Ziele Untersuchung
mit Columbo Integrität von
Datenbanken Interaktion und
Portierbarkeit Ergonomie der
Schnittstellen

Angebot Produkte Projekt Beratung

Mittel Analytik Modellierung Sprachen Algebra Logik Hardware Denken Kreativität

Zusammenhänge Gesellschaft Wirtschaft Branche Firma


products/Sources/formale Sprachen/C/LibreOffice/cppuhelper/source/ (Office von Apache Version 25.8.3.2^©) Datei vom 5.10.2025 mit Größe 17 kB

Quelle interfacecontainer.cxx Sprache: C

/* -*- 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 .
*/

#include <cppuhelper/interfacecontainer.hxx>
#include <cppuhelper/propshlp.hxx>
#include <comphelper/sequence.hxx>

#include <o3tl/safeint.hxx>
#include <osl/diagnose.h>
#include <osl/mutex.hxx>
#include <sal/log.hxx>

#include <memory>

#include <com/sun/star/lang/XEventListener.hpp>

using namespace osl;
using namespace com::sun::star::uno;
using namespace com::sun::star::lang;

namespace cppu
{

OInterfaceIteratorHelper::OInterfaceIteratorHelper( OInterfaceContainerHelper & ;rCont_ )
    : rCont( rCont_ )
{
    MutexGuard aGuard( rCont.rMutex );
    if( rCont.bInUse )
        // worst case, two iterators at the same time
        rCont.copyAndResetInUse();
    bIsList = rCont_.bIsList;
    aData = rCont_.aData;
    if( bIsList )
    {
        rCont.bInUse = true;
        nRemain = aData.pAsVector->size();
    }
    else if( aData.pAsInterface )
    {
        aData.pAsInterface->acquire();
        nRemain = 1;
    }
    else
        nRemain = 0;
}

OInterfaceIteratorHelper::~OInterfaceIteratorHelper()
{
    bool bShared;
    {
    MutexGuard aGuard( rCont.rMutex );
    // bResetInUse protect the iterator against recursion
    bShared = aData.pAsVector == rCont.aData.pAsVector && rCont.bIsList;
    if( bShared )
    {
        OSL_ENSURE( rCont.bInUse, "OInterfaceContainerHelper must be in use" );
        rCont.bInUse = false;
    }
    }

    if( !bShared )
    {
        if( bIsList )
            // Sequence owned by the iterator
            delete aData.pAsVector;
        else if( aData.pAsInterface )
            // Interface is acquired by the iterator
            aData.pAsInterface->release();
    }
}

XInterface * OInterfaceIteratorHelper::next()
{
    if( nRemain )
    {
        nRemain--;
        if( bIsList )
            // typecase to const,so the getArray method is faster
            return (*aData.pAsVector)[nRemain].get();
        if( aData.pAsInterface )
            return aData.pAsInterface;
    }
    // exception
    return nullptr;
}

void OInterfaceIteratorHelper::remove()
{
    if( bIsList )
    {
        OSL_ASSERT( nRemain >= 0 &&
                    o3tl::make_unsigned(nRemain) < aData.pAsVector->size() );
        XInterface * p = (*aData.pAsVector)[nRemain].get();
        rCont.removeInterface( * reinterpret_cast< const Reference< XInterface > * >( &p ) );
    }
    else
    {
        OSL_ASSERT( 0 == nRemain );
        rCont.removeInterface( * reinterpret_cast< const Reference< XInterface > * >(&aData.pAsInterface));
    }
}

OInterfaceContainerHelper::OInterfaceContainerHelper( Mutex & rMutex_ )
    : rMutex( rMutex_ )
    , bInUse( false )
    , bIsList( false )
{
}

OInterfaceContainerHelper::~OInterfaceContainerHelper()
{
    OSL_ENSURE( !bInUse, "~OInterfaceContainerHelper but is in use" );
    if( bIsList )
        delete aData.pAsVector;
    else if( aData.pAsInterface )
        aData.pAsInterface->release();
}

sal_Int32 OInterfaceContainerHelper::getLength() const
{
    MutexGuard aGuard( rMutex );
    if( bIsList )
        return aData.pAsVector->size();
    if( aData.pAsInterface )
        return 1;
    return 0;
}

Sequence< Reference<XInterface> > OInterfaceContainerHelper::getElements() const
{
    MutexGuard aGuard( rMutex );
    if( bIsList )
        return comphelper::containerToSequence(*aData.pAsVector);
    if( aData.pAsInterface )
    {
        Reference<XInterface> x( aData.pAsInterface );
        return Sequence< Reference< XInterface > >( &x, 1 );
    }
    return Sequence< Reference< XInterface > >();
}

void OInterfaceContainerHelper::copyAndResetInUse()
{
    OSL_ENSURE( bInUse, "OInterfaceContainerHelper not in use" );
    if( bInUse )
    {
        // this should be the worst case. If an iterator is active
        // and a new Listener is added.
        if( bIsList )
            aData.pAsVector= new std::vector< Reference< XInterface > >( *aData.pAsVector );
        else if( aData.pAsInterface )
            aData.pAsInterface->acquire();

        bInUse = false;
    }
}

sal_Int32 OInterfaceContainerHelper::addInterface( const Reference<XInterface> & rListener )
{
    SAL_WARN_IF( !rListener.is(), "cppuhelper", "rListener is empty" );
    MutexGuard aGuard( rMutex );
    if( bInUse )
        copyAndResetInUse();

    if( bIsList )
    {
        aData.pAsVector->push_back(rListener);
        return aData.pAsVector->size();
    }
    if( aData.pAsInterface )
    {
        Reference<XInterface> tmp(aData.pAsInterface);
        aData.pAsInterface->release();
        aData.pAsVector = new std::vector<Reference<XInterface>>(2);
        (*aData.pAsVector)[0] = std::move(tmp);
        (*aData.pAsVector)[1] = rListener;
        bIsList = true;
        return 2;
    }
    aData.pAsInterface = rListener.get();
    if( rListener.is() )
        rListener->acquire();
    return 1;
}

sal_Int32 OInterfaceContainerHelper::removeInterface( const Reference<XInterface> & ;rListener )
{
    SAL_WARN_IF( !rListener.is(), "cppuhelper", "rListener is empty" );
    MutexGuard aGuard( rMutex );
    if( bInUse )
        copyAndResetInUse();

    if( bIsList )
    {
        // It is not valid to compare the pointer directly, but it's faster.
        auto findIt = std::find_if(aData.pAsVector->begin(), aData.pAsVector->end(),
                    [&](const Reference<XInterface>& r)
                    { return r.get() == rListener.get(); });
        if (findIt != aData.pAsVector->end())
        {
            aData.pAsVector->erase(findIt);
        }
        else
        {
            // interface not found, use the correct compare method
            for( auto it = aData.pAsVector->begin(); it != aData.pAsVector->end(); ++it )
            {
                if( *it == rListener )
                {
                    aData.pAsVector->erase(it);
                    break;
                }
            }
        }

        if( aData.pAsVector->size() == 1 )
        {
            XInterface * p = (*aData.pAsVector)[0].get();
            p->acquire();
            delete aData.pAsVector;
            aData.pAsInterface = p;
            bIsList = false;
            return 1;
        }
        return aData.pAsVector->size();
    }
    if( aData.pAsInterface && Reference<XInterface>( aData.pAsInterface ) == rListener )
    {
        aData.pAsInterface->release();
        aData.pAsInterface = nullptr;
    }
    return aData.pAsInterface ? 1 : 0;
}

void OInterfaceContainerHelper::disposeAndClear( const EventObject & rEvt )
{
    ClearableMutexGuard aGuard( rMutex );
    OInterfaceIteratorHelper aIt( *this );
    // Release container, in case new entries come while disposing
    OSL_ENSURE( !bIsList || bInUse, "OInterfaceContainerHelper not in use" );
    if( !bIsList && aData.pAsInterface )
        aData.pAsInterface->release();
    // set the member to null, use the iterator to delete the values
    aData.pAsInterface = nullptr;
    bIsList = false;
    bInUse = false;
    aGuard.clear();
    while( aIt.hasMoreElements() )
    {
        try
        {
            Reference<XEventListener > xLst( aIt.next(), UNO_QUERY );
            if( xLst.is() )
                xLst->disposing( rEvt );
        }
        catch ( RuntimeException & )
        {
            // be robust, if e.g. a remote bridge has disposed already.
            // there is no way to delegate the error to the caller :o(.
        }
    }
}

void OInterfaceContainerHelper::clear()
{
    MutexGuard aGuard( rMutex );
    // Release container, in case new entries come while disposing
    OSL_ENSURE( !bIsList || bInUse, "OInterfaceContainerHelper not in use" );
    if (bInUse)
        copyAndResetInUse();
    if (bIsList)
        delete aData.pAsVector;
    else if (aData.pAsInterface)
        aData.pAsInterface->release();
    aData.pAsInterface = nullptr;
    bIsList = false;
}

// specialized class for type

typedef std::vector< std::pair < Type , void* > > t_type2ptr;

OMultiTypeInterfaceContainerHelper::OMultiTypeInterfaceContainerHelper( Mutex & ;rMutex_ )
    : rMutex( rMutex_ )
{
    m_pMap = new t_type2ptr;
}

OMultiTypeInterfaceContainerHelper::~OMultiTypeInterfaceContainerHelper()
{
    t_type2ptr * pMap = static_cast<t_type2ptr *>(m_pMap);

    for (auto& rItem : *pMap)
    {
        delete static_cast<OInterfaceContainerHelper*>(rItem.second);
        rItem.second = nullptr;
    }
    delete pMap;
}

Sequence< Type > OMultiTypeInterfaceContainerHelper::getContainedTypes() const
{
    t_type2ptr * pMap = static_cast<t_type2ptr *>(m_pMap);
    t_type2ptr::size_type nSize;

    ::osl::MutexGuard aGuard( rMutex );
    nSize = pMap->size();
    if( nSize )
    {
        css::uno::Sequence< Type > aInterfaceTypes( nSize );
        Type * pArray = aInterfaceTypes.getArray();

        sal_Int32 i = 0;
        for (const auto& rItem : *pMap)
        {
            // are interfaces added to this container?
            if( static_cast<OInterfaceContainerHelper*>(rItem.second)->getLength() )
                // yes, put the type in the array
                pArray[i++] = rItem.first;
        }
        if( static_cast<t_type2ptr::size_type>(i) != nSize ) {
            // may be empty container, reduce the sequence to the right size
            aInterfaceTypes = css::uno::Sequence< Type >( pArray, i );
        }
        return aInterfaceTypes;
    }
    return css::uno::Sequence< Type >();
}

static t_type2ptr::iterator findType(t_type2ptr *pMap, const Type & rKey )
{
    return std::find_if(pMap->begin(), pMap->end(),
        [&rKey](const t_type2ptr::value_type& rItem) { return rItem.first == rKey; });
}

OInterfaceContainerHelper * OMultiTypeInterfaceContainerHelper::getContainer( const Type & rKey ) const
{
    ::osl::MutexGuard aGuard( rMutex );

    t_type2ptr * pMap = static_cast<t_type2ptr *>(m_pMap);
    t_type2ptr::iterator iter = findType( pMap, rKey );
    if( iter != pMap->end() )
            return static_cast<OInterfaceContainerHelper*>((*iter).second);
    return nullptr;
}

sal_Int32 OMultiTypeInterfaceContainerHelper::addInterface(
    const Type & rKey, const Reference< XInterface > & rListener )
{
    ::osl::MutexGuard aGuard( rMutex );
    t_type2ptr * pMap = static_cast<t_type2ptr *>(m_pMap);
    t_type2ptr::iterator iter = findType( pMap, rKey );
    if( iter == pMap->end() )
    {
        OInterfaceContainerHelper * pLC = new OInterfaceContainerHelper( rMutex );
        pMap->push_back(std::pair<Type, void*>(rKey, pLC));
        return pLC->addInterface( rListener );
    }
    return static_cast<OInterfaceContainerHelper*>((*iter).second)->addInterface( rListener );
}

sal_Int32 OMultiTypeInterfaceContainerHelper::removeInterface(
    const Type & rKey, const Reference< XInterface > & rListener )
{
    ::osl::MutexGuard aGuard( rMutex );

    // search container with id nUik
    t_type2ptr * pMap = static_cast<t_type2ptr *>(m_pMap);
    t_type2ptr::iterator iter = findType( pMap, rKey );
        // container found?
    if( iter != pMap->end() )
        return static_cast<OInterfaceContainerHelper*>((*iter).second)->removeInterface( rListener );

    // no container with this id. Always return 0
    return 0;
}

void OMultiTypeInterfaceContainerHelper::disposeAndClear( const EventObject & rEvt )
{
    t_type2ptr::size_type nSize = 0;
    std::unique_ptr<OInterfaceContainerHelper *[]> ppListenerContainers;
    {
        ::osl::MutexGuard aGuard( rMutex );
        t_type2ptr * pMap = static_cast<t_type2ptr *>(m_pMap);
        nSize = pMap->size();
        if( nSize )
        {
            typedef OInterfaceContainerHelper* ppp;
            ppListenerContainers.reset(new ppp[nSize]);
            //ppListenerContainers = new (ListenerContainer*)[nSize];

            t_type2ptr::size_type i = 0;
            for (const auto& rItem : *pMap)
            {
                ppListenerContainers[i++] = static_cast<OInterfaceContainerHelper*>(rItem.second);
            }
        }
    }

    // create a copy, because do not fire event in a guarded section
    for( t_type2ptr::size_type i = 0;
            i < nSize; i++ )
    {
        if( ppListenerContainers[i] )
            ppListenerContainers[i]->disposeAndClear( rEvt );
    }
}

void OMultiTypeInterfaceContainerHelper::clear()
{
    ::osl::MutexGuard aGuard( rMutex );
    t_type2ptr * pMap = static_cast<t_type2ptr *>(m_pMap);

    for (auto& rItem : *pMap)
    {
        static_cast<OInterfaceContainerHelper*>(rItem.second)->clear();
    }
}

// specialized class for long

typedef std::vector< std::pair < sal_Int32 , void* > > t_long2ptr;

static t_long2ptr::iterator findLong(t_long2ptr *pMap, sal_Int32 nKey )
{
    return std::find_if(pMap->begin(), pMap->end(),
        [&nKey](const t_long2ptr::value_type& rItem) { return rItem.first == nKey; });
}

OMultiTypeInterfaceContainerHelperInt32::OMultiTypeInterfaceContainerHelperInt32( Mutex & rMutex_ )
    : m_pMap( nullptr )
    , rMutex( rMutex_ )
{
    // delay pMap allocation until necessary.
}

OMultiTypeInterfaceContainerHelperInt32::~OMultiTypeInterfaceContainerHelperInt32()
{
    if (!m_pMap)
        return;

    t_long2ptr * pMap = static_cast<t_long2ptr *>(m_pMap);

    for (auto& rItem : *pMap)
    {
        delete static_cast<OInterfaceContainerHelper*>(rItem.second);
        rItem.second = nullptr;
    }
    delete pMap;
}

Sequence< sal_Int32 > OMultiTypeInterfaceContainerHelperInt32::getContainedTypes() const
{
    t_long2ptr * pMap = static_cast<t_long2ptr *>(m_pMap);
    t_long2ptr::size_type nSize;

    ::osl::MutexGuard aGuard( rMutex );
    nSize = pMap ? pMap->size() : 0;
    if( nSize )
    {
        css::uno::Sequence< sal_Int32 > aInterfaceTypes( nSize );
        sal_Int32 * pArray = aInterfaceTypes.getArray();

        sal_Int32 i = 0;
        for (const auto& rItem : *pMap)
        {
            // are interfaces added to this container?
            if( static_cast<OInterfaceContainerHelper*>(rItem.second)->getLength() )
                // yes, put the type in the array
                pArray[i++] = rItem.first;
        }
        if( static_cast<t_long2ptr::size_type>(i) != nSize ) {
            // may be empty container, reduce the sequence to the right size
            aInterfaceTypes = css::uno::Sequence< sal_Int32 >( pArray, i );
        }
        return aInterfaceTypes;
    }
    return css::uno::Sequence< sal_Int32 >();
}

OInterfaceContainerHelper * OMultiTypeInterfaceContainerHelperInt32::getContainer( const sal_Int32 & rKey ) const
{
    ::osl::MutexGuard aGuard( rMutex );

    if (!m_pMap)
        return nullptr;
    t_long2ptr * pMap = static_cast<t_long2ptr *>(m_pMap);
    t_long2ptr::iterator iter = findLong( pMap, rKey );
    if( iter != pMap->end() )
            return static_cast<OInterfaceContainerHelper*>((*iter).second);
    return nullptr;
}

sal_Int32 OMultiTypeInterfaceContainerHelperInt32::addInterface(
    const sal_Int32 & rKey, const Reference< XInterface > & rListener )
{
    ::osl::MutexGuard aGuard( rMutex );
    if (!m_pMap)
        m_pMap = new t_long2ptr;
    t_long2ptr * pMap = static_cast<t_long2ptr *>(m_pMap);
    t_long2ptr::iterator iter = findLong( pMap, rKey );
    if( iter == pMap->end() )
    {
        OInterfaceContainerHelper * pLC = new OInterfaceContainerHelper( rMutex );
        pMap->push_back(std::pair< sal_Int32, void* >(rKey, pLC));
        return pLC->addInterface( rListener );
    }
    return static_cast<OInterfaceContainerHelper*>((*iter).second)->addInterface( rListener );
}

sal_Int32 OMultiTypeInterfaceContainerHelperInt32::removeInterface(
    const sal_Int32 & rKey, const Reference< XInterface > & rListener )
{
    ::osl::MutexGuard aGuard( rMutex );

    if (!m_pMap)
        return 0;
    // search container with id nUik
    t_long2ptr * pMap = static_cast<t_long2ptr *>(m_pMap);
    t_long2ptr::iterator iter = findLong( pMap, rKey );
        // container found?
    if( iter != pMap->end() )
        return static_cast<OInterfaceContainerHelper*>((*iter).second)->removeInterface( rListener );

    // no container with this id. Always return 0
    return 0;
}

void OMultiTypeInterfaceContainerHelperInt32::disposeAndClear( const EventObject & rEvt )
{
    t_long2ptr::size_type nSize = 0;
    std::unique_ptr<OInterfaceContainerHelper *[]> ppListenerContainers;
    {
        ::osl::MutexGuard aGuard( rMutex );
        if (!m_pMap)
            return;

        t_long2ptr * pMap = static_cast<t_long2ptr *>(m_pMap);
        nSize = pMap->size();
        if( nSize )
        {
            typedef OInterfaceContainerHelper* ppp;
            ppListenerContainers.reset(new ppp[nSize]);

            t_long2ptr::size_type i = 0;
            for (const auto& rItem : *pMap)
            {
                ppListenerContainers[i++] = static_cast<OInterfaceContainerHelper*>(rItem.second);
            }
        }
    }

    // create a copy, because do not fire event in a guarded section
    for( t_long2ptr::size_type i = 0;
            i < nSize; i++ )
    {
        if( ppListenerContainers[i] )
            ppListenerContainers[i]->disposeAndClear( rEvt );
    }
}

void OMultiTypeInterfaceContainerHelperInt32::clear()
{
    ::osl::MutexGuard aGuard( rMutex );
    if (!m_pMap)
        return;
    t_long2ptr * pMap = static_cast<t_long2ptr *>(m_pMap);

    for (auto& rItem : *pMap)
    {
        static_cast<OInterfaceContainerHelper*>(rItem.second)->clear();
    }
}

}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */

quality99%

¤ Dauer der Verarbeitung: 0.19 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.