Mercurial > hg > orthanc
annotate OrthancFramework/Sources/Cache/SharedArchive.cpp @ 5031:eec3e4a91663 delayed-deletion
DelayedDeletion plugin: first version
author | Alain Mazy <am@osimis.io> |
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date | Tue, 21 Jun 2022 17:29:36 +0200 |
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1367 | 1 /** |
2 * Orthanc - A Lightweight, RESTful DICOM Store | |
1900 | 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
1367 | 4 * Department, University Hospital of Liege, Belgium |
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5 * Copyright (C) 2017-2022 Osimis S.A., Belgium |
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6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
1367 | 7 * |
8 * This program is free software: you can redistribute it and/or | |
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9 * modify it under the terms of the GNU Lesser General Public License |
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10 * as published by the Free Software Foundation, either version 3 of |
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11 * the License, or (at your option) any later version. |
1367 | 12 * |
13 * This program is distributed in the hope that it will be useful, but | |
14 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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16 * Lesser General Public License for more details. |
1367 | 17 * |
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18 * You should have received a copy of the GNU Lesser General Public |
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19 * License along with this program. If not, see |
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20 * <http://www.gnu.org/licenses/>. |
1367 | 21 **/ |
22 | |
23 | |
24 #include "../PrecompiledHeaders.h" | |
25 #include "SharedArchive.h" | |
26 | |
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27 #include "../Toolbox.h" |
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28 |
1367 | 29 |
30 namespace Orthanc | |
31 { | |
32 void SharedArchive::RemoveInternal(const std::string& id) | |
33 { | |
34 Archive::iterator it = archive_.find(id); | |
35 | |
36 if (it != archive_.end()) | |
37 { | |
38 delete it->second; | |
39 archive_.erase(it); | |
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40 |
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41 lru_.Invalidate(id); |
1367 | 42 } |
43 } | |
44 | |
45 | |
46 SharedArchive::Accessor::Accessor(SharedArchive& that, | |
47 const std::string& id) : | |
48 lock_(that.mutex_) | |
49 { | |
50 Archive::iterator it = that.archive_.find(id); | |
51 | |
52 if (it == that.archive_.end()) | |
53 { | |
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54 item_ = NULL; |
1367 | 55 } |
56 else | |
57 { | |
58 that.lru_.MakeMostRecent(id); | |
59 item_ = it->second; | |
60 } | |
61 } | |
62 | |
4300 | 63 bool SharedArchive::Accessor::IsValid() const |
64 { | |
65 return item_ != NULL; | |
66 } | |
67 | |
1367 | 68 |
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69 IDynamicObject& SharedArchive::Accessor::GetItem() const |
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70 { |
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71 if (item_ == NULL) |
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72 { |
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73 // "IsValid()" should have been called |
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74 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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75 } |
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76 else |
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77 { |
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78 return *item_; |
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79 } |
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80 } |
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81 |
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82 |
1368 | 83 SharedArchive::SharedArchive(size_t maxSize) : |
84 maxSize_(maxSize) | |
85 { | |
86 if (maxSize == 0) | |
87 { | |
88 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
89 } | |
90 } | |
91 | |
92 | |
1367 | 93 SharedArchive::~SharedArchive() |
94 { | |
95 for (Archive::iterator it = archive_.begin(); | |
1386 | 96 it != archive_.end(); ++it) |
1367 | 97 { |
98 delete it->second; | |
99 } | |
100 } | |
101 | |
102 | |
103 std::string SharedArchive::Add(IDynamicObject* obj) | |
104 { | |
105 boost::mutex::scoped_lock lock(mutex_); | |
106 | |
107 if (archive_.size() == maxSize_) | |
108 { | |
109 // The quota has been reached, remove the oldest element | |
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110 RemoveInternal(lru_.GetOldest()); |
1367 | 111 } |
112 | |
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113 std::string id = Toolbox::GenerateUuid(); |
1367 | 114 RemoveInternal(id); // Should never be useful because of UUID |
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115 |
1367 | 116 archive_[id] = obj; |
117 lru_.Add(id); | |
118 | |
119 return id; | |
120 } | |
121 | |
122 | |
123 void SharedArchive::Remove(const std::string& id) | |
124 { | |
125 boost::mutex::scoped_lock lock(mutex_); | |
126 RemoveInternal(id); | |
127 } | |
128 | |
129 | |
130 void SharedArchive::List(std::list<std::string>& items) | |
131 { | |
132 items.clear(); | |
133 | |
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134 { |
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135 boost::mutex::scoped_lock lock(mutex_); |
1367 | 136 |
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137 for (Archive::const_iterator it = archive_.begin(); |
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138 it != archive_.end(); ++it) |
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139 { |
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140 items.push_back(it->first); |
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141 } |
1367 | 142 } |
143 } | |
144 } |