[jdk11u-dev] RFR: 8251570: JDK-8215624 causes assert(worker_id < _n_workers) failed: Invalid worker_id

[Bin Liao]

This patch is backport based on https://github.com/openjdk/jdk11u-dev/pull/127

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Depends on: https://git.openjdk.java.net/jdk11u-dev/pull/127

Commit messages:
 - Backport 2631422bc55c8a411e170c5bf737a1882a61d2f5

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/284/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=284&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8251570
  Stats: 76 lines in 12 files changed: 33 ins; 36 del; 7 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/284.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/284/head:pull/284

PR: https://git.openjdk.java.net/jdk11u-dev/pull/284