| /************************************************************** |
| * |
| * 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 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| *************************************************************/ |
| |
| |
| #ifndef _CPPUHELPER_WEAK_HXX_ |
| #define _CPPUHELPER_WEAK_HXX_ |
| |
| #include <osl/interlck.h> |
| #include <rtl/alloc.h> |
| #include <cppuhelper/weakref.hxx> |
| #include <cppuhelper/queryinterface.hxx> |
| #ifndef _COM_SUN_STAR_UNO_WEAK_HPP_ |
| #include <com/sun/star/uno/XWeak.hpp> |
| #endif |
| |
| |
| namespace cppu |
| { |
| |
| /** @internal */ |
| class OWeakConnectionPoint; |
| |
| /** Base class to implement an UNO object supporting weak references, i.e. the object can be held |
| weakly (by a ::com::sun::star::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 OWeakObject : public ::com::sun::star::uno::XWeak |
| { |
| /** @internal */ |
| 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() SAL_THROW( (::com::sun::star::uno::RuntimeException) ); |
| |
| /** disposes and resets m_pWeakConnectionPoint |
| @precond |
| m_refCount equals 0 |
| */ |
| void disposeWeakConnectionPoint(); |
| |
| /** reference count. |
| |
| @attention |
| Don't modify manually! Use acquire() and release(). |
| */ |
| oslInterlockedCount m_refCount; |
| |
| /** Container of all weak reference listeners and the connection point from the weak reference. |
| @internal |
| */ |
| OWeakConnectionPoint * m_pWeakConnectionPoint; |
| |
| /** reserved for future use. do not use. |
| @internal |
| */ |
| void * m_pReserved; |
| |
| public: |
| // these are here to force memory de/allocation to sal lib. |
| /** @internal */ |
| inline static void * SAL_CALL operator new( size_t nSize ) SAL_THROW( () ) |
| { return ::rtl_allocateMemory( nSize ); } |
| /** @internal */ |
| inline static void SAL_CALL operator delete( void * pMem ) SAL_THROW( () ) |
| { ::rtl_freeMemory( pMem ); } |
| /** @internal */ |
| inline static void * SAL_CALL operator new( size_t, void * pMem ) SAL_THROW( () ) |
| { return pMem; } |
| /** @internal */ |
| inline static void SAL_CALL operator delete( void *, void * ) SAL_THROW( () ) |
| {} |
| |
| #ifdef _MSC_VER |
| /** Default Constructor. Sets the reference count to zero. |
| Accidentally occurs in msvc mapfile = > had to be outlined. |
| */ |
| OWeakObject() SAL_THROW( () ); |
| #else |
| /** Default Constructor. Sets the reference count to zero. |
| */ |
| inline OWeakObject() SAL_THROW( () ) |
| : m_refCount( 0 ) |
| , m_pWeakConnectionPoint( 0 ) |
| {} |
| #endif |
| /** Dummy copy constructor. Set the reference count to zero. |
| |
| @param rObj dummy param |
| */ |
| inline OWeakObject( const OWeakObject & ) SAL_THROW( () ) |
| : com::sun::star::uno::XWeak() |
| , m_refCount( 0 ) |
| , m_pWeakConnectionPoint( 0 ) |
| {} |
| /** Dummy assignment operator. Does not affect reference count. |
| |
| @return this OWeakObject |
| */ |
| inline OWeakObject & SAL_CALL operator = ( const OWeakObject &) |
| SAL_THROW( () ) |
| { 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 ::com::sun::star::uno::Any SAL_CALL queryInterface( |
| const ::com::sun::star::uno::Type & rType ) |
| throw (::com::sun::star::uno::RuntimeException); |
| /** increasing m_refCount |
| */ |
| virtual void SAL_CALL acquire() |
| throw (); |
| /** decreasing m_refCount |
| */ |
| virtual void SAL_CALL release() |
| throw (); |
| |
| /** XWeak::queryAdapter() implementation |
| |
| @return a ::com::sun::star::uno::XAdapter reference |
| */ |
| virtual ::com::sun::star::uno::Reference< ::com::sun::star::uno::XAdapter > SAL_CALL queryAdapter() |
| throw (::com::sun::star::uno::RuntimeException); |
| |
| /** Cast operator to XInterface reference. |
| |
| @return XInterface reference |
| */ |
| inline SAL_CALL operator ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface > () SAL_THROW( () ) |
| { return this; } |
| }; |
| |
| } |
| |
| #endif |
| |
| |