Why does this program cause an NPE in LibgcjInternalFinalizerThread ??

Wed Aug 20 19:48:00 GMT 2003

On 2003年8月20日, David Daney wrote:
> It seems that it is possible for a thread to be inside of
> natReference.cc holding the Reference's lock when the garbage collector
> stops the thread. If this were to happen, the garbage collector would
> block forever waiting to obtain the lock when it entered.
>> Is this possible?

It shouldn't be possible. You're confusing stop-world GC with
finalization; they occur separately. Finalization is always done
asynchronously in a thread dedicated to it.
Jeff