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  1. JDK
  2. JDK-8226941

Improvements for the Debugging on Demand capabilities

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    • Type: Task
    • Status: Open
    • Priority: P3
    • Resolution: Unresolved
    • Affects Version/s: 13, 14
    • Fix Version/s: tbd
    • Component/s: core-svc
    • Labels:
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      Description

      In JDK12, SAP has contributed a feature called "Delayed starting of debugging via jcmd". See JDK-8214892. It adds the capability to start a JVM with the JDWP agent loaded but debugging not yet enabled. The user can later on start the actual debugging which will open up a port for the debugger to connect.

      This feature had been pushed to the JDK without a broader discussion of the overall "Debugging on Demand" feature, so it was decided to hide the feature for now. See JDK-8226608. There are a few edges that have to be addressed such as:
      - naming of commands and options
      - usability (e.g. allow later configuration of debugging transport parameters such as port, server/client mode etc.)
      - consider adding methods to start the debugging agent to the com.sun.tools.attach.VirtualMachine interface
      - performance of the VM with debugging agent loaded but debugging not enabled

      This task shall collect subtasks to address these points.

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              Assignee:
              clanger Christoph Langer
              Reporter:
              clanger Christoph Langer
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                Created:
                Updated: