RFR(S): 8211932: [ppc][testbug] runtime/jni/terminatedThread/TestTerminatedThread.java fails as threads don't terminate immediately

[David Holmes]

Hi Goetz,

There is already an open bug for this issue - JDK-8208159 - but it has 
only reproduced in a stress environment where we think thread-id's are 
being recycled (which means waiting longer won't help). This should be 
OS not CPU specific so I'm very interested to know in what circumstances 
you see this failure.

I created an instrumented version of the test that did a pthread_kill on 
the target to check for ESRCH - which it got - yet we still see failures 
in those stress environments.

David

On 10/10/2018 1:10 AM, Lindenmaier, Goetz wrote:
> Hi,
> 
> On ppc, one still sees increasing thread cpu times after a thread has joined.
> This makes TestTerminatedThread fail.
> 
> This change gives the check a few seconds to wait until the thread disappears.
> Please review.
> http://cr.openjdk.java.net/~goetz/wr18/8211931-terminatedThrd/01/test/hotspot/jtreg/runtime/jni/terminatedThread/TestTerminatedThread.java.udiff.html
> 
> Best regards,
>    Goetz.
>