RFR(S): 8040807: G1: Enable G1CollectedHeap::stop()

[Jon Masamitsu]

Looks good.

Reviewed.

Jon

On 05/20/2014 04:59 AM, Per Liden wrote:
> Looking for a couple of reviews in this patch.
>
> Summary: This patch re-enables the controlled stopping of G1's 
> concurrent threads at VM shutdown. This could potentially cause hangs 
> during VM shutdown because the G1 marking threads could get stuck in 
> various places and fail to terminate. JDK-8040803 and JDK-8040804 
> fixed these issues, so this is the final step to re-enable the actual 
> stopping of those threads. This patch also moves the call to 
> CollectedHeap::stop() a few lines down to group the GC related stuff 
> together. It also adjusts/removes some comments that are no longer 
> correct.
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8040807
> Webrev: http://cr.openjdk.java.net/~pliden/8040807/webrev.0/
>
> Testing:
> - GC nightlies. 5 tests in this suite used to timeout because of the 
> issue with hanging threads. They now pass.
> - JPRT
>
> Thanks!
> /Per