RFR: 7904105: intermittent test failure in CleanupDirTests.agentvm.conc

[Christian Stein]

On Tue, 28 Oct 2025 03:12:34 GMT, Vladimir Petko <vpetko at openjdk.org> wrote:

> jtharness does not synchronize calls to Observer. Synchronized keyword needs to be added when processing shared state.

This change looks good-enough for the time being.

As @jaikiran said, there's potential to address this in a more fundamental way, but adding those three `synchronized` modifiers a) doesn't hurt, b) seems to address the flaky test issue, and c) doesn't prevent future improvements.

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Marked as reviewed by cstein (Reviewer).

PR Review: https://git.openjdk.org/jtreg/pull/297#pullrequestreview-3530334046