RFR: Adaptive thresholds for Traversal

[Aleksey Shipilev]

On 06/25/2018 12:33 PM, Roman Kennke wrote:
> Am 25.06.2018 um 12:11 schrieb Aleksey Shipilev:
>> On 06/25/2018 11:53 AM, Roman Kennke wrote:
>>> This 'adopts' (i.e. mostly copy+pastes) the adaptive thresholds stuff
>>> from adaptive heuristics to be used in Traversal GC. Not sure if it
>>> should somehow be factored to be shared.
>>>
>>> http://cr.openjdk.java.net/~rkennke/traversal-adaptive-thresholds/webrev.00/
>>
>> Looks OK for now.
>>
>> This assert is new:
>>   167   assert(!heap->has_forwarded_objects(), "no forwarded objects here");
>>
>> ...we used to return NONE when forwarded objects are in heap. I assume that never happens outside of
>> traversal cycle.
>>
> 
> Yeah I was wondering why we care for this situation that should never
> actually happen. It's probably a leftover from back when we mixed
> traversal/partial with conc-mark. The assert hasn't triggered in
> testing, so I guess it's ok.

Yup, looks like it.

-Aleksey