jni interface

[karthik venkatesh]

hi ,
i tried to add meaningOfLife actor in ptolemy.
$created meaningOfLife.c containing double meaningOfLife(){
return 42.0;
}
$created meaningOfLife.h containing extern "c" double meaningOfLife();
$gcc -shared -o meaningOfLife.dll meaningOfLife.c
$export CLASSPATH=c:/Ptolemy/ptII4.0.1
$cd Ptolemy/ptII4.0.1/bin
$ ./vergil -jni
I have configured the output parameters etc.
after following all these steps i run the model which i have created.
it gives an exception as following.
ptolemy.kernel.util.IllegalActionException: Could not load JNI C class 
'jni.meaningOfLife.JnimeaningOfLifeImeaningOfLife' relative to 
file:/C:/Ptolemy/ptII4.0.1/bin/
 in .mymodel.meaningOfLifeImeaningOfLife
Because:
jni.meaningOfLife.JnimeaningOfLifeImeaningOfLife

        at jni.GenericJNIActor.initialize(GenericJNIActor.java:658)
        at ptolemy.actor.Director.initialize(Director.java:440)
        at ptolemy.actor.Director.initialize(Director.java:419)
        at 
ptolemy.domains.sdf.kernel.SDFDirector.initialize(SDFDirector.java:253)
        at ptolemy.actor.CompositeActor.initialize(CompositeActor.java:470)
        at ptolemy.actor.Manager.initialize(Manager.java:442)
        at ptolemy.actor.Manager.execute(Manager.java:289)
        at ptolemy.actor.Manager.run(Manager.java:852)
        at ptolemy.actor.Manager$2.run(Manager.java:901)
Caused by: java.lang.ClassNotFoundException: 
jni.meaningOfLife.JnimeaningOfLifeImeaningOfLife

        at java.net.URLClassLoader$1.run(URLClassLoader.java:199)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
        at jni.GenericJNIActor.initialize(GenericJNIActor.java:656)
        ... 8 more
Caused by: java.lang.ClassNotFoundException: 
jni.meaningOfLife.JnimeaningOfLifeImeaningOfLife

        at java.net.URLClassLoader$1.run(URLClassLoader.java:199)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
        at jni.GenericJNIActor.initialize(GenericJNIActor.java:656)
        at ptolemy.actor.Director.initialize(Director.java:440)
        at ptolemy.actor.Director.initialize(Director.java:419)
        at 
ptolemy.domains.sdf.kernel.SDFDirector.initialize(SDFDirector.java:253)
        at ptolemy.actor.CompositeActor.initialize(CompositeActor.java:470)
        at ptolemy.actor.Manager.initialize(Manager.java:442)
        at ptolemy.actor.Manager.execute(Manager.java:289)
        at ptolemy.actor.Manager.run(Manager.java:852)
        at ptolemy.actor.Manager$2.run(Manager.java:901)
what may be the problem?
help me.
with luv,
karthik venkatesh.
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