Integrated: 8339979: VirtualThreadSchedulerMXBeanTest.testReduceParallelism fails intermittently

[Alan Bateman]

On Wed, 2 Oct 2024 18:34:53 GMT, Alan Bateman <alanb at openjdk.org> wrote:

> This is a test only change. VirtualThreadSchedulerMXBeanTest.testReduceParallelism can fail when getMountedVirtualThreadCount over estimates the number of mounted virtual threads.
> 
> The test is changed from using getMountedVirtualThreadCount to sample the result until it reads the expected value.
> 
> As part of the change, the awaitXXX supporting methods are refactored to take a predicate and the trace message.

This pull request has now been integrated.

Changeset: eb93e695
Author:    Alan Bateman <alanb at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/eb93e6952b5d2dbe78cd9680855ac99c69b3dcb2
Stats:     80 lines in 1 file changed: 57 ins; 8 del; 15 mod

8339979: VirtualThreadSchedulerMXBeanTest.testReduceParallelism fails intermittently

Reviewed-by: kevinw

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PR: https://git.openjdk.org/jdk/pull/21310