 {
259 ErrorF (winProcEstablishConnection - Clipboard client already
260 launched, returning.\n);
261 return iReturn;
262 }
The problem is that the Boolean variables g_fClipboardLaunched and
g_fClipboardStarted are re-initialized by the server reset procedure
(function winInitializeGlobals of the file hw/xwin/winglobals.c)
Extract of the file hw/xwin/winglobals.c (with line number)
128 /*
129 * Re-initialize global variables that are invalidated 130 * by a
server reset.
131 */
132
133 void
134 winInitializeGlobals (void)
135 {
136 g_dwCurrentThreadID = GetCurrentThreadId ();
137 g_hwndKeyboardFocus = NULL;
138 #ifdef XWIN_CLIPBOARD
139 g_fClipboardLaunched = FALSE;
140 g_fClipboardStarted = FALSE;
141 g_iClipboardWindow = None;
142 g_pClipboardDisplay = NULL;
143 g_atomLastOwnedSelection = None;
144 g_hwndClipboard = NULL;
145 #endif
146 }
The consequence of this Re-initialization in this particular situation
is that the clipboard thread is launched two times and sometimes leads
to a crash of the X server.
You can see the double launch of the clipboard thread at the end of
the attached log file Xwin.0.log ( 2 times the sentence :
winClipboardProc - XOpenDisplay () returned and successfully opened
the display. )
To fix this bug I purpose to remove the variables g_fClipboardLaunched
and g_fClipboardStarted of the winInitializeGlobals (void) function,
as their re-initializations are handled in in the files :
hw/xwin/InitOutput.c.
That what is doing the patch Attached to this email.
Regards,
Michel Hummel
XWin_winglobals_ClipboardThread.patch
Description: Binary data
XWin.0.log
Description: Binary data
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Re: Missing charsets in String to FontSet conversion
On Tue, 3 Aug 2010, Ryan Johnson wrote: Hi all, At some point an annoyance appeared with my xterm windows: The first time I use [ctrl]+mouse click in any window, that xterm becomes unresponsive for about 5 seconds with the CPU pegged to 100%. After the five seconds is up, whatever shell spawned the xterm receives the following message: Warning: Missing charsets in String to FontSet conversion After that all works normally (until I open the next xterm window). Is there a way to diagnose what the problem is? I don't know what FontSet string the error even refers to, let alone which parts of that string were invalid. In any case, it really shouldn't take five seconds of hard CPU crunching to detect and report an invalid input string. This topic came up last year, iirc the issue was this: http://invisible-island.net/xterm/xterm.faq.html#slow_menus -- Thomas E. Dickey http://invisible-island.net ftp://invisible-island.net -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Fwd: Bootstrapping Emacs (trunk) with GCC = 4.5.1 [Cygwin]
Messaggio originale Oggetto: Bootstrapping Emacs (trunk) with GCC = 4.5.1 [Cygwin] Data: Tue, 03 Aug 2010 13:50:09 +0200 Mittente: Angelo Graziosi A: Emacs emacs-devel AT gnu DOT org On Cygwin, I have tried to bootstrap Emacs-trunk using gcc-4.5.1 (just released) and gcc-4.6-20100731 (snapshot), but the build fails as follows: === [...] gcc-4.6 -c -Demacs -DHAVE_CONFIG_H -I. -I/tmp/emacs/src -D_REENTRANT -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng12 -I/usr/include/freetype2 -D_REENTRANT -I/usr/include/librsvg-2 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/gtk-2.0 -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng12 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -DORBIT2=1 -D_REENTRANT -I/usr/include/gconf/2 -I/usr/include/orbit-2.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -MMD -MF deps/xfns.d -Wold-style-definition -Wdeclaration-after-statement -Wno-pointer-sign -g -O2 /tmp/emacs/src/xfns.c In file included from /usr/include/X11/Xos.h:146:0, from /tmp/emacs/src/xfaces.c:277: /usr/include/X11/Xarch.h:43:30: fatal error: sys/byteorder.h: No such file or directory compilation terminated. make[2]: *** [xfaces.o] Error 1 make[2]: *** Waiting for unfinished jobs make[2]: Leaving directory `/tmp/emacs/Work/src' make[1]: *** [src] Error 2 make[1]: Leaving directory `/tmp/emacs/Work' make: *** [bootstrap] Error 2 === The culprit are these statements in '/usr/include/X11/Xarch.h': [...] # if defined(SVR4) || defined(__SVR4) # include sys/byteorder.h # elif [...] On Cygwin, it seems that the if defined(SVR4)... branch is executed and the header 'byteorder.h' is not found because it lives in /usr/include/asm not in /usr/include/sys! Now I have tried the same on GNU/Linux Kubuntu 10.04, on which that header, 'byteorder.h', lives in the same /usr/include/asm directory as on Cygwin, but the bootstrap passes, almost surely because the 'elif' branch is executed! So, on Cygwin, I adopted the workaround to create a symbolic link: cd /usr/include/sys ln -sf ../asm/byteorder.h byteorder.h Now the bootstrap (with GCC = 4.5.1) passes also on Cygwin, and works. Have you better ideas on this issue? Thanks, Angelo. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: Missing charsets in String to FontSet conversion
On 03/08/2010 10:00, Thomas Dickey wrote: On Tue, 3 Aug 2010, Ryan Johnson wrote: At some point an annoyance appeared with my xterm windows: The first time I use [ctrl]+mouse click in any window, that xterm becomes unresponsive for about 5 seconds with the CPU pegged to 100%. After the five seconds is up, whatever shell spawned the xterm receives the following message: Warning: Missing charsets in String to FontSet conversion After that all works normally (until I open the next xterm window). Is there a way to diagnose what the problem is? I don't know what FontSet string the error even refers to, let alone which parts of that string were invalid. In any case, it really shouldn't take five seconds of hard CPU crunching to detect and report an invalid input string. There's some more discussion at http://sourceware.org/bugzilla/show_bug.cgi?id=10948 Installing the fonts font-isas-misc, font-jis-misc and font-daewoo-misc should also work around the problem, which can also be seen with other applications, as that ensures that at least one font exists for every charset. I agree that the error message sucks and should tell you the charsets which are missing and what string it was attempting to convert. This topic came up last year, iirc the issue was this: http://invisible-island.net/xterm/xterm.faq.html#slow_menus -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: Missing charsets in String to FontSet conversion
On 3 August 2010 14:35, Jon TURNEY wrote: On 03/08/2010 10:00, Thomas Dickey wrote: On Tue, 3 Aug 2010, Ryan Johnson wrote: At some point an annoyance appeared with my xterm windows: The first time I use [ctrl]+mouse click in any window, that xterm becomes unresponsive for about 5 seconds with the CPU pegged to 100%. After the five seconds is up, whatever shell spawned the xterm receives the following message: Warning: Missing charsets in String to FontSet conversion After that all works normally (until I open the next xterm window). Is there a way to diagnose what the problem is? I don't know what FontSet string the error even refers to, let alone which parts of that string were invalid. In any case, it really shouldn't take five seconds of hard CPU crunching to detect and report an invalid input string. There's some more discussion at http://sourceware.org/bugzilla/show_bug.cgi?id=10948 Installing the fonts font-isas-misc, font-jis-misc and font-daewoo-misc should also work around the problem, which can also be seen with other applications, as that ensures that at least one font exists for every charset. I agree that the error message sucks and should tell you the charsets which are missing and what string it was attempting to convert. This topic came up last year, iirc the issue was this: http://invisible-island.net/xterm/xterm.faq.html#slow_menus Could the menuLocale resource setting mentioned there be added to Cygwin xterm's default config at /etc/X11/app-defaults/XTerm? Andy -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: Missing charsets in String to FontSet conversion
On 8/3/2010 3:35 PM, Jon TURNEY wrote: On 03/08/2010 10:00, Thomas Dickey wrote: On Tue, 3 Aug 2010, Ryan Johnson wrote: At some point an annoyance appeared with my xterm windows: The first time I use [ctrl]+mouse click in any window, that xterm becomes unresponsive for about 5 seconds with the CPU pegged to 100%. After the five seconds is up, whatever shell spawned the xterm receives the following message: Warning: Missing charsets in String to FontSet conversion After that all works normally (until I open the next xterm window). Is there a way to diagnose what the problem is? I don't know what FontSet string the error even refers to, let alone which parts of that string were invalid. In any case, it really shouldn't take five seconds of hard CPU crunching to detect and report an invalid input string. There's some more discussion at http://sourceware.org/bugzilla/show_bug.cgi?id=10948 Installing the fonts font-isas-misc, font-jis-misc and font-daewoo-misc should also work around the problem, which can also be seen with other applications, as that ensures that at least one font exists for every charset. I agree that the error message sucks and should tell you the charsets which are missing and what string it was attempting to convert. This topic came up last year, iirc the issue was this: http://invisible-island.net/xterm/xterm.faq.html#slow_menus The xterm FAQ's workaround (setting LANG=C) indeed works, but then I lose all of UTF-8, including some of the punctuation marks man pages and gcc errors like to use. As I mentioned before, I'd seen references to those fonts but wasn't sure it would actually help me. I just installed them and, sure enough, there's still some (fewer?) missing charsets. The delay dropped to only 2-3 seconds now though, so I guess that helps. Is there a way to diagnose which fonts/charsets are still missing? Regards, Ryan -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: Can't Paste into Xwindow application from Winows7
On 02/08/2010 20:50, Scott Bushnell wrote: I running Windows 7 the latest version of Cygwin/X. I can paste from my X windows application to any Windows application but can't paste to X windows from Windows7. It works fine using Windows XP. P.S. How can I debug/troubleshoot this. [1] suggests some steps which you might take. You should also mention if you are using a Windows 'clipboard manager' application. [1] http://sourceware.org/ml/cygwin-xfree/2009-10/msg00129.html -- Jon TURNEY Volunteer Cygwin/X X Server maintainer -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: Re: Slow response to keypresses in xorg-server-1.8.0-1
On 8:59 PM, Jon TURNEY wrote: I've cooked up a small additional change which should prevent this blocking behaviour and uploaded a build [2]. It seems to resolve the problem in this specific case. Perhaps you could try it out and see if it helps? [1] http://cygwin.com/ml/cygwin-xfree/2010-02/msg00124.html [2] ftp://cygwin.com/pub/cygwinx/XWin.20100630-git-bc2f74e105146c36.exe.bz2 I just downloaded this version, and it indeed fixes the slow [alt]-[tab] behavior, but I'm still having one problem: the invisible xterm root window covers my windows taskbar until I've moused over it for several seconds (or alt-tab somewhere else first). Ideas? Ryan -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: Missing charsets in String to FontSet conversion
On Tue, 3 Aug 2010, Andy Koppe wrote: On 3 August 2010 14:35, Jon TURNEY wrote: On 03/08/2010 10:00, Thomas Dickey wrote: This topic came up last year, iirc the issue was this: http://invisible-island.net/xterm/xterm.faq.html#slow_menus Could the menuLocale resource setting mentioned there be added to Cygwin xterm's default config at /etc/X11/app-defaults/XTerm? fwiw, I made it default in #257 (current is #261) http://invisible-island.net/xterm/xterm.log.html#xterm_257 -- Thomas E. Dickey http://invisible-island.net ftp://invisible-island.net -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
