WIP: Jdk 8242220

[zhengyu123]

---

Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Error

 ⚠️ The pull request body must not be empty.

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk.git pull/27611/head:pull/27611
$ git checkout pull/27611

Update a local copy of the PR:
$ git checkout pull/27611
$ git pull https://git.openjdk.org/jdk.git pull/27611/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 27611

View PR using the GUI difftool:
$ git pr show -t 27611

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk/pull/27611.diff

[bridgekeeper]

👋 Welcome back zgu! 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]

@zhengyu123 The following label will be automatically applied to this pull request:

• hotspot-jfr

When this pull request is ready to be reviewed, an "RFR" email will be sent to the corresponding mailing list. If you would like to change these labels, use the /label pull request command.

[openjdk]

@zhengyu123 hotspot has been added to this pull request based on files touched in new commit(s).