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Diffstat (limited to 'sw/source/core/docnode/finalthreadmanager.cxx')
-rw-r--r-- | sw/source/core/docnode/finalthreadmanager.cxx | 429 |
1 files changed, 429 insertions, 0 deletions
diff --git a/sw/source/core/docnode/finalthreadmanager.cxx b/sw/source/core/docnode/finalthreadmanager.cxx new file mode 100644 index 000000000..80ddd75c3 --- /dev/null +++ b/sw/source/core/docnode/finalthreadmanager.cxx @@ -0,0 +1,429 @@ +/* -*- 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 <finalthreadmanager.hxx> + +#include <osl/diagnose.h> +#include <osl/thread.hxx> +#include <pausethreadstarting.hxx> +#include <swthreadjoiner.hxx> + +#include <com/sun/star/frame/Desktop.hpp> +#include <com/sun/star/frame/TerminationVetoException.hpp> +#include <rtl/ustring.hxx> +#include <cppuhelper/supportsservice.hxx> + +/** thread to cancel a give list of cancellable jobs + + helper class for FinalThreadManager +*/ +class CancelJobsThread : public osl::Thread +{ + public: + explicit CancelJobsThread( const std::list< css::uno::Reference< css::util::XCancellable > >& rJobs ) + : osl::Thread(), + maMutex(), + maJobs( rJobs ), + mbAllJobsCancelled( false ), + mbStopped( false ) + { + } + + void addJobs( std::list< css::uno::Reference< css::util::XCancellable > >& rJobs ); + bool allJobsCancelled() const; + void stopWhenAllJobsCancelled(); + + private: + bool existJobs() const; + + css::uno::Reference< css::util::XCancellable > getNextJob(); + + bool stopped() const; + virtual void SAL_CALL run() override; + mutable osl::Mutex maMutex; + + std::list< css::uno::Reference< css::util::XCancellable > > maJobs; + + bool mbAllJobsCancelled; + bool mbStopped; +}; + +void CancelJobsThread::addJobs( std::list< css::uno::Reference< css::util::XCancellable > >& rJobs ) +{ + osl::MutexGuard aGuard(maMutex); + + maJobs.insert( maJobs.end(), rJobs.begin(), rJobs.end() ); + mbAllJobsCancelled = !maJobs.empty(); +} + +bool CancelJobsThread::existJobs() const +{ + osl::MutexGuard aGuard(maMutex); + + return !maJobs.empty(); +} + +bool CancelJobsThread::allJobsCancelled() const +{ + osl::MutexGuard aGuard(maMutex); + + return maJobs.empty() && mbAllJobsCancelled; +} + +void CancelJobsThread::stopWhenAllJobsCancelled() +{ + osl::MutexGuard aGuard(maMutex); + + mbStopped = true; +} + +css::uno::Reference< css::util::XCancellable > CancelJobsThread::getNextJob() +{ + css::uno::Reference< css::util::XCancellable > xRet; + + { + osl::MutexGuard aGuard(maMutex); + + if ( !maJobs.empty() ) + { + xRet = maJobs.front(); + maJobs.pop_front(); + } + } + + return xRet; +} + +bool CancelJobsThread::stopped() const +{ + osl::MutexGuard aGuard(maMutex); + + return mbStopped; +} + +void SAL_CALL CancelJobsThread::run() +{ + osl_setThreadName("sw CancelJobsThread"); + + while ( !stopped() ) + { + while ( existJobs() ) + { + css::uno::Reference< css::util::XCancellable > aJob( getNextJob() ); + if ( aJob.is() ) + aJob->cancel(); + } + + mbAllJobsCancelled = true; + + { + osl::Thread::wait(std::chrono::seconds(1)); + } + } +} + +/** thread to terminate office, when all jobs are cancelled. + + helper class for FinalThreadManager +*/ +class TerminateOfficeThread : public osl::Thread +{ + public: + TerminateOfficeThread( CancelJobsThread const & rCancelJobsThread, + css::uno::Reference< css::uno::XComponentContext > const & xContext ) + : osl::Thread(), + maMutex(), + mrCancelJobsThread( rCancelJobsThread ), + mbStopOfficeTermination( false ), + mxContext( xContext ) + { + } + + void StopOfficeTermination(); + + private: + virtual void SAL_CALL run() override; + virtual void SAL_CALL onTerminated() override; + bool OfficeTerminationStopped(); + void PerformOfficeTermination(); + + osl::Mutex maMutex; + + const CancelJobsThread& mrCancelJobsThread; + bool mbStopOfficeTermination; + + css::uno::Reference< css::uno::XComponentContext > mxContext; +}; + +void TerminateOfficeThread::StopOfficeTermination() +{ + osl::MutexGuard aGuard(maMutex); + + mbStopOfficeTermination = true; +} + +bool TerminateOfficeThread::OfficeTerminationStopped() +{ + osl::MutexGuard aGuard(maMutex); + + return mbStopOfficeTermination; +} + +void SAL_CALL TerminateOfficeThread::run() +{ + osl_setThreadName("sw TerminateOfficeThread"); + + while ( !OfficeTerminationStopped() ) + { + osl::MutexGuard aGuard(maMutex); + + if ( mrCancelJobsThread.allJobsCancelled() ) + break; + } + + if ( !OfficeTerminationStopped() ) + PerformOfficeTermination(); +} + +void TerminateOfficeThread::PerformOfficeTermination() +{ + css::uno::Reference< css::frame::XDesktop2 > xDesktop = css::frame::Desktop::create(mxContext); + + css::uno::Reference< css::container::XElementAccess > xList = xDesktop->getFrames(); + if ( !xList.is() ) + { + OSL_FAIL( "<TerminateOfficeThread::PerformOfficeTermination()> - no XElementAccess!" ); + return; + } + + if ( !xList->hasElements() ) + { + if ( !OfficeTerminationStopped() ) + xDesktop->terminate(); + } +} + +void SAL_CALL TerminateOfficeThread::onTerminated() +{ + if ( OfficeTerminationStopped() ) + delete this; +} + +FinalThreadManager::FinalThreadManager(css::uno::Reference< css::uno::XComponentContext > const & context) + : m_xContext(context), + maMutex(), + maThreads(), + mpTerminateOfficeThread( nullptr ), + mbRegisteredAtDesktop( false ) +{ + +} + +void FinalThreadManager::registerAsListenerAtDesktop() +{ + css::uno::Reference< css::frame::XDesktop2 > xDesktop = css::frame::Desktop::create(m_xContext); + xDesktop->addTerminateListener( css::uno::Reference< css::frame::XTerminateListener >( static_cast< cppu::OWeakObject* >( this ), css::uno::UNO_QUERY ) ); +} + +FinalThreadManager::~FinalThreadManager() +{ + if ( mpPauseThreadStarting ) + { + mpPauseThreadStarting.reset(); + } + + if ( mpTerminateOfficeThread != nullptr ) + { + mpTerminateOfficeThread->StopOfficeTermination(); // thread kills itself. + mpTerminateOfficeThread = nullptr; + } + + if ( !maThreads.empty() ) + { + OSL_FAIL( "<FinalThreadManager::~FinalThreadManager()> - still registered jobs are existing -> perform cancellation" ); + cancelAllJobs(); + } + + if ( mpCancelJobsThread != nullptr ) + { + if ( !mpCancelJobsThread->allJobsCancelled() ) + OSL_FAIL( "<FinalThreadManager::~FinalThreadManager()> - cancellation of registered jobs not yet finished -> wait for its finish" ); + + mpCancelJobsThread->stopWhenAllJobsCancelled(); + mpCancelJobsThread->join(); + mpCancelJobsThread.reset(); + } +} + +// com.sun.star.uno.XServiceInfo: +OUString SAL_CALL FinalThreadManager::getImplementationName() +{ + return "com.sun.star.util.comp.FinalThreadManager"; +} + +sal_Bool SAL_CALL FinalThreadManager::supportsService(OUString const & serviceName) +{ + return cppu::supportsService(this, serviceName); +} + +css::uno::Sequence< OUString > SAL_CALL FinalThreadManager::getSupportedServiceNames() +{ + return { "com.sun.star.util.JobManager" }; +} + +// css::util::XJobManager: +void SAL_CALL FinalThreadManager::registerJob(const css::uno::Reference< css::util::XCancellable > & Job) +{ + osl::MutexGuard aGuard(maMutex); + + maThreads.push_back( Job ); + + if ( !mbRegisteredAtDesktop ) + { + registerAsListenerAtDesktop(); + mbRegisteredAtDesktop = true; + } +} + +void SAL_CALL FinalThreadManager::releaseJob(const css::uno::Reference< css::util::XCancellable > & Job) +{ + osl::MutexGuard aGuard(maMutex); + + maThreads.remove( Job ); +} + +void SAL_CALL FinalThreadManager::cancelAllJobs() +{ + std::list< css::uno::Reference< css::util::XCancellable > > aThreads; + { + osl::MutexGuard aGuard(maMutex); + + aThreads.insert( aThreads.end(), maThreads.begin(), maThreads.end() ); + maThreads.clear(); + } + + if ( !aThreads.empty() ) + { + osl::MutexGuard aGuard(maMutex); + + if ( mpCancelJobsThread == nullptr ) + { + mpCancelJobsThread.reset(new CancelJobsThread( aThreads )); + if ( !mpCancelJobsThread->create() ) + { + mpCancelJobsThread.reset(); + for (auto const& elem : aThreads) + { + elem->cancel(); + } + aThreads.clear(); + } + } + else + mpCancelJobsThread->addJobs( aThreads ); + } +} + +// css::frame::XTerminateListener +void SAL_CALL FinalThreadManager::queryTermination( const css::lang::EventObject& ) +{ + osl::MutexGuard aGuard(maMutex); + + cancelAllJobs(); + // Sleep 1 second to give the thread for job cancellation some time. + // Probably, all started threads have already finished its work. + if ( mpCancelJobsThread != nullptr && + !mpCancelJobsThread->allJobsCancelled() ) + { + osl::Thread::wait(std::chrono::seconds(1)); + } + + if ( mpCancelJobsThread != nullptr && + !mpCancelJobsThread->allJobsCancelled() ) + { + if ( mpTerminateOfficeThread != nullptr ) + { + if ( mpTerminateOfficeThread->isRunning() ) + mpTerminateOfficeThread->StopOfficeTermination(); // thread kills itself. + else + delete mpTerminateOfficeThread; + + mpTerminateOfficeThread = nullptr; + } + mpTerminateOfficeThread = new TerminateOfficeThread( *mpCancelJobsThread, + m_xContext ); + if ( !mpTerminateOfficeThread->create() ) + { + delete mpTerminateOfficeThread; + mpTerminateOfficeThread = nullptr; + } + + throw css::frame::TerminationVetoException(); + } + + mpPauseThreadStarting.reset(new SwPauseThreadStarting()); +} + +void SAL_CALL FinalThreadManager::cancelTermination( const css::lang::EventObject& ) +{ + mpPauseThreadStarting.reset(); +} + +void SAL_CALL FinalThreadManager::notifyTermination( const css::lang::EventObject& ) +{ + if ( mpTerminateOfficeThread != nullptr ) + { + if ( mpTerminateOfficeThread->isRunning() ) + mpTerminateOfficeThread->StopOfficeTermination(); // thread kills itself. + else + delete mpTerminateOfficeThread; + + mpTerminateOfficeThread = nullptr; + } + + if ( !maThreads.empty() ) + cancelAllJobs(); + + if ( mpCancelJobsThread != nullptr ) + { + mpCancelJobsThread->stopWhenAllJobsCancelled(); + mpCancelJobsThread->join(); + mpCancelJobsThread.reset(); + } + + // get reference of this + css::uno::Reference< css::uno::XInterface > aOwnRef( static_cast< cppu::OWeakObject* >( this )); + // notify <SwThreadJoiner> to release its reference + SwThreadJoiner::ReleaseThreadJoiner(); +} + +// ::com::sun:star::lang::XEventListener (inherited via css::frame::XTerminateListener) +void SAL_CALL FinalThreadManager::disposing( const css::lang::EventObject& ) +{ + // nothing to do, because instance doesn't hold any references of observed objects +} + +extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface* +com_sun_star_util_comp_FinalThreadManager_get_implementation(css::uno::XComponentContext* context, + css::uno::Sequence<css::uno::Any> const &) +{ + return cppu::acquire(new FinalThreadManager(context)); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |