Mercurial > hg > orthanc

annotate OrthancFramework/Sources/Cache/MemoryCache.cpp @ 4844:55e8fb8e8028

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
tagging a pre-release of the Orthanc framework for WSI 1.1
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 07 Dec 2021 14:01:17 +0100
parents 7053502fbf97
children 43e613a7756b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
284
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
1 /**
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
2 * Orthanc - A Lightweight, RESTful DICOM Store
1900
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1486
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
4437
d9473bd5ed43 upgrade to year 2021
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4268
diff changeset
5 * Copyright (C) 2017-2021 Osimis S.A., Belgium
4831
7053502fbf97 added copyright UCLouvain
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
6 * Copyright (C) 2021-2021 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
284
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
7 *
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
8 * This program is free software: you can redistribute it and/or
4119
bf7b9edf6b81 re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4044
diff changeset
9 * modify it under the terms of the GNU Lesser General Public License
bf7b9edf6b81 re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4044
diff changeset
10 * as published by the Free Software Foundation, either version 3 of
bf7b9edf6b81 re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4044
diff changeset
11 * the License, or (at your option) any later version.
284
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
12 *
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
13 * This program is distributed in the hope that it will be useful, but
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
4119
bf7b9edf6b81 re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4044
diff changeset
16 * Lesser General Public License for more details.
284
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
17 *
4119
bf7b9edf6b81 re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4044
diff changeset
18 * You should have received a copy of the GNU Lesser General Public
bf7b9edf6b81 re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4044
diff changeset
19 * License along with this program. If not, see
bf7b9edf6b81 re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4044
diff changeset
20 * <http://www.gnu.org/licenses/>.
284
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
21 **/
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
22
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
23
824
a811bdf8b8eb precompiled headers
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 689
diff changeset
24 #include "../PrecompiledHeaders.h"
284
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
25 #include "MemoryCache.h"
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
26
1486
f967bdf8534e refactoring to Logging.h
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
27 #include "../Logging.h"
288
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 285
diff changeset
28
284
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
29 namespace Orthanc
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
30 {
3557
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
31 namespace Deprecated
284
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
32 {
3557
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
33 MemoryCache::Page& MemoryCache::Load(const std::string& id)
284
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
34 {
3557
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
35 // Reuse the cache entry if it already exists
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
36 Page* p = NULL;
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
37 if (index_.Contains(id, p))
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
38 {
4268
0ae2ca210077 new macro TLOG() to replace VLOG() for trace logs with a category
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4119
diff changeset
39 LOG(TRACE) << "Reusing a cache page";
3557
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
40 assert(p != NULL);
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
41 index_.MakeMostRecent(id);
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
42 return *p;
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
43 }
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
44
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
45 // The id is not in the cache yet. Make some room if the cache
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
46 // is full.
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
47 if (index_.GetSize() == cacheSize_)
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
48 {
4268
0ae2ca210077 new macro TLOG() to replace VLOG() for trace logs with a category
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4119
diff changeset
49 LOG(TRACE) << "Dropping the oldest cache page";
3557
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
50 index_.RemoveOldest(p);
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
51 delete p;
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
52 }
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
53
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
54 // Create a new cache page
3712
2a170a8f1faf replacing std::auto_ptr by std::unique_ptr
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3640
diff changeset
55 std::unique_ptr<Page> result(new Page);
3557
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
56 result->id_ = id;
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
57 result->content_.reset(provider_.Provide(id));
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
58
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
59 // Add the newly create page to the cache
4268
0ae2ca210077 new macro TLOG() to replace VLOG() for trace logs with a category
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4119
diff changeset
60 LOG(TRACE) << "Registering new data in a cache page";
3557
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
61 p = result.release();
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
62 index_.Add(id, p);
284
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
63 return *p;
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
64 }
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
65
3557
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
66 MemoryCache::MemoryCache(ICachePageProvider& provider,
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
67 size_t cacheSize) :
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
68 provider_(provider),
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
69 cacheSize_(cacheSize)
284
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
70 {
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
71 }
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
72
3557
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
73 void MemoryCache::Invalidate(const std::string& id)
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
74 {
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
75 Page* p = NULL;
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
76 if (index_.Contains(id, p))
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
77 {
4268
0ae2ca210077 new macro TLOG() to replace VLOG() for trace logs with a category
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4119
diff changeset
78 LOG(TRACE) << "Invalidating a cache page";
3557
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
79 assert(p != NULL);
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
80 delete p;
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
81 index_.Invalidate(id);
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
82 }
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
83 }
284
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
84
3557
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
85 MemoryCache::~MemoryCache()
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
86 {
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
87 while (!index_.IsEmpty())
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
88 {
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
89 Page* element = NULL;
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
90 index_.RemoveOldest(element);
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
91 assert(element != NULL);
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
92 delete element;
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
93 }
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
94 }
284
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
95
3557
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
96 IDynamicObject& MemoryCache::Access(const std::string& id)
2507
99116ed6f38c invalidate DicomCache when deleting instance
amazy
parents: 2447
diff changeset
97 {
3557
4d809b2e1141 better cache toolbox: MemoryObjectCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3060
diff changeset
98 return *Load(id).content_;
2507
99116ed6f38c invalidate DicomCache when deleting instance
amazy
parents: 2447
diff changeset
99 }
99116ed6f38c invalidate DicomCache when deleting instance
amazy
parents: 2447
diff changeset
100 }
284
06aa7b7b6723 implementation of a single-threaded cache mechanism
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
101 }