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  1. JDK
  2. JDK-8288139 JavaThread touches oop after GC barrier is detached
  3. JDK-8288497

add support for JavaThread::is_oop_safe()

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    • Resolution: Fixed
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    • 17, 19
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    • b28

        The JavaThread::_terminated field exists for tracking a JavaThread's
        journey thru the thread exit process. The detaching of the GC barrier
        from a JavaThread during the exit process is turning out to be an
        important state change that needs visibility in order to have correctly
        functioning code. Adding JavaThread::is_oop_safe() and
        the necessary associated infrastructure provides this visibility.

        This comment change from class JavaThread:

        @@ -914,7 +915,7 @@ class JavaThread: public Thread {
          private:
           // In general a JavaThread's _terminated field transitions as follows:
           //
        - // _not_terminated => _thread_exiting => _thread_terminated
        + // _not_terminated => _thread_exiting => _thread_gc_barrier_detached => _thread_terminated

        shows where the new _thread_gc_barrier_detached value
        fits into the _terminated field transitions.

              dcubed Daniel Daugherty
              dcubed Daniel Daugherty
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