8370578: SystemMapTest.java#normal fails intermittendly on macOS aarch64

[stooke]

This PR addresses JDK-8370578

Under certain circumstances, OpenJDK on macOS maps the hsperf segment private instead of shared; one of those cases is hit during the tier1 tests, which test for that.

This PR allows for shared or private mapping; the purpose of the intermittently failing test is to test System.map implementation, not JDK internals.

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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-8370578: SystemMapTest.java#normal fails intermittendly on macOS aarch64 (Bug - P4)

Reviewers

• Thomas Stuefe (@tstuefe - Reviewer) Review applies to 8a33c39c
• Chris Plummer (@plummercj - Reviewer)
• Serguei Spitsyn (@sspitsyn - Reviewer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk.git pull/28025/head:pull/28025
$ git checkout pull/28025

Update a local copy of the PR:
$ git checkout pull/28025
$ git pull https://git.openjdk.org/jdk.git pull/28025/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 28025

View PR using the GUI difftool:
$ git pr show -t 28025

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk/pull/28025.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back stooke! 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]

@stooke 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:

8370578: SystemMapTest.java#normal fails intermittendly on macOS aarch64 Reviewed-by: cjplummer, sspitsyn, stuefe 

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 35 new commits pushed to the master branch:

• 795bf9f: 8351159: Remaining cleanups in cpu/x86 after 32-bit x86 removal
• 80fcfaf: 8369435: C2: transform (LShiftX (SubX con0 a), con1) into (SubX con0<<con1 (LShiftX a con1))
• 87e5341: 8370804: G1: Make G1HeapRegionAttr::remset_is_tracked() conform to coding style
• ... and 32 more: https://git.openjdk.org/jdk/compare/20e55fafb39dd74a044d7fda8a2b3409cc00bf54...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.

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➡️ To flag this PR as ready for integration with the above commit message, type /integrate in a new comment. (Afterwards, your sponsor types /sponsor in a new comment to perform the integration).

[openjdk]

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

• serviceability

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[mlbridge]

Webrevs

• 02: Full - Incremental (e66b02f1)
• 01: Full - Incremental (b2f8224e)
• 00: Full (8a33c39c)

[tstuefe]

Looks good!

[tstuefe]

Arguably, this is simple enough to fall under the trivial rule, but lets wait for other reviewers a bit.

[sspitsyn]

Looks good.

[stooke]

@tstuefe @plummercj @sspitsyn thanks for the reviews.

[stooke]

/integrate

[openjdk]

@stooke
Your change (at version e66b02f) is now ready to be sponsored by a Committer.