[jdk21u-dev] RFR: 8332154: Memory leak in SynchronousQueue [v2]

[Aleksey Shipilev]

> Resolves the memory leak introduced in 22 and backported to 21.0.2.
> 
> Additional testing:
>  - [x] Linux x86_64 server fastdebug, `all`
>  - [x] Linux AArch64 server fastdebug, `all`

Aleksey Shipilev 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-8332154-syncqueue-memoryleak
 - Backport b78613b6813a85662fb2af2004d0b68002fe471d

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

Changes:
  - all: https://git.openjdk.org/jdk21u-dev/pull/624/files
  - new: https://git.openjdk.org/jdk21u-dev/pull/624/files/003db447..a91bb643

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=624&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=624&range=00-01

  Stats: 6133 lines in 186 files changed: 3669 ins; 1177 del; 1287 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/624.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/624/head:pull/624

PR: https://git.openjdk.org/jdk21u-dev/pull/624