Request for review: 7052429: G1: Avoid unnecessary scanning of humongous regions during concurrent marking

[Jesper Wilhelmsson]

Looks good!
Ship it!
/Jesper

On 2/2/13 3:37 AM, Tao Mao wrote:
> 7052429: G1: Avoid unnecessary scanning of humongous regions during
> concurrent marking
> https://jbs.oracle.com/bugs/browse/JDK-7052429
>
> webrev:
> http://cr.openjdk.java.net/~tamao/7052429/webrev.00/
>
> changeset:
> Avoid wasted work of _nextMarkBitMap->iterate() when the current region
> is a humongous region and the first bit is NOT marked, whereas the case
> where a humonguous region with its first bit marked is properly handled
> in iterate() routine.