Mercurial > hg > orthanc-stone
annotate Framework/Oracle/ThreadedOracle.cpp @ 1104:98cdfe5768a4 broker
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Sat, 26 Oct 2019 16:43:08 +0200 |
parents | 66e21ef2d657 |
children | 79b1b541fe15 |
rev | line source |
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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 } |