Mercurial > hg > orthanc
annotate Core/MultiThreading/ReaderWriterLock.cpp @ 1334:7f0aa3c0f659
code improvements
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Mon, 30 Mar 2015 15:28:19 +0200 |
parents | 6e7e5ed91c2d |
children | b1291df2f780 |
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760 | 1 /** |
2 * Orthanc - A Lightweight, RESTful DICOM Store | |
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3 * Copyright (C) 2012-2015 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: |
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62 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: |
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85 WriterLockable(boost::shared_mutex& lock) : lock_(lock) |
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86 { |
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87 } |
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88 |
760 | 89 }; |
90 } | |
91 | |
92 struct ReaderWriterLock::PImpl | |
93 { | |
94 boost::shared_mutex lock_; | |
95 ReaderLockable reader_; | |
96 WriterLockable writer_; | |
97 | |
98 PImpl() : reader_(lock_), writer_(lock_) | |
99 { | |
100 } | |
101 }; | |
102 | |
103 | |
104 ReaderWriterLock::ReaderWriterLock() | |
105 { | |
106 pimpl_ = new PImpl; | |
107 } | |
108 | |
109 | |
110 ReaderWriterLock::~ReaderWriterLock() | |
111 { | |
112 delete pimpl_; | |
113 } | |
114 | |
115 | |
116 ILockable& ReaderWriterLock::ForReader() | |
117 { | |
118 return pimpl_->reader_; | |
119 } | |
120 | |
121 | |
122 ILockable& ReaderWriterLock::ForWriter() | |
123 { | |
124 return pimpl_->writer_; | |
125 } | |
126 } |