RFR: 8048269: Add flag to turn off class unloading after G1 concurrent mark

[Jon Masamitsu]

I'll let my "UseReducedClassUnloading" go, but

On 7/11/2014 12:52 AM, Bengt Rutisson wrote:
>
> ...
> Talked some more to Stefan about this.
>
> The suggestion he made to call it -XX:+ClassUnloadingAfterConcMark is 
> based on that the high level flag to control all class unloading is 
> called -XX:+ClassUnloading. So, this name is kind of a specialization 
> of the overall flag. I kind of like that (even if I think the overall 
> flag should have been called .XX:+UseClassUnloading). However, 
> ConcMark sounds very CMS-like for me. I think my preferred flag name 
> for the moment is:
>
> -XX:+ClassUnloadingAfterConcurrentMark

I don't care for ClassUnloadingAfterConcurrentMark because turning it
off makes me think that class unloading is going to occur "Before"
concurrent mark.  How about

ClassUnloadingWithConcurrentMark

or

ClassUnloadingWithConcurrentCollect

or

ClassUnloadingWithConcurrentGC

Jon