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comparison Core/Cache/SharedArchive.cpp @ 1367:fe6e5a9f1ea2 query-retrieve

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SharedArchive
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 22 May 2015 17:40:10 +0200
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children b22ba8c5edbe
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1366:a3559b66fba7 1367:fe6e5a9f1ea2
1 /**
2 * Orthanc - A Lightweight, RESTful DICOM Store
3 * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, 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 "SharedArchive.h"
35
36
37 #include "../Uuid.h"
38
39
40 namespace Orthanc
41 {
42 void SharedArchive::RemoveInternal(const std::string& id)
43 {
44 Archive::iterator it = archive_.find(id);
45
46 if (it != archive_.end())
47 {
48 delete it->second;
49 archive_.erase(it);
50 }
51 }
52
53
54 SharedArchive::Accessor::Accessor(SharedArchive& that,
55 const std::string& id) :
56 lock_(that.mutex_)
57 {
58 Archive::iterator it = that.archive_.find(id);
59
60 if (it == that.archive_.end())
61 {
62 throw OrthancException(ErrorCode_InexistentItem);
63 }
64 else
65 {
66 that.lru_.MakeMostRecent(id);
67 item_ = it->second;
68 }
69 }
70
71
72 SharedArchive::~SharedArchive()
73 {
74 for (Archive::iterator it = archive_.begin();
75 it != archive_.end(); it++)
76 {
77 delete it->second;
78 }
79 }
80
81
82 std::string SharedArchive::Add(IDynamicObject* obj)
83 {
84 boost::mutex::scoped_lock lock(mutex_);
85
86 if (archive_.size() == maxSize_)
87 {
88 // The quota has been reached, remove the oldest element
89 std::string oldest = lru_.RemoveOldest();
90 RemoveInternal(oldest);
91 }
92
93 std::string id = Toolbox::GenerateUuid();
94 RemoveInternal(id); // Should never be useful because of UUID
95 archive_[id] = obj;
96 lru_.Add(id);
97
98 return id;
99 }
100
101
102 void SharedArchive::Remove(const std::string& id)
103 {
104 boost::mutex::scoped_lock lock(mutex_);
105 RemoveInternal(id);
106 lru_.Invalidate(id);
107 }
108
109
110 void SharedArchive::List(std::list<std::string>& items)
111 {
112 items.clear();
113
114 boost::mutex::scoped_lock lock(mutex_);
115
116 for (Archive::const_iterator it = archive_.begin();
117 it != archive_.end(); it++)
118 {
119 items.push_back(it->first);
120 }
121 }
122 }
123
124