8232533: G1 uses only a single thread for pretouching the java heap

[yftsai]

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Issue

• JDK-8232533: G1 uses only a single thread for pretouching the java heap

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk11u-dev pull/751/head:pull/751
$ git checkout pull/751

Update a local copy of the PR:
$ git checkout pull/751
$ git pull https://git.openjdk.java.net/jdk11u-dev pull/751/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 751

View PR using the GUI difftool:
$ git pr show -t 751

Using diff file

Download this PR as a diff file:
https://git.openjdk.java.net/jdk11u-dev/pull/751.diff

[bridgekeeper]

Hi @yftsai, welcome to this OpenJDK project and thanks for contributing!

We do not recognize you as Contributor and need to ensure you have signed the Oracle Contributor Agreement (OCA). If you have not signed the OCA, please follow the instructions. Please fill in your GitHub username in the "Username" field of the application. Once you have signed the OCA, please let us know by writing /signed in a comment in this pull request.

If you already are an OpenJDK Author, Committer or Reviewer, please click here to open a new issue so that we can record that fact. Please use "Add GitHub user yftsai" as summary for the issue.

If you are contributing this work on behalf of your employer and your employer has signed the OCA, please let us know by writing /covered in a comment in this pull request.

[yftsai]

/covered

[openjdk]

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

[bridgekeeper]

Thank you! Please allow for a few business days to verify that your employer has signed the OCA. Also, please note that pull requests that are pending an OCA check will not usually be evaluated, so your patience is appreciated!

[simonis]

Hi @robilad (or whoever else approves the OCA coverage),

I can confirm that @yftsai (Yi-Fan Tsai) is a member of the Corretto team at Amazon and covered by Amazon's company-wide OCA.

Best regards,
Vollker

[openjdk]

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

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

8232533: G1 uses only a single thread for pretouching the java heap

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 54 new commits pushed to the master branch:

• 5ffd40d: 8273341: Update Siphash to version 1.0
• 0c4803b: 8278871: [JVMCI] assert((uint)reason < 2* _trap_hist_limit) failed: oob
• 3352b56: 8275326: C2: assert(no_dead_loop) failed: dead loop detected
• ad94355: 8251127: clean up FileInstaller $test.src $cwd in remaining vmTestbase_vm_compiler tests
• 9ca6369: 8252005: narrow disabling of allowSmartActionArgs in vmTestbase
• 32219ca: Merge
• 1453335: 8217375: jarsigner breaks old signature with long lines in manifest
• 55e5e04: 8270498: Improve SAX Parser configuration management
• 2a9bda7: 8279541: Improve HarfBuzz
• 256c17f: 8268801: Improve PKCS attribute handling
• ... and 44 more: https://git.openjdk.java.net/jdk11u-dev/compare/5a3a17bf2b5e8ff9cf22e6de12b8e6d6dfc26045...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.

As you do not have Committer status in this project an existing Committer must agree to sponsor your change.

➡️ 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).

[mlbridge]

Webrevs

• 00: Full (61c02220)

[GoeLin]

@yftsai , please enable Pre-submit tests!

[yftsai]

/integrate

[openjdk]

@yftsai
Your change (at version 61c0222) is now ready to be sponsored by a Committer.

[phohensee]

/sponsor

[openjdk]

Going to push as commit 914d48c.
Since your change was applied there have been 59 commits pushed to the master branch:

• ec03928: 8273933: [TESTBUG] Test must run without preallocated exceptions
• cba6c04: 8268542: serviceability/logging/TestFullNames.java tests only 1st test case
• 521144c: 8251998: remove usage of PropertyResolvingWrapper in vmTestbase/jit/t
• f69e75f: 8273438: Enable parallelism in vmTestbase/metaspace/stressHierarchy tests
• 574c04c: 8273433: Enable parallelism in vmTestbase_nsk_sysdict tests
• 5ffd40d: 8273341: Update Siphash to version 1.0
• 0c4803b: 8278871: [JVMCI] assert((uint)reason < 2* _trap_hist_limit) failed: oob
• 3352b56: 8275326: C2: assert(no_dead_loop) failed: dead loop detected
• ad94355: 8251127: clean up FileInstaller $test.src $cwd in remaining vmTestbase_vm_compiler tests
• 9ca6369: 8252005: narrow disabling of allowSmartActionArgs in vmTestbase
• ... and 49 more: https://git.openjdk.java.net/jdk11u-dev/compare/5a3a17bf2b5e8ff9cf22e6de12b8e6d6dfc26045...master

Your commit was automatically rebased without conflicts.

[openjdk]

@phohensee @yftsai Pushed as commit 914d48c.

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