RFR: Refactor region flags into FSM

[Zhengyu Gu]

On 08/24/2017 10:10 AM, Aleksey Shipilev wrote:
> On 08/24/2017 03:39 PM, Zhengyu Gu wrote:
>> Fail to commit an uncommitted region, does not necessarily mean out-of-memory, you may still have
>> plenty regions in free set after this region, may make sense to have free set to skip this region
>> and continue?
> 
> Yes, we shall do that when refactoring free set.
> 
> But as far as current code is concerned, we are at allocation path that should transit the region to
> proper state. Failure to reach that state is fatal. Therefore I think crashing the VM is better
> choice in this case...
Okay,

-Zhengyu

> 
> Thanks,
> -Aleksey
> 
>