[ptp-dev] JNI Sample

[Nathan DeBardeleben <ndebard@xxxxxxxx>]

I just committed a sample JNI implementation for a portion of what I'm 
writing to interface with the OMPI open runtime engine/environment (no 
one really knows what the E stands for :) ).
JNI is so screwed up in Eclipse it's unreal.  I added a HOWTO_PTP_JNI 
text file which explains how to generate the .h and .c files (which I 
committed) as well as how to build the .jnilib (OSX specific, will fix 
this later).  Right now it requires a few commands being run on the 
command line and then a change to the Run.. bit in Eclipse to point it 
at the new .jnilib.

I havn't added a Makefile for this yet because, frankly, I'm not 
confident in mixing Java and C in the same project (I was able to just 
drop it in there, but in the past when I've added Makefiles to a Java 
project is bombs nonstop).

If someone has some magic for making this JNI transparent (in so far as 
compiling and creating the JNIlib) please offer it up or change up the 
source to make this non-hacky.  I've spoken with a few mailing lists 
that use JNI and they claim there's no way to do it in Eclipse, that 
what I'm doing is the only way.  <sigh>  Gogo INTEGRATED development 
environment.

The JNI code in there is nothing but a helloworld but I have more 'real' 
JNI code that's 80% working, I just wanted to commit something that 
could hopefully stir an understanding for how to get JNI smoothly 
working inside of Eclipse.

--
-- Nathan
Correspondence
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Nathan DeBardeleben, Ph.D.
Los Alamos National Laboratory
Parallel Tools Team
High Performance Computing Environments
phone: 505-667-3428
email: ndebard@xxxxxxxx
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