8317678: Fix up hashCode() for ZipFile.Source.Key

[rm-gh-8]

Backporting JDK-8317678: Fix up hashCode() for ZipFile.Source.Key. Fixes the hashCode implementation and adds a new benchmark test. Ran GHA Sanity Checks (passed), related zip tests and new benchmark test (passed). Patch is clean..

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Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8317678 needs maintainer approval

Issue

• JDK-8317678: Fix up hashCode() for ZipFile.Source.Key (Bug - P3 - Requested)

Reviewing

Using git

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$ git fetch https://git.openjdk.org/jdk21u-dev.git pull/2463/head:pull/2463
$ git checkout pull/2463

Update a local copy of the PR:
$ git checkout pull/2463
$ git pull https://git.openjdk.org/jdk21u-dev.git pull/2463/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 2463

View PR using the GUI difftool:
$ git pr show -t 2463

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk21u-dev/pull/2463.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

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[openjdk]

❗ This change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[openjdk]

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

[openjdk]

⚠️ @rm-gh-8 This change is now ready for you to apply for maintainer approval. This can be done directly in each associated issue or by using the /approval command.

[mlbridge]

Webrevs

• 00: Full (adaae163)

[rm-gh-8]

/approval request for backport of JDK-8317678: Fix up hashCode() for ZipFile.Source.Key.

Ran the related tests on linux-x64, linux-aarch64, macos-aarch64 and windows-x64:

(All Passed) - make test TEST=test/jdk/java/util/Calendar

Ran the new benchmark tests on linux-x64, linux-aarch64, macos-aarch64 and windows-x64:

(Successful) java -jar build/*/images/test/micro/benchmarks.jar java.util.zip.ZipFileOpen

Results are attached.
linux-aarch64-microbench-test.log
linux-aarch64-specific-test.log
linux-x64-microbench-test.log
linux-x64-specific-test.log
macos-aarch64-microbench-test.log
macos-aarch64-specific-test.log
windows-x64-microbench-test.log
windows-x64-specific-test.log

[openjdk]

@rm-gh-8
8317678: The approval request has been updated successfully.