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  1. JDK
  2. JDK-8230501

Class data support for hidden classes

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    Description

      One feature of `Unsafe::defineAnonymousClass` is constant pool patching that is used by LambdaForm and few external libraries [1].

      One idea is to allow a dynamically generated class be defined with a class data which can only be obtained by a full-power lookup (e.g. `Lookup::classData` method).

      [1] http://jigsaw-dev.1059479.n5.nabble.com/Remove-sun-misc-Unsafe-defineAnonymousClass-td5715601.html

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          csr for

          CSR - null JDK-8256214 Class data support for hidden classes

          • P3 - Major loss of function.
          • Closed
          is blocked by

          Bug - A problem which impairs or prevents the functions of the product. JDK-8243492 SIGSEGV when getting class data via condy from a virtual method

          • P2 - Crashes, loss of data, severe memory leak.
          • Resolved
          relates to

          Sub-task - The sub-task of the issue JDK-8238693 Two JCK api/java_lang/invoke/MethodHandles/Lookup tests fail in valhalla nestmates repo

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

          Enhancement - null JDK-8243287 Removal of Unsafe::defineAnonymousClass

          • P3 - Major loss of function.
          • Resolved

          Enhancement - null JDK-8171335 MethodHandle.Lookup functionality to define a nestmate class

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

          Enhancement - null JDK-8242451 ensure semantics of non-capturing lambdas are preserved independent of execution mode

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

          Enhancement - null JDK-8209679 JVM support for "classData"

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

          Commit Commit openjdk/jdk/4356469a

          Review Review openjdk/jdk/1171

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              mchung Mandy Chung
              mchung Mandy Chung
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                Created:
                Updated:
                Resolved: