/* -*- 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 .
*/
Any OComponentHelper::queryInterface( Type const & rType )
{ return OWeakAggObject::queryInterface( rType );
}
Any OComponentHelper::queryAggregation( Type const & rType )
{ if (rType == cppu::UnoType<lang::XComponent>::get())
{ void * p = static_cast< lang::XComponent * >( this ); return Any( &p, rType );
} if (rType == cppu::UnoType<lang::XTypeProvider>::get())
{ void * p = static_cast< lang::XTypeProvider * >( this ); return Any( &p, rType );
} return OWeakAggObject::queryAggregation( rType );
} void OComponentHelper::acquire() noexcept
{
OWeakAggObject::acquire();
}
void OComponentHelper::release() noexcept
{
Reference<XInterface > x( xDelegator ); if (! x.is())
{ if (osl_atomic_decrement( &m_refCount ) == 0)
{ if (! rBHelper.bDisposed)
{ // *before* again incrementing our ref count, ensure that our weak connection point // will not create references to us anymore (via XAdapter::queryAdapted)
disposeWeakConnectionPoint();
Reference<XInterface > xHoldAlive( *this ); // First dispose try
{
dispose();
} catch (css::uno::RuntimeException & exc)
{ // release should not throw exceptions
SAL_WARN( "cppuhelper", exc );
}
// only the alive ref holds the object
OSL_ASSERT( m_refCount == 1 ); // destroy the object if xHoldAlive decrement the refcount to 0 return;
}
} // restore the reference count
osl_atomic_increment( &m_refCount );
}
OWeakAggObject::release();
}
// XComponent void OComponentHelper::dispose()
{ // An frequently programming error is to release the last // reference to this object in the disposing message. // Make it robust, hold a self Reference.
Reference<XComponent > xSelf( this );
// Guard dispose against multiple threading // Remark: It is an error to call dispose more than once bool bDoDispose = false;
{
MutexGuard aGuard( rBHelper.rMutex ); if( !rBHelper.bDisposed && !rBHelper.bInDispose )
{ // only one call go into this section
rBHelper.bInDispose = true;
bDoDispose = true;
}
}
// Do not hold the mutex because we are broadcasting if( bDoDispose )
{ // Create an event with this as sender try
{ try
{
EventObject aEvt;
aEvt.Source = Reference<XInterface >::query( static_cast<XComponent *>(this) ); // inform all listeners to release this object // The listener container are automatically cleared
rBHelper.aLC.disposeAndClear( aEvt ); // notify subclasses to do their dispose
disposing();
} catch (...)
{
MutexGuard aGuard( rBHelper.rMutex ); // bDispose and bInDisposing must be set in this order:
rBHelper.bDisposed = true;
rBHelper.bInDispose = false; throw;
}
MutexGuard aGuard( rBHelper.rMutex ); // bDispose and bInDisposing must be set in this order:
rBHelper.bDisposed = true;
rBHelper.bInDispose = false;
} catch (RuntimeException &)
{ throw;
} catch (Exception & exc)
{
css::uno::Any anyEx = cppu::getCaughtException(); throw lang::WrappedTargetRuntimeException( "unexpected UNO exception caught: " + exc.Message,
nullptr, anyEx );
}
} else
{ // in a multithreaded environment, it can't be avoided // that dispose is called twice. // However this condition is traced, because it MAY indicate an error.
SAL_WARN("cppuhelper", "OComponentHelper::dispose() - dispose called twice" );
}
}
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