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51d4301899
* only call this->abandonAndWait() when not in main thread (also slack discussion MS/KB) * make sure web data service start to read even if setup reader signal was missed * add timestamp to setupreader to detect "recently read" in case signal is missed
85 lines
2.6 KiB
C++
85 lines
2.6 KiB
C++
/* Copyright (C) 2013
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* swift project Community / Contributors
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*
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* This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
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* directory of this distribution and at http://www.swift-project.org/license.html. No part of swift project,
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* including this file, may be copied, modified, propagated, or distributed except according to the terms
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* contained in the LICENSE file.
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*/
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#ifndef BLACKMISC_THREADED_READER_H
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#define BLACKMISC_THREADED_READER_H
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//! \file
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#include "blackmiscexport.h"
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#include "blackmisc/network/urllist.h"
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#include "blackmisc/network/entityflags.h"
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#include "worker.h"
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#include <QReadWriteLock>
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#include <QDateTime>
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#include <QTimer>
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#include <QNetworkReply>
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#include <QCoreApplication>
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#include <atomic>
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namespace BlackMisc
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{
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//! Support for threaded based reading and parsing tasks such
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//! as data files via http, or file system and parsing (such as FSX models)
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class BLACKMISC_EXPORT CThreadedReader : public CContinuousWorker
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{
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public:
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//! Destructor
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virtual ~CThreadedReader();
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//! Thread safe, set update timestamp
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//! \threadsafe
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QDateTime getUpdateTimestamp() const;
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//! Thread safe, set update timestamp
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//! \threadsafe
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void setUpdateTimestamp(const QDateTime &updateTimestamp = QDateTime::currentDateTimeUtc());
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//! Was setup read within last xx milliseconds
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//! \threadsafe
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bool updatedWithinLastMs(qint64 timeLastMs);
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//! Request new reading
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//! \note override as required, default is to call initialize()
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virtual void requestReload();
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//! Set the update time
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//! \param updatePeriodMs <=0 stops the timer
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//! \threadsafe
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void setInterval(int updatePeriodMs);
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//! Get the timer interval (ms)
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//! \threadsafe
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int interval() const;
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public slots:
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//! Graceful shutdown
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//! \threadsafe
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void gracefulShutdown();
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protected:
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QTimer *m_updateTimer = nullptr; //!< update timer
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mutable QReadWriteLock m_lock {QReadWriteLock::Recursive}; //!< lock which can be used from the derived classes
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//! Constructor
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CThreadedReader(QObject *owner, const QString &name);
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//! When was reply last modified, -1 if N/A
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qint64 lastModifiedMsSinceEpoch(QNetworkReply *nwReply) const;
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//! Make sure everthing runs correctly in own thread
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void threadAssertCheck() const;
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private:
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QDateTime m_updateTimestamp; //!< when file/resource was read
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};
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} // namespace
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#endif // guard
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