[8u] Request for approval - 8145539: (coll) AbstractMap.keySet and .values should not be volatile

[Aleksey Shipilev]

Thank you, Rob!

-Aleksey

On 12/23/2015 03:18 AM, Rob McKenna wrote:
> Approved. Please add the appropriate noreg label to the bug.
> 
> I can push this for you over the next day or two.
> 
>     -Rob
> 
> On 22/12/15 18:38, Aleksey Shipilev wrote:
>> Hi,
>>
>> Please approve and sponsor this simple backport for an old (yet
>> important) performance issue in collections:
>>    https://bugs.openjdk.java.net/browse/JDK-8145539
>>
>> The fix was in jdk9/dev for at least 4 days now.
>>
>> JDK 9 Changeset:
>>    http://hg.openjdk.java.net/jdk9/dev/jdk/rev/ce72c7641f38
>>
>> JDK 9 review thread:
>>
>> http://mail.openjdk.java.net/pipermail/core-libs-dev/2015-December/037674.html
>>
>>
>> Patch applies with little fuzz after unshuffling. For the record, this
>> is the clean patch against current 8u:
>>    http://cr.openjdk.java.net/~shade/8145539/8145539-8u.patch
>>
>> Testing: builds and runs fine on Linux x86_64, microbenchmark
>> improvements are the same as in JDK 9.
>>
>> Thanks,
>> -Aleksey
>>