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  1. JDK
  2. JDK-8201556

Disallow reading oops in ClassLoaderData if unloading

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Details

    • Enhancement
    • Resolution: Fixed
    • P3
    • 11
    • 11
    • hotspot
    • None
    • b11

    Description

      If the ClassLoaderData is unloading, the oops in the ClassLoaderData like _class_loader and the ones in _handles should not be loaded because they will not be valid for concurrent GCs like ZGC.

      For concurrent GCs like ZGC, the _class_loader oop should be read with the OopHandle resolve barrier also.

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          relates to

          Enhancement - null JDK-8201537 Remove is_alive closure from Klass::is_loader_alive()

          • P3 - Major loss of function.
          • Resolved

          Enhancement - null JDK-8200555 OopHandle should use Access API

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

          Enhancement - null JDK-8324514 ClassLoaderData::print_on should print address of class loader

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

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              coleenp Coleen Phillimore
              coleenp Coleen Phillimore
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              Dates

                Created:
                Updated:
                Resolved: