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  1. JDK
  2. JDK-8295278

Add parallel class loading tests

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Details

    • Enhancement
    • Resolution: Fixed
    • P4
    • 20
    • 20
    • hotspot
    • b20

    Description

      Support for parallel capable class loaders was added because of problems that customers were having with class loader deadlocks and incorrect ClassCircularityError exceptions for class loaders with non-hierarchical delegation models. Leading to this proposal and code in ClassLoader:

      https://openjdk.org/groups/core-libs/ClassLoad

      At the time, support for parallel class loading was added for non-parallel capable class loaders that release the ClassLoader lock, and a comprehensive set of tests that are not open were added. Also some tests are added to the JCK test suite.

      While working on maintaining compatibility with parallel class loading, it's helpful to have the original problems as test cases to examine. See linked issues.

      Attachments

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. JDK-8295713 runtime/ParallelLoad/SuperWait/SuperWaitTest.java fails intermittently on Windows

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-4670071 java.lang.ClassLoader.loadClassInternal(String) is too restrictive

          • P3 - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. JDK-4699981 ClassCircularityError thrown without reason during class loading

          • P3 - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. JDK-6323123 Due to partial feature #256 code promotion in b51, some tests related to class loading fail

          • P3 - Major loss of function.
          • Closed

          Enhancement - null JDK-8293174 Implement special unlocked parallel class loading handling in Java

          • P3 - Major loss of function.
          • Resolved
          links to

          Commit Commit openjdk/jdk/5d273b9f

          Review Review openjdk/jdk/10587

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              coleenp Coleen Phillimore
              coleenp Coleen Phillimore
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              Dates

                Created:
                Updated:
                Resolved: