Mercurial > hg > orthanc-stone
annotate Framework/Oracle/ThreadedOracle.cpp @ 1104:98cdfe5768a4 broker
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Sat, 26 Oct 2019 16:43:08 +0200 |
| parents | 66e21ef2d657 |
| children | 79b1b541fe15 |
| rev | line source |
|---|---|
| 748 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
| 5 * Copyright (C) 2017-2019 Osimis S.A., Belgium | |
| 6 * | |
| 7 * This program is free software: you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU Affero General Public License | |
| 9 * as published by the Free Software Foundation, either version 3 of | |
| 10 * the License, or (at your option) any later version. | |
| 11 * | |
| 12 * This program is distributed in the hope that it will be useful, but | |
| 13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 * Affero General Public License for more details. | |
| 16 * | |
| 17 * You should have received a copy of the GNU Affero General Public License | |
| 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 **/ | |
| 20 | |
| 21 | |
| 22 #include "ThreadedOracle.h" | |
| 23 | |
| 24 #include "SleepOracleCommand.h" | |
| 25 | |
| 1077 | 26 #include <Core/Logging.h> |
| 748 | 27 #include <Core/OrthancException.h> |
| 28 | |
| 29 namespace OrthancStone | |
| 30 { | |
| 31 class ThreadedOracle::Item : public Orthanc::IDynamicObject | |
| 32 { | |
| 33 private: | |
| 1075 | 34 boost::weak_ptr<IObserver> receiver_; |
| 748 | 35 std::auto_ptr<IOracleCommand> command_; |
| 36 | |
| 37 public: | |
| 1075 | 38 Item(boost::weak_ptr<IObserver> receiver, |
| 748 | 39 IOracleCommand* command) : |
| 40 receiver_(receiver), | |
| 41 command_(command) | |
| 42 { | |
| 43 if (command == NULL) | |
| 44 { | |
| 45 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 46 } | |
| 47 } | |
| 48 | |
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49 boost::weak_ptr<IObserver> GetReceiver() |
| 748 | 50 { |
| 51 return receiver_; | |
| 52 } | |
| 53 | |
| 54 IOracleCommand& GetCommand() | |
| 55 { | |
| 56 assert(command_.get() != NULL); | |
| 57 return *command_; | |
| 58 } | |
| 59 }; | |
| 60 | |
| 61 | |
| 62 class ThreadedOracle::SleepingCommands : public boost::noncopyable | |
| 63 { | |
| 64 private: | |
| 65 class Item | |
| 66 { | |
| 67 private: | |
| 1075 | 68 boost::weak_ptr<IObserver> receiver_; |
| 748 | 69 std::auto_ptr<SleepOracleCommand> command_; |
| 70 boost::posix_time::ptime expiration_; | |
| 71 | |
| 72 public: | |
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73 Item(boost::weak_ptr<IObserver> receiver, |
| 748 | 74 SleepOracleCommand* command) : |
| 75 receiver_(receiver), | |
| 76 command_(command) | |
| 77 { | |
| 78 if (command == NULL) | |
| 79 { | |
| 80 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 81 } | |
| 82 | |
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83 expiration_ = (boost::posix_time::microsec_clock::local_time() + |
| 748 | 84 boost::posix_time::milliseconds(command_->GetDelay())); |
| 85 } | |
| 86 | |
| 87 const boost::posix_time::ptime& GetExpirationTime() const | |
| 88 { | |
| 89 return expiration_; | |
| 90 } | |
| 91 | |
| 92 void Awake(IMessageEmitter& emitter) | |
| 93 { | |
| 94 assert(command_.get() != NULL); | |
| 95 | |
| 96 SleepOracleCommand::TimeoutMessage message(*command_); | |
| 97 emitter.EmitMessage(receiver_, message); | |
| 98 } | |
| 99 }; | |
| 100 | |
| 101 typedef std::list<Item*> Content; | |
| 102 | |
| 103 boost::mutex mutex_; | |
| 104 Content content_; | |
| 105 | |
| 106 public: | |
| 107 ~SleepingCommands() | |
| 108 { | |
| 109 for (Content::iterator it = content_.begin(); it != content_.end(); ++it) | |
| 110 { | |
| 111 if (*it != NULL) | |
| 112 { | |
| 113 delete *it; | |
| 114 } | |
| 115 } | |
| 116 } | |
| 117 | |
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118 void Add(boost::weak_ptr<IObserver> receiver, |
| 748 | 119 SleepOracleCommand* command) // Takes ownership |
| 120 { | |
| 121 boost::mutex::scoped_lock lock(mutex_); | |
| 122 | |
| 123 content_.push_back(new Item(receiver, command)); | |
| 124 } | |
| 125 | |
| 126 void AwakeExpired(IMessageEmitter& emitter) | |
| 127 { | |
| 128 boost::mutex::scoped_lock lock(mutex_); | |
| 129 | |
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130 const boost::posix_time::ptime now = boost::posix_time::microsec_clock::local_time(); |
| 748 | 131 |
| 132 Content stillSleeping; | |
| 133 | |
| 134 for (Content::iterator it = content_.begin(); it != content_.end(); ++it) | |
| 135 { | |
| 136 if (*it != NULL && | |
| 137 (*it)->GetExpirationTime() <= now) | |
| 138 { | |
| 139 (*it)->Awake(emitter); | |
| 140 delete *it; | |
| 141 *it = NULL; | |
| 142 } | |
| 143 else | |
| 144 { | |
| 145 stillSleeping.push_back(*it); | |
| 146 } | |
| 147 } | |
| 148 | |
| 149 // Compact the still-sleeping commands | |
| 150 content_ = stillSleeping; | |
| 151 } | |
| 152 }; | |
| 153 | |
| 154 | |
| 155 void ThreadedOracle::Step() | |
| 156 { | |
| 157 std::auto_ptr<Orthanc::IDynamicObject> object(queue_.Dequeue(100)); | |
| 158 | |
| 159 if (object.get() != NULL) | |
| 160 { | |
| 161 Item& item = dynamic_cast<Item&>(*object); | |
| 162 | |
| 1077 | 163 if (item.GetCommand().GetType() == IOracleCommand::Type_Sleep) |
| 748 | 164 { |
| 1077 | 165 SleepOracleCommand& command = dynamic_cast<SleepOracleCommand&>(item.GetCommand()); |
| 166 | |
| 167 std::auto_ptr<SleepOracleCommand> copy(new SleepOracleCommand(command.GetDelay())); | |
| 168 | |
| 169 if (command.HasPayload()) | |
| 748 | 170 { |
| 1077 | 171 copy->SetPayload(command.ReleasePayload()); |
| 748 | 172 } |
| 1077 | 173 |
| 174 sleepingCommands_->Add(item.GetReceiver(), copy.release()); | |
| 748 | 175 } |
| 1077 | 176 else |
| 748 | 177 { |
| 1104 | 178 GenericOracleRunner runner; |
| 179 runner.SetOrthanc(orthanc_); | |
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180 std::auto_ptr<IMessage> message(runner.Run(item.GetCommand())); |
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181 |
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182 emitter_.EmitMessage(item.GetReceiver(), *message); |
| 748 | 183 } |
| 184 } | |
| 185 } | |
| 186 | |
| 187 | |
| 188 void ThreadedOracle::Worker(ThreadedOracle* that) | |
| 189 { | |
| 190 assert(that != NULL); | |
| 191 | |
| 192 for (;;) | |
| 193 { | |
| 194 { | |
| 195 boost::mutex::scoped_lock lock(that->mutex_); | |
| 196 if (that->state_ != State_Running) | |
| 197 { | |
| 198 return; | |
| 199 } | |
| 200 } | |
| 201 | |
| 202 that->Step(); | |
| 203 } | |
| 204 } | |
| 205 | |
| 206 | |
| 207 void ThreadedOracle::SleepingWorker(ThreadedOracle* that) | |
| 208 { | |
| 209 assert(that != NULL); | |
| 210 | |
| 211 for (;;) | |
| 212 { | |
| 213 { | |
| 214 boost::mutex::scoped_lock lock(that->mutex_); | |
| 215 if (that->state_ != State_Running) | |
| 216 { | |
| 217 return; | |
| 218 } | |
| 219 } | |
| 220 | |
| 221 that->sleepingCommands_->AwakeExpired(that->emitter_); | |
| 222 | |
| 223 boost::this_thread::sleep(boost::posix_time::milliseconds(that->sleepingTimeResolution_)); | |
| 224 } | |
| 225 } | |
| 226 | |
| 227 | |
| 228 void ThreadedOracle::StopInternal() | |
| 229 { | |
| 230 { | |
| 231 boost::mutex::scoped_lock lock(mutex_); | |
| 232 | |
| 233 if (state_ == State_Setup || | |
| 234 state_ == State_Stopped) | |
| 235 { | |
| 236 return; | |
| 237 } | |
| 238 else | |
| 239 { | |
| 240 state_ = State_Stopped; | |
| 241 } | |
| 242 } | |
| 243 | |
| 244 if (sleepingWorker_.joinable()) | |
| 245 { | |
| 246 sleepingWorker_.join(); | |
| 247 } | |
| 248 | |
| 249 for (size_t i = 0; i < workers_.size(); i++) | |
| 250 { | |
| 251 if (workers_[i] != NULL) | |
| 252 { | |
| 253 if (workers_[i]->joinable()) | |
| 254 { | |
| 255 workers_[i]->join(); | |
| 256 } | |
| 257 | |
| 258 delete workers_[i]; | |
| 259 } | |
| 260 } | |
| 261 } | |
| 262 | |
| 263 | |
| 264 ThreadedOracle::ThreadedOracle(IMessageEmitter& emitter) : | |
| 265 emitter_(emitter), | |
| 266 state_(State_Setup), | |
| 267 workers_(4), | |
| 268 sleepingCommands_(new SleepingCommands), | |
| 269 sleepingTimeResolution_(50) // By default, time resolution of 50ms | |
| 270 { | |
| 271 } | |
| 272 | |
| 273 | |
| 765 | 274 ThreadedOracle::~ThreadedOracle() |
| 275 { | |
| 276 if (state_ == State_Running) | |
| 277 { | |
| 278 LOG(ERROR) << "The threaded oracle is still running, explicit call to " | |
| 279 << "Stop() is mandatory to avoid crashes"; | |
| 280 } | |
| 281 | |
| 282 try | |
| 283 { | |
| 284 StopInternal(); | |
| 285 } | |
| 286 catch (Orthanc::OrthancException& e) | |
| 287 { | |
| 288 LOG(ERROR) << "Exception while stopping the threaded oracle: " << e.What(); | |
| 289 } | |
| 290 catch (...) | |
| 291 { | |
| 292 LOG(ERROR) << "Native exception while stopping the threaded oracle"; | |
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293 } |
| 765 | 294 } |
| 295 | |
| 296 | |
| 748 | 297 void ThreadedOracle::SetOrthancParameters(const Orthanc::WebServiceParameters& orthanc) |
| 298 { | |
| 299 boost::mutex::scoped_lock lock(mutex_); | |
| 300 | |
| 301 if (state_ != State_Setup) | |
| 302 { | |
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303 LOG(ERROR) << "ThreadedOracle::SetOrthancParameters(): (state_ != State_Setup)"; |
| 748 | 304 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
| 305 } | |
| 306 else | |
| 307 { | |
| 308 orthanc_ = orthanc; | |
| 309 } | |
| 310 } | |
| 311 | |
| 312 | |
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313 void ThreadedOracle::SetThreadsCount(unsigned int count) |
| 748 | 314 { |
| 315 boost::mutex::scoped_lock lock(mutex_); | |
| 316 | |
| 317 if (count <= 0) | |
| 318 { | |
| 319 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 320 } | |
| 321 else if (state_ != State_Setup) | |
| 322 { | |
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323 LOG(ERROR) << "ThreadedOracle::SetThreadsCount(): (state_ != State_Setup)"; |
| 748 | 324 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
| 325 } | |
| 326 else | |
| 327 { | |
| 328 workers_.resize(count); | |
| 329 } | |
| 330 } | |
| 331 | |
| 332 | |
| 333 void ThreadedOracle::SetSleepingTimeResolution(unsigned int milliseconds) | |
| 334 { | |
| 335 boost::mutex::scoped_lock lock(mutex_); | |
| 336 | |
| 337 if (milliseconds <= 0) | |
| 338 { | |
| 339 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 340 } | |
| 341 else if (state_ != State_Setup) | |
| 342 { | |
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343 LOG(ERROR) << "ThreadedOracle::SetSleepingTimeResolution(): (state_ != State_Setup)"; |
| 748 | 344 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
| 345 } | |
| 346 else | |
| 347 { | |
| 348 sleepingTimeResolution_ = milliseconds; | |
| 349 } | |
| 350 } | |
| 351 | |
| 352 | |
| 353 void ThreadedOracle::Start() | |
| 354 { | |
| 355 boost::mutex::scoped_lock lock(mutex_); | |
| 356 | |
| 357 if (state_ != State_Setup) | |
| 358 { | |
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359 LOG(ERROR) << "ThreadedOracle::Start(): (state_ != State_Setup)"; |
| 748 | 360 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
| 361 } | |
| 362 else | |
| 363 { | |
| 364 state_ = State_Running; | |
| 365 | |
| 366 for (unsigned int i = 0; i < workers_.size(); i++) | |
| 367 { | |
| 368 workers_[i] = new boost::thread(Worker, this); | |
| 369 } | |
| 370 | |
| 371 sleepingWorker_ = boost::thread(SleepingWorker, this); | |
| 372 } | |
| 373 } | |
| 374 | |
| 375 | |
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376 bool ThreadedOracle::Schedule(boost::shared_ptr<IObserver> receiver, |
| 748 | 377 IOracleCommand* command) |
| 378 { | |
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379 std::auto_ptr<Item> item(new Item(receiver, command)); |
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380 |
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381 { |
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382 boost::mutex::scoped_lock lock(mutex_); |
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383 |
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384 if (state_ == State_Running) |
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385 { |
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386 //LOG(INFO) << "New oracle command queued"; |
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387 queue_.Enqueue(item.release()); |
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388 return true; |
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389 } |
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390 else |
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391 { |
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392 LOG(INFO) << "Command not enqueued, as the oracle is stopped"; |
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393 return false; |
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394 } |
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395 } |
| 748 | 396 } |
| 397 } |