Mercurial > hg > orthanc

comparison Core/MultiThreading/ReaderWriterLock.cpp @ 948:e57e08ed510f dicom-rt

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
integration mainline -> dicom-rt
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 25 Jun 2014 13:57:05 +0200
parents a811bdf8b8eb
children 6e7e5ed91c2d
comparison
equal deleted inserted replaced
767:c19552f604d5 948:e57e08ed510f
1 /**
2 * Orthanc - A Lightweight, RESTful DICOM Store
3 * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege,
4 * Belgium
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
33 #include "../PrecompiledHeaders.h"
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
50 protected:
51 virtual void Lock()
52 {
53 lock_.lock_shared();
54 }
55
56 virtual void Unlock()
57 {
58 lock_.unlock_shared();
59 }
60
61 public:
62 ReaderLockable(boost::shared_mutex& lock) : lock_(lock)
63 {
64 }
65 };
66
67
68 class WriterLockable : public ILockable
69 {
70 private:
71 boost::shared_mutex& lock_;
72
73 protected:
74 virtual void Lock()
75 {
76 lock_.lock();
77 }
78
79 virtual void Unlock()
80 {
81 lock_.unlock();
82 }
83
84 public:
85 WriterLockable(boost::shared_mutex& lock) : lock_(lock)
86 {
87 }
88
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 }