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