RFR: Simplify parallel synchronizer roots iterator

[Aleksey Shipilev]

On 05/10/2017 04:53 PM, Roman Kennke wrote:
> Am 10.05.2017 um 16:14 schrieb Aleksey Shipilev:
>> On 05/10/2017 04:11 PM, Roman Kennke wrote:
>>> http://cr.openjdk.java.net/~rkennke/simplify-sync-roots/webrev.01/
>> The idea sounds fine.
>>
>>  *) my_cur and next_block variables could be *void, to avoid clutter?
> Infact, I made them be ObjectMonitor* instead, and also let claim()
> return ObjectMonitor*. This looks like the usual way to ignore PaddedEnd
> unless where it's needed (e.g. below in iteration code).
>>  *) I still see the asserts that reference CLAIMEDMARKER -- does it even build
>> with fastdebug?
> Oops.
> 
> Also, we don't need the destructor anymore to restore CHAINEDMARKER, and
> we also don't need _head anymore. Yippie!
> 
> http://cr.openjdk.java.net/~rkennke/simplify-sync-roots/webrev.02/
> <http://cr.openjdk.java.net/%7Erkennke/simplify-sync-roots/webrev.02/>
> 
> Ok now?

OK.

-Aleksey