1 /************************************************************************* 2 * 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * Copyright 2000, 2010 Oracle and/or its affiliates. 6 * 7 * OpenOffice.org - a multi-platform office productivity suite 8 * 9 * This file is part of OpenOffice.org. 10 * 11 * OpenOffice.org is free software: you can redistribute it and/or modify 12 * it under the terms of the GNU Lesser General Public License version 3 13 * only, as published by the Free Software Foundation. 14 * 15 * OpenOffice.org is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU Lesser General Public License version 3 for more details 19 * (a copy is included in the LICENSE file that accompanied this code). 20 * 21 * You should have received a copy of the GNU Lesser General Public License 22 * version 3 along with OpenOffice.org. If not, see 23 * <http://www.openoffice.org/license.html> 24 * for a copy of the LGPLv3 License. 25 * 26 ************************************************************************/ 27 28 #ifndef _VOS_REFERNCE_HXX_ 29 #define _VOS_REFERNCE_HXX_ 30 31 # include <vos/types.hxx> 32 # include <osl/interlck.h> 33 # include <vos/object.hxx> 34 35 namespace vos 36 { 37 38 /** Interface for refernce-counting 39 */ 40 class IReference 41 { 42 public: 43 44 IReference() { } 45 virtual ~IReference() { } 46 47 typedef oslInterlockedCount RefCount; 48 49 virtual RefCount SAL_CALL acquire()=0; 50 virtual RefCount SAL_CALL release()=0; 51 52 virtual RefCount SAL_CALL referenced() const=0; 53 }; 54 55 class ORefCount 56 { 57 public: 58 typedef IReference::RefCount RefCount; 59 60 ORefCount() { m_RefCount = 0; } 61 ORefCount(RefCount n) { m_RefCount = n; } 62 virtual ~ORefCount(); 63 64 RefCount SAL_CALL acquire() { return (osl_incrementInterlockedCount(&m_RefCount)); }; 65 RefCount SAL_CALL release() { return (osl_decrementInterlockedCount(&m_RefCount)); }; 66 67 RefCount SAL_CALL operator++() { return acquire(); } 68 // don't implement the postfix operator, it won't function this way! 69 70 RefCount SAL_CALL operator--() { return release(); } 71 // don't implement the postfix operator, it won't function this way! 72 73 RefCount SAL_CALL referenced() const 74 { return (m_RefCount); } 75 76 protected: 77 RefCount m_RefCount; 78 79 private: 80 // disable copy/assignment 81 ORefCount(const ORefCount&); 82 ORefCount& SAL_CALL operator= (const ORefCount&); 83 }; 84 85 class OReference : public vos::IReference 86 { 87 public: 88 OReference(); 89 virtual ~OReference(); 90 91 virtual RefCount SAL_CALL acquire(); 92 virtual RefCount SAL_CALL release(); 93 94 virtual RefCount SAL_CALL referenced() const 95 { return (m_RefCount.referenced()); } 96 97 protected: 98 ORefCount m_RefCount; 99 100 private: 101 // disable copy/assignment 102 OReference(const OReference&); 103 OReference& SAL_CALL operator= (const OReference&); 104 }; 105 106 } 107 108 #endif // _VOS_REFERNCE_HXX_ 109 110