src/hotspot/share/runtime/thread.hpp

*** 787,797 ****
  
   public:
    volatile intptr_t _Stalled;
    volatile int _TypeTag;
    ParkEvent * _ParkEvent;                     // for synchronized()
-   ParkEvent * _SleepEvent;                    // for Thread.sleep
    ParkEvent * _MuxEvent;                      // for low-level muxAcquire-muxRelease
    int NativeSyncRecursion;                    // diagnostic
  
    volatile int _OnTrap;                       // Resume-at IP delta
    jint _hashStateW;                           // Marsaglia Shift-XOR thread-local RNG
--- 787,796 ----
*** 2053,2062 ****
--- 2052,2065 ----
    InstanceKlass* class_to_be_initialized() const;
  
  private:
    InstanceKlass* _class_to_be_initialized;
  
+   // java.lang.Thread.sleep support
+ public:
+   ParkEvent * _SleepEvent;
+   bool sleep(jlong millis);
  };
  
  // Inline implementation of JavaThread::current
  inline JavaThread* JavaThread::current() {
    Thread* thread = Thread::current();