Re: [infinispan-dev] Runtime.onSpinWait()
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(a)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(a)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....
>>
>> Thanks,
>> Sanne
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