[jdk11u-dev] RFR: 8251570: JDK-8215624 causes assert(worker_id < _n_workers) failed: Invalid worker_id [v2]

[Bin Liao]

> This patch is backport based on https://github.com/openjdk/jdk11u-dev/pull/127
> 
> I have built it on linux x86_64 and run test-tier1 successfully

Bin Liao 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 three additional commits since the last revision:

 - Backport 2631422bc55c8a411e170c5bf737a1882a61d2f5
 - Merge branch 'master' into parallel_heap_iter
 - 8266352: Add parallel heap iteration for jmap -histo
   
       8215624: Add parallel heap iteration for jmap histo
       8253763: ParallelObjectIterator should have virtual destructor

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

Changes:
  - all: https://git.openjdk.java.net/jdk11u-dev/pull/284/files
  - new: https://git.openjdk.java.net/jdk11u-dev/pull/284/files/d04253d8..d04253d8

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=284&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=284&range=00-01

  Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 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