Closed GoogleCodeExporter closed 9 years ago
GoogleCodeExporter
commented
9 years ago I forgot to mention that I tried also on a Ubuntu 32 bit, with jdk 1.5 and 1.6,
and
I get the same SIGSEGV on the JVM.
-AntonioOriginal comment by antonio....@gmail.com on 28 Aug 2008 at 4:07
GoogleCodeExporter
commented
9 years ago I'm currently using 1.6.0_07 32 bit (downloaded directly from Sun) on Ubuntu
x86_64
for hosted mode. However, in Eclipse and regular Java compiles I use 1.6.0_06
64 bit
(from the Ubuntu package) successfully. I definitely had issues with 32 bit
1.5.0
JVMs and hosted mode, although different from yours.
If you like, you can check out the DragDrop project from 'trunk' @ r816 and run
the
command line compile script to compare resultsOriginal comment by fredsa on 29 Aug 2008 at 6:06
GoogleCodeExporter
commented
9 years ago Hello Fred,
thank you for your answer, but I was not able to make it work. I tried also the
rev
816, but the jvm crashes in the same way.
Anyway, I am using apache to serve the pages, eclipse to see the code, and the
.cmd
script (modified for Linux) to compile the demo.
I hope I will understand how it works!
Thanks again,
-AntonioOriginal comment by antonio....@gmail.com on 29 Aug 2008 at 10:27
GoogleCodeExporter
commented
9 years ago Antonio,
I'd search for this particular flavor of SIGSEGV. Also, check the contents of
your
hs_err_pid*.log. I don't think this is anythink gwt-dnd specific. You may just
look
at issues with your Linux (libraries) patch levels. I'm currently using Ubuntu
8.04
x86_64 if that helps.Original comment by fredsa on 31 Aug 2008 at 11:19
GoogleCodeExporter
commented
9 years ago Fred,
as I told you in the second message, I tried also an Ubuntu 8.04, 32 bit.
I re-installed it fresh on a virtual machine on my CentOS x86_64, using
qemu-kvm.
The Ubuntu 8.04 installed normally and is working fine, but running the dnd-demo
shell file makes the JVM die. So I think there must be something wrong in what
I am
doing, 'cause the Ubuntu is 32 bit, and there are no 64 bit libraries around.
This is what I did:
1. I downloaded gwt-linux-1.5.1 and untarred, copied the gwt-dnd-2.5.4.jar in
the
root directory of the gwt, downloaded again the sources of dnd using:
svn checkout http://gwt-dnd.googlecode.com/svn/trunk/ gwt-dnd-read-only
2. I downloaded and installed a fresh copy of the JDK 1.6.07 from the Sun site
3. used the attached file compile.antonio to compile the demo (worked)
4. used the attached file shell.antonio to run the shell mode, and it crashed
in the
same way as on the CentOS x86_64
I am attaching the shell files so you can look at them to see if I am doing
something
wrong, and the SIGSEGV generated log files from the JVM (2 files: one for the
32bit
on Ubuntu and one for the CentOS 64 bit).
The Ubuntu is running in a virtual machine with 1 CPU, but also with n
processors the
JVM crashes in the same way. My machine (the CentOS) is a 2 CPUs with 4 cores
for CPU
(Dual Xeon E5410).
-AntonioOriginal comment by antonio....@gmail.com on 1 Sep 2008 at 8:28
Attachments:
GoogleCodeExporter
commented
9 years ago Sorry. Works for me, after changing your script:
1. modify the gwt jar paths to where they are on my system
2. replacing 'java' with '$JAVA_HOME_32BIT/bin/java' (which equates to
/opt/jdk1.6.0_07/bin/java)
Here perhaps some pertinent information for my up to date Ubuntu 8.0.4 64-bit
environment:
$ $JAVA_HOME_32BIT/bin/java -version
java version "1.6.0_07"
Java(TM) SE Runtime Environment (build 1.6.0_07-b06)
Java HotSpot(TM) Server VM (build 10.0-b23, mixed mode)
$ uname -a
Linux ubuntu 2.6.24-19-generic #1 SMP Wed Aug 20 17:53:40 UTC 2008 x86_64
GNU/Linux
$ ldd $JAVA_HOME_32BIT/bin/java
linux-gate.so.1 => (0xffffe000)
libpthread.so.0 => /lib32/libpthread.so.0 (0xf7f2e000)
libjli.so => /opt/jdk1.6.0_07/bin/../jre/lib/i386/jli/libjli.so (0xf7f24000)
libdl.so.2 => /lib32/libdl.so.2 (0xf7f20000)
libc.so.6 => /lib32/libc.so.6 (0xf7dd1000)
/lib/ld-linux.so.2 (0xf7f5a000)
Original comment by fredsa on 12 Sep 2008 at 3:45
GoogleCodeExporter
commented
9 years ago Your best chances are using the hs_err*.log files to search for a similar
issue.
I do have this set in my environment (edit your ~/.profile and restart X with
ALT-CTRL-BACKSPACE):
LIBXCB_ALLOW_SLOPPY_LOCK=true
Original comment by fredsa on 12 Sep 2008 at 3:50
GoogleCodeExporter
commented
9 years ago Hello!
I finally got it working!
The problem happens when I allow the application to access your
http://allen-sauer.com/ pages. When I start the shell script to run the demo,
after a
while a dialog appears (please, look at the attached screenshot). I've always
been
clicking "yes", and after a few seconds the application crashed.
Clicking "no", makes it stay running and working!
Of course it works also black-listing the site allen-sauer from the command
line:
(so add the black list at the end of the shell.antonio file)
... com.allen_sauer.gwt.dnd.demo.DragDropDemo/DragDropDemo.html -style PRETTY
-whitelist ^http[:][/][/]google[.]com/* -blacklist
^http[:][/][/]allen-sauer[.]com/*
This way it works. But why?
Is it possible that nobody else is experiencing the same crash?
I looked for similar JVM SIGSEGV issues but the only one I found talks about
using
external code only in one thread in their application:
google for "C [libpthread.so.0+0x73b0] pthread_mutex_lock+0x20" or go to
http://dev.aol.com/forum?c=showthread&ThreadID=253&page=0
Thanks for your time,
-AntonioOriginal comment by antonio....@gmail.com on 13 Sep 2008 at 2:45
Attachments:
GoogleCodeExporter
commented
9 years ago Thanks for the update.Original comment by fredsa on 21 Sep 2008 at 3:36
GoogleCodeExporter
commented
9 years ago Perhaps this issue helps:
http://code.google.com/p/google-web-toolkit/issues/detail?id=2962
which refers to this thread:
http://groups.google.com/group/Google-Web-
Toolkit/browse_thread/thread/e0373c36acf2dad6Original comment by fredsa on 9 Oct 2008 at 4:12
Original issue reported on code.google.com by
antonio....@gmail.comon 28 Aug 2008 at 3:50