RFR: JDK-8289524: Add JFR JIT restart event [v7]

Mon Jul 18 08:11:59 UTC 2022

> The JIT compiler restarts (see restart_compiler in NMethodSweeper::sweep_code_cache) would be a helpful addition to the JFR events. Currently we log the JIT stop operations in JFR (EventCodeCacheFull) but no restart.

Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:

  WhiteBox renaming

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Changes:
  - all: https://git.openjdk.org/jdk/pull/9334/files
  - new: https://git.openjdk.org/jdk/pull/9334/files/61d9d902..085ab42f

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=9334&range=06
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=9334&range=05-06

  Stats: 4 lines in 1 file changed: 0 ins; 1 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/9334.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9334/head:pull/9334

PR: https://git.openjdk.org/jdk/pull/9334