Re: Interface gcj-compiled library with Java programs in a runtime (other than gij)?

Thank you. I think I may have missed a keyword here: CNI. I avoid using 
JNI for performance degradation.

The detailed scenario is like:
There are two parts of code.

-SomeJavaCode.java: containing a method call to NativeJavaLib.a().
This part of code remains in bytecode

-NativeJavaLib.java: declaring 'native void a()'
-NativeJavaLib.cpp: implementing a() via CNI
This part is compiled to libJavaLib.so

Now SomeJavaCode can be executed correctly with 'gij' interpreter; I 
think there is no JNI involved. But it cannot run on HotSpot or other 
VM. If I have to use JNI to do this, then the approach is much less 
attractive.

Thanks,
Yi

On 13/02/12 15:00 , Brian Jones wrote:
> I suggest you try jni to get to whatever native code you are interested in.
>
> Brian
>
> On Feb 12, 2012, at 10:01 PM, Yi Lin<[EMAIL PROTECTED]>  wrote:
>
> > Hi,
> >
> > I am wondering if we can use methods from a gcj-compiled library in uncompiled 
> > Java program(bytecode) executed on a VM.
> >
> > According to gcj FAQ 1.7, there is no problem to do this with 'gij' 
> > interpreter/runtime. You can compile some Java code into library (native code), 
> > and run bytecode with 'gij' to invoke library methods. But this seems only 
> > capable for 'gij', and other runtimes like HotSpot cannot load and link the 
> > library properly.
> >
> > I want to know if there is a general solution to allow you interface uncompiled 
> > Java program with gcj-compiled library. Any information or reference about this 
> > will be appreciated.
> >
> > Many Thanks,
> > Yi