[infinispan-dev] Runtime.onSpinWait()

[Sanne Grinovero]

Right, it's a PAUSE; you can follow the mailing list thread I linked
to to learn about the background.
Also Gil Tene shared a very nice project so we can all experiment with it:
 - https://github.com/giltene/GilExamples/tree/master/SpinWaitTest

The Readme file contains links to experimental OpenJDK builds
including the patch.

On 28 January 2016 at 07:04, Ladislav Thon <lthon at redhat.com> wrote:
>> Any idea how HotSpot would optimize spin-waiting? The patch contains
>> just the method definition...
>
> IIUC, it's supposed to emit the PAUSE instruction on x86; can be a noop
> (or any other architecture-specific insn) on other architectures.
>
> LT
>
>>
>> Cheers
>> Dan
>>
>>
>> On Wed, Jan 27, 2016 at 6:41 PM, Sanne Grinovero <sanne at infinispan.org> wrote:
>>> Hello all,
>>> I've been following the discussion about onSpinWait(), it seems JDK9
>>> might get it.
>>>
>>> That looks quite interesting, especially after having noticed that
>>> sometimes we "burn CPU" while we could hint that the thread should
>>> rather be descheduled.
>>>
>>> http://mail.openjdk.java.net/pipermail/core-libs-dev/2016-January/038361.html
>>>
>>> Thanks,
>>> Sanne
>>> _______________________________________________
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>>> infinispan-dev at lists.jboss.org
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