8005697: Add StampedLock - JEP 155

[Doug Lea]

On 01/28/13 07:16, Aleksey Shipilev wrote:
> On 01/28/2013 03:32 PM, Chris Hegarty wrote:
>> Webrev:
>>    http://cr.openjdk.java.net/~chegar/8005697/ver.00/webrev/webrev/
>
> The only nit I find unlucky is that we need to duplicate the TLR code in
> LockSupport. It looks like we would be better off with the helper class
> sharing this functionality. I would speculate Doug will contaminate more
> classes in j.u.c.* with these TLR copy-paste patches, and so we can
> figure this out once and for all when the dust settles.
>

Yes, exactly so. Maybe someday with module support there will
be a nicer way of coping with package-protection problems accessing
Thread fields. Until then, because j.u.c has two subpackages
(atomic, locks), there's no nice workaround that I know of.

-Doug