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diff --git a/ACE/ace/Shared_Memory_MM.h b/ACE/ace/Shared_Memory_MM.h
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+++ b/ACE/ace/Shared_Memory_MM.h
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+/* -*- C++ -*- */
+
+//=============================================================================
+/**
+ *  @file    Shared_Memory_MM.h
+ *
+ *  $Id$
+ *
+ *  @author Douglas C. Schmidt <schmidt@cs.wustl.edu>
+ */
+//=============================================================================
+
+
+#ifndef ACE_SHARED_MALLOC_MM_H
+#define ACE_SHARED_MALLOC_MM_H
+#include /**/ "ace/pre.h"
+
+#include "ace/Shared_Memory.h"
+
+#if !defined (ACE_LACKS_PRAGMA_ONCE)
+# pragma once
+#endif /* ACE_LACKS_PRAGMA_ONCE */
+
+#include "ace/Mem_Map.h"
+
+ACE_BEGIN_VERSIONED_NAMESPACE_DECL
+
+/**
+ * @class ACE_Shared_Memory_MM
+ *
+ * @brief Shared memory wrapper based on MMAP.
+ *
+ * This class provides a very simple-minded shared memory manager.  We
+ * strongly recommend that you do NOT use this class.  Instead, please
+ * use @c ACE_Malloc, which has much more powerful capabilities.
+ */
+class ACE_Export ACE_Shared_Memory_MM : public ACE_Shared_Memory
+{
+public:
+  // = Initialization and termination methods.
+  /// Default constructor.
+  ACE_Shared_Memory_MM (void);
+
+  /// Constructor.
+  ACE_Shared_Memory_MM (ACE_HANDLE handle,
+                        size_t length = static_cast<size_t> (-1),
+                        int prot = PROT_RDWR,
+                        int share = ACE_MAP_PRIVATE,
+                        char *addr = 0,
+                        ACE_OFF_T pos = 0);
+
+  /// Constructor.
+  ACE_Shared_Memory_MM (const ACE_TCHAR *file_name,
+                        size_t length = static_cast<size_t> (-1),
+                        int flags = O_RDWR | O_CREAT,
+                        int mode = ACE_DEFAULT_FILE_PERMS,
+                        int prot = PROT_RDWR,
+                        int share = ACE_MAP_SHARED,
+                        char *addr = 0, ACE_OFF_T pos = 0);
+
+  /// Open method.
+  int open (ACE_HANDLE handle,
+            size_t length = static_cast<size_t> (-1),
+            int prot = PROT_RDWR,
+            int share = ACE_MAP_PRIVATE,
+            char *addr = 0,
+            ACE_OFF_T pos = 0);
+
+  /// Open method.
+  int open (const ACE_TCHAR *file_name,
+            size_t length = static_cast<size_t> (-1),
+            int flags = O_RDWR | O_CREAT,
+            int mode = ACE_DEFAULT_FILE_PERMS,
+            int prot = PROT_RDWR,
+            int share = ACE_MAP_SHARED,
+            char *addr = 0,
+            ACE_OFF_T pos = 0);
+
+  /// Return the name of file that is mapped (if any).
+  const ACE_TCHAR *filename (void) const;
+
+  /// Close down the shared memory segment.
+  virtual int close (void);
+
+  /// Remove the shared memory segment and the underlying file.
+  virtual int remove (void);
+
+  // = Allocation and deallocation methods.
+  /// Create a new chuck of memory containing @a size bytes.
+  virtual void *malloc (size_t size = 0);
+
+  /// Free a chuck of memory allocated by
+  /// <ACE_Shared_Memory_MM::malloc>.
+  virtual int free (void *p);
+
+  /// Return the size of the shared memory segment.
+  virtual size_t get_segment_size (void) const;
+
+  /// Return the ID of the shared memory segment (i.e., an ACE_HANDLE).
+  virtual ACE_HANDLE get_id (void) const;
+
+  /// Dump the state of an object.
+  void dump (void) const;
+
+  /// Declare the dynamic allocation hooks.
+  ACE_ALLOC_HOOK_DECLARE;
+
+private:
+   /// This version is implemented with memory-mapped files.
+   ACE_Mem_Map shared_memory_;
+};
+
+ACE_END_VERSIONED_NAMESPACE_DECL
+
+#if defined (__ACE_INLINE__)
+#include "ace/Shared_Memory_MM.inl"
+#endif /* __ACE_INLINE__ */
+
+#include /**/ "ace/post.h"
+#endif /* ACE_SHARED_MALLOC_MM_H */