1 /*

     2 * Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the License "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 * Note: This file may contain code to generate corrupt files for test purposes.

    16 * Such code is excluded from production builds by use of compiler defines;

    17 * it is recommended that such code should be removed if this code is ever published publicly.

    18 * part of smart pointers. See CElement.

    19 *

    20 */

    21 

    22 

    23 /**

    24  @file 

    25  @internalComponent

    26  @released

    27 */

    28 

    29 #ifndef __COUNTERBASE_H__

    30 #define __COUNTERBASE_H__

    31 

    32 #include "utility_interface.h"

    33 #include <assert.h>

    34 #include "basetype.h"

    35 

    36 

    37 

    38 class CCounterBase

    39 	{

    40 public:

    41     CCounterBase ();

    42     virtual ~CCounterBase ();

    43     virtual void Dispose () = 0; 

    44     virtual void Destruct ();

    45     void AddRef ();

    46     void Release (); 

    47     long UseCount () const;

    48 private:

    49     CCounterBase (CCounterBase const&);

    50     CCounterBase& operator = (CCounterBase const&);

    51 private:

    52     long iUseCount;

    53 	};

    54 

    55 

    56 

    57 inline CCounterBase::CCounterBase () : 

    58 		iUseCount (1)

    59 	{

    60 	}

    61 

    62 inline CCounterBase::~CCounterBase ()

    63 	{ 

    64 	}

    65 

    66 inline void CCounterBase::Destruct ()

    67 	{ 

    68 	delete this; 

    69 	}

    70 

    71 inline void CCounterBase::AddRef ()

    72 	{

    73     assert (iUseCount != 0);

    74 	++iUseCount;

    75 	}

    76 

    77 inline void CCounterBase::Release () 

    78 	{

    79 	if (--iUseCount) 

    80 		{

    81 		return;

    82 		}

    83     Dispose ();

    84     Destruct ();

    85 	}

    86 

    87 inline long CCounterBase::UseCount () const

    88 	{ 

    89 	return iUseCount; 

    90 	}

    91 

    92 #endif // __COUNTERBASE_H__