Mercurial > hg > orthanc
annotate Core/MultiThreading/ReaderWriterLock.cpp @ 2223:29689b30f9ae
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Tue, 13 Dec 2016 15:28:05 +0100 |
| parents | b1291df2f780 |
| children | a3a65de1840f |
| rev | line source |
|---|---|
| 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 |
| 760 | 5 * |
| 6 * This program is free software: you can redistribute it and/or | |
| 7 * modify it under the terms of the GNU General Public License as | |
| 8 * published by the Free Software Foundation, either version 3 of the | |
| 9 * License, or (at your option) any later version. | |
| 10 * | |
| 11 * In addition, as a special exception, the copyright holders of this | |
| 12 * program give permission to link the code of its release with the | |
| 13 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
| 14 * that use the same license as the "OpenSSL" library), and distribute | |
| 15 * the linked executables. You must obey the GNU General Public License | |
| 16 * in all respects for all of the code used other than "OpenSSL". If you | |
| 17 * modify file(s) with this exception, you may extend this exception to | |
| 18 * your version of the file(s), but you are not obligated to do so. If | |
| 19 * you do not wish to do so, delete this exception statement from your | |
| 20 * version. If you delete this exception statement from all source files | |
| 21 * in the program, then also delete it here. | |
| 22 * | |
| 23 * This program is distributed in the hope that it will be useful, but | |
| 24 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 26 * General Public License for more details. | |
| 27 * | |
| 28 * You should have received a copy of the GNU General Public License | |
| 29 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 30 **/ | |
| 31 | |
| 32 | |
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precompiled headers
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33 #include "../PrecompiledHeaders.h" |
| 760 | 34 #include "ReaderWriterLock.h" |
| 35 | |
| 36 #include <boost/thread/shared_mutex.hpp> | |
| 37 | |
| 38 namespace Orthanc | |
| 39 { | |
| 40 namespace | |
| 41 { | |
| 42 // Anonymous namespace to avoid clashes between compilation | |
| 43 // modules. | |
| 44 | |
| 45 class ReaderLockable : public ILockable | |
| 46 { | |
| 47 private: | |
| 48 boost::shared_mutex& lock_; | |
| 49 | |
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50 protected: |
| 760 | 51 virtual void Lock() |
| 52 { | |
| 53 lock_.lock_shared(); | |
| 54 } | |
| 55 | |
| 56 virtual void Unlock() | |
| 57 { | |
| 58 lock_.unlock_shared(); | |
| 59 } | |
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60 |
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61 public: |
| 2223 | 62 explicit ReaderLockable(boost::shared_mutex& lock) : lock_(lock) |
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63 { |
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64 } |
| 760 | 65 }; |
| 66 | |
| 67 | |
| 68 class WriterLockable : public ILockable | |
| 69 { | |
| 70 private: | |
| 71 boost::shared_mutex& lock_; | |
| 72 | |
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73 protected: |
| 760 | 74 virtual void Lock() |
| 75 { | |
| 76 lock_.lock(); | |
| 77 } | |
| 78 | |
| 79 virtual void Unlock() | |
| 80 { | |
| 81 lock_.unlock(); | |
| 82 } | |
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83 |
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84 public: |
| 2223 | 85 explicit WriterLockable(boost::shared_mutex& lock) : lock_(lock) |
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86 { |
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87 } |
| 760 | 88 }; |
| 89 } | |
| 90 | |
| 91 struct ReaderWriterLock::PImpl | |
| 92 { | |
| 93 boost::shared_mutex lock_; | |
| 94 ReaderLockable reader_; | |
| 95 WriterLockable writer_; | |
| 96 | |
| 97 PImpl() : reader_(lock_), writer_(lock_) | |
| 98 { | |
| 99 } | |
| 100 }; | |
| 101 | |
| 102 | |
| 103 ReaderWriterLock::ReaderWriterLock() | |
| 104 { | |
| 105 pimpl_ = new PImpl; | |
| 106 } | |
| 107 | |
| 108 | |
| 109 ReaderWriterLock::~ReaderWriterLock() | |
| 110 { | |
| 111 delete pimpl_; | |
| 112 } | |
| 113 | |
| 114 | |
| 115 ILockable& ReaderWriterLock::ForReader() | |
| 116 { | |
| 117 return pimpl_->reader_; | |
| 118 } | |
| 119 | |
| 120 | |
| 121 ILockable& ReaderWriterLock::ForWriter() | |
| 122 { | |
| 123 return pimpl_->writer_; | |
| 124 } | |
| 125 } |