/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* * This file is part of the LibreOffice project. * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * * This file incorporates work covered by the following license notice: * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed * with this work for additional information regarding copyright * ownership. The ASF licenses this file to you under the Apache * License, Version 2.0 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.apache.org/licenses/LICENSE-2.0 . */ /* * This file is part of LibreOffice published API. */ #ifndef INCLUDED_CPPUHELPER_WEAK_HXX #define INCLUDED_CPPUHELPER_WEAK_HXX #include #include #include "osl/interlck.h" #include "rtl/alloc.h" #include "com/sun/star/uno/XWeak.hpp" #include "cppuhelper/cppuhelperdllapi.h" namespace cppu { class OWeakConnectionPoint; /** Base class to implement a UNO object supporting weak references, i.e. the object can be held weakly (by a css::uno::WeakReference). This implementation copes with reference counting. Upon last release(), the virtual dtor is called. @derive Inherit from this class and delegate acquire()/ release() calls. */ class CPPUHELPER_DLLPUBLIC OWeakObject : public css::uno::XWeak { friend class OWeakConnectionPoint; protected: /** Virtual dtor. @attention Despite the fact that a RuntimeException is allowed to be thrown, you must not throw any exception upon destruction! */ virtual ~OWeakObject() COVERITY_NOEXCEPT_FALSE; /** disposes and resets m_pWeakConnectionPoint @pre m_refCount equals 0 */ void disposeWeakConnectionPoint(); /** reference count. @attention Don't modify manually! Use acquire() and release(). */ oslInterlockedCount m_refCount; /// @cond INTERNAL /** Container of all weak reference listeners and the connection point from the weak reference. */ OWeakConnectionPoint * m_pWeakConnectionPoint; /** reserved for future use. do not use. */ void * m_pReserved; /// @endcond public: /// @cond INTERNAL // these are here to force memory de/allocation to sal lib. static void * SAL_CALL operator new( size_t nSize ) { return ::rtl_allocateMemory( nSize ); } static void SAL_CALL operator delete( void * pMem ) { ::rtl_freeMemory( pMem ); } static void * SAL_CALL operator new( size_t, void * pMem ) { return pMem; } static void SAL_CALL operator delete( void *, void * ) {} /// @endcond /** Default Constructor. Sets the reference count to zero. */ OWeakObject() : m_refCount( 0 ) , m_pWeakConnectionPoint( NULL ) , m_pReserved(NULL) {} /** Dummy copy constructor. Set the reference count to zero. */ OWeakObject( const OWeakObject & ) : css::uno::XWeak() , m_refCount( 0 ) , m_pWeakConnectionPoint( NULL ) , m_pReserved(NULL) {} /** Dummy assignment operator. Does not affect reference count. @return this OWeakObject */ OWeakObject & SAL_CALL operator = ( const OWeakObject &) { return *this; } /** Basic queryInterface() implementation supporting com::sun::star::uno::XWeak and com::sun::star::uno::XInterface. @param rType demanded type @return demanded type or empty any */ virtual css::uno::Any SAL_CALL queryInterface( const css::uno::Type & rType ) SAL_OVERRIDE; /** increasing m_refCount */ virtual void SAL_CALL acquire() SAL_NOEXCEPT SAL_OVERRIDE; /** decreasing m_refCount */ virtual void SAL_CALL release() SAL_NOEXCEPT SAL_OVERRIDE; /** XWeak::queryAdapter() implementation @return a com::sun::star::uno::XAdapter reference */ virtual css::uno::Reference< css::uno::XAdapter > SAL_CALL queryAdapter() SAL_OVERRIDE; /** Cast operator to XInterface reference. @return XInterface reference */ SAL_CALL operator css::uno::Reference< css::uno::XInterface > () { return this; } #if defined LIBO_INTERNAL_ONLY css::uno::XWeak* getXWeak() { return this; } #endif }; /// @cond INTERNAL /** Convenience function for constructor-based service implementations. To be used like: css::uno::XInterface * FOO_constructor_function(...) { return cppu::acquire(new FOO(...)); } @param instance Newly created instance that should be acquired. */ static inline css::uno::XInterface * acquire(OWeakObject * instance) { assert(instance != NULL); instance->acquire(); return instance; } #if defined LIBO_INTERNAL_ONLY static inline css::uno::XWeak* getXWeak(OWeakObject* instance) { return instance; } #endif /// @endcond } #endif /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ ion> LibreOffice 核心代码仓库文档基金会
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AgeCommit message (Expand)Author
2022-05-23clang-tidy modernize-pass-by-value in jvmaccessNoel Grandin
2022-04-13loplugin:stringviewparam whitelist some more functionsNoel Grandin
2022-03-11new loplugin:trivialdestructorNoel Grandin
2021-10-05drop 'using namespace std' in h* i* j*Julien Nabet
2021-04-07Updated README.md files to represent current code / use Markdown formatHossein
2021-03-24Using .md extension/Markdown syntax for modules READMEHossein
2020-11-13tdf#123936 Formatting files in module jvmaccess with clang-formatPhilipp Hofer
2020-07-10replace usage of blacklist with excludelist for IWYUThorsten Behrens
2019-04-26tdf#42949 Fix IWYU warnings in jvmfwk/ & jvmaccess/Gabor Kelemen
2018-05-25Improve re-throwing of UNO exceptionsNoel Grandin
2018-03-25Use for-range loops in some modulesJulien Nabet