RFR: Add task termination and enhanced task queue state tracking

[Aleksey Shipilev]

On 07/16/2018 03:53 PM, Zhengyu Gu wrote:
> 
> 
> On 07/16/2018 05:24 AM, Aleksey Shipilev wrote:
>> On 07/12/2018 05:18 PM, Aleksey Shipilev wrote:
>>> On 07/12/2018 05:15 PM, Zhengyu Gu wrote:
>>>> Updated:
>>>>
>>>> http://cr.openjdk.java.net/~zgu/shenandoah/termination_tracking/webrev.01/
>>>
>>> Okay, good.
>>
>> Actually, I now have a follow-up question, why this assert was deleted?
>>
>> shenandoahConcurrentMark.cpp:
>>
>>    499   assert(task_queues()->is_empty(), "Should be empty");
>>
>> Please reinstate if that removal was erroneous.
> Yep, and we should report queue stats at the very end.
> 
> http://cr.openjdk.java.net/~zgu/shenandoah/tq_stats/webrev.00/

Looks good.

-Aleksey