Interfaces
Derek L Davies
ddavies at world.std.com
Mon Feb 7 11:57:21 PST 2000
Jason Baker <jbaker at cs.utah.edu> writes:
> I thought the benfit was that JNIEnv becomes a second return value:
> A jni call produces a new JNIEnv along with either the return value or
> an error condition. But vmdi is different: there is exactly one
> JVMDI_Interface_1, which you can save a pointer to.
I understand that JNIEnv interface pointers are potentially different
for each thread and that JVMDI_Interface_1 interface pointers are,
like JavaVM interface pointers, the same for every thread of a given VM
instance. But, JavaMV interfaces functions also take a JavaVM* as
their first args even though the JavaVM interfaces pointer is the same
for every thread. This inconsistancy is what's confusing me ;-)
> >
> > It seems like the "codeguru" example is broken to me. Does anyone
> > know if this is a legal example? I don't have sun's implementation
> > and am going to great lengths to avoid getting it. I don't want to
> > look at any of their code, including their implementation of
> > "jvmdi.h". Does anyone have an example of calling a JVMDI function
> > that works with the sun code?
>
> Yes.
I'm not sure which question you're answering ;-)
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