[jdk17u-dev] RFR: 8256811: Delayed/missed jdwp class unloading events [v2]

[Andrew Dinn]

> Backport of patch to fix class unloading event notification.
> 
> This backport was originally developed by @zhengyu123 and involved some minor changes to the original patch.
> 
> n.b. the original patch required a follow up fix (cf JDK-8290908) which also needs backporting after this has been included.

Andrew Dinn 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 two additional commits since the last revision:

 - Merge branch 'master' into JDK-8256811
 - Backport 54854d9300479c22c416fd9d2fdb5c29fc1884bc

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

Changes:
  - all: https://git.openjdk.org/jdk17u-dev/pull/635/files
  - new: https://git.openjdk.org/jdk17u-dev/pull/635/files/d7e00531..25678462

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=635&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=635&range=00-01

  Stats: 524 lines in 32 files changed: 160 ins; 314 del; 50 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/635.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/635/head:pull/635

PR: https://git.openjdk.org/jdk17u-dev/pull/635