RFR: 8187809: UseMembar should be set true and deprecate the flag

[Robbin Ehn]

Thanks Serguei!

/Robbin

On 11/09/2017 01:50 AM, serguei.spitsyn at oracle.com wrote:
> Hi Robbin,
> 
> Looks good.
> 
> Thanks,
> Serguei
> 
> On 11/8/17 12:52, Robbin Ehn wrote:
>> Hi,
>>
>> I forgot to say, UseMembar have been tested heavily on our supported platforms.
>> This particular changeset just passed sanity test of tier 1-2.
>>
>> Thanks, Robbin
>>
>> On 2017-11-08 21:48, Robbin Ehn wrote:
>>> Hi all, please review!
>>>
>>> This patch set the default technique for reading thread state to memory 
>>> barriers instead of using the asymmetric dekker synchronization on all 
>>> platforms. We also deprecate the option and starting the removal process. 
>>> There have been discussion with people involved in all platforms and we will 
>>> have another discussion before obsoleting the flag to make sure no issue have 
>>> been found.
>>>
>>> More info in CSR:
>>> https://bugs.openjdk.java.net/browse/JDK-8187812
>>>
>>> Bug:
>>> https://bugs.openjdk.java.net/browse/JDK-8187809
>>>
>>> Code:
>>> http://cr.openjdk.java.net/~rehn/8187809/webrev/
>>>
>>> Thanks, Robbin
>