| /************************************************************** |
| * |
| * 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. |
| * |
| *************************************************************/ |
| |
| |
| |
| // MARKER(update_precomp.py): autogen include statement, do not remove |
| #include "precompiled_cppuhelper.hxx" |
| #include <osl/mutex.hxx> |
| #ifndef _CPPU_WEAKAGG_HXX_ |
| #include <cppuhelper/weakagg.hxx> |
| #endif |
| #ifndef _CPPU_HELPER_INTERFACECONTAINER_HXX_ |
| #include <cppuhelper/interfacecontainer.hxx> |
| #endif |
| #include "cppuhelper/exc_hlp.hxx" |
| |
| using namespace osl; |
| using namespace com::sun::star::uno; |
| |
| /** */ //for docpp |
| namespace cppu |
| { |
| |
| // due to static Reflection destruction from usr, ther must be a mutex leak (#73272#) |
| inline static Mutex & getWeakMutex() SAL_THROW( () ) |
| { |
| static Mutex * s_pMutex = 0; |
| if (! s_pMutex) |
| s_pMutex = new Mutex(); |
| return *s_pMutex; |
| } |
| |
| //------------------------------------------------------------------------ |
| //-- OWeakConnectionPoint ---------------------------------------------------- |
| //------------------------------------------------------------------------ |
| class OWeakConnectionPoint : public XAdapter |
| { |
| public: |
| /** |
| Hold the weak object without an acquire (only the pointer). |
| */ |
| OWeakConnectionPoint( OWeakObject* pObj ) SAL_THROW( () ) |
| : m_aRefCount( 0 ) |
| , m_pObject(pObj) |
| , m_aReferences( getWeakMutex() ) |
| {} |
| |
| // XInterface |
| Any SAL_CALL queryInterface( const Type & rType ) throw(::com::sun::star::uno::RuntimeException); |
| void SAL_CALL acquire() throw(); |
| void SAL_CALL release() throw(); |
| |
| // XAdapter |
| ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface > SAL_CALL queryAdapted() throw(::com::sun::star::uno::RuntimeException); |
| void SAL_CALL addReference( const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XReference >& xRef ) throw(::com::sun::star::uno::RuntimeException); |
| void SAL_CALL removeReference( const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XReference >& xRef ) throw(::com::sun::star::uno::RuntimeException); |
| |
| /// Called from the weak object if the reference count goes to zero. |
| void SAL_CALL dispose() throw(::com::sun::star::uno::RuntimeException); |
| |
| private: |
| OWeakConnectionPoint(OWeakConnectionPoint &); // not defined |
| void operator =(OWeakConnectionPoint &); // not defined |
| |
| virtual ~OWeakConnectionPoint() {} |
| |
| /// The reference counter. |
| oslInterlockedCount m_aRefCount; |
| /// The weak object |
| OWeakObject* m_pObject; |
| /// The container to hold the weak references |
| OInterfaceContainerHelper m_aReferences; |
| }; |
| |
| // XInterface |
| Any SAL_CALL OWeakConnectionPoint::queryInterface( const Type & rType ) |
| throw(com::sun::star::uno::RuntimeException) |
| { |
| return ::cppu::queryInterface( |
| rType, static_cast< XAdapter * >( this ), static_cast< XInterface * >( this ) ); |
| } |
| |
| // XInterface |
| void SAL_CALL OWeakConnectionPoint::acquire() throw() |
| { |
| osl_incrementInterlockedCount( &m_aRefCount ); |
| } |
| |
| // XInterface |
| void SAL_CALL OWeakConnectionPoint::release() throw() |
| { |
| if (! osl_decrementInterlockedCount( &m_aRefCount )) |
| delete this; |
| } |
| |
| void SAL_CALL OWeakConnectionPoint::dispose() throw(::com::sun::star::uno::RuntimeException) |
| { |
| Any ex; |
| OInterfaceIteratorHelper aIt( m_aReferences ); |
| while( aIt.hasMoreElements() ) |
| { |
| try |
| { |
| ((XReference *)aIt.next())->dispose(); |
| } |
| catch (com::sun::star::lang::DisposedException &) {} |
| catch (RuntimeException &) |
| { |
| ex = cppu::getCaughtException(); |
| } |
| } |
| if (ex.hasValue()) |
| { |
| cppu::throwException(ex); |
| } |
| } |
| |
| // XInterface |
| Reference< XInterface > SAL_CALL OWeakConnectionPoint::queryAdapted() throw(::com::sun::star::uno::RuntimeException) |
| { |
| Reference< XInterface > ret; |
| |
| ClearableMutexGuard guard(getWeakMutex()); |
| |
| if (m_pObject) |
| { |
| oslInterlockedCount n = osl_incrementInterlockedCount( &m_pObject->m_refCount ); |
| |
| if (n > 1) |
| { |
| // The refence is incremented. The object cannot be destroyed. |
| // Release the guard at the earliest point. |
| guard.clear(); |
| // WeakObject has a (XInterface *) cast operator |
| ret = *m_pObject; |
| n = osl_decrementInterlockedCount( &m_pObject->m_refCount ); |
| } |
| else |
| // Another thread wait in the dispose method at the guard |
| n = osl_decrementInterlockedCount( &m_pObject->m_refCount ); |
| } |
| |
| return ret; |
| } |
| |
| // XInterface |
| void SAL_CALL OWeakConnectionPoint::addReference(const Reference< XReference >& rRef) |
| throw(::com::sun::star::uno::RuntimeException) |
| { |
| m_aReferences.addInterface( (const Reference< XInterface > &)rRef ); |
| } |
| |
| // XInterface |
| void SAL_CALL OWeakConnectionPoint::removeReference(const Reference< XReference >& rRef) |
| throw(::com::sun::star::uno::RuntimeException) |
| { |
| m_aReferences.removeInterface( (const Reference< XInterface > &)rRef ); |
| } |
| |
| |
| //------------------------------------------------------------------------ |
| //-- OWeakObject ------------------------------------------------------- |
| //------------------------------------------------------------------------ |
| |
| #ifdef _MSC_VER |
| // Accidentally occurs in msvc mapfile = > had to be outlined. |
| OWeakObject::OWeakObject() SAL_THROW( () ) |
| : m_refCount( 0 ), |
| m_pWeakConnectionPoint( 0 ) |
| { |
| } |
| #endif |
| |
| // XInterface |
| Any SAL_CALL OWeakObject::queryInterface( const Type & rType ) throw(::com::sun::star::uno::RuntimeException) |
| { |
| return ::cppu::queryInterface( |
| rType, |
| static_cast< XWeak * >( this ), static_cast< XInterface * >( this ) ); |
| } |
| |
| // XInterface |
| void SAL_CALL OWeakObject::acquire() throw() |
| { |
| osl_incrementInterlockedCount( &m_refCount ); |
| } |
| |
| // XInterface |
| void SAL_CALL OWeakObject::release() throw() |
| { |
| if (osl_decrementInterlockedCount( &m_refCount ) == 0) { |
| // notify/clear all weak-refs before object's dtor is executed |
| // (which may check weak-refs to this object): |
| disposeWeakConnectionPoint(); |
| // destroy object: |
| delete this; |
| } |
| } |
| |
| void OWeakObject::disposeWeakConnectionPoint() |
| { |
| OSL_PRECOND( m_refCount == 0, "OWeakObject::disposeWeakConnectionPoint: only to be called with a ref count of 0!" ); |
| if (m_pWeakConnectionPoint != 0) { |
| OWeakConnectionPoint * const p = m_pWeakConnectionPoint; |
| m_pWeakConnectionPoint = 0; |
| try { |
| p->dispose(); |
| } |
| catch (RuntimeException const& exc) { |
| OSL_ENSURE( |
| false, OUStringToOString( |
| exc.Message, RTL_TEXTENCODING_ASCII_US ).getStr() ); |
| static_cast<void>(exc); |
| } |
| p->release(); |
| } |
| } |
| |
| OWeakObject::~OWeakObject() SAL_THROW( (RuntimeException) ) |
| { |
| } |
| |
| // XWeak |
| Reference< XAdapter > SAL_CALL OWeakObject::queryAdapter() |
| throw (::com::sun::star::uno::RuntimeException) |
| { |
| if (!m_pWeakConnectionPoint) |
| { |
| // only acquire mutex if member is not created |
| MutexGuard aGuard( getWeakMutex() ); |
| if( !m_pWeakConnectionPoint ) |
| { |
| OWeakConnectionPoint * p = new OWeakConnectionPoint(this); |
| p->acquire(); |
| m_pWeakConnectionPoint = p; |
| } |
| } |
| |
| return m_pWeakConnectionPoint; |
| } |
| |
| //------------------------------------------------------------------------ |
| //-- OWeakAggObject ---------------------------------------------------- |
| //------------------------------------------------------------------------ |
| OWeakAggObject::~OWeakAggObject() SAL_THROW( (RuntimeException) ) |
| { |
| } |
| |
| // XInterface |
| void OWeakAggObject::acquire() throw() |
| { |
| Reference<XInterface > x( xDelegator ); |
| if (x.is()) |
| x->acquire(); |
| else |
| OWeakObject::acquire(); |
| } |
| |
| // XInterface |
| void OWeakAggObject::release() throw() |
| { |
| Reference<XInterface > x( xDelegator ); |
| if (x.is()) |
| x->release(); |
| else |
| OWeakObject::release(); |
| } |
| |
| // XInterface |
| Any OWeakAggObject::queryInterface( const Type & rType ) throw(::com::sun::star::uno::RuntimeException) |
| { |
| Reference< XInterface > x( xDelegator ); // harden ref |
| return (x.is() ? x->queryInterface( rType ) : queryAggregation( rType )); |
| |
| // // set rOut to zero, if failed |
| // if( !xDelegator.queryHardRef( aUik, rOut ) ) |
| // { |
| // XInterfaceRef x; |
| // if( !xDelegator.queryHardRef( ((XInterface*)0)->getSmartUik(), x ) ) |
| // // reference is not valid |
| // queryAggregation( aUik, rOut ); |
| // } |
| // return rOut.is(); |
| } |
| |
| // XAggregation |
| Any OWeakAggObject::queryAggregation( const Type & rType ) throw(::com::sun::star::uno::RuntimeException) |
| { |
| return ::cppu::queryInterface( |
| rType, |
| static_cast< XInterface * >( static_cast< OWeakObject * >( this ) ), |
| static_cast< XAggregation * >( this ), |
| static_cast< XWeak * >( this ) ); |
| } |
| |
| // XAggregation |
| void OWeakAggObject::setDelegator( const Reference<XInterface > & rDelegator ) throw(::com::sun::star::uno::RuntimeException) |
| { |
| xDelegator = rDelegator; |
| } |
| |
| } |
| |
| /** */ //for docpp |
| namespace com |
| { |
| /** */ //for docpp |
| namespace sun |
| { |
| /** */ //for docpp |
| namespace star |
| { |
| /** */ //for docpp |
| namespace uno |
| { |
| |
| |
| //------------------------------------------------------------------------ |
| //-- OWeakRefListener ----------------------------------------------------- |
| //------------------------------------------------------------------------ |
| class OWeakRefListener : public XReference |
| { |
| public: |
| OWeakRefListener(const OWeakRefListener& rRef) SAL_THROW( () ); |
| OWeakRefListener(const Reference< XInterface >& xInt) SAL_THROW( () ); |
| virtual ~OWeakRefListener() SAL_THROW( () ); |
| |
| // XInterface |
| Any SAL_CALL queryInterface( const Type & rType ) throw(RuntimeException); |
| void SAL_CALL acquire() throw(); |
| void SAL_CALL release() throw(); |
| |
| // XReference |
| void SAL_CALL dispose() throw(::com::sun::star::uno::RuntimeException); |
| |
| /// The reference counter. |
| oslInterlockedCount m_aRefCount; |
| /// The connection point of the weak object |
| Reference< XAdapter > m_XWeakConnectionPoint; |
| |
| private: |
| OWeakRefListener& SAL_CALL operator=(const OWeakRefListener& rRef) SAL_THROW( () ); |
| }; |
| |
| OWeakRefListener::OWeakRefListener(const OWeakRefListener& rRef) SAL_THROW( () ) |
| : com::sun::star::uno::XReference() |
| , m_aRefCount( 1 ) |
| { |
| try |
| { |
| m_XWeakConnectionPoint = rRef.m_XWeakConnectionPoint; |
| |
| if (m_XWeakConnectionPoint.is()) |
| { |
| m_XWeakConnectionPoint->addReference((XReference*)this); |
| } |
| } |
| catch (RuntimeException &) { OSL_ASSERT( 0 ); } // assert here, but no unexpected() |
| osl_decrementInterlockedCount( &m_aRefCount ); |
| } |
| |
| OWeakRefListener::OWeakRefListener(const Reference< XInterface >& xInt) SAL_THROW( () ) |
| : m_aRefCount( 1 ) |
| { |
| try |
| { |
| Reference< XWeak > xWeak( Reference< XWeak >::query( xInt ) ); |
| |
| if (xWeak.is()) |
| { |
| m_XWeakConnectionPoint = xWeak->queryAdapter(); |
| |
| if (m_XWeakConnectionPoint.is()) |
| { |
| m_XWeakConnectionPoint->addReference((XReference*)this); |
| } |
| } |
| } |
| catch (RuntimeException &) { OSL_ASSERT( 0 ); } // assert here, but no unexpected() |
| osl_decrementInterlockedCount( &m_aRefCount ); |
| } |
| |
| OWeakRefListener::~OWeakRefListener() SAL_THROW( () ) |
| { |
| try |
| { |
| if (m_XWeakConnectionPoint.is()) |
| { |
| acquire(); // dont die again |
| m_XWeakConnectionPoint->removeReference((XReference*)this); |
| } |
| } |
| catch (RuntimeException &) { OSL_ASSERT( 0 ); } // assert here, but no unexpected() |
| } |
| |
| // XInterface |
| Any SAL_CALL OWeakRefListener::queryInterface( const Type & rType ) throw(RuntimeException) |
| { |
| return ::cppu::queryInterface( |
| rType, static_cast< XReference * >( this ), static_cast< XInterface * >( this ) ); |
| } |
| |
| // XInterface |
| void SAL_CALL OWeakRefListener::acquire() throw() |
| { |
| osl_incrementInterlockedCount( &m_aRefCount ); |
| } |
| |
| // XInterface |
| void SAL_CALL OWeakRefListener::release() throw() |
| { |
| if( ! osl_decrementInterlockedCount( &m_aRefCount ) ) |
| delete this; |
| } |
| |
| void SAL_CALL OWeakRefListener::dispose() |
| throw(::com::sun::star::uno::RuntimeException) |
| { |
| Reference< XAdapter > xAdp; |
| { |
| MutexGuard guard(cppu::getWeakMutex()); |
| if( m_XWeakConnectionPoint.is() ) |
| { |
| xAdp = m_XWeakConnectionPoint; |
| m_XWeakConnectionPoint.clear(); |
| } |
| } |
| |
| if( xAdp.is() ) |
| xAdp->removeReference((XReference*)this); |
| } |
| |
| //------------------------------------------------------------------------ |
| //-- WeakReferenceHelper ---------------------------------------------------------- |
| //------------------------------------------------------------------------ |
| WeakReferenceHelper::WeakReferenceHelper(const Reference< XInterface >& xInt) SAL_THROW( () ) |
| : m_pImpl( 0 ) |
| { |
| if (xInt.is()) |
| { |
| m_pImpl = new OWeakRefListener(xInt); |
| m_pImpl->acquire(); |
| } |
| } |
| |
| WeakReferenceHelper::WeakReferenceHelper(const WeakReferenceHelper& rWeakRef) SAL_THROW( () ) |
| : m_pImpl( 0 ) |
| { |
| Reference< XInterface > xInt( rWeakRef.get() ); |
| if (xInt.is()) |
| { |
| m_pImpl = new OWeakRefListener(xInt); |
| m_pImpl->acquire(); |
| } |
| } |
| |
| void WeakReferenceHelper::clear() SAL_THROW( () ) |
| { |
| try |
| { |
| if (m_pImpl) |
| { |
| if (m_pImpl->m_XWeakConnectionPoint.is()) |
| { |
| m_pImpl->m_XWeakConnectionPoint->removeReference( |
| (XReference*)m_pImpl); |
| m_pImpl->m_XWeakConnectionPoint.clear(); |
| } |
| m_pImpl->release(); |
| m_pImpl = 0; |
| } |
| } |
| catch (RuntimeException &) { OSL_ASSERT( 0 ); } // assert here, but no unexpected() |
| } |
| |
| WeakReferenceHelper& WeakReferenceHelper::operator=(const WeakReferenceHelper& rWeakRef) SAL_THROW( () ) |
| { |
| if (this == &rWeakRef) |
| { |
| return *this; |
| } |
| Reference< XInterface > xInt( rWeakRef.get() ); |
| return operator = ( xInt ); |
| } |
| |
| WeakReferenceHelper & SAL_CALL |
| WeakReferenceHelper::operator= (const Reference< XInterface > & xInt) |
| SAL_THROW( () ) |
| { |
| try |
| { |
| clear(); |
| if (xInt.is()) |
| { |
| m_pImpl = new OWeakRefListener(xInt); |
| m_pImpl->acquire(); |
| } |
| } |
| catch (RuntimeException &) { OSL_ASSERT( 0 ); } // assert here, but no unexpected() |
| return *this; |
| } |
| |
| WeakReferenceHelper::~WeakReferenceHelper() SAL_THROW( () ) |
| { |
| clear(); |
| } |
| |
| Reference< XInterface > WeakReferenceHelper::get() const SAL_THROW( () ) |
| { |
| try |
| { |
| Reference< XAdapter > xAdp; |
| { |
| MutexGuard guard(cppu::getWeakMutex()); |
| if( m_pImpl && m_pImpl->m_XWeakConnectionPoint.is() ) |
| xAdp = m_pImpl->m_XWeakConnectionPoint; |
| } |
| |
| if (xAdp.is()) |
| return xAdp->queryAdapted(); |
| } |
| catch (RuntimeException &) { OSL_ASSERT( 0 ); } // assert here, but no unexpected() |
| |
| return Reference< XInterface >(); |
| } |
| |
| } |
| } |
| } |
| } |
| |