Staging this as a Draft PR for now (FYI: @AlanBateman @DougLea) -------------
Commit messages: - Restoring setParallelism - Restoring VirtualThread changes - Adding acquire fence to FJP::push - Revert "8360046: Scalability issue when submitting virtual threads with almost empty tasks" Changes: https://git.openjdk.org/jdk/pull/30023/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=30023&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8375130 Stats: 467 lines in 2 files changed: 143 ins; 140 del; 184 mod Patch: https://git.openjdk.org/jdk/pull/30023.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/30023/head:pull/30023 PR: https://git.openjdk.org/jdk/pull/30023
