JDK-8223355: Redundant output by javadoc

[jonathan-gibbons]

This change addresses a bug that was observed while playing with small demo API: some files may be generated twice.

The fix is to build a single set of the files to be generated.

Note: this bug also affected the generation of the main JDK API docs. According to the log file, before the fix we were generating 14812 files; now, we are generating only 10146 files! That's a drop of 4466 files or over 30%!

---

Progress

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

Issue

• JDK-8223355: Redundant output by javadoc

Reviewers

• Hannes Wallnöfer (@hns - Reviewer)

Download

$ git fetch https://git.openjdk.java.net/jdk pull/2652/head:pull/2652
$ git checkout pull/2652

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[openjdk]

@jonathan-gibbons The following label will be automatically applied to this pull request:

• javadoc

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[mlbridge]

Webrevs

• 01: Full - Incremental (186993e)
• 00: Full (5a20e8e)

[liach]

Just curious, does this bug affect users who specify all files individually or users who just specify a directory without detailing selection rules for classes or packages?

[jonathan-gibbons]

Just curious, does this bug affect users who specify all files individually or users who just specify a directory without detailing selection rules for classes or packages?

Somewhat surprisingly, this happens in all the following cases:

• specify a module on the module source path (--module-source-path path --module m)
• specify a module on the source path (--source-path path --module m)
• specify files on the command line ($(find path -name \*.java))

It does not occur when specifying a package on the source path:

• specify a module on the source path (--source-path path p)

[hns]

That was quite the oversight. Kudos for spotting this!

[hns]

I guess this is to prevent duplicate output. It could probably have been solved by printing the HTML file's whole path (docletWriter.filename just contains the base name), or including the destination path. But I'm not convinced we need to generate a message for each and every file we copy, so it's probably fine as it is.

[hns]

Please ignore that comment, I just saw there's already a message with the full path.

[jonathan-gibbons]

FWIW, based on other recent experiences, I think there is the potential to have more versatile control of which messages to suppress. -quiet just does everything. But this is another discussion.

[openjdk]

@jonathan-gibbons 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:

8223355: Redundant output by javadoc

Reviewed-by: hannesw

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 62 new commits pushed to the master branch:

• 26c1db9: 8254239: G1ConcurrentMark.hpp unnecessarily disables MSVC++ warning 4522.
• 0c21dd0: 6206189: Graphics2D.clip specifies incorrectly that a 'null' is a valid value for this method
• 2b55501: 8261949: fileStream::readln returns incorrect line string
• 539c80b: 8261702: ClhsdbFindPC can fail due to PointerFinder incorrectly thinking an address is in a .so
• 564011c: 8261290: Improve error message for NumberFormatException on null input
• 18188c2: 8261692: Bugs in clhsdb history support
• 0825bc5: 8261929: ClhsdbFindPC fails with java.lang.RuntimeException: 'In java stack' missing from stdout/stderr
• c2509ea: 8261857: serviceability/sa/ClhsdbPrintAll.java failed with "Test ERROR java.lang.RuntimeException: 'cannot be cast to' found in stdout"
• 2b00367: 8261350: Create implementation for NSAccessibilityCheckBox protocol peer
• 5a25cea: 8261998: Remove unused shared entry support from utilities/hashtable
• ... and 52 more: https://git.openjdk.java.net/jdk/compare/d547e1a84723e94813fc600c884c9cfee0ed8f57...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.

[jonathan-gibbons]

/integrate

[openjdk]

@jonathan-gibbons Since your change was applied there have been 89 commits pushed to the master branch:

• d2b9c22: 8262011: [JVMCI] allow printing to tty from unattached libgraal thread
• 0257caa: 8261397: Try Catch Method Failing to Work When Dividing An Integer By 0
• 8a2f589: 8260637: Shenandoah: assert(_base == Tuple) failure during C2 compilation
• 67762de: 8262197: JDK-8242032 uses wrong contains_reference() in assertion code
• 9d9bedd: 8262094: Handshake timeout scaled wrong
• 29c7263: 8252709: Enable JVMCI when building linux-aarch64 at Oracle
• 12f6ba0: 8262087: Use atomic boolean type in G1FullGCAdjustTask
• a5c4b9a: 8260223: Handling of unnamed package in javadoc pages
• 8cfea7c: 8261921: ClassListParser::current should be used only by main thread
• 991f7c1: 8210373: Deadlock in libj2gss.so when loading "j2gss" and "net" libraries in parallel.
• ... and 79 more: https://git.openjdk.java.net/jdk/compare/d547e1a84723e94813fc600c884c9cfee0ed8f57...master

Your commit was automatically rebased without conflicts.

Pushed as commit 53b1545.

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