annotate Core/Cache/MemoryObjectCache.h @ 3686:a79aecf1f9ae

cont
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 24 Feb 2020 18:09:38 +0100
parents 94f4a18a79cc
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
3557
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
1 /**
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
2 * Orthanc - A Lightweight, RESTful DICOM Store
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
4 * Department, University Hospital of Liege, Belgium
3640
94f4a18a79cc upgrade to year 2020
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3563
diff changeset
5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
3557
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
6 *
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
7 * This program is free software: you can redistribute it and/or
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
8 * modify it under the terms of the GNU General Public License as
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
9 * published by the Free Software Foundation, either version 3 of the
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
10 * License, or (at your option) any later version.
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
11 *
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
12 * In addition, as a special exception, the copyright holders of this
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
13 * program give permission to link the code of its release with the
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
14 * OpenSSL project's "OpenSSL" library (or with modified versions of it
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
15 * that use the same license as the "OpenSSL" library), and distribute
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
16 * the linked executables. You must obey the GNU General Public License
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
17 * in all respects for all of the code used other than "OpenSSL". If you
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
18 * modify file(s) with this exception, you may extend this exception to
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
19 * your version of the file(s), but you are not obligated to do so. If
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
20 * you do not wish to do so, delete this exception statement from your
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
21 * version. If you delete this exception statement from all source files
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
22 * in the program, then also delete it here.
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
23 *
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
24 * This program is distributed in the hope that it will be useful, but
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
25 * WITHOUT ANY WARRANTY; without even the implied warranty of
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
27 * General Public License for more details.
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
28 *
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
29 * You should have received a copy of the GNU General Public License
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
30 * along with this program. If not, see <http://www.gnu.org/licenses/>.
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
31 **/
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
32
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
33
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
34 #pragma once
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
35
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
36 #include "ICacheable.h"
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
37 #include "LeastRecentlyUsedIndex.h"
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
38
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
39 #if !defined(__EMSCRIPTEN__)
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
40 // Multithreading is not supported in WebAssembly
3559
fb759c9efd73 fix for windows
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3557
diff changeset
41 # include <boost/thread/mutex.hpp>
3557
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
42 # include <boost/thread/shared_mutex.hpp>
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
43 #endif
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
44
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
45 #include <boost/date_time/posix_time/posix_time.hpp>
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
46
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
47
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
48 namespace Orthanc
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
49 {
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
50 class MemoryObjectCache : public boost::noncopyable
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
51 {
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
52 private:
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
53 class Item;
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
54
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
55 #if !defined(__EMSCRIPTEN__)
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
56 typedef boost::unique_lock<boost::shared_mutex> WriterLock;
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
57 typedef boost::shared_lock<boost::shared_mutex> ReaderLock;
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
58
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
59 // This mutex protects modifications to the structure of the cache (monitor)
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
60 boost::mutex cacheMutex_;
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
61
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
62 // This mutex protects modifications to the items that are stored in the cache
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
63 boost::shared_mutex contentMutex_;
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
64 #endif
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
65
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
66 size_t currentSize_;
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
67 size_t maxSize_;
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
68 LeastRecentlyUsedIndex<std::string, Item*> content_;
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
69
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
70 void Recycle(size_t targetSize);
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
71
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
72 public:
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
73 MemoryObjectCache();
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
74
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
75 ~MemoryObjectCache();
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
76
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
77 size_t GetMaximumSize();
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
78
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
79 void SetMaximumSize(size_t size);
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
80
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
81 void Acquire(const std::string& key,
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
82 ICacheable* value);
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
83
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
84 void Invalidate(const std::string& key);
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
85
3563
4812825e69fc accessor to the cache can now require to be unique
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3559
diff changeset
86 class Accessor : public boost::noncopyable
3557
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
87 {
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
88 private:
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
89 #if !defined(__EMSCRIPTEN__)
3563
4812825e69fc accessor to the cache can now require to be unique
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3559
diff changeset
90 ReaderLock readerLock_;
4812825e69fc accessor to the cache can now require to be unique
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3559
diff changeset
91 WriterLock writerLock_;
3557
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
92 boost::mutex::scoped_lock cacheLock_;
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
93 #endif
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
94
3563
4812825e69fc accessor to the cache can now require to be unique
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3559
diff changeset
95 Item* item_;
3557
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
96
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
97 public:
3563
4812825e69fc accessor to the cache can now require to be unique
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3559
diff changeset
98 Accessor(MemoryObjectCache& cache,
4812825e69fc accessor to the cache can now require to be unique
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3559
diff changeset
99 const std::string& key,
4812825e69fc accessor to the cache can now require to be unique
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3559
diff changeset
100 bool unique);
3557
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
101
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
102 bool IsValid() const
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
103 {
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
104 return item_ != NULL;
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
105 }
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
106
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
107 ICacheable& GetValue() const;
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
108
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
109 const boost::posix_time::ptime& GetTime() const;
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
110 };
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
111 };
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
112 }