RFR: 8323296: java/lang/Thread/virtual/stress/GetStackTraceALotWhenPinned.java#id1 timed out [v2]

[Jaikiran Pai]

On Thu, 11 Jan 2024 16:50:42 GMT, Alan Bateman <alanb at openjdk.org> wrote:

>> This test was recently dialled down via JDK-8323002 but it still makes slow progress on some test machines, esp. macox-x64-debug builds. The issue is that the sampling of the target thread is skewed towards the unmounted case so the target thread is disabled from being scheduled and doesn't make progress. The test is re-worked to use a barrier so that the main thread and target virtual thread run in lock step. This allows the virtual thread to make progress at each iteration and also increases the chances of sampling the stack trace at around the time that the target thread transitions from being unmounted (due to the Thread.yield) and parking while pinned.
>
> Alan Bateman has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Run in othervm mode

Thank you Alan, the changes look good to me.

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Marked as reviewed by jpai (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/17353#pullrequestreview-1817235395