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List: openjdk-serviceability-dev
Subject: Re: RFR (S): 8223736: jvmti/scenarios/contention/TC04/tc04t001/TestDescription.java fails due to
From: "serguei.spitsyn () oracle ! com" <serguei ! spitsyn () oracle ! com>
Date: 2019-06-20 23:20:55
Message-ID: f57404d6-3a59-fbc5-cb9a-505b6f920eb0 () oracle ! com
[Download RAW message or body]
Thanks a lot, Chris!
Serguei
On 6/20/19 16:04, Chris Plummer wrote:
> Looks good.
>
> Chris
>
> On 6/20/19 2:56 PM, serguei.spitsyn@oracle.com wrote:
>> PING ...
>>
>>
>> On 6/19/19 18:59, serguei.spitsyn@oracle.com wrote:
>>> Sorry, forgot the bug title to add to the email subject.
>>>
>>> Thanks,
>>> Serguei
>>>
>>> On 6/19/19 6:09 PM, serguei.spitsyn@oracle.com wrote:
>>>> Please review a fix for test bug:
>>>> https://bugs.openjdk.java.net/browse/JDK-8223736
>>>>
>>>> Webrev:
>>>> http://cr.openjdk.java.net/~sspitsyn/webrevs/2019/8223736-mon-events-test.1/
>>>>
>>>>
>>>> Summary:
>>>> It seems that waiting for 0.5 sec for a MonitorContendedEnter
>>>> event in the
>>>> increment() method sometime is not enough (especially when the JFR
>>>> is enabled).
>>>> The fix implement an approach to ensure the event has posted
>>>> before the worker
>>>> thread goes to the next iteration.
>>>> Also, another check is added to diagnose if any of two worker threads
>>>> (tc04t001Thread) has been interrupted by timeout.
>>>> In fact, we have many other tests which miss this kind of check
>>>> and diagnostics.
>>>> We may want to consider fixing other cases if we encounter this
>>>> eventually happens.
>>>>
>>>> Testing:
>>>> A mach5 test submission is in progress.
>>>>
>>>> Thanks,
>>>> Serguei
>>>>
>>>
>>
>
>
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