src/hotspot/share/runtime/javaThread.hpp

@@ -146,10 +146,11 @@
    Method*       _callee_target;
  
    // Used to pass back results to the interpreter or generated code running Java code.
    oop           _vm_result_oop;       // oop result is GC-preserved
    Metadata*     _vm_result_metadata;  // non-oop result
+   oop           _return_buffered_value; // buffered value being returned
  
    ObjectMonitor* volatile _current_pending_monitor;     // ObjectMonitor this thread is waiting to lock
    bool           _current_pending_monitor_is_from_java; // locking is from Java code
    ObjectMonitor* volatile _current_waiting_monitor;     // ObjectMonitor on which this thread called Object.wait()
  

@@ -769,10 +770,13 @@
    oop  vm_result_oop() const                     { return _vm_result_oop; }
    void set_vm_result_oop(oop x)                  { _vm_result_oop   = x; }
  
    void set_vm_result_metadata(Metadata* x)       { _vm_result_metadata = x; }
  
+   oop return_buffered_value() const              { return _return_buffered_value; }
+   void set_return_buffered_value(oop val)        { _return_buffered_value = val; }
+ 
    // Is thread in scope of an InternalOOMEMark?
    bool is_in_internal_oome_mark() const          { return _is_in_internal_oome_mark; }
    void set_is_in_internal_oome_mark(bool b)      { _is_in_internal_oome_mark = b;    }
  
  #if INCLUDE_JVMCI

@@ -831,10 +835,11 @@
      return byte_offset_of(JavaThread, _anchor);
    }
    static ByteSize callee_target_offset()         { return byte_offset_of(JavaThread, _callee_target); }
    static ByteSize vm_result_oop_offset()         { return byte_offset_of(JavaThread, _vm_result_oop); }
    static ByteSize vm_result_metadata_offset()    { return byte_offset_of(JavaThread, _vm_result_metadata); }
+   static ByteSize return_buffered_value_offset() { return byte_offset_of(JavaThread, _return_buffered_value); }
    static ByteSize thread_state_offset()          { return byte_offset_of(JavaThread, _thread_state); }
    static ByteSize saved_exception_pc_offset()    { return byte_offset_of(JavaThread, _saved_exception_pc); }
    static ByteSize osthread_offset()              { return byte_offset_of(JavaThread, _osthread); }
  #if INCLUDE_JVMCI
    static ByteSize pending_deoptimization_offset() { return byte_offset_of(JavaThread, _pending_deoptimization); }