Added mirror event with static methods: jdk.internal.event.SelectionEvent that provides the duration of select calls and the count of how many keys are available.
Emit the event from SelectorImpl::lockAndDoSelect Test at jdk.jfr.event.io.TestSelectionEvents ------------- Commit messages: - remove trailing whitespace - event logic outside of the lock, selector in try block - remove unused import - fix TestConfigure failure - add event defaults - Merge branch 'master' into JDK-8310994 - minor test cleanup - Merge branch 'master' into JDK-8310994 - 8310994: Add JFR event for selection operations Changes: https://git.openjdk.org/jdk/pull/16710/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16710&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8310994 Stats: 265 lines in 9 files changed: 264 ins; 0 del; 1 mod Patch: https://git.openjdk.org/jdk/pull/16710.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/16710/head:pull/16710 PR: https://git.openjdk.org/jdk/pull/16710
