RFR: 8281615: Deadlock caused by jdwp agent [v4]

Thu Feb 17 17:38:13 UTC 2022

On Thu, 17 Feb 2022 13:42:13 GMT, Zhengyu Gu <zgu at openjdk.org> wrote:

> `classTrack_activate()` is called inside `debugLoop_run()`, so it looks like that jvmti callback is enabled at the time.

Yes. This is due to the debugger sending a JDWP EventRequest command for CLASS_UNLOAD events. At that point class tracking is activated and the debug agent enables OBJECT_FREE events.

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PR: https://git.openjdk.java.net/jdk/pull/7461