RFR: 8163589: Add back intrinsic methods for event based tracing

[Vladimir Kozlov]

On 8/16/16 2:19 AM, Markus Gronlund wrote:
> Hi Robbin,
>
> Thanks for noticing and catching this - looks good.

+1.

Thanks,
Vladimir

>
> Markus
>
> -----Original Message-----
> From: Robbin Ehn
> Sent: den 15 augusti 2016 07:37
> To: hotspot-compiler-dev at openjdk.java.net
> Subject: Re: RFR: 8163589: Add back intrinsic methods for event based tracing
>
> Hi again, please review!
>
> Fortunately I saw that I had missed a logical change (from 8 to 9) how class id is retrieved, sorry about that.
> Instead of masking away the two low bits, we use an arbitrary mask and an arbitrary right shift.
>
> Here is the incremental::
> http://cr.openjdk.java.net/~rehn/8163589/hotspot.02-03/
> with full here:
> http://cr.openjdk.java.net/~rehn/8163589/hotspot.03/
>
> Tested with JMH and relevant RBT test group.
>
> Thanks!
>
> /Robbin
>
> On 08/10/2016 04:05 PM, Robbin Ehn wrote:
>> Hi all,
>>
>> In 8 we had this intrinsic, I'm adding it back Used for event based
>> tracing.
>>
>> Webrev: http://cr.openjdk.java.net/~rehn/8163589/hotspot.01/webrev/
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8163589
>>
>> Thanks!
>>
>> /Robbin