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 _SALHELPER_REFOBJ_HXX_ 29 #define _SALHELPER_REFOBJ_HXX_ 30 31 #include <sal/types.h> 32 #include <rtl/alloc.h> 33 #include <rtl/ref.hxx> 34 #include <osl/diagnose.h> 35 #include <osl/interlck.h> 36 37 namespace salhelper 38 { 39 40 //---------------------------------------------------------------------------- 41 42 class ReferenceObject : public rtl::IReference 43 { 44 /** Representation. 45 */ 46 oslInterlockedCount m_nReferenceCount; 47 48 /** Not implemented. 49 */ 50 ReferenceObject (const ReferenceObject&); 51 ReferenceObject& operator= (const ReferenceObject&); 52 53 public: 54 /** Allocation. 55 */ 56 static void* operator new (size_t n) SAL_THROW(()) 57 { 58 return ::rtl_allocateMemory (n); 59 } 60 static void operator delete (void* p) SAL_THROW(()) 61 { 62 ::rtl_freeMemory (p); 63 } 64 static void* operator new (size_t, void* p) SAL_THROW(()) 65 { 66 return (p); 67 } 68 static void operator delete (void*, void*) SAL_THROW(()) 69 {} 70 71 public: 72 /** Construction. 73 */ 74 inline ReferenceObject() SAL_THROW(()) : m_nReferenceCount (0) 75 {} 76 77 78 /** IReference. 79 */ 80 virtual oslInterlockedCount SAL_CALL acquire() SAL_THROW(()) 81 { 82 return ::osl_incrementInterlockedCount (&m_nReferenceCount); 83 } 84 85 virtual oslInterlockedCount SAL_CALL release() SAL_THROW(()) 86 { 87 oslInterlockedCount result; 88 result = ::osl_decrementInterlockedCount (&m_nReferenceCount); 89 if (result == 0) 90 { 91 // Last reference released. 92 delete this; 93 } 94 return (result); 95 } 96 97 protected: 98 /** Destruction. 99 */ 100 virtual ~ReferenceObject() SAL_THROW(()) 101 { 102 OSL_ASSERT(m_nReferenceCount == 0); 103 } 104 }; 105 106 //---------------------------------------------------------------------------- 107 108 } // namespace salhelper 109 110 #endif /* !_SALHELPER_REFOBJ_HXX_ */ 111