8272975: ParallelGC: add documentation to heap memory layout

[albertnetymk]

Simple change of adding some documentation.

---

Progress

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

Issue

• JDK-8272975: ParallelGC: add documentation to heap memory layout

Reviewers

• Thomas Schatzl (@tschatzl - Reviewer)
• Kim Barrett (@kimbarrett - Reviewer)

Contributors

• Thomas Schatzl <tschatzl@openjdk.org>

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk pull/5247/head:pull/5247
$ git checkout pull/5247

Update a local copy of the PR:
$ git checkout pull/5247
$ git pull https://git.openjdk.java.net/jdk pull/5247/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 5247

View PR using the GUI difftool:
$ git pr show -t 5247

Using diff file

Download this PR as a diff file:
https://git.openjdk.java.net/jdk/pull/5247.diff

[bridgekeeper]

👋 Welcome back ayang! 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]

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

• hotspot-gc

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.

[mlbridge]

Webrevs

• 00: Full (6760837e)

[albertnetymk]

/contributor add tschatzl

[openjdk]

@albertnetymk
Contributor Thomas Schatzl <tschatzl@openjdk.org> successfully added.

[tschatzl]

Lgtm (and trivial if it matters, but please let somebody else have a look at it too).

[openjdk]

@albertnetymk 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:

8272975: ParallelGC: add documentation to heap memory layout

Co-authored-by: Thomas Schatzl <tschatzl@openjdk.org>
Reviewed-by: tschatzl, kbarrett

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 12 new commits pushed to the master branch:

• e36cbd8: 8242847: G1 should not clear mark bitmaps with no marks
• 2ef6871: 8272447: Remove 'native' ranked Mutex
• 63e062f: 8236176: Parallel GC SplitInfo comment should be updated for shadow regions
• c5a2712: 8272850: Drop zapping values in the Zap* option descriptions
• 1e3e333: 8272884: Make VoidClosure::do_void pure virtual
• 0f428ca: 8272570: C2: crash in PhaseCFG::global_code_motion
• b17b821: 8272639: jpackaged applications using microphone on mac
• 0e7288f: 8267125: AES Galois CounterMode (GCM) interleaved implementation using AVX512 + VAES instructions
• 6ace805: 8272856: DoubleFlagWithIntegerValue uses G1GC-only flag
• c547ead: 8272916: Copyright year was modified unintentionally in jlink.properties and ImagePluginStack.java
• ... and 2 more: https://git.openjdk.java.net/jdk/compare/f608e81ad8309a001b8a92563a93b8adee1ce2b8...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.

[kimbarrett]

Looks good.

[albertnetymk]

Thanks for the review.

/integrate

[openjdk]

Going to push as commit 11c9fd8.
Since your change was applied there have been 19 commits pushed to the master branch:

• b94fd32: 8272859: Javadoc external links should only have feature version number in URL
• 9166ba3: 8272973: Incorrect compile command used by TestIllegalArrayCopyBeforeInfiniteLoop
• 49b2789: 8262751: RenderPipelineState assertion error in J2DDemo
• a3308af: 8272836: Limit run time for java/lang/invoke/LFCaching tests
• c4c76e2: 8272811: Document the effects of building with _GNU_SOURCE in os_posix.hpp
• 673ce7e: 8272873: C2: Inlining should not depend on absolute call site counts
• 7212561: 8267188: gc/stringdedup/TestStringDeduplicationInterned.java fails with Shenandoah
• e36cbd8: 8242847: G1 should not clear mark bitmaps with no marks
• 2ef6871: 8272447: Remove 'native' ranked Mutex
• 63e062f: 8236176: Parallel GC SplitInfo comment should be updated for shadow regions
• ... and 9 more: https://git.openjdk.java.net/jdk/compare/f608e81ad8309a001b8a92563a93b8adee1ce2b8...master

Your commit was automatically rebased without conflicts.

[openjdk]

@albertnetymk Pushed as commit 11c9fd8.

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