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Message:
JNI loading an executable
Posted by bjoern on September 14, 2001 at 4:54 AM
i wrote a c++ prog, that invokes the jvm. than i started a java class.methode which is a native methode. (before i loaded the exe, which invokes the vm into the vm, so the funktion-name-mapping can work) c++ code
{
...; jvm->load();...
jniEnv->CallStaticMethod(..go_IDs..);
}
extern "C"
{
void Java_ClassName_funktionName(JNIEnv*,jclass)
{
printf("in the native code");
}
} /////////////////
java-code static native void funktionName(); static void go()
{
System.load("PathToEXE");
funktionName();
} ///////////////////////////////// thats all
it works fine if i make the invoking from c++.
if i try to start the methode go() from the java-main() the call
to the native methode works fine, but the printf() is not executed. the java-vm exit with code 128. it dont even throws an exception. and i dont know what's the problem. if i dont printf, but return it also works, i can also call other funktions-methods from the exe, but not anything else.
is it impossible to link an *.exe to the vm? are the other dependent dlls (for printf()) not loaded, who can help
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