Mercurial > hg > orthanc
annotate OrthancFramework/Resources/Graveyard/Multithreading/ReaderWriterLock.cpp @ 4400:029366f95217
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 23 Dec 2020 12:30:56 +0100 |
| parents | bf7b9edf6b81 |
| children | d9473bd5ed43 |
| 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) 2017-2020 Osimis S.A., Belgium |
| 760 | 6 * |
| 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. |
| 760 | 11 * |
| 12 * This program is distributed in the hope that it will be useful, but | |
| 13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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15 * Lesser General Public License for more details. |
| 760 | 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/>. |
| 760 | 20 **/ |
| 21 | |
| 22 | |
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23 #include "../PrecompiledHeaders.h" |
| 760 | 24 #include "ReaderWriterLock.h" |
| 25 | |
| 26 #include <boost/thread/shared_mutex.hpp> | |
| 27 | |
| 28 namespace Orthanc | |
| 29 { | |
| 30 namespace | |
| 31 { | |
| 32 // Anonymous namespace to avoid clashes between compilation | |
| 33 // modules. | |
| 34 | |
| 35 class ReaderLockable : public ILockable | |
| 36 { | |
| 37 private: | |
| 38 boost::shared_mutex& lock_; | |
| 39 | |
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40 protected: |
| 760 | 41 virtual void Lock() |
| 42 { | |
| 43 lock_.lock_shared(); | |
| 44 } | |
| 45 | |
| 46 virtual void Unlock() | |
| 47 { | |
| 48 lock_.unlock_shared(); | |
| 49 } | |
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50 |
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51 public: |
| 2223 | 52 explicit ReaderLockable(boost::shared_mutex& lock) : lock_(lock) |
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53 { |
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54 } |
| 760 | 55 }; |
| 56 | |
| 57 | |
| 58 class WriterLockable : public ILockable | |
| 59 { | |
| 60 private: | |
| 61 boost::shared_mutex& lock_; | |
| 62 | |
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63 protected: |
| 760 | 64 virtual void Lock() |
| 65 { | |
| 66 lock_.lock(); | |
| 67 } | |
| 68 | |
| 69 virtual void Unlock() | |
| 70 { | |
| 71 lock_.unlock(); | |
| 72 } | |
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73 |
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74 public: |
| 2223 | 75 explicit WriterLockable(boost::shared_mutex& lock) : lock_(lock) |
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76 { |
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77 } |
| 760 | 78 }; |
| 79 } | |
| 80 | |
| 81 struct ReaderWriterLock::PImpl | |
| 82 { | |
| 83 boost::shared_mutex lock_; | |
| 84 ReaderLockable reader_; | |
| 85 WriterLockable writer_; | |
| 86 | |
| 87 PImpl() : reader_(lock_), writer_(lock_) | |
| 88 { | |
| 89 } | |
| 90 }; | |
| 91 | |
| 92 | |
| 93 ReaderWriterLock::ReaderWriterLock() | |
| 94 { | |
| 95 pimpl_ = new PImpl; | |
| 96 } | |
| 97 | |
| 98 | |
| 99 ReaderWriterLock::~ReaderWriterLock() | |
| 100 { | |
| 101 delete pimpl_; | |
| 102 } | |
| 103 | |
| 104 | |
| 105 ILockable& ReaderWriterLock::ForReader() | |
| 106 { | |
| 107 return pimpl_->reader_; | |
| 108 } | |
| 109 | |
| 110 | |
| 111 ILockable& ReaderWriterLock::ForWriter() | |
| 112 { | |
| 113 return pimpl_->writer_; | |
| 114 } | |
| 115 } |