new file mode 100644
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+++ b/packages/services/memalloc/common/current/include/mvarimpl.hxx
@@ -0,0 +1,145 @@
+#ifndef CYGONCE_MEMALLOC_MVARIMPL_HXX
+#define CYGONCE_MEMALLOC_MVARIMPL_HXX
+
+//==========================================================================
+//
+//      mvarimpl.hxx
+//
+//      Memory pool with variable block class declarations
+//
+//==========================================================================
+//####COPYRIGHTBEGIN####
+//                                                                          
+// -------------------------------------------                              
+// The contents of this file are subject to the Red Hat eCos Public License 
+// Version 1.1 (the "License"); you may not use this file except in         
+// compliance with the License.  You may obtain a copy of the License at    
+// http://www.redhat.com/                                                   
+//                                                                          
+// Software distributed under the License is distributed on an "AS IS"      
+// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the 
+// License for the specific language governing rights and limitations under 
+// the License.                                                             
+//                                                                          
+// The Original Code is eCos - Embedded Configurable Operating System,      
+// released September 30, 1998.                                             
+//                                                                          
+// The Initial Developer of the Original Code is Red Hat.                   
+// Portions created by Red Hat are                                          
+// Copyright (C) 1998, 1999, 2000 Red Hat, Inc.                             
+// All Rights Reserved.                                                     
+// -------------------------------------------                              
+//                                                                          
+//####COPYRIGHTEND####
+//==========================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):    dsm, jlarmour
+// Contributors: 
+// Date:         2000-06-12
+// Purpose:      Define Mvarimpl class interface
+// Description:  Inline class for constructing a variable block allocator
+// Usage:        #include <cyg/memalloc/mvarimpl.hxx>
+//              
+//
+//####DESCRIPTIONEND####
+//
+//==========================================================================
+
+
+#include <cyg/infra/cyg_type.h>
+#include <pkgconf/memalloc.h>
+#include <cyg/memalloc/common.hxx>     // Common memory allocator infra
+
+class Cyg_Mempool_Variable_Implementation {
+protected:
+    // these constructors are explicitly disallowed
+    Cyg_Mempool_Variable_Implementation() {};
+//    Cyg_Mempool_Variable_Implementation( Cyg_Mempool_Variable_Implementation &ref )
+//    {};
+    Cyg_Mempool_Variable_Implementation &
+    operator=( Cyg_Mempool_Variable_Implementation &ref )
+    { return ref; };
+
+    struct memdq {
+        struct memdq *prev, *next;
+        cyg_int32 size;
+    };
+
+    struct memdq head;
+    cyg_uint8  *obase;
+    cyg_int32  osize;
+    cyg_uint8  *bottom;
+    cyg_uint8  *top;
+    cyg_int32  alignment;
+    cyg_int32  freemem;
+
+    // round up size passed to alloc/free to a size that will be used
+    // for allocation
+    cyg_int32
+    roundup(cyg_int32 size);
+
+    struct memdq *
+    addr2memdq( cyg_uint8 *addr );
+
+    struct memdq *
+    alloc2memdq( cyg_uint8 *addr );
+
+    cyg_uint8 *
+    memdq2alloc( struct memdq *dq );
+
+    void
+    insert_free_block( struct memdq *freedq );
+
+public:
+    // THIS is the public API of memory pools generally that can have the
+    // kernel oriented thread-safe package layer atop.
+
+    // Constructor: gives the base and size of the arena in which memory is
+    // to be carved out.
+    Cyg_Mempool_Variable_Implementation(
+        cyg_uint8 *  /* base */,
+        cyg_int32    /* size */,
+        CYG_ADDRWORD /* alignment */ = 8 );
+
+    // Destructor
+    ~Cyg_Mempool_Variable_Implementation();
+
+    // get size bytes of memory
+    cyg_uint8 *
+    try_alloc( cyg_int32 /* size */ );
+    
+    // resize existing allocation, if oldsize is non-NULL, previous
+    // allocation size is placed into it. If previous size not available,
+    // it is set to 0. NB previous allocation size may have been rounded up.
+    // Occasionally the allocation can be adjusted *backwards* as well as,
+    // or instead of forwards, therefore the address of the resized
+    // allocation is returned, or NULL if no resizing was possible.
+    // Note that this differs from ::realloc() in that no attempt is
+    // made to call malloc() if resizing is not possible - that is left
+    // to higher layers. The data is copied from old to new though.
+    // The effects of alloc_ptr==NULL or newsize==0 are undefined
+    cyg_uint8 *
+    resize_alloc( cyg_uint8 *alloc_ptr, cyg_int32 newsize,
+                  cyg_int32 *oldsize );
+
+    // free size bytes of memory back to the pool
+    // returns true on success
+    cyg_bool
+    free( cyg_uint8 * /* ptr */,
+          cyg_int32   /* size */ );
+
+    // Get memory pool status
+    // flags is a bitmask of requested fields to fill in. The flags are
+    // defined in common.hxx
+    void
+    get_status( cyg_mempool_status_flag_t /* flags */,
+                Cyg_Mempool_Status & /* status */ );
+    
+};
+
+#include <cyg/memalloc/mvarimpl.inl>
+
+// -------------------------------------------------------------------------
+#endif // ifndef CYGONCE_MEMALLOC_MVARIMPL_HXX
+// EOF mvarimpl.hxx