Mercurial > hg > orthanc
annotate Core/MultiThreading/BagOfTasksProcessor.cpp @ 2016:0ae26237569a
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Mon, 13 Jun 2016 15:26:20 +0200 |
| parents | 6ac7f31fc543 |
| children | 5b818f677dd6 |
| rev | line source |
|---|---|
| 1920 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
| 5 * | |
| 6 * This program is free software: you can redistribute it and/or | |
| 7 * modify it under the terms of the GNU General Public License as | |
| 8 * published by the Free Software Foundation, either version 3 of the | |
| 9 * License, or (at your option) any later version. | |
| 10 * | |
| 11 * In addition, as a special exception, the copyright holders of this | |
| 12 * program give permission to link the code of its release with the | |
| 13 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
| 14 * that use the same license as the "OpenSSL" library), and distribute | |
| 15 * the linked executables. You must obey the GNU General Public License | |
| 16 * in all respects for all of the code used other than "OpenSSL". If you | |
| 17 * modify file(s) with this exception, you may extend this exception to | |
| 18 * your version of the file(s), but you are not obligated to do so. If | |
| 19 * you do not wish to do so, delete this exception statement from your | |
| 20 * version. If you delete this exception statement from all source files | |
| 21 * in the program, then also delete it here. | |
| 22 * | |
| 23 * This program is distributed in the hope that it will be useful, but | |
| 24 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 26 * General Public License for more details. | |
| 27 * | |
| 28 * You should have received a copy of the GNU General Public License | |
| 29 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 30 **/ | |
| 31 | |
| 32 | |
| 33 #include "../PrecompiledHeaders.h" | |
| 34 #include "BagOfTasksProcessor.h" | |
| 35 | |
| 36 #include "../OrthancException.h" | |
| 37 | |
| 38 | |
| 39 namespace Orthanc | |
| 40 { | |
| 41 class BagOfTasksProcessor::Task : public IDynamicObject | |
| 42 { | |
| 43 private: | |
| 44 uint64_t bag_; | |
| 45 std::auto_ptr<ICommand> command_; | |
| 46 | |
| 47 public: | |
| 48 Task(uint64_t bag, | |
| 49 ICommand* command) : | |
| 50 bag_(bag), | |
| 51 command_(command) | |
| 52 { | |
| 53 } | |
| 54 | |
| 55 bool Execute() | |
| 56 { | |
| 57 try | |
| 58 { | |
| 59 return command_->Execute(); | |
| 60 } | |
| 61 catch (OrthancException&) | |
| 62 { | |
| 63 return false; | |
| 64 } | |
| 65 catch (std::runtime_error&) | |
| 66 { | |
| 67 return false; | |
| 68 } | |
| 69 } | |
| 70 | |
| 71 uint64_t GetBag() | |
| 72 { | |
| 73 return bag_; | |
| 74 } | |
| 75 }; | |
| 76 | |
| 77 | |
| 78 void BagOfTasksProcessor::Worker(BagOfTasksProcessor* that) | |
| 79 { | |
| 80 while (that->continue_) | |
| 81 { | |
| 82 std::auto_ptr<IDynamicObject> obj(that->queue_.Dequeue(100)); | |
| 83 if (obj.get() != NULL) | |
| 84 { | |
| 85 Task& task = *dynamic_cast<Task*>(obj.get()); | |
| 86 | |
| 87 { | |
| 88 boost::mutex::scoped_lock lock(that->mutex_); | |
| 89 | |
| 90 Bags::iterator bag = that->bags_.find(task.GetBag()); | |
| 91 assert(bag != that->bags_.end()); | |
| 92 assert(bag->second.done_ < bag->second.size_); | |
| 93 | |
| 94 if (bag->second.status_ != BagStatus_Running) | |
| 95 { | |
| 96 // This bag of task has failed or is tagged as canceled, do nothing | |
| 97 bag->second.done_ += 1; | |
| 98 continue; | |
| 99 } | |
| 100 } | |
| 101 | |
| 102 bool success = task.Execute(); | |
| 103 | |
| 104 { | |
| 105 boost::mutex::scoped_lock lock(that->mutex_); | |
| 106 | |
| 107 Bags::iterator bag = that->bags_.find(task.GetBag()); | |
| 108 assert(bag != that->bags_.end()); | |
| 109 | |
| 110 if (!success) | |
| 111 { | |
| 112 bag->second.status_ = BagStatus_Failed; | |
| 113 } | |
| 114 | |
| 115 assert(bag->second.done_ < bag->second.size_); | |
| 116 bag->second.done_ += 1; | |
| 117 | |
| 118 if (bag->second.done_ == bag->second.size_) | |
| 119 { | |
| 120 that->exitStatus_[task.GetBag()] = (bag->second.status_ == BagStatus_Running); | |
| 121 that->bagFinished_.notify_all(); | |
| 122 } | |
| 123 } | |
| 124 } | |
| 125 } | |
| 126 } | |
| 127 | |
| 128 | |
| 129 void BagOfTasksProcessor::Cancel(int64_t bag) | |
| 130 { | |
| 131 boost::mutex::scoped_lock lock(mutex_); | |
| 132 | |
| 133 Bags::iterator it = bags_.find(bag); | |
| 134 if (it != bags_.end()) | |
| 135 { | |
| 136 it->second.status_ = BagStatus_Canceled; | |
| 137 } | |
| 138 } | |
| 139 | |
| 140 | |
| 141 bool BagOfTasksProcessor::Join(int64_t bag) | |
| 142 { | |
| 143 boost::mutex::scoped_lock lock(mutex_); | |
| 144 | |
| 145 while (continue_) | |
| 146 { | |
| 147 ExitStatus::iterator it = exitStatus_.find(bag); | |
| 148 if (it == exitStatus_.end()) // The bag is still running | |
| 149 { | |
| 150 bagFinished_.wait(lock); | |
| 151 } | |
| 152 else | |
| 153 { | |
| 154 bool status = it->second; | |
| 155 exitStatus_.erase(it); | |
| 156 return status; | |
| 157 } | |
| 158 } | |
| 159 | |
| 160 return false; // The processor is stopping | |
| 161 } | |
| 162 | |
| 163 | |
| 164 float BagOfTasksProcessor::GetProgress(int64_t bag) | |
| 165 { | |
| 166 boost::mutex::scoped_lock lock(mutex_); | |
| 167 | |
| 168 Bags::const_iterator it = bags_.find(bag); | |
| 169 if (it == bags_.end()) | |
| 170 { | |
| 171 // The bag of tasks has finished | |
| 172 return 1.0f; | |
| 173 } | |
| 174 else | |
| 175 { | |
| 176 return (static_cast<float>(it->second.done_) / | |
| 177 static_cast<float>(it->second.size_)); | |
| 178 } | |
| 179 } | |
| 180 | |
| 181 | |
| 182 bool BagOfTasksProcessor::Handle::Join() | |
| 183 { | |
| 184 if (hasJoined_) | |
| 185 { | |
| 186 return status_; | |
| 187 } | |
| 188 else | |
| 189 { | |
| 190 status_ = that_.Join(bag_); | |
| 191 hasJoined_ = true; | |
| 192 return status_; | |
| 193 } | |
| 194 } | |
| 195 | |
| 196 | |
| 197 BagOfTasksProcessor::BagOfTasksProcessor(size_t countThreads) : | |
| 198 countBags_(0), | |
| 199 continue_(true) | |
| 200 { | |
| 2016 | 201 if (countThreads == 0) |
| 1920 | 202 { |
| 203 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
| 204 } | |
| 205 | |
| 206 threads_.resize(countThreads); | |
| 207 | |
| 208 for (size_t i = 0; i < threads_.size(); i++) | |
| 209 { | |
| 210 threads_[i] = new boost::thread(Worker, this); | |
| 211 } | |
| 212 } | |
| 213 | |
| 214 | |
| 215 BagOfTasksProcessor::~BagOfTasksProcessor() | |
| 216 { | |
| 217 continue_ = false; | |
| 218 | |
| 219 bagFinished_.notify_all(); // Wakes up all the pending "Join()" | |
| 220 | |
| 221 for (size_t i = 0; i < threads_.size(); i++) | |
| 222 { | |
| 223 if (threads_[i]) | |
| 224 { | |
| 225 if (threads_[i]->joinable()) | |
| 226 { | |
| 227 threads_[i]->join(); | |
| 228 } | |
| 229 | |
| 230 delete threads_[i]; | |
| 231 threads_[i] = NULL; | |
| 232 } | |
| 233 } | |
| 234 } | |
| 235 | |
| 236 | |
| 237 BagOfTasksProcessor::Handle* BagOfTasksProcessor::Submit(BagOfTasks& tasks) | |
| 238 { | |
|
1923
6ac7f31fc543
fix freeze if empty bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1920
diff
changeset
|
239 if (tasks.GetSize() == 0) |
|
6ac7f31fc543
fix freeze if empty bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1920
diff
changeset
|
240 { |
|
6ac7f31fc543
fix freeze if empty bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1920
diff
changeset
|
241 return new Handle(*this, 0, true); |
|
6ac7f31fc543
fix freeze if empty bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1920
diff
changeset
|
242 } |
|
6ac7f31fc543
fix freeze if empty bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1920
diff
changeset
|
243 |
| 1920 | 244 boost::mutex::scoped_lock lock(mutex_); |
| 245 | |
| 246 uint64_t id = countBags_; | |
| 247 countBags_ += 1; | |
| 248 | |
| 249 Bag bag(tasks.GetSize()); | |
| 250 bags_[id] = bag; | |
| 251 | |
| 252 while (!tasks.IsEmpty()) | |
| 253 { | |
| 254 queue_.Enqueue(new Task(id, tasks.Pop())); | |
| 255 } | |
| 256 | |
|
1923
6ac7f31fc543
fix freeze if empty bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1920
diff
changeset
|
257 return new Handle(*this, id, false); |
| 1920 | 258 } |
| 259 } |