Launching JVM from C++ side (Sun/gcc)

Hello,
(excuse me for the language, i'm french...)
I try to write a simple C++ program which launch the JVM on Sun Solaris with gcc 2.95.3, but i have many problems when i compile it. Can any one could give me a good Makefile. Mine is something like :
gcc -I/usr/java/include -I/usr/java/include/solaris -L/usr/java/jre/lib/sparc -c invoke.cpp
gcc -I/usr/java/include -I/usr/java/include/solaris -L/usr/java/jre/lib/sparc -ljava -ljvm -o invoke invoke.o
and gcc tell me :
Undefined first referenced
symbol in file
ostream::operator<<(ostream &(*)(ostream &))invoke.o
endl(ostream &) invoke.o
cerr invoke.o
ostream::operator<<(char const *) invoke.o
ld: fatal: Symbol referencing errors. No output written to invoke
collect2: ld returned 1 exit status
thanks !

How stupid I was ! I was looking at my posts and I found this one...
I used 'gcc' to compile C++ sources: yeah! I think it would be better to use g++ or CC! (shame on me)

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Launching jvm in solaris from java...

I have a problem launching jvm from java in solaris...
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Message was edited by:
chaos_begins_here

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Launching a 64 bit jvm from a 32 bit jvm

I want to launch a 64 bit jvm from a 32 bit jvm. The current application works like this
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2) User can specify his/her own libraries that are to be passed to B (child jvm). These entries are prepended to the inherited entries (A.LD_LIBRARY_PATH).
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we do
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Here if the user specifies new libraries for 64 bit jvm, how will they interact/interfere with the 32bit libs.
3) What about native(esp jni) libraries?
Bigger picture :
If A is running sun java jdk1.5_a (32bit) and user can specify B as
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jschell wrote:
Questions :
1) Would simply changing the java for the child suffice? That is instead of
java -classpath=<inherited-entries:specified-entries> abc
we do
-user-specified-java -classpath=<inherited-entries:specified-entries> abc
You cannot do it without creating a new process.
ProcessBuilder/Runtime.exec() create a new process. The new process can do anything.
You can set the environment using either.
Yes. The process B will be spawned either using ProcessBuilder or using Runtime. The question still remains,
Q: If I have a classpath defined already for a particular java implementation and the LD_LIBRARY path is all set, what will be effect of changing the default java.
Example :
If my classpath and LD_LIBRARY_PATH is set to use/work-with /usr/lib/javaA/ then
"/usr/lib/javaA/jre/bin/java -classpath $classpath abc" will work smoothly
But what will happen if I do classpath=$classpath:$new-javaB-classpath-entries and LD_LIBRARY_PATH=$LD_LIBRARY_PATH_FOR_B:$LD_LIBRARY_PATH and
"/usr/lib/javaB/jre/bin/java -classpath $classpath abc"
>
2) How will the classpath entries and libraries interact/interfere with the newly spawned jvm?
Here if the user specifies new libraries for 64 bit jvm, how will they interact/interfere with the 32bit libs.
3) What about native(esp jni) libraries?
New process = new environment.
If there is a problem it is because of how you set it up or how they are used in the first place.I am more interested in the if. My question is can it happen and if yes whats the explanation and how to solve it.
>
As an example if an app needs a 64 bit library and there is only a 32 bit library then what happens depends entirely on the app that needs the 64 bit library. That question would be the same if you attempted to run the application from a console window.So here is another way of looking at it. Imagine you want to kick off a 64 bit java app from your console. Assume that you can only prepend to classpath. Also you can append to LD path. Now you have provided all that is needed for the app to run. But under the classpath constraints, what will be the behaviour?

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h.put(Context.INITIAL_CONTEXT_FACTORY," ********what should i use here???????*************************")
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private static String url="http://localhost:4848
Since the client is in a different machine the localhost is not going to work here. provide the url or the machine name of the system in which ur sunapp server is running. In addition u will need to have the stubs of the remote interfaces in ur client machine.

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jdouble JNICALL Java_provided_Environment_altitude(JNIEnv*      env,
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080aa94c t _GLOBAL__I_Java_provided_Environment_altitude
080aa6e4 T Java_provided_Environment_altitude
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Have a look at http://www.xraylith.wisc.edu/~khan/software/gnu-win32/. It has examples of how to use gcc, java JNI on cygwin and should work on all versions of Windows. It has the command line options for using dlltool.

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Edited by: veda_sishta on ? ?????, ???? ??:?? ???????
Edited by: veda_sishta on ? ?????, ???? ??:?? ???????

To post code, use the code tags -- [code]Your Code[/code] will display asYour CodeOr use the code button above the editing area and paste your code between the {code}{code} tags it generates.
And make up your mind what file type you're having a problem with. Maybe .asx doesn't have a file association on your computer.
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edit Did you try searching the net for the error you got? ("Invalid menu handle")
Edited by: Darryl.Burke

Option -splash and -Xmx result in "Unable to launch JVM" error

Hello everybody,
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910396 wrote:
This happens only on particular customer systems (servers as well as desktop machines) Red flag: it is not consistent, in other words it is system dependent. It is already hard for you to diagnose such an occurrence, I wouldn't expect anything more by asking in a forum. At least you have SOME way of doing some more diagnosing.
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Hi,
Without some more details of the configuration, its difficult to know
what's happening here. For example, what do you mean by client side
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If you always run the application on the database server system, but can't
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Simon
null

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I already did PATH.
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Explicitly set PATH to point ONLY to the appropriate java directory (where the dll is and executable) using something like the following
set PATH=C:\xxx\yyy
Then run your app again in the console window - no where else.

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Hello Experts,
we are creating webservice data control to invoke bpel process from ADF side.
When I run the application and inovoke the bpel every thing is working fine.
But when we are changeing the instances from DEV to SIT the bpel url(hostname and port) will change.
So we just edited DataControls.dcx file and we just replaced the wsdl url and trying to run the applicaiton.
This time the applicaiton is not invoking the bpel process.
If I remove the webservice data control and recreate it with new WSDL url then it is working fine.
Can any one tell us what the exact issue is. Is there any other files do i need to modify or etc.
Thanks & Regards
Gayaz

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Get error message when trying to launch bridge from CC 64 bit.

Get error message when trying to launch Bridge from Photoshop CC 64 bit. "Cannot complete command because extension cannot be loaded." Need fix. Thanks.

Hi Adobe Bubba,
Please uninstall the software, run the cleaner tool, restart your machine and install again.
Cleaner tool: http://www.adobe.com/support/contact/cscleanertool.html .
Regards,
Romt Sinha

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