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#ifndef CYGONCE_MEMALLOC_MFIXIMPL_HXX

#define CYGONCE_MEMALLOC_MFIXIMPL_HXX

//==========================================================================

//

//      mfiximpl.hxx

//

//      Memory pool with fixed block class declarations

//

//==========================================================================

//####ECOSGPLCOPYRIGHTBEGIN####

// -------------------------------------------

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// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.

//

// eCos is free software; you can redistribute it and/or modify it under

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// for more details.

//

// You should have received a copy of the GNU General Public License along

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// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.

//

// As a special exception, if other files instantiate templates or use macros

// or inline functions from this file, or you compile this file and link it

// with other works to produce a work based on this file, this file does not

// by itself cause the resulting work to be covered by the GNU General Public

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// in accordance with section (3) of the GNU General Public License.

//

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// -------------------------------------------

//####ECOSGPLCOPYRIGHTEND####

//==========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):    hmt

// Contributors: jlarmour

// Date:         2000-06-12

// Purpose:      Define Mfiximpl class interface

// Description:  Inline class for constructing a fixed block allocator

// Usage:        #include 

//

//

//####DESCRIPTIONEND####

//

//==========================================================================

#include 

#include      // Common memory allocator infra

class Cyg_Mempool_Fixed_Implementation {

protected:

    // these constructors are explicitly disallowed

    Cyg_Mempool_Fixed_Implementation() {};

//    Cyg_Mempool_Fixed_Implementation( Cyg_Mempool_Fixed_Implementation &ref )

//    {};

    Cyg_Mempool_Fixed_Implementation &

    operator=( Cyg_Mempool_Fixed_Implementation &ref )

    { return ref; };

    cyg_uint32 *bitmap;

    cyg_int32 maptop;

    cyg_uint8  *mempool;

    cyg_int32 numblocks;

    cyg_int32 freeblocks;

    cyg_int32 blocksize;

    cyg_int32 firstfree;

    cyg_uint8  *top;

public:

    // THIS is the public API of memory pools generally that can have the

    // kernel oriented thread-safe package layer atop.

    //

    // The kernel package is a template whose type parameter is one of

    // these.  That is the reason there are superfluous parameters here and

    // more genereralization than might be expected in a fixed block

    // allocator.

    // 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.  The alloc_unit may be any other param in general; it

    // comes through from the outer constructor unchanged.

    Cyg_Mempool_Fixed_Implementation(

        cyg_uint8 *base,

        cyg_int32 size,

        CYG_ADDRWORD alloc_unit );

    // Destructor

    ~Cyg_Mempool_Fixed_Implementation();

    // get some memory; size is ignored in a fixed block allocator

    cyg_uint8 *try_alloc( cyg_int32 size );

    // supposedly resize existing allocation. This is defined in the

    // fixed block allocator purely for API consistency. It will return

    // an error (false) for all values, except for the blocksize

    // returns true on success

    cyg_uint8 *

    resize_alloc( cyg_uint8 *alloc_ptr, cyg_int32 newsize,

                  cyg_int32 *oldsize=NULL );

    // free the memory back to the pool; size ignored here

    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 */ );

};

#include 

// -------------------------------------------------------------------------

#endif // ifndef CYGONCE_MEMALLOC_MFIXIMPL_HXX

// EOF mfiximpl.hxx