Subversion Repositories openrisc

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

//

//      mbox.cxx

//

//      Mbox mbox template class implementation

//

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

//####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:        1998-02-11

// Purpose:     Mbox implementation

// Description: This file contains the implementations of the mbox class

//

//####DESCRIPTIONEND####

//

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

#include <pkgconf/kernel.h>

#include <cyg/kernel/ktypes.h>         // base kernel types

#include <cyg/infra/cyg_trac.h>        // tracing macros

#include <cyg/infra/cyg_ass.h>         // assertion macros

#include <cyg/kernel/instrmnt.h>       // instrumentation

#include <cyg/kernel/thread.inl>       // Cyg_Thread inlines

#include <cyg/kernel/mbox.hxx>         // our own header

#ifndef CYGIMP_MBOXT_INLINE            // force inlining

#define CYGIMP_MBOXT_INLINE            // of implementation

#endif

#ifdef CYGIMP_MBOX_USE_MBOXT_PLAIN

#include <cyg/kernel/mboxt.inl>        // mbox template implementation

#else

#include <cyg/kernel/mboxt2.inl>       // mbox template implementation

#endif

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

// This module exists to cause exactly one instance of these functions to

// exist; this is just like a vanilla class, except we use the template

// class to acquire an implementation.  The template functions are inlined

// in each of these methods.

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

// Constructor

Cyg_Mbox::Cyg_Mbox()

{

}

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

// Destructor

Cyg_Mbox::~Cyg_Mbox()

{

}

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

// debugging/assert function

#ifdef CYGDBG_USE_ASSERTS

cyg_bool

Cyg_Mbox::check_this(cyg_assert_class_zeal zeal) const

{

    return m.check_this(zeal);

}

#endif

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

// now the members themselves:

void *

Cyg_Mbox::get()

{

    void * p;

    if ( ! m.get( p ) )

        return NULL;

    return p;

}

#ifdef CYGFUN_KERNEL_THREADS_TIMER

void *

Cyg_Mbox::get( cyg_tick_count timeout )

{

    void * p;

    if ( ! m.get( p, timeout ) )

        return NULL;

    return p;

}

#endif

void *

Cyg_Mbox::tryget()

{

    void * p;

    if ( ! m.tryget( p ) )

        return NULL;

    return p;

}

#ifdef  CYGMFN_KERNEL_SYNCH_MBOXT_PUT_CAN_WAIT

cyg_bool

Cyg_Mbox::put( void *item )

{

    return m.put( item );

}

#ifdef CYGFUN_KERNEL_THREADS_TIMER

cyg_bool

Cyg_Mbox::put( void *item, cyg_tick_count timeout )

{

    return m.put( item, timeout );

}

#endif

#endif // CYGMFN_KERNEL_SYNCH_MBOXT_PUT_CAN_WAIT

cyg_bool

Cyg_Mbox::tryput( void *item )

{

    return m.tryput( item );

}

void *

Cyg_Mbox::peek_item()                   // Get next item to be returned

{

    void *p;

    if ( ! m.peek_item( p ) )

        return NULL;

    return p;

}

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

// EOF mbox.cxx