Under load conditions, testVirtualThreadStartAndEnd can fail because the JFR recording doesn't have a VirtualThreadEndEvent recorded for all virtual threads. This is a test issue. ExecutorService::close waits for all tasks (not threads) to finish. For ThreadPerTaskExecutor the thread terminates after executing the task but there is still a small window between task completion and thread termination. The test is changed to use Thread::join so it waits for the 100 threads to terminate, avoid the fragile sleep that we had in the original test.
------------- Commit messages: - Initial commit Changes: https://git.openjdk.org/jdk/pull/26916/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=26916&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8365893 Stats: 8 lines in 1 file changed: 3 ins; 1 del; 4 mod Patch: https://git.openjdk.org/jdk/pull/26916.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/26916/head:pull/26916 PR: https://git.openjdk.org/jdk/pull/26916
