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weak.hxx
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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 /*
3 * This file is part of the LibreOffice project.
4 *
5 * This Source Code Form is subject to the terms of the Mozilla Public
6 * License, v. 2.0. If a copy of the MPL was not distributed with this
7 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 *
9 * This file incorporates work covered by the following license notice:
10 *
11 * Licensed to the Apache Software Foundation (ASF) under one or more
12 * contributor license agreements. See the NOTICE file distributed
13 * with this work for additional information regarding copyright
14 * ownership. The ASF licenses this file to you under the Apache
15 * License, Version 2.0 (the "License"); you may not use this file
16 * except in compliance with the License. You may obtain a copy of
17 * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 */
19 #ifndef INCLUDED_CPPUHELPER_WEAK_HXX
20 #define INCLUDED_CPPUHELPER_WEAK_HXX
21
22 #include <cassert>
23 #include <cstddef>
24 #include <osl/interlck.h>
25 #include <rtl/alloc.h>
26 #include <com/sun/star/uno/XWeak.hpp>
27 #include <cppuhelper/cppuhelperdllapi.h>
28
29
30 namespace cppu
31 {
32
33 class OWeakConnectionPoint;
34
43 class CPPUHELPER_DLLPUBLIC OWeakObject : public css::uno::XWeak
44 {
45 friend class OWeakConnectionPoint;
46
47 protected:
54 virtual ~OWeakObject();
55
60 void disposeWeakConnectionPoint();
61
67 oslInterlockedCount m_refCount;
68
70
73 OWeakConnectionPoint * m_pWeakConnectionPoint;
74
77 void * m_pReserved;
78
80
81 public:
83 // these are here to force memory de/allocation to sal lib.
84 inline static void * SAL_CALL operator new( size_t nSize )
85 { return ::rtl_allocateMemory( nSize ); }
86 inline static void SAL_CALL operator delete( void * pMem )
87 { ::rtl_freeMemory( pMem ); }
88 inline static void * SAL_CALL operator new( size_t, void * pMem )
89 { return pMem; }
90 inline static void SAL_CALL operator delete( void *, void * )
91 {}
93
94 #ifdef _MSC_VER
95
98 OWeakObject();
99 #else
100
102 inline OWeakObject()
103 : m_refCount( 0 )
104 , m_pWeakConnectionPoint( NULL )
105 , m_pReserved(NULL)
106 {}
107 #endif
108
112 inline OWeakObject( const OWeakObject & rObj )
113 : css::uno::XWeak()
114 , m_refCount( 0 )
115 , m_pWeakConnectionPoint( NULL )
116 , m_pReserved(NULL)
117 {
118 (void) rObj;
119 }
124 inline OWeakObject & SAL_CALL operator = ( const OWeakObject &)
125 { return *this; }
126
133 virtual css::uno::Any SAL_CALL queryInterface(
134 const css::uno::Type & rType )
135 throw (css::uno::RuntimeException, std::exception) SAL_OVERRIDE;
138 virtual void SAL_CALL acquire()
139 throw () SAL_OVERRIDE;
142 virtual void SAL_CALL release()
143 throw () SAL_OVERRIDE;
144
149 virtual css::uno::Reference< css::uno::XAdapter > SAL_CALL queryAdapter()
150 throw (css::uno::RuntimeException, std::exception) SAL_OVERRIDE;
151
156 inline SAL_CALL operator css::uno::Reference< css::uno::XInterface > ()
157 { return this; }
158 };
159
161
172 static inline css::uno::XInterface * acquire(OWeakObject * instance)
173 {
174 assert(instance != NULL);
175 instance->acquire();
176 return instance;
177 }
179
180 }
181
182 #endif
183
184 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
cppu::OWeakObject
Base class to implement an UNO object supporting weak references, i.e.
Definition: weak.hxx:43
cppu::OWeakObject::OWeakObject
OWeakObject()
Default Constructor.
Definition: weak.hxx:102
interlck.h
cppu
Definition: Enterable.hxx:26
alloc.h
cppu::queryInterface
css::uno::Any queryInterface(const css::uno::Type &rType, Interface1 *p1)
Compares demanded type to given template argument types.
Definition: queryinterface.hxx:39
cppu::OWeakObject::acquire
virtual void acquire() SAL_OVERRIDE
increasing m_refCount
rtl_freeMemory
SAL_DLLPUBLIC void rtl_freeMemory(void *Ptr) SAL_THROW_EXTERN_C()
Free memory.
SAL_OVERRIDE
#define SAL_OVERRIDE
C++11 "override" feature.
Definition: types.h:423
com::sun::star
Definition: types.h:391
cppu::OWeakObject::m_refCount
oslInterlockedCount m_refCount
reference count.
Definition: weak.hxx:67
cppuhelperdllapi.h
oslInterlockedCount
sal_Int32 oslInterlockedCount
Definition: interlck.h:36
CPPUHELPER_DLLPUBLIC
#define CPPUHELPER_DLLPUBLIC
Definition: cppuhelperdllapi.h:28
rtl_allocateMemory
SAL_DLLPUBLIC void * rtl_allocateMemory(sal_Size Bytes) SAL_THROW_EXTERN_C()
Allocate memory.
cppu::OWeakObject::OWeakObject
OWeakObject(const OWeakObject &rObj)
Dummy copy constructor.
Definition: weak.hxx:112