8268647: Generation::expand_and_allocate has unused "parallel" argument

[kimbarrett]

Please review this simplification of the Generation class and the classes
derived from it. There are no callers of expand_and_allocate that pass the
third argument explicitly, so its value is always the default (false) value.

This change removes the argument and updates the two implementations of this
virtual function accordingly.

[The "parallel" argument is probably a leftover from CMS support.]

Testing:
mach5 tier1.

---

Progress

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

Issue

• JDK-8268647: Generation::expand_and_allocate has unused "parallel" argument

Reviewers

• Albert Mingkun Yang (@albertnetymk - Committer) ⚠️ Review applies to 9de6004
• Thomas Schatzl (@tschatzl - Reviewer) ⚠️ Review applies to 9de6004

Reviewing

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[mlbridge]

Webrevs

• 01: Full - Incremental (a7d107a5)
• 00: Full (9de6004a)

[tschatzl]

Lgtm. I suggested a small whitespace change.

[tschatzl]

Suggested change

	HeapWord* DefNewGeneration::expand_and_allocate(size_t size, bool is_tlab) {
	HeapWord* DefNewGeneration::expand_and_allocate(size_t size, bool is_tlab) {

[openjdk]

@kimbarrett 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:

8268647: Generation::expand_and_allocate has unused "parallel" argument

Reviewed-by: ayang, tschatzl

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 19 new commits pushed to the master branch:

• 0b09129: 8268620: InfiniteLoopException test may fail on x86 platforms
• d384093: 8268125: ZGC: Clone oop array gets wrong acopy stub
• 9f3c7e7: 8238649: Call new Win32 API SetThreadDescription in os::set_native_thread_name
• 2e70bc3: 8268626: Remove native pre-jdk9 support for jtreg failure handler
• e59acd9: 8268699: Shenandoah: Add test for JDK-8268127
• 17295b1: Merge
• b318535: 8267579: Thread::cooked_allocated_bytes() hits assert(left >= right) failed: avoid underflow
• fe48ea9: 8268342: java/foreign/channels/TestAsyncSocketChannels.java fails with "IllegalStateException: This segment is already closed"
• 6171ae4: 8268630: ProblemList serviceability/jvmti/CompiledMethodLoad/Zombie.java on linux-aarch64
• 01054e6: 8268470: CDS dynamic dump asserts with JFR RecordingStream
• ... and 9 more: https://git.openjdk.java.net/jdk/compare/c0b4407d09a7bf9f15553dc5344b1e354b150d57...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]

Thanks @albertnetymk and @tschatzl for reviews.

[kimbarrett]

/integrate

[openjdk]

Going to push as commit 00e33a4.
Since your change was applied there have been 19 commits pushed to the master branch:

• 0b09129: 8268620: InfiniteLoopException test may fail on x86 platforms
• d384093: 8268125: ZGC: Clone oop array gets wrong acopy stub
• 9f3c7e7: 8238649: Call new Win32 API SetThreadDescription in os::set_native_thread_name
• 2e70bc3: 8268626: Remove native pre-jdk9 support for jtreg failure handler
• e59acd9: 8268699: Shenandoah: Add test for JDK-8268127
• 17295b1: Merge
• b318535: 8267579: Thread::cooked_allocated_bytes() hits assert(left >= right) failed: avoid underflow
• fe48ea9: 8268342: java/foreign/channels/TestAsyncSocketChannels.java fails with "IllegalStateException: This segment is already closed"
• 6171ae4: 8268630: ProblemList serviceability/jvmti/CompiledMethodLoad/Zombie.java on linux-aarch64
• 01054e6: 8268470: CDS dynamic dump asserts with JFR RecordingStream
• ... and 9 more: https://git.openjdk.java.net/jdk/compare/c0b4407d09a7bf9f15553dc5344b1e354b150d57...master

Your commit was automatically rebased without conflicts.

[openjdk]

@kimbarrett Pushed as commit 00e33a4.

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