Q> To: Quan, William [NGC:B866:EXCH]
WQ> Cc: '[EMAIL PROTECTED]'
WQ> Subject: Re: Linux JVM: JNI allow putmsg() syscalls in native code?
WQ> William Quan <[EMAIL PROTECTED]> writes:
>> Q1.) Why is the JVM eclipsing my getmsg() and putmsg() syscalls with
&
Title: RE: Linux JVM: JNI allow putmsg() syscalls in native code?
The LD_PRELOAD is working out after all. I set this *inside* of my '.java_wrapper'
instead of on the command line. This prevents the process from hanging like before.
LD_DEBUG=symbols,binding reveals the
William Quan <[EMAIL PROTECTED]> writes:
> However, when I attempt to do the command:
> 'LD_PRELOAD=/usr/lib/libLiS.so ... java' The process hangs(long
> pause and no sign of completion in sight)- so i kill the process.
> Q3.)Any ideas as to what might be the cause for this hangup using
> LD_PRE
Title: RE: Linux JVM: JNI allow putmsg() syscalls in native code?
Juergen,
Thanks for your help.
The LD_DEBUG shows the following:
31212: symbol=putpmsg; lookup in file=/lib/libc.so.6
31212: binding file /home/imslab/jets1000dev/dlpi/libdlpi.so to /lib/libc.so.6: symbol
William Quan <[EMAIL PROTECTED]> writes:
> Q1.) Why is the JVM eclipsing my getmsg() and putmsg() syscalls with
> this from libc?
This not Java specific, you'll get the same problem when dlopening a
library which is linked against libLiS.so. The first getmsg which
gets found is from libc.
If yo
Title: Linux JVM: JNI allow putmsg() syscalls in native code?
GIVEN:
--
I am working on a Java Network Application that can send/receive raw Ethernet packets.
I bypass the TCP/IP stack and pass them to a DLPI provider. Currently, I am attempting
to use LiS-2.12 (a.k.a LINUX STREAMS: http
tees about whether certain C++
language
features, like C++ exceptions and RTTI, are valid in the context of
native
code. These C++ language features typically require all modules in the
system to be
compiled with the features enabled, and typically require run-time
support.
In this case there is l
Hello all-
I am working on an application that uses the JNI to talk between
native code written in C++ and Java. When native code called through
the JNI throws an exception, the stack will be unwound past a valid catch
statement, resulting in a call to __default_terminate() and finally
ANNOUNCEMENT
This is to announce the availability of Profiler, a JDK1.2 profiler that
reports how much time is being spent in native code.
Under the covers, Java is always running native code: the JVM, native
libraries, JIT-compiled code. Profiler allows you to see where the time
is really
is meant to be
compiled with the -g option.
As I suggested before, you can insert a dummy native method in your code
which traps the debugger. Calling this method forces the native code to
be loaded, returns you to the gdb prompt, and voila! You can set breakpoints.
You can also use the gdb &#
x27;s JDK for Linux, if that
matters)
This causes the GNU debugger to start, and places me at the command
line. Now...I think I'm very close. I want to set a break point in native
code. The problem is, the native code hasn't been loaded yet because we
haven't run the Java class wh
> Matt Welsh writes:
Matt> Under Linux, try using gdb and running the 'debug' version
Matt> of the JVM (e.g., 'java_g' rather than 'java').
Matt> My .gdbinit has the following:
Matt> set env THREADS_TYPE=green_threads
Matt> set env JAVA_HOME /home/cs/mdw/src/java/dow
v3/bin/i686/green_threads/java_g
This should allow you to say, e.g.,
(gdb) run MyClass
You can also set breakpoints and so forth in your native code, probably by
specifying source lines or function names before you run the JVM. Otherwise
you could have a native method which has one
ode works fine when I run it normally (ie. outside jdb).
Suggestions? I feel like I'm really close and its bugging me :-)
Oh to see into that little black box of native code...
Christian
Christian Cryder
Software Engineer - UHR Infrastructure
At 12:50 PM +0100 04/13/99, Urs Wagner wrote:
>Sorry
>
>I mean native code Java application.
try the gcj thing form cygnus. http://sourceware.cygnus.com/java/
It's a Java front end to egcs.
>Wait I'm confused. Isn't JFC just Swing? Why isn't that "native Ja
The only solution that I found the is plausable today is
to use ibms native code compiler.
You have to purchase visualage for java enterprise edition.
I was using it under the beta versions of it with swing 1.1.
It works very well and it speeds up swing significantly.
Edgar Villanueva
PCS
Sorry
I mean native code Java application.
Wait I'm confused. Isn't JFC just Swing? Why isn't that "native Java"?
Thanks in advanced,
-Riyad
-Original Message-
From: Urs Wagner <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Look in $(JDK_HOME)/include/genunix/
[EMAIL PROTECTED] on 03/06/99 07:46:01 AM
To: [EMAIL PROTECTED]
cc:(bcc: Russell Pridemore/Lex/Lexmark)
Subject: NATIVE CODE
Dear sir,
I use linux OS.
I want to include a "C" function for writing into sound card in a
real-time a
Dear sir,
I use linux OS.
I want to include a "C" function for writing into sound card in a
real-time application using the "JNI".
I wrote the "C" function and created the corresponding header files. When
I try to compile the "C" file, it gives an error message saying that the
header file "jn
Hi!
The following problem exists in both JDK 1.1.6v5, and 1.1.7v1a. I've got a
glibc systems, and using the glibc versions of the JDK. My kernel is 2.0.34.
I'm pretty sure this is Linux specific, but I haven't been able to verify that
by trying it on another OS. But here goes.
Under certain cir
Bernd Kreimeier writes:
> JDK seems to fail me. The very same classpath
> that works to load the main Java class (import/javac)
> does not work when I call env->FindClass in the
> native code.
Mistake on my account. I ended up trying
"somepackage.SomeClass"
Please submit a full bug report to the
http://www.blackdown.org/java-linux.html jitterbug Bug Database including
the simplest sample code that shows the problem (both java and c) and we
(the porters) would be happy to look into it for you.
The simpler the code the better.
By the way, I am not su
Bernd Kreimeier wrote:
> ... The very same classpath
> that works to load the main Java class (import/javac)
> does not work when I call env->FindClass in the
> native code. The same source works with Japhar
> (unfortunately, Japhar has other problems).
>
> The error appe
classes used only in native code.
>
> Again, JDK seems to fail me. The very same classpath
> that works to load the main Java class (import/javac)
> does not work when I call env->FindClass in the
> native code. The same source works with Japhar
> (unfortunately, Japhar has othe
Invocation API, I now use
the JNIEnv* provided by JNI in Main() and use that
environment to let my native code set up various
other stuff. E.g. a native "init()" loads a couple
of other classes used only in native code.
Again, JDK seems to fail me. The very same classpath
that works to loa
hi, I'm Takeru Tamayama , keio univ in Japan.
I looked www.blackdown.org "Compiling Library Code for JNI".
I did the same way writing there, but my program don't work.
error message is following. I want some hints.
# message
SIGSEGV11* segmentation violation
stachbase=0xb820, s
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