RFR: 8159590: Remove deprecated methods from jdk.internal.misc.VM

[Claes Redestad]

On 2016-06-17 03:35, David Holmes wrote:
> Hi Claes,
>
> On 17/06/2016 8:20 AM, Claes Redestad wrote:
>>> Isn't this variable unused now:
>>>
>>>   63     boolean vmAllowSuspension;
>>
>> Interestingly enough there are hooks in hotspot to compute offsets of
>> various fields in j.l.ThreadGroup, so even though the vmAllowSuspension
>> field is unused (on both sides), removing the field would require
>> changing code in hotspot.
>>
>> Tumbled down that rabbit hole to see how deep it goes, and was
>> pleasantly surprised that it didn't go very far at all:
>>
>> HS: http://cr.openjdk.java.net/~redestad/8159590/hotspot.02/
>> JDK: http://cr.openjdk.java.net/~redestad/8159590/jdk.02/
>>
>> I think the cleanup on the vm side might be trivial enough to be wrapped
>> into this change. What do you think?
>
> I'd need to look into the SA code as well and double-check some 
> things. But I'm off till next week :) If you want to move ahead 
> urgently then we can file a follow up cleanup bug for hotspot.

Not urgent enough to wait a few days to allow for this more thorough 
cleanup. :-)

/Claes