Calling java code from C/C++ code.

Timothy Wall twall@oculustech.com
Mon Mar 5 13:49:00 GMT 2001


This is linux x86, RedHat 7.0, using gcc 3.0 branch from CVS, and binutils
from the distribution. The java code is very simple:
public class test {
 public static void execute() {
 main(new String[0]);
 }
 public static void main(String[] args) {
 System.out.println("Hello, world");
 System.exit(0);
 }
}
I believe dlopen loads the gc, using LD_LIBRARY_PATH to find it. I have no
idea how that affects the weak references.
Tim
"Boehm, Hans" wrote:
> > -----Original Message-----
> > From: Timothy Wall [ mailto:twall@oculustech.com ]
> > (gdb) p GC_dump()
> > ***Static roots:
> > From 0x0 to 0x804a1d8
> >
> ...
> There's the problem. The collector thinks that static data for the main
> program starts at location 0, and hence it's trying to scan memory from 0x0
> to 0x804a1d8. Most of that isn't mapped.
>> I assume your gcj installation works with a simple 100% Java program? This
> is Linux/X86? Which distribution?
>> Does the garbage collector itself get loaded with a dlopen? Does that
> affect processing of the weak references to __data_start and data_start?
>> Hans



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