annotate OrthancFramework/Resources/Graveyard/Multithreading/ReaderWriterLock.cpp @ 5594:a906dc19264c find-refactoring

created FindResponse::Resource::Format()
author Sebastien Jodogne <s.jodogne@gmail.com>
date Sat, 04 May 2024 15:25:19 +0200
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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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) 2017-2024 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 *
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8 * This program is free software: you can redistribute it and/or
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9 * modify it under the terms of the GNU Lesser General Public License
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10 * as published by the Free Software Foundation, either version 3 of
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11 * the License, or (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful, but
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * Lesser General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU Lesser General Public
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19 * License along with this program. If not, see
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20 * <http://www.gnu.org/licenses/>.
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21 **/
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22
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23
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24 #include "../PrecompiledHeaders.h"
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25 #include "ReaderWriterLock.h"
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26
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27 #include <boost/thread/shared_mutex.hpp>
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28
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29 namespace Orthanc
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30 {
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31 namespace
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32 {
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33 // Anonymous namespace to avoid clashes between compilation
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34 // modules.
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35
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36 class ReaderLockable : public ILockable
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37 {
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38 private:
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39 boost::shared_mutex& lock_;
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41 protected:
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42 virtual void Lock()
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43 {
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44 lock_.lock_shared();
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45 }
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46
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47 virtual void Unlock()
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48 {
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49 lock_.unlock_shared();
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50 }
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51
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52 public:
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53 explicit ReaderLockable(boost::shared_mutex& lock) : lock_(lock)
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54 {
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55 }
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56 };
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57
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58
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59 class WriterLockable : public ILockable
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60 {
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61 private:
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62 boost::shared_mutex& lock_;
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63
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64 protected:
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65 virtual void Lock()
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66 {
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67 lock_.lock();
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68 }
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69
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70 virtual void Unlock()
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71 {
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72 lock_.unlock();
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73 }
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74
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75 public:
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76 explicit WriterLockable(boost::shared_mutex& lock) : lock_(lock)
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77 {
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78 }
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79 };
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80 }
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81
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82 struct ReaderWriterLock::PImpl
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83 {
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84 boost::shared_mutex lock_;
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85 ReaderLockable reader_;
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86 WriterLockable writer_;
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87
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88 PImpl() : reader_(lock_), writer_(lock_)
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89 {
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90 }
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91 };
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92
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93
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94 ReaderWriterLock::ReaderWriterLock()
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95 {
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96 pimpl_ = new PImpl;
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97 }
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98
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99
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100 ReaderWriterLock::~ReaderWriterLock()
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101 {
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102 delete pimpl_;
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103 }
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104
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105
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106 ILockable& ReaderWriterLock::ForReader()
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107 {
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108 return pimpl_->reader_;
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109 }
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110
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111
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112 ILockable& ReaderWriterLock::ForWriter()
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113 {
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114 return pimpl_->writer_;
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115 }
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116 }