Kevin Lee fa2f8b87b8 [2.0.x] fix: Fixes three test-classloader / jar-handle leaks in the sbt server JVM (#9485)
2 independent, pre-existing retention bugs kept the classloader of a
finished in-process test run -- and the open jar handles it holds -- alive
for the rest of the server session.

- JUnitXmlTestsListener: testSuite is an InheritableThreadLocal, so
  threads spawned during a run (e.g. async-framework pool workers) inherit
  a copy of the suite reference that remove() cannot reach.

- ClassLoaderCache: loaders evicted from delegate by clearExpiredLoaders
  are unreachable from the map and never enqueued on the ReferenceQueue, so
  neither clear()/close() nor the cleanup thread could ever close them.

SuiteResult now documents the retention hazard on throwables. Adds
deterministic, cross-platform tests for all three severed chains.
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sbt

sbt is a build tool for Scala, Java, and more.

For general documentation, see https://www.scala-sbt.org/.

sbt 2.x

This is the 2.x series of sbt. The source code of sbt is split across several GitHub repositories, including this one.

  • sbt/io hosts sbt.io module.
  • sbt/zinc hosts Zinc, an incremental compiler for Scala.
  • sbt/sbt, this repository hosts modules that implement the build tool.
  • Setup: Describes getting started with the latest binary release.
  • FAQ: Explains how to get help and more.
  • sbt/sbt-zero-seven: hosts sbt 0.7.7 and earlier versions

Issues and Pull Requests

Please read CONTRIBUTING carefully before opening a GitHub Issue or a pull request.

If you're looking for an idea for a contribution, issues labeled with good first issue or help wanted might be good starting points.

If you would like to ask questions about sbt, there's sbt channel on Scala Discord, but it would be good to gather questions on Stackoverflow.

license

See LICENSE.

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