8325179: Race in BasicDirectoryModel.validateFileCache

[TheRealMDoerr]

Clean backport of JDK-8325179 after JDK-8323670 is integrated.

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Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• JDK-8325179 needs maintainer approval
• Commit message must refer to an issue
• JDK-8238169 needs maintainer approval

Issues

• JDK-8325179: Race in BasicDirectoryModel.validateFileCache (Bug - P3)
• JDK-8238169: BasicDirectoryModel getDirectories and DoChangeContents.run can deadlock (Bug - P4)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk17u-dev.git pull/2539/head:pull/2539
$ git checkout pull/2539

Update a local copy of the PR:
$ git checkout pull/2539
$ git pull https://git.openjdk.org/jdk17u-dev.git pull/2539/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 2539

View PR using the GUI difftool:
$ git pr show -t 2539

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk17u-dev/pull/2539.diff

[bridgekeeper]

👋 Welcome back mdoerr! 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]

❗ 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 issues from the original commit.

[TheRealMDoerr]

Continued here: #2558