Support for logging on unix like systems from the console.

[SvenKirschbaum]

I would like to see this

[kwhat]

ill see what I can compile.

[kwhat]

Ok, so what arm arch are you trying to run on? v6, v7? Hardfloat? Raspberry Pi?

[SvenKirschbaum]

It´s an Raspberry Pi

root@raspberrypi ~ # uname -a
Linux raspberrypi 3.12.22+ #691 PREEMPT Wed Jun 18 18:29:58 BST 2014 armv6l GNU/Linux

[kwhat]

Can you grab the following two java properties from your jvm:

System.getProperty("os.name");
System.getProperty("os.arch");

[SvenKirschbaum]

root@raspberrypi ~ # java test
Linux
arm

[kwhat]

Well that makes things really interesting. I need a way to tell what version of the arm processor I am dealing with from Java. Is this the openjdk or oracle? I was hoping os.arch would be closer to armv6 or armv6j. Does os.version, java.vendor or java.version have anything arch identifying? Also how much do you know about compiling for arm? I am interested in how the oracle jrm is arm v6/v7, does -
march=armv6j support both?

[kwhat]

I think I may have a solution, it may take a day or two.

[kwhat]

Try this binary out: https://drive.google.com/file/d/0BzIKwDqIyYGkVEt1a3RZTUtoakE/edit?usp=sharing

Its untested but it will hopefully work with armv6j. Sorry about google drive, but apparently I cant attach binary files to github bugs.

[kwhat]

Were you able to test the attached zip?

[reinaldo-rda]

I tested the attached file but returned the error, you can check please?

Error:
A fatal error has been detected by the Java Runtime Environment:
SIGSEGV (0xb) at pc=0xa8c3097c, pid=2647, tid=3058250864
JRE version: Java(TM) SE Runtime Environment (7.0_40-b43) (build 1.7.0_40-b43)
Java VM: Java HotSpot(TM) Client VM (24.0-b56 mixed mode linux-arm )
Problematic frame:
C [libX11.so.6+0x7f97c] XkbGetAutoRepeatRate+0x8
Core dump written. Default location: /home/pi/PIBalanca/core or core.2647
If you would like to submit a bug report, please visit:
http://bugreport.sun.com/bugreport/crash.jsp
The crash happened outside the Java Virtual Machine in native code.
See problematic frame for where to report the bug.

[kwhat]

Hmm, I tested last night and it seemed to run fine for me on RASPBIAN Wheezy. What arm chip are you using? Are you able to compile from source? Do you have the complete dump available?

[reinaldo-rda]

I tried starting the code does not compile, but I can try, just do not have much experience in native code, you can pass me the commands to compile?

dump:
https://drive.google.com/file/d/0B9twwkwCwI6GekVDTWRwbDFwLWc/edit?usp=sharing

Chip:
/proc/cpuinfo:
processor : 0
model name : ARMv6-compatible processor rev 7 (v6l)
Features : swp half thumb fastmult vfp edsp java tls
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xb76
CPU revision : 7

[kwhat]

Depending on your distribution you will probably need -dev packages for libXt libX11 libXtst. You wil also need autotools, autoreconf, and ant. You can build a working jar with ant compile jar from the project root.

Does the jar produce any console output? The problematic line is likely: https://github.com/kwhat/libuiohook/blob/f1f2de864c9d5ae55e40fb273b90cf960ddf6d16/src/x11/system_properties.c#L54 I am wondering if XOpenDisplay failed?

[reinaldo-rda]

console output:

JNativeHook: Global keyboard and mouse hooking for Java.
Copyright (C) 2006-2014 Alexander Barker. All Rights Received.
https://github.com/kwhat/jnativehook/

JNativeHook is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

JNativeHook is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see http://www.gnu.org/licenses/.

• A fatal error has been detected by the Java Runtime Environment:
  *
• SIGSEGV (0xb) at pc=0xa896b97c, pid=3992, tid=3058087024

• JRE version: Java(TM) SE Runtime Environment (7.0_40-b43) (build 1.7.0_40-b43)
• Java VM: Java HotSpot(TM) Client VM (24.0-b56 mixed mode linux-arm )
• Problematic frame:
• C [libX11.so.6+0x7f97c] XkbGetAutoRepeatRate+0x8
  *
• Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
  *
• An error report file with more information is saved as:
• /home/pi/PIBalanca/hs_err_pid3992.log
  *
• If you would like to submit a bug report, please visit:
• http://bugreport.sun.com/bugreport/crash.jsp

[reinaldo-rda]

I'm not working with desktop, only via console, can it be the cause of XOpenDisplay failed?

[kwhat]

oh yes! It requires and active X11 session to function, although there should be a check(s) for XOpenDisplay failures to avoid segfaults. I would probably need to use the kernel event interface or evdev. I am not sure what kind of permission workaround are going to be needed. Some more info: https://kernel.googlesource.com/pub/scm/linux/kernel/git/legion/kbd/+/2.0.2/src/dumpkeys.c
https://www.kernel.org/doc/Documentation/input/input.txt
http://www.osdever.net/bkerndev/Docs/keyboard.htm
http://www.freedesktop.org/software/libevdev/doc/latest/

I will fix the issue with the XOpenDisplay segfaults, but its going to be a while before I can even take a look at supporting console input. Your free to hack around on your own. Any amount of information gathering helps.

[kwhat]

Hey, So I stumbled on this project while digging around on github: https://github.com/xoeye/evdev-java/compare/progman32:master...master

It should do close to what you need until I can integrate full evdev support.

[reinaldo-rda]

Thanks for the help, I tried to use but returned the error below, know how to solve?

EventDevice: System: arm
EventDevice: libPath: /NATIVE/arm/libevdev-java.so
EventDevice: in: sun.net.www.protocol.jar.JarURLConnection$JarURLInputStream@147e0ec

. A fatal error has been detected by the Java Runtime Environment:
.
. SIGILL (0x4) at pc=0xb42cb640, pid=3068, tid=3058209904
.
. JRE version: Java(TM) SE Runtime Environment (7.0_40-b43) (build 1.7.0_40-b43)
. Java VM: Java HotSpot(TM) Client VM (24.0-b56 mixed mode linux-arm )
. Problematic frame:
. C [libevdev-java6629126383018815710.so+0x640] call_gmon_start+0x7
.
. Core dump written. Default location: /home/pi/c/evdev/core or core.3068
.
. An error report file with more information is saved as:
. /home/pi/c/evdev/hs_err_pid3068.log

Detail:
https://drive.google.com/file/d/0B9twwkwCwI6GaFBzQXlzcGg3WFE/edit?usp=sharing

[kwhat]

My best guess, the binary you are using, the one packaged with the repo, was compiled with gprof support but your system doesn't have some dependency it needs. Try recompile the binary src without the -pg flag.

[kwhat]

This should be working at this point, please open a new bug if it is still an issue.