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An Error in loading .dll  RSS feed

 
krish rajini
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Posts: 25
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I have a webapp running under Tomcat 3.2.1 that needs to make JNI calls in
order to access data and methods in legacy C++ code. A servlet is loaded
>on
startup of the webapp that, as part if its init method, causes a data set
specific to that webapp instance to be loaded into the C++ data
structures.
This Java code for this servlet contains the following:

static
{
try {
System.loadLibrary("JCoreImpl");
System.out.println("JCoreImpl loaded");
m_bLibraryLoaded = true;
} catch (UnsatisfiedLinkError e) {
m_bLibraryLoaded = false;
System.out.println("JCoreImpl NOT loaded " + e);
}
}

Things work fine if there is only one webapp (let's call it
"webapps/aaa").
If I have a second webapp ("webapps/bbb") that is identical to webapps/aaa
except for the data set used in the C++ data structures, then webapps/aaa
starts up just fine, but when webapps/bbb is started I get an error
stating
that:

JCoreImpl NOT loaded java.lang.UnsatisfiedLinkError: Native Library
E:\WebStation\binDebug\JCoreImpl.dll already loaded in another classloader

I need to have a separate instance of the native library for each of my
webapps as each instance needs to contain data that is unique to that
particular webapp. I have searched through the mail archives and read
emails by Craig McLanahan explaining the classloader hierarchy. But I
have
not been able to find anything specific to loading a unique instance of a
native library for each webapp.

Any ideas? Thanks,

krishna

 
ujjwal soni
Ranch Hand
Posts: 405
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Repeated post

http://www.coderanch.com/t/450866/Other-JSE-JEE-APIs/java/dll-already-loaded-another-class
 
Don't get me started about those stupid light bulbs.
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