RFR: 8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true, oopDesc*, MarkAndPushClosure>
stefan.johansson at oracle.com
Thu Nov 12 08:47:27 UTC 2015
On 2015-11-12 01:23, Kim Barrett wrote:
> On Nov 11, 2015, at 10:41 AM, Stefan Johansson <stefan.johansson at oracle.com> wrote:
>> Please review this fix for:
> Good find!
> The added guarantee in RegisterHumongousWithInCSetFastTestClosure::doHeapRegion looks like leftover debugging code.
Thanks for looking at this Kim,
It is from the debugging, but it was left on purpose. This guarantee
will help us catch the case where we iterated the old version of the
SparsePRT and not the expanded one, because the iterator uses
SparsePRT->_cur to iterate while occupied uses SparsePRT->_next. I could
update the message to say:
"Remembered set hash maps out of sync, cur: " SIZE_FORMAT " entries,
next: " SIZE_FORMAT " entries"
I think this is more informative and I prefer to leave the guarantee in.
> Tom already pointed out typo in added comment.
> Otherwise, looks good. I don’t need another webrev.
Thanks for reviewing,
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