RFR: Use PLAB for evacuations instead of TLAB

[Roman Kennke]

Am 10.05.2018 um 01:24 schrieb Zhengyu Gu:
>>
>>> ShenandoahHeap.cpp L1499
>>>    Need scope block for
>>> 1499   ShenandoahGCPhase phase(ShenandoahPhaseTimings::make_parsable);
>>> 1500   make_tlabs_parsable(true);
>>>
>>> or should just keep UseTLAB test here to avoid misleading timing info,
>>> in case of phase time > 0.
>>
>> We also need to always retire the GCLABs, regardless of UseTLABs, the
>> test is moved into the retire_all_tlabs() code.
>>
> Ah, I missed changes in make_tlabs_parsable() :-(

Can I take that as approval from you? ;-)

I would like to get Aleksey's ok too.

Roman