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diff --git a/ace/Trace.h b/ace/Trace.h
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+/* -*- C++ -*- */
+// $Id$
+
+
+// ============================================================================
+//
+// = LIBRARY
+//    ace
+// 
+// = FILENAME
+//    Trace.h
+//
+// = AUTHOR
+//    Doug Schmidt 
+// 
+// ============================================================================
+
+#if !defined (ACE_TRACE_H)
+#define ACE_TRACE_H
+
+class ACE_Export ACE_Trace
+  // = TITLE
+  //     A C++ trace facility that keeps track of which methods are
+  //     entered and exited.
+  //
+  // = DESCRIPTION
+  //     This class uses C++ constructors and destructors to automate
+  //     the ACE_Trace nesting.  In addition, thread-specific storage
+  //     is used to enable multiple threads to work correctly.
+{
+public:
+  // = Initialization and termination methods.
+
+  ACE_Trace (const char *n, int line = 0, const char *file = "");
+  // Perform the first part of the trace, which prints out the string
+  // N, the LINE, and the ACE_FILE as the function is entered.
+
+  ~ACE_Trace (void);
+  // Perform the second part of the trace, which prints out the NAME
+  // as the function is exited.
+
+  // = Control the tracing level.
+  static void start_tracing (void);
+  // Enable the tracing facility.
+
+  static void stop_tracing (void);
+  // Disable the tracing facility. 
+
+  static void set_nesting_indent (int indent);
+  // Change the nesting indentation level. 
+
+  void dump (void) const;
+  // Dump the state of an object.
+
+private:
+  // Keeps track of how deeply the call stack is nested (this is
+  // maintained in thread-specific storage to ensure correctness in
+  // multiple threads of control.
+
+  const char *name_;
+  // Name of the method we are in.
+
+  static int nesting_indent_;
+  // Keeps track of how far to indent per trace call.
+  
+  static int enable_tracing_;
+  // Is tracing enabled?
+
+  // Default values.
+  enum 
+  {
+    DEFAULT_INDENT  = 3,
+    DEFAULT_TRACING = 1
+  };
+};
+
+#endif /* ACE_TRACE_H */