RFR: 8373118: Test java/lang/Thread/virtual/Starvation.java timed out [v9]

[Doug Lea]

> Changes signal filtering to avoid possible starvation

Doug Lea has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains 12 additional commits since the last revision:

 - Merge branch 'openjdk:master' into JDK-8373118
 - Another diagnostic
 - Relax orderings in push
 - Reduce fencing
 - Adjust runworker for previous update
 - Reorder signalWork filter
 - Revert topLevelExec
 - Merge branch 'openjdk:master' into JDK-8373118
 - Address review comments
 - signalWork diagnostic
 - ... and 2 more: https://git.openjdk.org/jdk/compare/a99e3875...9b2f082d

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/28797/files
  - new: https://git.openjdk.org/jdk/pull/28797/files/debaf274..9b2f082d

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=28797&range=08
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=28797&range=07-08

  Stats: 8648 lines in 356 files changed: 5837 ins; 1035 del; 1776 mod
  Patch: https://git.openjdk.org/jdk/pull/28797.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28797/head:pull/28797

PR: https://git.openjdk.org/jdk/pull/28797