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+/* -*- 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: */