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diff --git a/ACE/examples/NT_Service/ntsvc.h b/ACE/examples/NT_Service/ntsvc.h
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+++ b/ACE/examples/NT_Service/ntsvc.h
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+/* -*- C++ -*- */
+// $Id$
+
+// ============================================================================
+//
+// = LIBRARY
+//    examples/NT_Service
+//
+// = FILENAME
+//    ntsvc.h
+//
+// = DESCRIPTION
+//      This is the definition of the sample NT Service class.  This example
+//      only runs on Win32 platforms.
+//
+// = AUTHOR
+//    Gonzalo Diethelm and Steve Huston
+//
+// ============================================================================
+
+#ifndef NTSVC_H_
+#define NTSVC_H_
+
+#include "ace/Event_Handler.h"
+#include "ace/NT_Service.h"
+#include "ace/Singleton.h"
+#include "ace/Mutex.h"
+
+class Service : public ACE_NT_Service
+{
+public:
+  Service (void);
+
+  ~Service (void);
+
+  virtual void handle_control (DWORD control_code);
+  // We override <handle_control> because it handles stop requests
+  // privately.
+
+  virtual int  handle_exception (ACE_HANDLE h);
+  // We override <handle_exception> so a 'stop' control code can pop
+  // the reactor off of its wait.
+
+  virtual int svc (void);
+  // This is a virtual method inherited from ACE_NT_Service.
+
+  virtual int handle_timeout (const ACE_Time_Value& tv,
+                              const void *arg = 0);
+  // Where the real work is done:
+
+private:
+  typedef ACE_NT_Service inherited;
+
+private:
+  int stop_;
+};
+
+// Define a singleton class as a way to insure that there's only one
+// Service instance in the program, and to protect against access from
+// multiple threads.  The first reference to it at runtime creates it,
+// and the ACE_Object_Manager deletes it at run-down.
+
+typedef ACE_Singleton<Service, ACE_Mutex> SERVICE;
+
+#endif /* #ifndef NTSVC_H_ */