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#ifndef CYGONCE_KERNEL_MEMPOOLT_HXX

#define CYGONCE_KERNEL_MEMPOOLT_HXX

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

//

//      mempoolt.hxx

//

//      Mempoolt (Memory pool template) class declarations

//

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

//####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):   hmt

// Contributors:        hmt

// Date:        1998-02-10

// Purpose:     Define Mempoolt 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 

//

//

//####DESCRIPTIONEND####

//

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

#include 

#include          // assertion macros

#include 

template 

class Cyg_Mempoolt

{

private:

    T pool;                             // underlying memory manager

    Cyg_ThreadQueue queue;              // queue of waiting threads

public:

    CYGDBG_DEFINE_CHECK_THIS

    Cyg_Mempoolt(

        cyg_uint8 *base,

        cyg_int32 size,

        CYG_ADDRWORD arg_thru );        // Constructor

    ~Cyg_Mempoolt();                    // 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 );

    // free the memory back to the pool

    cyg_bool free( cyg_uint8 *p, cyg_int32 size );

    // if applicable: return -1 if not fixed size

    cyg_int32 get_blocksize();

    // is anyone waiting for memory?

    cyg_bool waiting() { return ! queue.empty(); }

    // these two are obvious and generic

    cyg_int32 get_totalmem();

    cyg_int32 get_freemem();

    // get information about the construction parameters for external

    // freeing after the destruction of the holding object.

    void get_arena(

        cyg_uint8 * &base,

        cyg_int32 &size,

        CYG_ADDRWORD &arg_thru );

    // Return the size of the memory allocation (previously returned

    // by alloc() or try_alloc() ) at ptr. Returns -1 if not found

    cyg_int32

    get_allocation_size( cyg_uint8 * /* ptr */ );

};

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

#endif // ifndef CYGONCE_KERNEL_MEMPOOLT_HXX

// EOF mempoolt.hxx