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  1. JDK
  2. JDK-8258471

"search codecache" clhsdb command does not work

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    • Resolved In Build:
      b03

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        Description

        `search codecache` command does not work as following:

        ```
        hsdb> search codecache 0x7fedbd0aec90
        java.lang.RuntimeException: Unable to deduce type of CodeBlob from address 0x00007fedbc85e810 (expected type nmethod, RuntimeStub, SafepointBlob, DeoptimizationBlob, or ExceptionBlob)
                at jdk.hotspot.agent/sun.jvm.hotspot.code.CodeCache.createCodeBlobWrapper(CodeCache.java:177)
                at jdk.hotspot.agent/sun.jvm.hotspot.memory.CodeHeap.iterate(CodeHeap.java:111)
                at jdk.hotspot.agent/sun.jvm.hotspot.code.CodeCache.iterate(CodeCache.java:185)
                at jdk.hotspot.agent/sun.jvm.hotspot.CommandProcessor$40.doit(CommandProcessor.java:1535)
                at jdk.hotspot.agent/sun.jvm.hotspot.CommandProcessor.executeCommand(CommandProcessor.java:2051)
                at jdk.hotspot.agent/sun.jvm.hotspot.CommandProcessor.executeCommand(CommandProcessor.java:2021)
                at jdk.hotspot.agent/sun.jvm.hotspot.CommandProcessor.run(CommandProcessor.java:1901)
                at jdk.hotspot.agent/sun.jvm.hotspot.CLHSDB.run(CLHSDB.java:99)
                at jdk.hotspot.agent/sun.jvm.hotspot.CLHSDB.main(CLHSDB.java:40)
                at jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.runCLHSDB(SALauncher.java:280)
                at jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.main(SALauncher.java:483)
        ```

        I checked the Object which points 0x7fedbd0aec90, it was `VtableBlob`. It has been introduced in JDK-8199406, but it did not change SA code.

        SA should support `VtableBlob`.

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                Assignee:
                ysuenaga Yasumasa Suenaga
                Reporter:
                ysuenaga Yasumasa Suenaga
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