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annotate Framework/Toolbox/ParsedDicomFileCache.cpp @ 1136:42581a6182c8 broker

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reactivation of the cache of parsed DICOM files
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 06 Nov 2019 17:54:14 +0100
parents a8bf81756839
children 6333e6f7248e
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2019 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #include "ParsedDicomFileCache.h"
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23
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24 namespace OrthancStone
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25 {
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26 class ParsedDicomFileCache::Item : public Orthanc::ICacheable
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27 {
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28 private:
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29 boost::mutex mutex_;
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30 std::auto_ptr<Orthanc::ParsedDicomFile> dicom_;
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31 size_t fileSize_;
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32 bool hasPixelData_;
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33
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34 public:
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35 Item(Orthanc::ParsedDicomFile* dicom,
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36 size_t fileSize,
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37 bool hasPixelData) :
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38 dicom_(dicom),
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39 fileSize_(fileSize),
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40 hasPixelData_(hasPixelData)
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41 {
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42 if (dicom == NULL)
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43 {
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44 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
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45 }
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46 }
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47
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48 boost::mutex& GetMutex()
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49 {
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50 return mutex_;
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51 }
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52
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53 virtual size_t GetMemoryUsage() const
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54 {
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55 return fileSize_;
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56 }
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57
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58 Orthanc::ParsedDicomFile& GetDicom() const
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59 {
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60 assert(dicom_.get() != NULL);
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61 return *dicom_;
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62 }
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63
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64 bool HasPixelData() const
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65 {
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66 return hasPixelData_;
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67 }
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68 };
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69
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70
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71 void ParsedDicomFileCache::Acquire(const std::string& path,
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72 Orthanc::ParsedDicomFile* dicom,
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73 size_t fileSize,
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74 bool hasPixelData)
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75 {
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76 cache_.Acquire(path, new Item(dicom, fileSize, hasPixelData));
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77 }
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78
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79
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80 ParsedDicomFileCache::Reader::Reader(ParsedDicomFileCache& cache,
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81 const std::string& path) :
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82 reader_(cache.cache_, path)
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83 {
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84 if (reader_.IsValid())
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85 {
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86 /**
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87 * The "Orthanc::MemoryObjectCache" uses readers/writers. The
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88 * "Reader" subclass of the cache locks as a reader. This means
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89 * that multiple threads can still access the underlying
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90 * "ParsedDicomFile" object, which is not supported by DCMTK. We
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91 * thus protect the DCMTK object by a simple mutex.
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92 **/
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93
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94 item_ = &dynamic_cast<Item&>(reader_.GetValue());
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95 lock_.reset(new boost::mutex::scoped_lock(item_->GetMutex()));
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96 }
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97 else
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98 {
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99 item_ = NULL;
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100 }
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101 }
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102
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103
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104 bool ParsedDicomFileCache::Reader::HasPixelData() const
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105 {
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106 if (item_ == NULL)
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107 {
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108 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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109 }
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110 else
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111 {
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112 return item_->HasPixelData();
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113 }
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114 }
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115
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116
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117 Orthanc::ParsedDicomFile& ParsedDicomFileCache::Reader::GetDicom() const
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118 {
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119 if (item_ == NULL)
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120 {
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121 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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122 }
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123 else
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124 {
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125 return item_->GetDicom();
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126 }
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127 }
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128
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129
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130 size_t ParsedDicomFileCache::Reader::GetFileSize() const
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131 {
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132 if (item_ == NULL)
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133 {
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Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1116
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134 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
a8bf81756839 unsuccessful attempt to cache ParseDicomFileCommand
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1116
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135 }
a8bf81756839 unsuccessful attempt to cache ParseDicomFileCommand
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1116
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136 else
a8bf81756839 unsuccessful attempt to cache ParseDicomFileCommand
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1116
diff changeset
137 {
a8bf81756839 unsuccessful attempt to cache ParseDicomFileCommand
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1116
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138 return item_->GetMemoryUsage();
a8bf81756839 unsuccessful attempt to cache ParseDicomFileCommand
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1116
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139 }
1116
a08699daf78b ParsedDicomFileCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
140 }
a08699daf78b ParsedDicomFileCache
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
141 }