RFR: 8229017: ZGC: Various cleanups of ZVerify

[Stefan Karlsson]

Looks good.

StefanK

On 2019-08-05 15:52, Per Liden wrote:
> Stefan asked me to break out the ZStatTimerDisable fix into a separate 
> fix, which I did (JDK-8229135), so here's an updated webrev without that 
> part:
> 
> http://cr.openjdk.java.net/~pliden/8229017/webrev.1
> 
> /Per
> 
> On 8/2/19 11:40 AM, Per Liden wrote:
>> Hi,
>>
>> This patch does various cleanups of ZVerify, basically a post-commit 
>> review of JDK-8227175. The patch mostly moves some code around and 
>> adjusts a few names. However, there's also one bug fix and one logic 
>> change:
>>
>> * ZVerify::roots_strong() didn't have a ZStatTimerDisable.
>>
>> * The call to ClassLoaderDataGraph::clear_claimed_marks() was moved 
>> from ZMarkConcurrentRootsTask() to ZConcurrentRootsIterator(), and now 
>> only clears the claim type the iterator actually used (instead of all 
>> types).
>>
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8229017
>> Webrev: http://cr.openjdk.java.net/~pliden/8229017/webrev.0
>>
>> /Per