RFR for JDK-6963118 Intermittent test failure: test/java/nio/channels/Selector/Wakeup.java fail intermittently (win)

srikalyan srikalyan.chandrashekar at oracle.com
Mon Dec 9 20:14:46 UTC 2013

Hi all, a gentle reminder for review.

Ph: (408)-585-8040

On 12/2/13, 6:39 PM, srikalyan chandrashekar wrote:
> Hi all, I am working on bug JDK-6963118 
> <https://bugs.openjdk.java.net/browse/JDK-6963118> .
> Root Cause:
> - Sensitive timing dependency between events in Main and Sleeper 
> threads are causes for test failure.
> Suggested Fix:
>   1) Main thread should wait for more than 1sec(made it 3sec) and 
> check more often than 50ms(made it 1ms) intervals , sleeper thread may 
> be still waiting for interrupt/wakeup hence main thread waiting for 
> just 1sec to flag a failure is premature . The reason is especially on 
> windows high priority virus scanners etc run(we faced it when 
> simulating failures) and kept the system busy.
>   2) The test is essentially a sequence of 2 events
>   a)Firing up wakeups/interrupts followed by a
>   b)Check
>  Check the sleeper.entries value and yield the main thread as required 
> so that the above 2 events step in tandem.
> The webrev is hosted at 
> http://cr.openjdk.java.net/~cl/host_for_kal/6963118-Wakeup/ .
> Please let me know if you have any comments or suggestions.
> -- 
> --
> Thanks
> kalyan

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