OWBI1_IntrusiveCountableBase.hpp

Go to the documentation of this file.
00001 /*******************************************************************************
00002 * Copyright (C) 2004 Vintela, Inc. All rights reserved.
00003 *
00004 * Redistribution and use in source and binary forms, with or without
00005 * modification, are permitted provided that the following conditions are met:
00006 *
00007 *  - Redistributions of source code must retain the above copyright notice,
00008 *    this list of conditions and the following disclaimer.
00009 *
00010 *  - Redistributions in binary form must reproduce the above copyright notice,
00011 *    this list of conditions and the following disclaimer in the documentation
00012 *    and/or other materials provided with the distribution.
00013 *
00014 *  - Neither the name of Vintela, Inc. nor the names of its
00015 *    contributors may be used to endorse or promote products derived from this
00016 *    software without specific prior written permission.
00017 *
00018 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
00019 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00020 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00021 * ARE DISCLAIMED. IN NO EVENT SHALL Vintela, Inc. OR THE CONTRIBUTORS
00022 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
00023 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
00024 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00025 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
00026 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
00027 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
00028 * POSSIBILITY OF SUCH DAMAGE.
00029 *******************************************************************************/
00030 
00035 //
00036 //  Copyright (c) 2001, 2002 Peter Dimov
00037 //
00038 //  Permission to copy, use, modify, sell and distribute this software
00039 //  is granted provided this copyright notice appears in all copies.
00040 //  This software is provided "as is" without express or implied
00041 //  warranty, and with no claim as to its suitability for any purpose.
00042 //
00043 
00044 #ifndef OWBI1_INTRUSIVE_COUNTABLE_BASE_HPP_INCLUDE_GUARD_
00045 #define OWBI1_INTRUSIVE_COUNTABLE_BASE_HPP_INCLUDE_GUARD_
00046 
00047 #include "OWBI1_config.h"
00048 #include "OWBI1_RefCount.hpp"
00049 
00050 namespace OWBI1
00051 {
00052 
00058 class OWBI1_OWBI1PROVIFC_API IntrusiveCountableBase
00059 {
00060 private:
00061    RefCount m_useCount;
00062 
00063 protected:
00064    IntrusiveCountableBase()
00065       : m_useCount(0)
00066    {
00067    }
00068    
00069    IntrusiveCountableBase(const IntrusiveCountableBase&)
00070       : m_useCount(0)
00071    {
00072    }
00073    
00074    IntrusiveCountableBase& operator=(const IntrusiveCountableBase&)
00075    {
00076       // don't change m_useCount
00077       return *this;
00078    }
00079 
00080    virtual ~IntrusiveCountableBase();
00081 
00082 public:
00083    inline friend void IntrusiveReferenceAddRef(IntrusiveCountableBase * p)
00084    {
00085       p->m_useCount.inc();
00086    }
00087 
00088    inline friend void IntrusiveReferenceRelease(IntrusiveCountableBase * p)
00089    {
00090       if (p->m_useCount.decAndTest())
00091          delete p;
00092    }
00093 };
00094 
00095 } // end namespace OWBI1
00096 
00097 #endif
00098 

Generated on Thu Feb 9 08:48:27 2006 for openwbem by  doxygen 1.4.6