8348205: Improve cutover time selection when building available currencies set

[justin-curtis-lu]

Please review this PR which improves the time measurement for cut-over time comparisons when building the available set of currencies in java.util.Currency. Currently, a new time was measured for each special case currency. This PR updates the behavior to use the same time for all such cases

---

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

Issues

• JDK-8348205: Improve cutover time selection when building available currencies set (Bug - P4)
• JDK-8348216: Improve cutover time selection when building available currencies set (CSR) (Withdrawn)

Reviewers

• Naoto Sato (@naotoj - Reviewer)
• Roger Riggs (@RogerRiggs - Reviewer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk.git pull/23309/head:pull/23309
$ git checkout pull/23309

Update a local copy of the PR:
$ git checkout pull/23309
$ git pull https://git.openjdk.org/jdk.git pull/23309/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 23309

View PR using the GUI difftool:
$ git pr show -t 23309

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk/pull/23309.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back jlu! 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]

@justin-curtis-lu 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:

8348205: Improve cutover time selection when building available currencies set

Reviewed-by: naoto, rriggs

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 66 new commits pushed to the master branch:

• 8cc1304: 8287788: Implement a better allocator for downcalls
• 039e73f: 8346736: Java Security Standard Algorithm Names spec should include key algorithm names
• aba60a9: 8189441: Define algorithm names for keys derived from KeyAgreement
• 03106eb: 8344119: CUPSPrinter does not respect PostScript printer definition specification in case of reading ImageableArea values from PPD files
• ad01dfb: 8346920: Serial: Support allocation in old generation when heap is almost full
• 1d8ccb8: 8342465: Improve API documentation for java.lang.classfile
• 7d6055a: 8348429: Update cross-compilation devkits to Fedora 41/gcc 13.2
• f1e0797: 8348586: Optionally silence make warnings about non-control variables
• ffeb9b5: 8342807: Update links in java.base to use https://
• afcc2b0: 8348562: ZGC: segmentation fault due to missing node type check in barrier elision analysis
• ... and 56 more: https://git.openjdk.org/jdk/compare/b720517cb33c2119ec6ed85504bce321de748228...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.

[openjdk]

@justin-curtis-lu The following labels will be automatically applied to this pull request:

• core-libs
• i18n

When this pull request is ready to be reviewed, an "RFR" email will be sent to the corresponding mailing lists. If you would like to change these labels, use the /label pull request command.

[mlbridge]

Webrevs

• 01: Full - Incremental (c49fb581)
• 00: Full (9305f954)

[naotoj]

Looks good. Please update the copyright year to 2025

[naotoj]

The comment is correct, but it might not be necessary, as it would not be significant unless one knows the background

[justin-curtis-lu]

Comment removed and year bumped.

[RogerRiggs]

lgtm

[justin-curtis-lu]

Thanks for reviewing.
/integrate

[openjdk]

Going to push as commit a224f12.
Since your change was applied there have been 79 commits pushed to the master branch:

• 8103256: 8348348: Remove unnecessary #ifdef STATIC_BUILD around DEF_STATIC_JNI_OnLoad from zip_util.c
• fb066ca: 8347272: [ubsan] JvmLauncher.cpp:262:52: runtime error: applying non-zero offset 40 to null pointer
• 5fec999: 8339668: Parallel: Adopt PartialArrayState to consolidate marking stack in Full GC
• 2bef5b4: 8348323: Corrupted timezone string in JVM crash log
• 3a8680e: 8347058: When automatically translating the page to pt-br, all CSS styling disappears
• a4942a2: 8348286: [AIX] clang 17 introduces new warning Wtentative-Definitions which produces Build errors
• 558255a: 8328919: Add BodyHandlers / BodySubscribers methods to handle excessive server input
• 1f74caa: 8348401: [IR Framework] PrintTimes should not require verbose
• f71541c: 8344976: Remove the jmx.invoke.getters compatibility property
• 2537a05: 8348384: RISC-V: Disable auto-enable Vector on buggy kernels
• ... and 69 more: https://git.openjdk.org/jdk/compare/b720517cb33c2119ec6ed85504bce321de748228...master

Your commit was automatically rebased without conflicts.

[openjdk]

@justin-curtis-lu Pushed as commit a224f12.

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