DLL jni Java6 update 1

[Robert Fraser]

Christoph wrote:
> Hi All!
> 
> Ich have a problem with jni and Java6 update 1. 
> I have follwing files
> 
> my.dll  (DMD, bud)
> myjni.dll (SWIGm, dmc or bcc32) references my.dll
> 
> When I am using Java5 everthing runs fine.
> Ich I use Java6 I get an access violation and the end of the app, I think when it happens when java is unloding the dll. I tested it with a plain dll without gc and any other D function:
> 
> --DLL
> 
> import std.c.windows.windows;
> HINSTANCE g_hInst;
> 
> extern(C) export int getX() {
>         return 1;
> }
> 
> 
> extern (Windows) 
>     BOOL DllMain(HINSTANCE hInstance, ULONG ulReason, LPVOID pvReserved) {
>    switch (ulReason) {
> 	    case DLL_THREAD_ATTACH:
> 	    case DLL_THREAD_DETACH:
> 	        return false;
>     }
>     g_hInst=hInstance;
>     return true;
>    
> }
> 
> If I use a c++ dll created with bcc32/dmc everthing  runs fine with Java6.
> 
> thank you for helping 
> christoph

Hi Christoph,

Sorry I can't help you with your problem directly. However, if you plan 
to use D's garbage collection, be warned that D and Java's garbage 
collectors don't get along (since they use the same signals). If you 
need the GC, IPC is a better solution (check 
http://www.dsource.org/projects/dbus-d/ ). Frank Benoit probably knows 
more about that than I do.

If you don't need D's GC, then JNI is a perfect solution, but I'm not 
sure exactly what your problem is.

Sorry I couldn't be more helpful,
Robert