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comparison Framework/OrthancInstancesCache.h @ 0:95226b754d9e

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initial release
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 17 Sep 2018 11:34:55 +0200
parents
children 4c3437217518
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-1:000000000000 0:95226b754d9e
1 /**
2 * Transfers accelerator plugin for Orthanc
3 * Copyright (C) 2018 Osimis, Belgium
4 *
5 * This program is free software: you can redistribute it and/or
6 * modify it under the terms of the GNU Affero General Public License
7 * as published by the Free Software Foundation, either version 3 of
8 * the License, or (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Affero General Public License for more details.
14 *
15 * You should have received a copy of the GNU Affero General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 **/
18
19
20 #pragma once
21
22 #include "SourceDicomInstance.h"
23 #include "TransferBucket.h"
24
25 #include <Core/Cache/LeastRecentlyUsedIndex.h>
26
27 #include <boost/thread/mutex.hpp>
28
29 namespace OrthancPlugins
30 {
31 class OrthancInstancesCache : public boost::noncopyable
32 {
33 private:
34 class CacheAccessor : public boost::noncopyable
35 {
36 private:
37 boost::mutex::scoped_lock lock_;
38 SourceDicomInstance *instance_;
39
40 void CheckValid() const;
41
42 public:
43 CacheAccessor(OrthancInstancesCache& cache,
44 const std::string& instanceId);
45
46 bool IsValid() const
47 {
48 return instance_ != NULL;
49 }
50
51 const DicomInstanceInfo& GetInfo() const;
52
53 void GetChunk(std::string& chunk,
54 std::string& md5,
55 size_t offset,
56 size_t size);
57 };
58
59
60 typedef Orthanc::LeastRecentlyUsedIndex<std::string> Index;
61 typedef std::map<std::string, SourceDicomInstance*> Content;
62
63 OrthancPluginContext* context_;
64 boost::mutex mutex_;
65 Index index_;
66 Content content_;
67 size_t memorySize_;
68 size_t maxMemorySize_;
69
70
71 // The mutex must be locked!
72 void CheckInvariants();
73
74 // The mutex must be locked!
75 void RemoveOldest();
76
77 // The mutex must be locked!
78 void Store(const std::string& instanceId,
79 std::auto_ptr<SourceDicomInstance>& instance);
80
81
82 public:
83 OrthancInstancesCache(OrthancPluginContext* context);
84
85 ~OrthancInstancesCache();
86
87 OrthancPluginContext* GetContext() const
88 {
89 return context_;
90 }
91
92 size_t GetMemorySize();
93
94 size_t GetMaxMemorySize();
95
96 void SetMaxMemorySize(size_t size);
97
98 void GetInstanceInfo(size_t& size,
99 std::string& md5,
100 const std::string& instanceId);
101
102 void GetChunk(std::string& chunk,
103 std::string& md5,
104 const std::string& instanceId,
105 size_t offset,
106 size_t size);
107
108 void GetChunk(std::string& chunk,
109 std::string& md5,
110 const TransferBucket& bucket,
111 size_t chunkIndex);
112 };
113 }