8357581: [JVMCI] Add HotSpotProfilingInfo

[dougxc]

Graal is adding enhanced logic to detect deoptimization cycles and needs to be able to query a method's decompilation counter (i.e. MethodData::_compiler_counters._nof_decompiles).
This PR adds the HotSpotProfilingInfo interface so that such HotSpot-specific profiling info can be accessed.
The change looks bigger in the GitHub review UI than it really is. I have simply renamed the pre-existing HotSpotProfilingInfo private class as HotSpotProfilingInfoImpl and repurposed the HotSpotProfilingInfo name for the new public interface.

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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

Issue

• JDK-8357581: [JVMCI] Add HotSpotProfilingInfo (Enhancement - P4)

Reviewers

• Tom Rodriguez (@tkrodriguez - Reviewer) Review applies to d95475b0
• Vladimir Kozlov (@vnkozlov - Reviewer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk.git pull/25397/head:pull/25397
$ git checkout pull/25397

Update a local copy of the PR:
$ git checkout pull/25397
$ git pull https://git.openjdk.org/jdk.git pull/25397/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 25397

View PR using the GUI difftool:
$ git pr show -t 25397

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk/pull/25397.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back dnsimon! 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]

@dougxc This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8357581: [JVMCI] Add HotSpotProfilingInfo

Reviewed-by: kvn, never

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 27 new commits pushed to the master branch:

• 90e076b: 8357654: [BACKOUT] JDK-8343580: Type error with inner classes of generic classes in functions generic by outer
• 6a07820: 8357285: JSR166 Test case testShutdownNow_delayedTasks failed
• b07da7b: 8357171: Test tools/jpackage/windows/WinOSConditionTest.java fails for non administrator
• ... and 24 more: https://git.openjdk.org/jdk/compare/12efc1fe3322d16f0e703b334912241d80dbaba9...master

As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

➡️ To integrate this PR with the above commit message to the master branch, type /integrate in a new comment.

[openjdk]

@dougxc The following labels will be automatically applied to this pull request:

• graal
• hotspot-compiler

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

[mlbridge]

Webrevs

• 01: Full - Incremental (12a9a059)
• 00: Full (d95475b0)

[tkrodriguez]

Looks good.

[vnkozlov]

Just one cosmetic comment about copyright year.

[vnkozlov]

this is one is fine since you copied it from an other file.

[vnkozlov]

Good.

[dougxc]

Thanks for the reviews.

/integrate

[openjdk]

Going to push as commit 2b6b766.
Since your change was applied there have been 28 commits pushed to the master branch:

• a58bfb9: 8357638: Problemlist more Hotspot tests for static JDK
• 90e076b: 8357654: [BACKOUT] JDK-8343580: Type error with inner classes of generic classes in functions generic by outer
• 6a07820: 8357285: JSR166 Test case testShutdownNow_delayedTasks failed
• ... and 25 more: https://git.openjdk.org/jdk/compare/12efc1fe3322d16f0e703b334912241d80dbaba9...master

Your commit was automatically rebased without conflicts.

[openjdk]

@dougxc Pushed as commit 2b6b766.

💡 You may see a message that your pull request was closed with unmerged commits. This can be safely ignored.