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@@ -0,0 +1,163 @@
+#ifndef CYGONCE_MEMALLOC_DLMALLOC_HXX
+#define CYGONCE_MEMALLOC_DLMALLOC_HXX
+
+//==========================================================================
+//
+//      dlmalloc.hxx
+//
+//      Interface to the port of Doug Lea's malloc implementation
+//
+//==========================================================================
+//####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):    jlarmour
+// Contributors: 
+// Date:         2000-06-18
+// Purpose:      Define standard interface to Doug Lea's malloc implementation
+// Description:  Doug Lea's malloc has been ported to eCos. This file provides
+//               the interface between the implementation and the standard
+//               memory allocator interface required by eCos
+// Usage:        #include <cyg/memalloc/dlmalloc.hxx>
+//              
+//
+//####DESCRIPTIONEND####
+//
+//==========================================================================
+
+// CONFIGURATION
+
+#include <pkgconf/memalloc.h>
+
+#ifdef CYGIMP_MEMALLOC_ALLOCATOR_DLMALLOC_THREADAWARE
+# include <pkgconf/system.h>
+# ifdef CYGPKG_KERNEL
+#  include <pkgconf/kernel.h>
+# endif
+#endif
+
+// when used as an implementation for malloc, we need the following
+// to let the system know the name of the class
+#define CYGCLS_MEMALLOC_MALLOC_IMPL Cyg_Mempool_dlmalloc
+
+// if the implementation is all that's required, don't output anything else
+#ifndef __MALLOC_IMPL_WANTED
+
+// INCLUDES
+
+#include <stddef.h>                      // size_t, ptrdiff_t
+#include <cyg/infra/cyg_type.h>          // types
+#ifdef CYGIMP_MEMALLOC_ALLOCATOR_DLMALLOC_THREADAWARE
+# include <cyg/memalloc/mempolt2.hxx>    // kernel safe mempool template
+#endif
+#include <cyg/memalloc/dlmallocimpl.hxx> // dlmalloc implementation
+#include <cyg/memalloc/common.hxx>       // Common memory allocator infra
+#ifdef CYGFUN_KERNEL_THREADS_TIMER
+# include <cyg/kernel/ktypes.h>          // cyg_tick_count
+#endif
+
+
+// TYPE DEFINITIONS
+
+
+class Cyg_Mempool_dlmalloc
+{
+protected:
+#ifdef CYGIMP_MEMALLOC_ALLOCATOR_DLMALLOC_THREADAWARE
+    Cyg_Mempolt2<Cyg_Mempool_dlmalloc_Implementation> mypool;
+#else
+    Cyg_Mempool_dlmalloc_Implementation mypool;
+#endif
+
+
+public:
+    // Constructor: gives the base and size of the arena in which memory is
+    // to be carved out, note that management structures are taken from the
+    // same arena.
+    Cyg_Mempool_dlmalloc( cyg_uint8 *base, cyg_int32 size, 
+                          CYG_ADDRWORD argthru=0 )
+        : mypool( base, size, argthru ) {}
+
+    // Destructor
+    ~Cyg_Mempool_dlmalloc() {}
+
+    // get some memory; wait if none available
+    // if we aren't configured to be thread-aware this is irrelevant
+#ifdef CYGIMP_MEMALLOC_ALLOCATOR_DLMALLOC_THREADAWARE
+    cyg_uint8 *
+    alloc( cyg_int32 size ) { return mypool.alloc( size ); }
+    
+# ifdef CYGFUN_KERNEL_THREADS_TIMER
+    // get some memory with a timeout
+    cyg_uint8 *
+    alloc( cyg_int32 size, cyg_tick_count delay_timeout ) {
+        return mypool.alloc( size, delay_timeout );
+    }
+# endif
+#endif
+
+    // get some memory, return NULL if none available
+    cyg_uint8 *
+    try_alloc( cyg_int32 size ) { return mypool.try_alloc( 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 ) { 
+        return mypool.resize_alloc( alloc_ptr, newsize, oldsize);
+    }
+
+    // free the memory back to the pool
+    // returns true on success
+    cyg_bool
+    free( cyg_uint8 *ptr, cyg_int32 size=0 ) { return mypool.free(ptr, 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 ) {
+        // set to 0 - if there's anything really waiting, it will be set to
+        // 1 later
+        status.waiting = 0;
+        mypool.get_status( flags, status );
+    }
+};
+
+#endif // ifndef __MALLOC_IMPL_WANTED
+
+#endif // ifndef CYGONCE_MEMALLOC_DLMALLOC_HXX
+// EOF dlmalloc.hxx