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annotate OrthancStone/Sources/Loaders/GenericLoadersContext.h @ 1668:ab1bc8de1798

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refactoring
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 19 Nov 2020 18:39:31 +0100
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Lesser General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Lesser General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Lesser General Public
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18 * License along with this program. If not, see
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19 * <http://www.gnu.org/licenses/>.
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20 **/
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21
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22 #pragma once
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23
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24 #include "../Messages/IMessageEmitter.h"
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25 #include "../Oracle/ThreadedOracle.h"
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26 #include "ILoadersContext.h"
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27 #include "DicomSource.h"
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28 #include "OracleScheduler.h"
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29
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30 #include <boost/thread/recursive_mutex.hpp>
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31
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32 namespace OrthancStone
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33 {
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34 class GenericLoadersContext :
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35 public ILoadersContext,
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36 private IMessageEmitter
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37 {
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38 private:
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39 class Locker;
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40
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41 // "Recursive mutex" is necessary, to be able to run
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42 // "ILoaderFactory" from a message handler triggered by
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43 // "EmitMessage()"
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44 boost::recursive_mutex mutex_;
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45
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46 IObservable oracleObservable_;
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47 std::unique_ptr<ThreadedOracle> oracle_;
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48 boost::shared_ptr<OracleScheduler> scheduler_;
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49
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50 // Necessary to keep the loaders persistent (including global
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51 // function promises), after the function that created them is
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52 // left. This avoids creating one global variable for each loader.
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53 std::list< boost::shared_ptr<IObserver> > loaders_;
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55 virtual void EmitMessage(boost::weak_ptr<IObserver> observer,
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56 const IMessage& message) ORTHANC_OVERRIDE;
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57
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58 public:
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59 GenericLoadersContext(unsigned int maxHighPriority,
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60 unsigned int maxStandardPriority,
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61 unsigned int maxLowPriority);
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62
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63 virtual ~GenericLoadersContext();
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64
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65 virtual ILock* Lock() ORTHANC_OVERRIDE;
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66
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67 void SetOrthancParameters(const Orthanc::WebServiceParameters& parameters);
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68
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69 void SetRootDirectory(const std::string& root);
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70
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71 void SetDicomCacheSize(size_t size);
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72
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73 void StartOracle();
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74
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75 void StopOracle();
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76
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77 void WaitUntilComplete();
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78 };
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79 }