RFR: 8210883: ZGC: Parallel retire/resize/remap of TLABs

Erik Österlund erik.osterlund at oracle.com
Thu Sep 20 10:23:57 UTC 2018

Hi Per,

Looks good.


On 2018-09-20 12:08, Per Liden wrote:
> On 09/18/2018 10:24 PM, Per Liden wrote:
>> Let ZGC retire/resize/remap TLABs in parallel. This change builds on 
>> JDK-8210857 - "Allow retiring TLABs and collecting statistics in 
>> parallel​", which is currently also out on review.
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8210883
>> Webrev: http://cr.openjdk.java.net/~pliden/8210883/webrev.0
> While off-line reviewing with Erik we noticed that the 
> ZMarkRootsIteratorClosure obviously has to be owned by the 
> ZMarkRootsTask for the stat collection to work out as intended.
> To be symmetric, ZRelocateRootsIteratorClosure/ZRelocateRootsTask were 
> adjusted in the same way, even if it doesn't really matter in that case.
> Diff: http://cr.openjdk.java.net/~pliden/8210883/webrev.0vs1
> Full: http://cr.openjdk.java.net/~pliden/8210883/webrev.0
> /Per

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