RFR (XS): CR 8004330: Add missing Unsafe entry points for addAndGet() family

[Aleksey Shipilev]

Vladimir, Christian, Roland, anyone, can you please sponsor this trivial
change?

-Aleksey.

On 12/05/2012 03:34 PM, Aleksey Shipilev wrote:
> Friendly reminder to check this didn't fall into the trenches.
> 
> -Aleksey.
> 
> On 12/04/2012 02:42 AM, Aleksey Shipilev wrote:
>> (I should have CC'ed Doug on this, doing now).
>>
>> -Aleksey.
>>
>> On 12/04/2012 02:36 AM, Aleksey Shipilev wrote:
>>> (again, submitting on behalf of Doug Lea)
>>>
>>> Hi,
>>>
>>> This simple change is missing from recently committed CR 7023898. While
>>> the VM support is there in Hotspot, no methods are exposed in Unsafe to
>>> actually make use of those intrinsics. This is the webrev fixing that:
>>>   http://shipilev.net/pub/jdk/hotspot/unsafe-getandadd/webrev-1/
>>>
>>> Testing:
>>>   - Built and tested in Linux x86_64
>>>   - Doug had provided the AtomicIntegerV8 [1] version making use of this
>>> new code, extensively tested on his platforms
>>>   - java-concurrency-torture [2] atomicity tests [3] are passed for
>>> AtomicIntegerV8 on my and Doug's platforms
>>>   - no other testing is expected for this trivial change.
>>>
>>> I would need a sponsor to push this change.
>>>
>>> Thanks,
>>> Aleksey.
>>>
>>> [1]
>>> https://github.com/shipilev/java-concurrency-torture/blob/master/src/main/java/java/util/concurrent/atomic/AtomicIntegerV8.java
>>> [2] https://github.com/shipilev/java-concurrency-torture/
>>> [3]
>>> https://github.com/shipilev/java-concurrency-torture/blob/master/src/main/java/org/openjdk/concurrent/torture/tests/atomics/integer/AtomicIntegerV8PairwiseTests.java
>>>
>>