This is a debian suggesting strace to be the one for me. Can I attach
strace to my .so-file or do I have to start tomcat via strace?
-- .so.s don't have independent existence. You run strace on a process.
I recommend using the -p option to attach it to the JVM after the JVM is
up but before you try to touch your code.
> 2) Generally, you can get some clues on UnsatisfiedLinkError, in a
> pinch, by using LD_DEBUG or strace (or truss or whatever).
If I'm not misstaken tomcat ignores environment variables so how can I
set LD_DEBUG?
-- Tomcat can't 'ignore' LD_ environment variables. They control how
ld.so loads the JVM into the process address space and links it. You put
env settings in bin/setenv.sh. You will need such a setting for
LD_LIBRARY_PATH, at least.
> A) Any .so has to be in java.library.path and in LD_LIBRARY_PATH. Any
> dependencies of the .so (visible with 'ldd', likewise).
java.library.path _AND_ LD_LIBRARY_PATH? Thats intersting and might very
well be the solution to my problem. As I just wrote I think tomcat
ignores these evironment variabels. I was under the impression that
LD_LIBRARY_PATH was the same as java.library.path, if that is not the
case then how do I set LD_LIBRARY_PATH?
-- you set the environment variable in bin/setenv.sh or the equivalent.
You also set java.library.path there, generally.
> Thus, I always put native classes in the 'common' classloader by
> adding the jars to common.loader in catalina.properties.
Is it also OK to add .so-files? I have
grant codeBase "file:${catalina.home}/common/-" {
permission java.security.AllPermission; };
in my catalina.properties. Would that suggest that if I only placed all
.so-files under /common they would be loaded or at least accessable?
-- you can never 'add a .so' to a classpath. You add the Java class with
the 'native' methods, and when it calls System.loadLibrary, the fun
begins. The jar containing the native-method classes is the important
one.
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
