Mercurial > hg > orthanc-stone

annotate Framework/Messages/LockingEmitter.h @ 981:c20dbaab360c

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Ability to cope with empty "Referenced SOP Instance UID" (dicom path (3006,0039)[i] / (0x3006, 0x0040)[0] / (0x3006, 0x0016)[0] / (0x0008, 0x1155)) + better logs + code formating
author Benjamin Golinvaux <bgo@osimis.io>
date Fri, 06 Sep 2019 09:38:18 +0200
parents 6d15261f9c99
children e713f1a99861 6dd90b8d1589
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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) 2017-2019 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 Affero 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 * Affero 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 Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21 #pragma once
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22
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23 #include "IMessageEmitter.h"
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24 #include "IObservable.h"
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25
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26 #include <boost/thread.hpp>
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27
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28 namespace OrthancStone
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29 {
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30 /**
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31 * This class is used when using the ThreadedOracle : since messages
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32 * can be sent from multiple Oracle threads, this IMessageEmitter
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33 * implementation serializes the callbacks.
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34 *
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35 * The internal mutex used in Oracle messaging can also be used to
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36 * protect the application data. Thus, this class can be used as a single
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37 * application-wide mutex.
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38 */
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39 class LockingEmitter : public IMessageEmitter
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40 {
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41 private:
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42 boost::shared_mutex mutex_;
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43 MessageBroker broker_;
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44 IObservable oracleObservable_;
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45
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46 public:
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47 LockingEmitter() :
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48 oracleObservable_(broker_)
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49 {
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50 }
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51
852
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52 MessageBroker& GetBroker()
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53 {
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54 return broker_;
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55 }
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56
843
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57 virtual void EmitMessage(const IObserver& observer,
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58 const IMessage& message) ORTHANC_OVERRIDE
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59 {
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60 try
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61 {
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62 boost::unique_lock<boost::shared_mutex> lock(mutex_);
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63 oracleObservable_.EmitMessage(observer, message);
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64 }
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65 catch (Orthanc::OrthancException& e)
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66 {
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67 LOG(ERROR) << "Exception while emitting a message: " << e.What();
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68 }
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69 }
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70
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71
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72 class ReaderLock : public boost::noncopyable
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73 {
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74 private:
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75 LockingEmitter& that_;
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76 boost::shared_lock<boost::shared_mutex> lock_;
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77
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78 public:
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79 ReaderLock(LockingEmitter& that) :
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80 that_(that),
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81 lock_(that.mutex_)
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82 {
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83 }
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84 };
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85
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86
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87 class WriterLock : public boost::noncopyable
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88 {
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89 private:
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90 LockingEmitter& that_;
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91 boost::unique_lock<boost::shared_mutex> lock_;
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92
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93 public:
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94 WriterLock(LockingEmitter& that) :
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95 that_(that),
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96 lock_(that.mutex_)
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97 {
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98 }
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99
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100 MessageBroker& GetBroker()
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101 {
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102 return that_.broker_;
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103 }
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104
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105 IObservable& GetOracleObservable()
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106 {
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107 return that_.oracleObservable_;
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108 }
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109 };
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110 };
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111 }