annotate Core/MultiThreading/ReaderWriterLock.cpp @ 2106:09cb73980740

fix
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 17 Oct 2016 15:36:50 +0200
parents b1291df2f780
children 29689b30f9ae
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
760
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
1 /**
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
2 * Orthanc - A Lightweight, RESTful DICOM Store
1900
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
1288
6e7e5ed91c2d upgrade to year 2015
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 824
diff changeset
4 * Department, University Hospital of Liege, Belgium
760
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
5 *
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
6 * This program is free software: you can redistribute it and/or
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
7 * modify it under the terms of the GNU General Public License as
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
8 * published by the Free Software Foundation, either version 3 of the
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
9 * License, or (at your option) any later version.
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
10 *
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
11 * In addition, as a special exception, the copyright holders of this
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
12 * program give permission to link the code of its release with the
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
14 * that use the same license as the "OpenSSL" library), and distribute
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
15 * the linked executables. You must obey the GNU General Public License
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
16 * in all respects for all of the code used other than "OpenSSL". If you
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
17 * modify file(s) with this exception, you may extend this exception to
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
18 * your version of the file(s), but you are not obligated to do so. If
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
19 * you do not wish to do so, delete this exception statement from your
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
20 * version. If you delete this exception statement from all source files
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
21 * in the program, then also delete it here.
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
22 *
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
23 * This program is distributed in the hope that it will be useful, but
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
24 * WITHOUT ANY WARRANTY; without even the implied warranty of
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
26 * General Public License for more details.
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
27 *
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
28 * You should have received a copy of the GNU General Public License
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
30 **/
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
31
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
32
824
a811bdf8b8eb precompiled headers
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 769
diff changeset
33 #include "../PrecompiledHeaders.h"
760
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
34 #include "ReaderWriterLock.h"
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
35
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
36 #include <boost/thread/shared_mutex.hpp>
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
37
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
38 namespace Orthanc
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
39 {
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
40 namespace
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
41 {
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
42 // Anonymous namespace to avoid clashes between compilation
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
43 // modules.
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
44
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
45 class ReaderLockable : public ILockable
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
46 {
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
47 private:
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
48 boost::shared_mutex& lock_;
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
49
769
3f946e5c3802 ReusableDicomUserConnection
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 760
diff changeset
50 protected:
760
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
51 virtual void Lock()
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
52 {
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
53 lock_.lock_shared();
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
54 }
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
55
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
56 virtual void Unlock()
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
57 {
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
58 lock_.unlock_shared();
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
59 }
769
3f946e5c3802 ReusableDicomUserConnection
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 760
diff changeset
60
3f946e5c3802 ReusableDicomUserConnection
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 760
diff changeset
61 public:
3f946e5c3802 ReusableDicomUserConnection
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 760
diff changeset
62 ReaderLockable(boost::shared_mutex& lock) : lock_(lock)
3f946e5c3802 ReusableDicomUserConnection
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 760
diff changeset
63 {
3f946e5c3802 ReusableDicomUserConnection
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 760
diff changeset
64 }
760
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
65 };
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
66
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
67
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
68 class WriterLockable : public ILockable
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
69 {
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
70 private:
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
71 boost::shared_mutex& lock_;
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
72
769
3f946e5c3802 ReusableDicomUserConnection
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 760
diff changeset
73 protected:
760
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
74 virtual void Lock()
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
75 {
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
76 lock_.lock();
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
77 }
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
78
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
79 virtual void Unlock()
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
80 {
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
81 lock_.unlock();
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
82 }
769
3f946e5c3802 ReusableDicomUserConnection
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 760
diff changeset
83
3f946e5c3802 ReusableDicomUserConnection
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 760
diff changeset
84 public:
3f946e5c3802 ReusableDicomUserConnection
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 760
diff changeset
85 WriterLockable(boost::shared_mutex& lock) : lock_(lock)
3f946e5c3802 ReusableDicomUserConnection
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 760
diff changeset
86 {
3f946e5c3802 ReusableDicomUserConnection
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 760
diff changeset
87 }
3f946e5c3802 ReusableDicomUserConnection
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 760
diff changeset
88
760
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
89 };
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
90 }
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
91
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
92 struct ReaderWriterLock::PImpl
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
93 {
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
94 boost::shared_mutex lock_;
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
95 ReaderLockable reader_;
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
96 WriterLockable writer_;
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
97
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
98 PImpl() : reader_(lock_), writer_(lock_)
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
99 {
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
100 }
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
101 };
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
102
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
103
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
104 ReaderWriterLock::ReaderWriterLock()
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
105 {
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
106 pimpl_ = new PImpl;
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
107 }
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
108
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
109
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
110 ReaderWriterLock::~ReaderWriterLock()
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
111 {
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
112 delete pimpl_;
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
113 }
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
114
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
115
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
116 ILockable& ReaderWriterLock::ForReader()
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
117 {
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
118 return pimpl_->reader_;
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
119 }
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
120
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
121
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
122 ILockable& ReaderWriterLock::ForWriter()
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
123 {
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
124 return pimpl_->writer_;
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
125 }
b2a62f22fbe8 lock abstraction
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
126 }