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annotate ViewerPlugin/DicomPyramidCache.cpp @ 314:9dc7f1e8716d

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reverse the order of the "sizes" field in the IIIF manifest
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 14 Aug 2024 15:52:13 +0200
parents 0683312e21ba
children
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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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) 2017-2023 Osimis S.A., Belgium
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6 * Copyright (C) 2024-2024 Orthanc Team SRL, Belgium
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7020852a8fa9 updated year to 2024
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7 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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8 *
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9 * This program is free software: you can redistribute it and/or
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10 * modify it under the terms of the GNU Affero General Public License
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11 * as published by the Free Software Foundation, either version 3 of
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12 * the License, or (at your option) any later version.
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13 *
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14 * This program is distributed in the hope that it will be useful, but
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15 * WITHOUT ANY WARRANTY; without even the implied warranty of
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16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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17 * Affero General Public License for more details.
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18 *
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19 * You should have received a copy of the GNU Affero General Public License
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20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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21 **/
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24 #include "../Framework/PrecompiledHeadersWSI.h"
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25 #include "DicomPyramidCache.h"
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27 #include "OrthancPluginConnection.h"
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29 #include <Compatibility.h> // For std::unique_ptr
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30
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31 #include <cassert>
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32
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33 static std::unique_ptr<OrthancWSI::DicomPyramidCache> singleton_;
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34
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36 namespace OrthancWSI
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37 {
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38 DicomPyramid* DicomPyramidCache::GetCachedPyramid(const std::string& seriesId)
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39 {
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40 // Mutex is assumed to be locked
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41 DicomPyramid* pyramid = NULL;
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43 // Is the series of interest already cached as a pyramid?
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44 if (cache_.Contains(seriesId, pyramid))
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45 {
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46 if (pyramid == NULL)
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47 {
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48 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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49 }
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50
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51 // Tag the series as the most recently used
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52 cache_.MakeMostRecent(seriesId);
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53 }
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54
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55 return pyramid;
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56 }
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59 DicomPyramid& DicomPyramidCache::GetPyramid(const std::string& seriesId,
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60 boost::mutex::scoped_lock& lock)
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61 {
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62 // Mutex is assumed to be locked
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64 {
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65 DicomPyramid* pyramid = GetCachedPyramid(seriesId);
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66 if (pyramid != NULL)
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67 {
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68 return *pyramid;
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69 }
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70 }
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71
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72 // Unlock the mutex to construct the pyramid (this is a
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73 // time-consuming operation, we don't want it to block other clients)
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74 lock.unlock();
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75
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76 assert(orthanc_.get() != NULL);
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77 std::unique_ptr<DicomPyramid> pyramid
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78 (new DicomPyramid(*orthanc_, seriesId, true /* use metadata cache */));
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80 {
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81 // The pyramid is constructed: Store it into the cache
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82 lock.lock();
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83
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84 DicomPyramid* cached = GetCachedPyramid(seriesId);
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85 if (cached != NULL)
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86 {
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87 // The pyramid was already constructed by another request in
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88 // between, reuse the cached value (the auto_ptr destroys
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89 // the just-constructed pyramid)
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90 return *cached;
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91 }
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93 if (cache_.GetSize() == maxSize_)
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94 {
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95 // The cache has grown too large: First delete the least
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96 // recently used entry
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97 DicomPyramid* oldest = NULL;
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98 cache_.RemoveOldest(oldest);
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99
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100 if (oldest == NULL)
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101 {
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102 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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103 }
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104 else
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105 {
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106 delete oldest;
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107 }
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108 }
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109
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110 // Now we have at least one free entry in the cache
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111 assert(cache_.GetSize() < maxSize_);
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112
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113 // Add a new element to the cache and make it the most
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114 // recently used entry
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115 DicomPyramid* payload = pyramid.release();
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116 cache_.Add(seriesId, payload);
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117 return *payload;
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118 }
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119 }
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120
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121
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122 DicomPyramidCache::DicomPyramidCache(OrthancStone::IOrthancConnection* orthanc /* takes ownership */,
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123 size_t maxSize) :
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124 orthanc_(orthanc),
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125 maxSize_(maxSize)
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126 {
261
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127 if (orthanc == NULL)
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128 {
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129 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
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130 }
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131 }
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132
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133
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134 DicomPyramidCache::~DicomPyramidCache()
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135 {
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136 while (!cache_.IsEmpty())
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137 {
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138 DicomPyramid* pyramid = NULL;
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139 std::string seriesId = cache_.RemoveOldest(pyramid);
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140
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141 if (pyramid != NULL)
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142 {
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143 delete pyramid;
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144 }
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145 }
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146 }
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147
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148
261
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149 void DicomPyramidCache::InitializeInstance(size_t maxSize)
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150 {
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151 if (singleton_.get() == NULL)
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152 {
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153 singleton_.reset(new DicomPyramidCache(new OrthancWSI::OrthancPluginConnection, maxSize));
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154 }
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155 else
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156 {
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157 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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158 }
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159 }
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160
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161
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162 void DicomPyramidCache::FinalizeInstance()
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163 {
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164 if (singleton_.get() == NULL)
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165 {
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166 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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167 }
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168 else
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169 {
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170 singleton_.reset(NULL);
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171 }
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172 }
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173
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174
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175 DicomPyramidCache& DicomPyramidCache::GetInstance()
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176 {
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177 if (singleton_.get() == NULL)
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178 {
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179 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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180 }
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181 else
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182 {
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183 return *singleton_;
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184 }
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185 }
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186
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187
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188 void DicomPyramidCache::Invalidate(const std::string& seriesId)
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189 {
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190 boost::mutex::scoped_lock lock(mutex_);
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191
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192 if (cache_.Contains(seriesId))
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193 {
199
a1c265cb2174 replacing deprecated std::auto_ptr by std::unique_ptr
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194 std::unique_ptr<DicomPyramid> pyramid(cache_.Invalidate(seriesId));
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195
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196 if (pyramid.get() == NULL)
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197 {
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198 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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199 }
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200 }
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201 }
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parents:
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202
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203
261
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204 DicomPyramidCache::Locker::Locker(const std::string& seriesId) :
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205 cache_(DicomPyramidCache::GetInstance()),
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206 lock_(cache_.mutex_),
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207 pyramid_(cache_.GetPyramid(seriesId, lock_))
73
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208 {
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parents:
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209 }
a8c90aa32ca6 LRU caching of pyramids, OrthancWSIClearCache script
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parents:
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210 }