src/share/vm/runtime/thread.hpp

rev 1962 : 6814943: getcpool001 catches more than one JvmtiThreadState problem
Summary: Mark field volatile, use membars, and change access order to close race
Reviewed-by:

*** 785,795 ****
    //
    //   _not_terminated => _thread_exiting => _thread_terminated
    //
    // _vm_exited is a special value to cover the case of a JavaThread
    // executing native code after the VM itself is terminated.
!   TerminatedTypes       _terminated;
    // suspend/resume support
    volatile bool         _suspend_equivalent;     // Suspend equivalent condition
    jint                  _in_deopt_handler;       // count of deoptimization
                                                   // handlers thread is in
    volatile bool         _doing_unsafe_access;    // Thread may fault due to unsafe access
--- 785,795 ----
    //
    //   _not_terminated => _thread_exiting => _thread_terminated
    //
    // _vm_exited is a special value to cover the case of a JavaThread
    // executing native code after the VM itself is terminated.
!   volatile TerminatedTypes _terminated;
    // suspend/resume support
    volatile bool         _suspend_equivalent;     // Suspend equivalent condition
    jint                  _in_deopt_handler;       // count of deoptimization
                                                   // handlers thread is in
    volatile bool         _doing_unsafe_access;    // Thread may fault due to unsafe access