RFR: Resettable iterators to avoid dealing with copying/assignment compilation differences

[Roman Kennke]

Am 04.06.2018 um 13:10 schrieb Aleksey Shipilev:
> http://cr.openjdk.java.net/~shade/shenandoah/iterator-copy-reset/webrev.01/
> 
> Following up on MacOS/Clang build failures. The way we deal with iterators is still not good, and
> Clang complains that it wanted to use copying constructor -- and failed, because we marked it
> private. Let's instead disallow copying and make explicit resets where needed.
> 
> Testing: hotspot_gc_shenandoah, eyeballing gc cycle
> 
> Thanks,
> -Aleksey
> 

Ok. Thanks!