Mercurial > hg > orthanc-transfers
annotate Framework/OrthancInstancesCache.cpp @ 19:b06103a50c95
upgrade to year 2020
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Fri, 31 Jan 2020 17:47:55 +0100 |
| parents | 7e207ade2f1a |
| children | dfc43678aecb |
| rev | line source |
|---|---|
| 0 | 1 /** |
| 2 * Transfers accelerator plugin for Orthanc | |
| 19 | 3 * Copyright (C) 2018-2020 Osimis S.A., Belgium |
| 0 | 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 #include "OrthancInstancesCache.h" | |
| 21 | |
| 22 | |
| 23 namespace OrthancPlugins | |
| 24 { | |
| 25 void OrthancInstancesCache::CacheAccessor::CheckValid() const | |
| 26 { | |
| 27 if (instance_ == NULL) | |
| 28 { | |
| 29 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
| 30 } | |
| 31 } | |
| 32 | |
| 33 | |
| 34 OrthancInstancesCache::CacheAccessor::CacheAccessor(OrthancInstancesCache& cache, | |
| 35 const std::string& instanceId) : | |
| 36 lock_(cache.mutex_), | |
| 37 instance_(NULL) | |
| 38 { | |
| 39 cache.CheckInvariants(); | |
| 40 | |
| 41 if (cache.index_.Contains(instanceId)) | |
| 42 { | |
| 43 // Move the instance at the end of the LRU recycling | |
| 44 cache.index_.MakeMostRecent(instanceId); | |
| 45 | |
| 46 Content::const_iterator instance = cache.content_.find(instanceId); | |
| 47 assert(instance != cache.content_.end() && | |
| 48 instance->first == instanceId && | |
| 49 instance->second != NULL); | |
| 50 | |
| 51 instance_ = instance->second; | |
| 52 } | |
| 53 } | |
| 54 | |
| 55 | |
| 56 const DicomInstanceInfo& OrthancInstancesCache::CacheAccessor::GetInfo() const | |
| 57 { | |
| 58 CheckValid(); | |
| 59 return instance_->GetInfo(); | |
| 60 } | |
| 61 | |
| 62 | |
| 63 void OrthancInstancesCache::CacheAccessor::GetChunk(std::string& chunk, | |
| 64 std::string& md5, | |
| 65 size_t offset, | |
| 66 size_t size) | |
| 67 { | |
| 68 CheckValid(); | |
| 69 return instance_->GetChunk(chunk, md5, offset, size); | |
| 70 } | |
| 71 | |
| 72 | |
| 73 void OrthancInstancesCache::CheckInvariants() | |
| 74 { | |
| 75 #ifndef NDEBUG | |
| 76 size_t s = 0; | |
| 77 | |
| 78 assert(content_.size() == index_.GetSize()); | |
| 79 | |
| 80 for (Content::const_iterator it = content_.begin(); | |
| 81 it != content_.end(); ++it) | |
| 82 { | |
| 83 assert(it->second != NULL); | |
| 84 s += it->second->GetInfo().GetSize(); | |
| 85 | |
| 86 assert(index_.Contains(it->first)); | |
| 87 } | |
| 88 | |
| 89 assert(s == memorySize_); | |
| 90 | |
| 91 if (memorySize_ > maxMemorySize_) | |
| 92 { | |
| 93 // It is only allowed to overtake the max memory size if the | |
| 94 // cache contains a single, large DICOM instance | |
| 95 assert(index_.GetSize() == 1 && | |
| 96 content_.size() == 1 && | |
| 97 memorySize_ == (content_.begin())->second->GetInfo().GetSize()); | |
| 98 } | |
| 99 #endif | |
| 100 } | |
| 101 | |
| 102 | |
| 103 void OrthancInstancesCache::RemoveOldest() | |
| 104 { | |
| 105 CheckInvariants(); | |
| 106 | |
| 107 assert(!index_.IsEmpty()); | |
| 108 | |
| 109 std::string oldest = index_.RemoveOldest(); | |
| 110 | |
| 111 Content::iterator instance = content_.find(oldest); | |
| 112 assert(instance != content_.end() && | |
| 113 instance->second != NULL); | |
| 114 | |
| 115 memorySize_ -= instance->second->GetInfo().GetSize(); | |
| 116 delete instance->second; | |
| 117 content_.erase(instance); | |
| 118 } | |
| 119 | |
| 120 | |
| 121 void OrthancInstancesCache::Store(const std::string& instanceId, | |
| 122 std::auto_ptr<SourceDicomInstance>& instance) | |
| 123 { | |
| 124 if (instance.get() == NULL) | |
| 125 { | |
| 126 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 127 } | |
| 128 | |
| 129 if (index_.Contains(instanceId)) | |
| 130 { | |
| 131 // This instance has been read by another thread since the cache | |
| 132 // lookup, give up | |
| 133 index_.MakeMostRecent(instanceId); | |
| 134 return; | |
| 135 } | |
| 136 else | |
| 137 { | |
| 138 // Make room in the cache for the new instance | |
| 139 while (!index_.IsEmpty() && | |
| 140 memorySize_ + instance->GetInfo().GetSize() > maxMemorySize_) | |
| 141 { | |
| 142 RemoveOldest(); | |
| 143 } | |
| 144 | |
| 145 CheckInvariants(); | |
| 146 | |
| 147 index_.AddOrMakeMostRecent(instanceId); | |
| 148 memorySize_ += instance->GetInfo().GetSize(); | |
| 149 content_[instanceId] = instance.release(); | |
| 150 | |
| 151 CheckInvariants(); | |
| 152 } | |
| 153 } | |
| 154 | |
| 155 | |
|
8
4c3437217518
fix for compatibility with simplified OrthancPluginCppWrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
0
diff
changeset
|
156 OrthancInstancesCache::OrthancInstancesCache() : |
| 0 | 157 memorySize_(0), |
| 158 maxMemorySize_(512 * MB) // 512 MB by default | |
| 159 { | |
| 160 } | |
| 161 | |
| 162 | |
| 163 OrthancInstancesCache::~OrthancInstancesCache() | |
| 164 { | |
| 165 CheckInvariants(); | |
| 166 | |
| 167 for (Content::iterator it = content_.begin(); | |
| 168 it != content_.end(); ++it) | |
| 169 { | |
| 170 assert(it->second != NULL); | |
| 171 delete it->second; | |
| 172 } | |
| 173 } | |
| 174 | |
| 175 | |
| 176 size_t OrthancInstancesCache::GetMemorySize() | |
| 177 { | |
| 178 boost::mutex::scoped_lock lock(mutex_); | |
| 179 return memorySize_; | |
| 180 } | |
| 181 | |
| 182 | |
| 183 size_t OrthancInstancesCache::GetMaxMemorySize() | |
| 184 { | |
| 185 boost::mutex::scoped_lock lock(mutex_); | |
| 186 return maxMemorySize_; | |
| 187 } | |
| 188 | |
| 189 | |
| 190 void OrthancInstancesCache::SetMaxMemorySize(size_t size) | |
| 191 { | |
| 192 if (size <= 0) | |
| 193 { | |
| 194 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 195 } | |
| 196 | |
| 197 boost::mutex::scoped_lock lock(mutex_); | |
| 198 | |
| 199 while (memorySize_ > size) | |
| 200 { | |
| 201 RemoveOldest(); | |
| 202 } | |
| 203 | |
| 204 maxMemorySize_ = size; | |
| 205 CheckInvariants(); | |
| 206 } | |
| 207 | |
| 208 | |
| 209 void OrthancInstancesCache::GetInstanceInfo(size_t& size, | |
| 210 std::string& md5, | |
| 211 const std::string& instanceId) | |
| 212 { | |
| 213 // Check whether the instance is part of the cache | |
| 214 { | |
| 215 CacheAccessor accessor(*this, instanceId); | |
| 216 if (accessor.IsValid()) | |
| 217 { | |
| 218 size = accessor.GetInfo().GetSize(); | |
| 219 md5 = accessor.GetInfo().GetMD5(); | |
| 220 return; | |
| 221 } | |
| 222 } | |
| 223 | |
| 224 // The instance was not in the cache, load it | |
|
8
4c3437217518
fix for compatibility with simplified OrthancPluginCppWrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
0
diff
changeset
|
225 std::auto_ptr<SourceDicomInstance> instance(new SourceDicomInstance(instanceId)); |
| 0 | 226 size = instance->GetInfo().GetSize(); |
| 227 md5 = instance->GetInfo().GetMD5(); | |
| 228 | |
| 229 // Store the just-loaded DICOM instance into the cache | |
| 230 { | |
| 231 boost::mutex::scoped_lock lock(mutex_); | |
| 232 Store(instanceId, instance); | |
| 233 } | |
| 234 } | |
| 235 | |
| 236 | |
| 237 void OrthancInstancesCache::GetChunk(std::string& chunk, | |
| 238 std::string& md5, | |
| 239 const std::string& instanceId, | |
| 240 size_t offset, | |
| 241 size_t size) | |
| 242 { | |
| 243 // Check whether the instance is part of the cache | |
| 244 { | |
| 245 CacheAccessor accessor(*this, instanceId); | |
| 246 if (accessor.IsValid()) | |
| 247 { | |
| 248 accessor.GetChunk(chunk, md5, offset, size); | |
| 249 return; | |
| 250 } | |
| 251 } | |
| 252 | |
| 253 // The instance was not in the cache, load it | |
|
8
4c3437217518
fix for compatibility with simplified OrthancPluginCppWrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
0
diff
changeset
|
254 std::auto_ptr<SourceDicomInstance> instance(new SourceDicomInstance(instanceId)); |
| 0 | 255 instance->GetChunk(chunk, md5, 0, instance->GetInfo().GetSize()); |
| 256 | |
| 257 // Store the just-loaded DICOM instance into the cache | |
| 258 { | |
| 259 boost::mutex::scoped_lock lock(mutex_); | |
| 260 Store(instanceId, instance); | |
| 261 } | |
| 262 } | |
| 263 | |
| 264 | |
| 265 void OrthancInstancesCache::GetChunk(std::string& chunk, | |
| 266 std::string& md5, | |
| 267 const TransferBucket& bucket, | |
| 268 size_t chunkIndex) | |
| 269 { | |
| 270 GetChunk(chunk, md5, bucket.GetChunkInstanceId(chunkIndex), | |
| 271 bucket.GetChunkOffset(chunkIndex), | |
| 272 bucket.GetChunkSize(chunkIndex)); | |
| 273 } | |
| 274 } |