8331931: JFR: Avoid loading regex classes during startup

[pengxiaolong]

Backport JDK-8331931 JFR: Avoid loading regex classes during startup

Validation

Run test make test TEST=jdk/jdk/jfr, all tests passed.

Test results: passed: 592
Report written to /local/home/xlpeng/repos/jdk22u-xlpeng/build/linux-aarch64-server-fastdebug/test-results/jtreg_test_jdk_jdk_jfr/html/report.html
Results written to /local/home/xlpeng/repos/jdk22u-xlpeng/build/linux-aarch64-server-fastdebug/test-support/jtreg_test_jdk_jdk_jfr
Finished running test 'jtreg:test/jdk/jdk/jfr'
Test report is stored in build/linux-aarch64-server-fastdebug/test-results/jtreg_test_jdk_jdk_jfr

==============================
Test summary
==============================
   TEST                                              TOTAL  PASS  FAIL ERROR   
   jtreg:test/jdk/jdk/jfr                              592   592     0     0   
==============================
TEST SUCCESS

Finished building target 'test' in configuration 'linux-aarch64-server-fastdebug'

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8331931 needs maintainer approval

Issue

• JDK-8331931: JFR: Avoid loading regex classes during startup (Bug - P4 - Requested)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk22u.git pull/241/head:pull/241
$ git checkout pull/241

Update a local copy of the PR:
$ git checkout pull/241
$ git pull https://git.openjdk.org/jdk22u.git pull/241/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 241

View PR using the GUI difftool:
$ git pr show -t 241

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk22u/pull/241.diff

Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back pengxiaolong! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

❗ This change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[openjdk]

This backport pull request has now been updated with issue from the original commit.

[openjdk]

⚠️ @pengxiaolong This change is now ready for you to apply for maintainer approval. This can be done directly in each associated issue or by using the /approval command.

[mlbridge]

Webrevs

• 01: Full - Incremental (fb8d8a41)
• 00: Full (87b47b2b)

[pengxiaolong]

/approval request Backport JDK-8331931 JFR: Avoid loading regex classes during startup to jdk22, I have validated the backport by running test jdk/jdk/jfr. Applies cleanly. Overall risk should be low, it's fairly simple change and related tests have passed.

[openjdk]

@pengxiaolong
8331931: The approval request has been created successfully.

[bridgekeeper]

@pengxiaolong This pull request has been inactive for more than 4 weeks and will be automatically closed if another 4 weeks passes without any activity. To avoid this, simply add a new comment to the pull request. Feel free to ask for assistance if you need help with progressing this pull request towards integration!