RFR: 8373118: Test java/lang/Thread/virtual/Starvation.java timed out [v46]

[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 60 additional commits since the last revision:

 - Merge branch 'openjdk:master' into JDK-8373118
 - Re-introduce other updates; avoid O(n-squared) reactivation
 - Undo some external submit and signalling changes
 - re-introduce some fences; rework deactivation
 - Less memory traffic
 - Reduce memory traffic
 - Another set of scan tradeoffs
 - for testing different deactivation mechanics
 - No interleaved reactivate
 - More policy exploration
 - ... and 50 more: https://git.openjdk.org/jdk/compare/4bdcad98...0f2a3624

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Changes:
  - all: https://git.openjdk.org/jdk/pull/28797/files
  - new: https://git.openjdk.org/jdk/pull/28797/files/35781c13..0f2a3624

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=28797&range=45
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=28797&range=44-45

  Stats: 111100 lines in 1052 files changed: 50864 ins; 40147 del; 20089 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