Ported from 7ac9ca128885c5dd561e6fbd6bbeaddb86d6264c to the latest upstream fibers branch. Adapted to the current API which renamed implRegister/implDeregister to implStartPoll/implStopPoll and added Mode/EventFD/Cleaner/PollerGroup architecture.
------------- Commit messages: - Delete test/jdk/java/lang/Thread/virtual/CarrierAffinity.java - Use edge-triggered epoll for VT read sub-pollers Changes: https://git.openjdk.org/loom/pull/223/files Webrev: https://webrevs.openjdk.org/?repo=loom&pr=223&range=00 Stats: 97 lines in 7 files changed: 79 ins; 2 del; 16 mod Patch: https://git.openjdk.org/loom/pull/223.diff Fetch: git fetch https://git.openjdk.org/loom.git pull/223/head:pull/223 PR: https://git.openjdk.org/loom/pull/223
