RFR: 8307535: java.util.logging.Handlers should be more VirtualThread friendly [v3]

[Daniel Fuchs]

> Several Handlers class use monitors to synchronize when formatting / publishing LogRecords.
> When logging within a VirtualThread, holding this monitor can cause the carrier thread to be pinned.
> Handlers could use jdk.internal.misc.InternalLock, in a similar way to some java.io classes (such as PrintStream) to avoid pinning the carrier thread.

Daniel Fuchs has updated the pull request incrementally with one additional commit since the last revision:

  Use locks consistently

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Changes:
  - all: https://git.openjdk.org/jdk/pull/13832/files
  - new: https://git.openjdk.org/jdk/pull/13832/files/39646ce0..282c6e1b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=13832&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=13832&range=01-02

  Stats: 104 lines in 3 files changed: 90 ins; 2 del; 12 mod
  Patch: https://git.openjdk.org/jdk/pull/13832.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13832/head:pull/13832

PR: https://git.openjdk.org/jdk/pull/13832