8386334: JdepsTask keeps --system files open

[dbalek]

When used with the --system option to target a different modular JDK image, JdepsTask keeps both lib/jrt-fs.jar and lib/modules open after it completes. This is the jdeps counterpart of the issue previously seen with JavacTask in JDK-8357249.

For an alternate java.home, JdepsConfiguration.SystemModuleFinder creates a new jrt:/ file system using the target image. That file system and the URL class loader used by its provider, are not closed when the jdeps configuration is closed.

The proposal is to modify JdepsConfiguration.close() to also close the associated SystemModuleFinder, ensuring that these resources are released after the task finishes.

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Issue

• JDK-8386334: JdepsTask keeps --system files open (Bug - P4)

Reviewers

• Vicente Romero (@vicente-romero-oracle - Reviewer)

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8386334: JdepsTask keeps --system files open

Reviewed-by: vromero

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At the time when this comment was updated there had been 24 new commits pushed to the master branch:

• 1251526: 8386287: GenShen: assert(starts_object(card_index)) failed: Can't get last start because no object starts here
• b123df7: 8385119: Unify boolean value normalization
• e965fcf: 8386124: Test serviceability/sa/TestG1HeapRegion.java failed: Address of G1HeapRegion does not match
• ... and 21 more: https://git.openjdk.org/jdk/compare/55a53f945f68a5b6c9657cec34bc1b037407b615...master

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• 03: Full - Incremental (c3ac5f1d)
• 02: Full - Incremental (6d9bc168)
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• 00: Full (b54caba2)

[liach]

Ideally each close should be wrapped in try-catch but I guess it's okay to leave as is

[vicente-romero-oracle]

lgtm