RFR(s): 8029162: G1: Shared SATB queue never enabled

[Mikael Gerdin]

Per,

On Thursday 28 November 2013 17.49.53 Per Liden wrote:
> Summary: When activating/deactivating the G1 pre-barrier all SATB queues
> are looped through and have their active state set accordingly. There is
> one queue per Java thread and a shared queue for all non-Java threads.
> The loop done to set the active state of all queues forgets to set the
> active state on the shared queue. I suspect this was missed because the
> logic in SATBMarkQueueSet::set_active_all_threads() is mixed with quite
> a bit of verification code. This patch also moves this verification code
> out into a separate function.
> 
> Testing done: jprt, kitchensink (10 hours), gcbasher (10 hours)
> 
> http://cr.openjdk.java.net/~pliden/8029162/webrev.0/

The change looks good to me.

Since this change enables the bug in JDK-8029255 I assume that these changes 
must be applied together?

/Mikael

> 
> https://bugs.openjdk.java.net/browse/JDK-8029162
> 
> cheers,
> /Per