8265064: Move clearing and setting of members into helpers in ReservedSpace

[kstefanj]

Currently there are a few places in ReservedSpace that updates a set of members directly during initialization. This could be refactored into helper functions to improve readability and also to pave way for some further cleanups.

This is one of a few cleanups I plan to do to enable a clean implementation of:
JDK-8261527: Record page size used for underlying mapping in ReservedSpace

Testing
Mach5 tier1 and tier2.

---

Progress

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Issue

• JDK-8265064: Move clearing and setting of members into helpers in ReservedSpace

Reviewers

• Thomas Schatzl (@tschatzl - Reviewer)
• Ivan Walulya (@walulyai - Committer)

Reviewing

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/label remove hotspot-runtime
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[mlbridge]

Webrevs

• 01: Full - Incremental (cd9f0816)
• 00: Full (de6e48b9)

[tschatzl]

This method could call initialize_members() with the appropriate argument values, couldn't it?

[kstefanj]

Yes. I tried that as well, but then I called it set_members() because calling initialize_members() from clear_members() felt a bit backwards. The reason I didn't go with this approach was that I preferred the name initialize_members(). But I'll make the change and call initialize from clear, it's pretty obvious what is going on.

[tschatzl]

Lgtm.

[openjdk]

@kstefanj 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:

8265064: Move clearing and setting of members into helpers in ReservedSpace

Reviewed-by: tschatzl, iwalulya

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At the time when this comment was updated there had been 16 new commits pushed to the master branch:

• 008fc75: 8264224: Add macosx-aarch64 to Oracle build configurations
• f4e6395: 8264190: Harden TLS interop tests
• 18bec9c: 8265084: [BACKOUT] 8264954: unified handling for VectorMask object re-materialization during de-optimization
• 9dd9625: 8263763: Synthetic constructor parameters of enum are not considered for annotation indices
• 1ee80e0: 8261355: No data buffering in SunPKCS11 Cipher encryption when the underlying mechanism has no padding
• d84a7e5: 8264124: Update MXBean specification and implementation to extend mapping of CompositeType to records
• 714ae54: 8258788: incorrect response to change in window insets [lanai]
• f479437: 8265082: test/hotspot/jtreg/gc/g1/TestG1SkipCompaction.java fails validate-source
• 27f4b27: 8264623: Change to Xcode 12.4 for building on Macos at Oracle
• 7c20d97: 8265052: Break circular include dependency in objArrayOop.inline.hpp
• ... and 6 more: https://git.openjdk.java.net/jdk/compare/cb2806db4ed188a53161d13a0d7f882b1afe00ec...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.

[walulyai]

looks good

[kstefanj]

Thanks @tschatzl and @walulyai for the reviews.

/integrate

[openjdk]

@kstefanj Since your change was applied there have been 20 commits pushed to the master branch:

• 7006070: 8265061: Simplify MethodHandleNatives::canBeCalledVirtual
• 1935655: 8264957: Cleanup unused array Type::dual_type
• 954b9a1: 8264795: IGV: Upgrade NetBeans platform
• f2f7aa3: 8262291: Refactor reserve_memory_special_huge_tlbfs
• 008fc75: 8264224: Add macosx-aarch64 to Oracle build configurations
• f4e6395: 8264190: Harden TLS interop tests
• 18bec9c: 8265084: [BACKOUT] 8264954: unified handling for VectorMask object re-materialization during de-optimization
• 9dd9625: 8263763: Synthetic constructor parameters of enum are not considered for annotation indices
• 1ee80e0: 8261355: No data buffering in SunPKCS11 Cipher encryption when the underlying mechanism has no padding
• d84a7e5: 8264124: Update MXBean specification and implementation to extend mapping of CompositeType to records
• ... and 10 more: https://git.openjdk.java.net/jdk/compare/cb2806db4ed188a53161d13a0d7f882b1afe00ec...master

Your commit was automatically rebased without conflicts.

Pushed as commit a4f644e.

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