LibreOffice: cppuhelper/weak.hxx Source File

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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.
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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
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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
20/*
21 * This file is part of LibreOffice published API.
22 */
23#ifndef INCLUDED_CPPUHELPER_WEAK_HXX
24#define INCLUDED_CPPUHELPER_WEAK_HXX
25
26#include <cassert>
27#include <cstddef>
28#include "osl/interlck.h"
29#include "rtl/alloc.h"
30#include "com/sun/star/uno/XWeak.hpp"
31#include "cppuhelper/cppuhelperdllapi.h"
32
33
34namespace cppu
35{
36
37class OWeakConnectionPoint;
38
47 class CPPUHELPER_DLLPUBLIC OWeakObject : public css::uno::XWeak
48{
49 friend class OWeakConnectionPoint;
50
51protected:
58 virtual ~OWeakObject() COVERITY_NOEXCEPT_FALSE;
59
64 void disposeWeakConnectionPoint();
65
71 oslInterlockedCount m_refCount;
72
74
77 OWeakConnectionPoint * m_pWeakConnectionPoint;
78
81 void * m_pReserved;
82
84
85public:
87 // these are here to force memory de/allocation to sal lib.
88 static void * SAL_CALL operator new( size_t nSize )
89 { return ::rtl_allocateMemory( nSize ); }
90 static void SAL_CALL operator delete( void * pMem )
91 { ::rtl_freeMemory( pMem ); }
92 static void * SAL_CALL operator new( size_t, void * pMem )
93 { return pMem; }
94 static void SAL_CALL operator delete( void *, void * )
95 {}
97
98#ifdef _MSC_VER
102 OWeakObject();
103#else
106 OWeakObject()
107 : m_refCount( 0 )
108 , m_pWeakConnectionPoint( NULL )
109 , m_pReserved(NULL)
110 {}
111#endif
114 OWeakObject( const OWeakObject & )
115 : css::uno::XWeak()
116 , m_refCount( 0 )
117 , m_pWeakConnectionPoint( NULL )
118 , m_pReserved(NULL)
119 {}
124 OWeakObject & SAL_CALL operator = ( const OWeakObject &)
125 { return *this; }
126
133 virtual css::uno::Any SAL_CALL queryInterface(
134 const css::uno::Type & rType ) SAL_OVERRIDE;
137 virtual void SAL_CALL acquire()
138 SAL_NOEXCEPT SAL_OVERRIDE;
141 virtual void SAL_CALL release()
142 SAL_NOEXCEPT SAL_OVERRIDE;
143
148 virtual css::uno::Reference< css::uno::XAdapter > SAL_CALL queryAdapter() SAL_OVERRIDE;
149
154 SAL_CALL operator css::uno::Reference< css::uno::XInterface > ()
155 { return this; }
156};
157
159
170static inline css::uno::XInterface * acquire(OWeakObject * instance)
171{
172 assert(instance != NULL);
173 instance->acquire();
174 return instance;
175}
177
178}
179
180#endif
181
182/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
SAL_NOEXCEPT
#define SAL_NOEXCEPT
Macro for C++11 "noexcept" vs.
Definition: types.h:416
COVERITY_NOEXCEPT_FALSE
#define COVERITY_NOEXCEPT_FALSE
To markup destructors that coverity warns might throw exceptions which won't throw in practice,...
Definition: types.h:349
SAL_OVERRIDE
#define SAL_OVERRIDE
C++11 "override" feature.
Definition: types.h:391
alloc.h
rtl_freeMemory
SAL_DLLPUBLIC void rtl_freeMemory(void *Ptr) SAL_THROW_EXTERN_C()
Free memory.
rtl_allocateMemory
SAL_DLLPUBLIC void * rtl_allocateMemory(sal_Size Bytes) SAL_THROW_EXTERN_C()
Allocate memory.
interlck.h
oslInterlockedCount
sal_Int32 oslInterlockedCount
Definition: interlck.h:44
cppuhelperdllapi.h
CPPUHELPER_DLLPUBLIC
#define CPPUHELPER_DLLPUBLIC
Definition: cppuhelperdllapi.h:32
com::sun::star
Definition: types.h:359
cppu
Definition: Enterable.hxx:31
cppu::OWeakObject
Base class to implement a UNO object supporting weak references, i.e.
Definition: weak.hxx:48
cppu::OWeakObject::OWeakObject
OWeakObject(const OWeakObject &)
Dummy copy constructor.
Definition: weak.hxx:114
cppu::OWeakObject::OWeakObject
OWeakObject()
Default Constructor.
Definition: weak.hxx:106
cppu::OWeakObject::queryInterface
virtual css::uno::Any queryInterface(const css::uno::Type &rType) SAL_OVERRIDE
Basic queryInterface() implementation supporting com::sun::star::uno::XWeak and com::sun::star::uno::...
cppu::OWeakObject::acquire
virtual void acquire() SAL_NOEXCEPT SAL_OVERRIDE
increasing m_refCount
cppu::OWeakObject::~OWeakObject
virtual ~OWeakObject() COVERITY_NOEXCEPT_FALSE
Virtual dtor.