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#ifndef CYGONCE_MEMALLOC_COMMON_HXX

#define CYGONCE_MEMALLOC_COMMON_HXX

/*==========================================================================

//

//      common.hxx

//

//      Shared definitions used by memory allocators

//

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

//####ECOSGPLCOPYRIGHTBEGIN####

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

// This file is part of eCos, the Embedded Configurable Operating System.

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

//

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

// the terms of the GNU General Public License as published by the Free

// Software Foundation; either version 2 or (at your option) any later version.

//

// eCos is distributed in the hope that it will be useful, but WITHOUT ANY

// WARRANTY; without even the implied warranty of MERCHANTABILITY or

// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

// for more details.

//

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

// with eCos; if not, write to the Free Software Foundation, Inc.,

// 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

// License. However the source code for this file must still be made available

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

//

// This exception does not invalidate any other reasons why a work based on

// this file might be covered by the GNU General Public License.

//

// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.

// at http://sources.redhat.com/ecos/ecos-license/

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

//####ECOSGPLCOPYRIGHTEND####

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

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

//

// Author(s):    jlarmour

// Contributors:

// Date:         2000-06-12

// Purpose:      Shared definitions used by memory allocators

// Description:

// Usage:        #include 

//

//

//####DESCRIPTIONEND####

//

//========================================================================*/

/* CONFIGURATION */

#include 

/* TYPE DEFINITIONS */

// struct Cyg_Mempool_Status is returned by the get_status() method of

// standard eCos memory allocators. After return from get_status(), any

// field of type T may be set to ((T)-1) to indicate that the information

// is not available or not applicable to this allocator.

class Cyg_Mempool_Status {

public:

    const cyg_uint8 *arenabase; // base address of entire pool

    cyg_int32   arenasize;      // total size of entire pool

    cyg_int32   freeblocks;     // number of chunks free for use

    cyg_int32   totalallocated; // total allocated space in bytes

    cyg_int32   totalfree;      // total space in bytes not in use

    cyg_int32   blocksize;      // block size if fixed block

    cyg_int32   maxfree;        // size of largest unused block

    cyg_int8    waiting;        // are there any threads waiting for memory?

    const cyg_uint8 *origbase;  // address of original region used when pool

                                // created

    cyg_int32   origsize;       // size of original region used when pool

                                // created

    // maxoverhead is the *maximum* per-allocation overhead imposed by

    // the allocator implementation. Note: this is rarely the typical

    // overhead which often depends on the size of the allocation requested.

    // It includes overhead due to alignment constraints. For example, if

    // maxfree and maxoverhead are available for this allocator, then an

    // allocation request of (maxfree-maxoverhead) bytes must always succeed

    // Unless maxoverhead is set to -1 of course, in which case the allocator

    // does not support reporting this information.

    cyg_int8    maxoverhead;

    void

    init() {

        arenabase       = (const cyg_uint8 *)-1;

        arenasize       = -1;

        freeblocks      = -1;

        totalallocated  = -1;

        totalfree       = -1;

        blocksize       = -1;

        maxfree         = -1;

        waiting         = -1;

        origbase        = (const cyg_uint8 *)-1;

        origsize        = -1;

        maxoverhead     = -1;

    }

    // constructor

    Cyg_Mempool_Status() { init(); }

};

// Flags to pass to get_status() methods to tell it which stat(s) is/are

// being requested

#define CYG_MEMPOOL_STAT_ARENABASE       (1<<0)

#define CYG_MEMPOOL_STAT_ARENASIZE       (1<<1)

#define CYG_MEMPOOL_STAT_FREEBLOCKS      (1<<2)

#define CYG_MEMPOOL_STAT_TOTALALLOCATED  (1<<3)

#define CYG_MEMPOOL_STAT_TOTALFREE       (1<<4)

#define CYG_MEMPOOL_STAT_BLOCKSIZE       (1<<5)

#define CYG_MEMPOOL_STAT_MAXFREE         (1<<6)

#define CYG_MEMPOOL_STAT_WAITING         (1<<7)

#define CYG_MEMPOOL_STAT_ORIGBASE        (1<<9)

#define CYG_MEMPOOL_STAT_ORIGSIZE        (1<<10)

#define CYG_MEMPOOL_STAT_MAXOVERHEAD     (1<<11)

// And an opaque type for any arguments with these flags

typedef cyg_uint16 cyg_mempool_status_flag_t;

#endif /* ifndef CYGONCE_MEMALLOC_COMMON_HXX */

/* EOF common.hxx */