This is a test only change. VirtualThreadSchedulerMXBeanTest.testReduceParallelism can fail if getMountedVirtualThreadCount over estimates the number of mounted virtual threads.
The change is changed from using getMountedVirtualThreadCount to use an awaitXXX method that will sample the mounted virtual thread count until it reads an expected value. As part of the change, the awaitXXX supporting methods are changed to take a predicate and the trace message. ------------- Commit messages: - Initial commit Changes: https://git.openjdk.org/jdk/pull/21310/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21310&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8339979 Stats: 55 lines in 1 file changed: 18 ins; 10 del; 27 mod Patch: https://git.openjdk.org/jdk/pull/21310.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/21310/head:pull/21310 PR: https://git.openjdk.org/jdk/pull/21310
