RFR: 8214056: Allow the GC to attach context information to CompiledMethod

[Erik Österlund]

Hi Aleksey,

Thanks for the review. I liked your idea of having the casting done by 
the accessors, like we did for GC data on Thread.
So here is a new webrev with that approach: 
http://cr.openjdk.java.net/~eosterlund/8214056/webrev.01/

Thanks,
/Erik

On 2018-11-19 16:43, Aleksey Shipilev wrote:
> On 11/19/18 4:27 PM, Erik Österlund wrote:
>> Hi,
>>
>> A GC might want extra GC-related information attached to a CompiledMethod.
>> I propose to introduce a type-erased _gc_data member, with accessors.
>> This allows ZGC to stick in some data we need to keep track of concurrent class unloading.
>>
>> Webrev:
>> http://cr.openjdk.java.net/~eosterlund/8214056/webrev.00/
> This looks generally useful. Patch looks good. Having the type-checked abstraction would be nicer,
> of course, but type-erased member would also do.
>
> -Aleksey
>