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@@ -0,0 +1,130 @@
+#ifndef CYGONCE_MEMALLOC_MEMPOLT2_HXX
+#define CYGONCE_MEMALLOC_MEMPOLT2_HXX
+
+//==========================================================================
+//
+//      mempolt2.hxx
+//
+//      Mempolt2 (Memory pool template) 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):    hmt
+// Contributors: jlarmour
+// Date:         2000-06-12
+// Purpose:      Define Mempolt2 class interface
+// Description:  The class defined here provides the APIs for thread-safe,
+//               kernel-savvy memory managers; make a class with the
+//               underlying allocator as the template parameter.
+// Usage:        #include <cyg/memalloc/mempolt2.hxx>
+//              
+//
+//####DESCRIPTIONEND####
+//
+//==========================================================================
+
+// It is assumed that implementations using this file have already mandated
+// that the kernel is present. So we just go ahead and use it
+
+#include <pkgconf/memalloc.h>
+#include <cyg/kernel/ktypes.h>
+#include <cyg/infra/cyg_ass.h>         // assertion macros
+#include <cyg/kernel/thread.hxx>
+#include <cyg/memalloc/common.hxx>     // Common memory allocator infra
+
+template <class T>
+class Cyg_Mempolt2
+{
+private:
+    T pool;                             // underlying memory manager
+    Cyg_ThreadQueue queue;              // queue of waiting threads
+
+    class Mempolt2WaitInfo {
+    private:
+        Mempolt2WaitInfo() {}
+    public:
+        cyg_int32 size;
+        cyg_uint8 *addr;
+        Mempolt2WaitInfo( cyg_int32 allocsize )
+        { size = allocsize; addr = 0; }
+    };
+
+public:
+
+    Cyg_Mempolt2(
+        cyg_uint8 *base,
+        cyg_int32 size,
+        CYG_ADDRWORD arg_thru );        // Constructor
+    ~Cyg_Mempolt2();                    // Destructor
+        
+    // get some memory; wait if none available; return NULL if failed
+    // due to interrupt
+    cyg_uint8 *alloc( cyg_int32 size );
+    
+#ifdef CYGFUN_KERNEL_THREADS_TIMER
+    // get some memory with a timeout; return NULL if failed
+    // due to interrupt or timeout
+    cyg_uint8 *alloc( cyg_int32 size, cyg_tick_count abs_timeout );
+#endif
+
+    // get some memory, return NULL if none available
+    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 the memory back to the pool
+    // returns true on success
+    cyg_bool free( cyg_uint8 *p, 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 );
+
+    CYGDBG_DEFINE_CHECK_THIS
+    
+};
+
+#include <cyg/memalloc/mempolt2.inl>
+
+// -------------------------------------------------------------------------
+#endif // ifndef CYGONCE_MEMALLOC_MEMPOLT2_HXX
+// EOF mempolt2.hxx