Java JNI library load tracing

[Rohitash]

Hi,
I would like to know if its possible to trace the native library
loading ( including dependent library loads ) using Dtrace .

I'm somehow seeing a SIGBUS while I am trying to load my native
libraries , which used to work in a 32 bit Java environment . Now I am
trying to use 64-bit Java ( Java 6 ) and thats where I am hitting on the
problem . I think Java 6 has Dtrace support built in , and I did check
the documentation , but I could just find about tracing the class loads .

Appreciate if you could share your comments.

Thanks.

[Mike Gerdts]

Hi,
 I would like to know if its possible to trace the native library loading (
including dependent library loads ) using Dtrace .
I'm somehow seeing a SIGBUS while I am trying to load my native libraries ,
which used to work in a 32 bit Java environment . Now I am trying to use
64-bit Java ( Java 6 ) and thats where I am hitting on the problem . I think
Java 6 has Dtrace support built in , and I did check the documentation , but
I could just find about tracing the class loads .
Appreciate if you could share your comments.

Have you recompiled your native code into 64-bit? If not, that is the
first step. You can tell whether it is 32-bit or 64-bit with "file
/path/to/libwhatever.so".

[James Litchfield]

You should be able to just do this with normal DTrace.The Java DTrace
support is for things
such as better support for looking at garbage collection and other things.
I assume that you've verified that your library had all dependencies
resolved via ldd?
Does truss show anything useful?

Jim
----

Post by Rohitash
Hi,
I would like to know if its possible to trace the native library
loading ( including dependent library loads ) using Dtrace .
I'm somehow seeing a SIGBUS while I am trying to load my native
libraries , which used to work in a 32 bit Java environment . Now I am
trying to use 64-bit Java ( Java 6 ) and thats where I am hitting on
the problem . I think Java 6 has Dtrace support built in , and I did
check the documentation , but I could just find about tracing the
class loads .
Appreciate if you could share your comments.
Thanks.
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