Mercurial > hg > orthanc
annotate OrthancFramework/Resources/Graveyard/Multithreading/ReaderWriterLock.cpp @ 5859:3ddd1b0231e9 default tip
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| author | Alain Mazy <am@orthanc.team> |
|---|---|
| date | Tue, 05 Nov 2024 13:21:23 +0100 |
| parents | f7adfb22e20e |
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| rev | line source |
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| 760 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 1900 | 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) 2017-2023 Osimis S.A., Belgium |
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6 * Copyright (C) 2024-2024 Orthanc Team SRL, Belgium |
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7 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
| 760 | 8 * |
| 9 * This program is free software: you can redistribute it and/or | |
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10 * modify it under the terms of the GNU Lesser General Public License |
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11 * as published by the Free Software Foundation, either version 3 of |
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12 * the License, or (at your option) any later version. |
| 760 | 13 * |
| 14 * This program is distributed in the hope that it will be useful, but | |
| 15 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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17 * Lesser General Public License for more details. |
| 760 | 18 * |
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19 * You should have received a copy of the GNU Lesser General Public |
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20 * License along with this program. If not, see |
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21 * <http://www.gnu.org/licenses/>. |
| 760 | 22 **/ |
| 23 | |
| 24 | |
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25 #include "../PrecompiledHeaders.h" |
| 760 | 26 #include "ReaderWriterLock.h" |
| 27 | |
| 28 #include <boost/thread/shared_mutex.hpp> | |
| 29 | |
| 30 namespace Orthanc | |
| 31 { | |
| 32 namespace | |
| 33 { | |
| 34 // Anonymous namespace to avoid clashes between compilation | |
| 35 // modules. | |
| 36 | |
| 37 class ReaderLockable : public ILockable | |
| 38 { | |
| 39 private: | |
| 40 boost::shared_mutex& lock_; | |
| 41 | |
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42 protected: |
| 760 | 43 virtual void Lock() |
| 44 { | |
| 45 lock_.lock_shared(); | |
| 46 } | |
| 47 | |
| 48 virtual void Unlock() | |
| 49 { | |
| 50 lock_.unlock_shared(); | |
| 51 } | |
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52 |
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53 public: |
| 2223 | 54 explicit ReaderLockable(boost::shared_mutex& lock) : lock_(lock) |
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55 { |
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56 } |
| 760 | 57 }; |
| 58 | |
| 59 | |
| 60 class WriterLockable : public ILockable | |
| 61 { | |
| 62 private: | |
| 63 boost::shared_mutex& lock_; | |
| 64 | |
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65 protected: |
| 760 | 66 virtual void Lock() |
| 67 { | |
| 68 lock_.lock(); | |
| 69 } | |
| 70 | |
| 71 virtual void Unlock() | |
| 72 { | |
| 73 lock_.unlock(); | |
| 74 } | |
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75 |
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76 public: |
| 2223 | 77 explicit WriterLockable(boost::shared_mutex& lock) : lock_(lock) |
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78 { |
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79 } |
| 760 | 80 }; |
| 81 } | |
| 82 | |
| 83 struct ReaderWriterLock::PImpl | |
| 84 { | |
| 85 boost::shared_mutex lock_; | |
| 86 ReaderLockable reader_; | |
| 87 WriterLockable writer_; | |
| 88 | |
| 89 PImpl() : reader_(lock_), writer_(lock_) | |
| 90 { | |
| 91 } | |
| 92 }; | |
| 93 | |
| 94 | |
| 95 ReaderWriterLock::ReaderWriterLock() | |
| 96 { | |
| 97 pimpl_ = new PImpl; | |
| 98 } | |
| 99 | |
| 100 | |
| 101 ReaderWriterLock::~ReaderWriterLock() | |
| 102 { | |
| 103 delete pimpl_; | |
| 104 } | |
| 105 | |
| 106 | |
| 107 ILockable& ReaderWriterLock::ForReader() | |
| 108 { | |
| 109 return pimpl_->reader_; | |
| 110 } | |
| 111 | |
| 112 | |
| 113 ILockable& ReaderWriterLock::ForWriter() | |
| 114 { | |
| 115 return pimpl_->writer_; | |
| 116 } | |
| 117 } |