Re: CNI threads and garbage collection on FC4

[Andi Vajda <andi at osafoundation dot org>]

> When you say after the fact, after what exactly do you mean?

Sorry, I should have been clearer. You cannot create a thread on your own, the 
thread *must* be created by Java. By after the fact, I mean creating a thread 
on your own, in C for example, and then hoping to use that thread from Java.

> that includes an example of calling java from a C++ thread. It seems
> like the JvAttachCurrentThread(NULL, NULL) function serves no purpose if
> it can't be used to attach other threads to the JVM.

Agreed.

> Do you mean it only works if you call java code from the main thread,
> but not from threads created by pthread_create?

The thread must be created by Java, it cannot be created directly by you using 
pthread_create() or otherwise.

> If so, I don't need garbage collection, I'm happy to delete the objects
> manually. I just need to call
> java::io::ObjectOutputStream::writeObject() from a C++ thread. Can I
> tell the garbage collector not to run somehow?

I don't think so. As soon as Java allocates an object, the gc is involved and, 
if the thread wasn't created by it, your process will crash.

Andi..