Mercurial > hg > orthanc
annotate OrthancFramework/Resources/Graveyard/Multithreading/BagOfTasksProcessor.cpp @ 5485:48b8dae6dc77
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Thu, 04 Jan 2024 15:10:42 +0100 |
| parents | 0ea402b4d901 |
| children | f7adfb22e20e |
| 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 | |
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5 * Copyright (C) 2017-2024 Osimis S.A., Belgium |
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6 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
| 1920 | 7 * |
| 8 * This program is free software: you can redistribute it and/or | |
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9 * modify it under the terms of the GNU Lesser General Public License |
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10 * as published by the Free Software Foundation, either version 3 of |
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11 * the License, or (at your option) any later version. |
| 1920 | 12 * |
| 13 * This program is distributed in the hope that it will be useful, but | |
| 14 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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16 * Lesser General Public License for more details. |
| 1920 | 17 * |
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18 * You should have received a copy of the GNU Lesser General Public |
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19 * License along with this program. If not, see |
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20 * <http://www.gnu.org/licenses/>. |
| 1920 | 21 **/ |
| 22 | |
| 23 | |
| 24 #include "../PrecompiledHeaders.h" | |
| 25 #include "BagOfTasksProcessor.h" | |
| 26 | |
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27 #include "../Logging.h" |
| 1920 | 28 #include "../OrthancException.h" |
| 29 | |
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30 #include <stdio.h> |
| 1920 | 31 |
| 32 namespace Orthanc | |
| 33 { | |
| 34 class BagOfTasksProcessor::Task : public IDynamicObject | |
| 35 { | |
| 36 private: | |
| 37 uint64_t bag_; | |
| 38 std::auto_ptr<ICommand> command_; | |
| 39 | |
| 40 public: | |
| 41 Task(uint64_t bag, | |
| 42 ICommand* command) : | |
| 43 bag_(bag), | |
| 44 command_(command) | |
| 45 { | |
| 46 } | |
| 47 | |
| 48 bool Execute() | |
| 49 { | |
| 50 try | |
| 51 { | |
| 52 return command_->Execute(); | |
| 53 } | |
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54 catch (OrthancException& e) |
| 1920 | 55 { |
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56 LOG(ERROR) << "Exception while processing a bag of tasks: " << e.What(); |
| 1920 | 57 return false; |
| 58 } | |
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59 catch (std::runtime_error& e) |
| 1920 | 60 { |
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61 LOG(ERROR) << "Runtime exception while processing a bag of tasks: " << e.what(); |
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62 return false; |
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63 } |
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64 catch (...) |
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65 { |
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66 LOG(ERROR) << "Native exception while processing a bag of tasks"; |
| 1920 | 67 return false; |
| 68 } | |
| 69 } | |
| 70 | |
| 71 uint64_t GetBag() | |
| 72 { | |
| 73 return bag_; | |
| 74 } | |
| 75 }; | |
| 76 | |
| 77 | |
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78 void BagOfTasksProcessor::SignalProgress(Task& task, |
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79 Bag& bag) |
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80 { |
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81 assert(bag.done_ < bag.size_); |
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82 |
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83 bag.done_ += 1; |
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84 |
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85 if (bag.done_ == bag.size_) |
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86 { |
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87 exitStatus_[task.GetBag()] = (bag.status_ == BagStatus_Running); |
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88 bagFinished_.notify_all(); |
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89 } |
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90 } |
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91 |
| 1920 | 92 void BagOfTasksProcessor::Worker(BagOfTasksProcessor* that) |
| 93 { | |
| 94 while (that->continue_) | |
| 95 { | |
| 96 std::auto_ptr<IDynamicObject> obj(that->queue_.Dequeue(100)); | |
| 97 if (obj.get() != NULL) | |
| 98 { | |
| 99 Task& task = *dynamic_cast<Task*>(obj.get()); | |
| 100 | |
| 101 { | |
| 102 boost::mutex::scoped_lock lock(that->mutex_); | |
| 103 | |
| 104 Bags::iterator bag = that->bags_.find(task.GetBag()); | |
| 105 assert(bag != that->bags_.end()); | |
| 106 assert(bag->second.done_ < bag->second.size_); | |
| 107 | |
| 108 if (bag->second.status_ != BagStatus_Running) | |
| 109 { | |
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110 // Do not execute this task, as its parent bag of tasks |
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111 // has failed or is tagged as canceled |
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112 that->SignalProgress(task, bag->second); |
| 1920 | 113 continue; |
| 114 } | |
| 115 } | |
| 116 | |
| 117 bool success = task.Execute(); | |
| 118 | |
| 119 { | |
| 120 boost::mutex::scoped_lock lock(that->mutex_); | |
| 121 | |
| 122 Bags::iterator bag = that->bags_.find(task.GetBag()); | |
| 123 assert(bag != that->bags_.end()); | |
| 124 | |
| 125 if (!success) | |
| 126 { | |
| 127 bag->second.status_ = BagStatus_Failed; | |
| 128 } | |
| 129 | |
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130 that->SignalProgress(task, bag->second); |
| 1920 | 131 } |
| 132 } | |
| 133 } | |
| 134 } | |
| 135 | |
| 136 | |
| 137 void BagOfTasksProcessor::Cancel(int64_t bag) | |
| 138 { | |
| 139 boost::mutex::scoped_lock lock(mutex_); | |
| 140 | |
| 141 Bags::iterator it = bags_.find(bag); | |
| 142 if (it != bags_.end()) | |
| 143 { | |
| 144 it->second.status_ = BagStatus_Canceled; | |
| 145 } | |
| 146 } | |
| 147 | |
| 148 | |
| 149 bool BagOfTasksProcessor::Join(int64_t bag) | |
| 150 { | |
| 151 boost::mutex::scoped_lock lock(mutex_); | |
| 152 | |
| 153 while (continue_) | |
| 154 { | |
| 155 ExitStatus::iterator it = exitStatus_.find(bag); | |
| 156 if (it == exitStatus_.end()) // The bag is still running | |
| 157 { | |
| 158 bagFinished_.wait(lock); | |
| 159 } | |
| 160 else | |
| 161 { | |
| 162 bool status = it->second; | |
| 163 exitStatus_.erase(it); | |
| 164 return status; | |
| 165 } | |
| 166 } | |
| 167 | |
| 168 return false; // The processor is stopping | |
| 169 } | |
| 170 | |
| 171 | |
| 172 float BagOfTasksProcessor::GetProgress(int64_t bag) | |
| 173 { | |
| 174 boost::mutex::scoped_lock lock(mutex_); | |
| 175 | |
| 176 Bags::const_iterator it = bags_.find(bag); | |
| 177 if (it == bags_.end()) | |
| 178 { | |
| 179 // The bag of tasks has finished | |
| 180 return 1.0f; | |
| 181 } | |
| 182 else | |
| 183 { | |
| 184 return (static_cast<float>(it->second.done_) / | |
| 185 static_cast<float>(it->second.size_)); | |
| 186 } | |
| 187 } | |
| 188 | |
| 189 | |
| 190 bool BagOfTasksProcessor::Handle::Join() | |
| 191 { | |
| 192 if (hasJoined_) | |
| 193 { | |
| 194 return status_; | |
| 195 } | |
| 196 else | |
| 197 { | |
| 198 status_ = that_.Join(bag_); | |
| 199 hasJoined_ = true; | |
| 200 return status_; | |
| 201 } | |
| 202 } | |
| 203 | |
| 204 | |
| 205 BagOfTasksProcessor::BagOfTasksProcessor(size_t countThreads) : | |
| 206 countBags_(0), | |
| 207 continue_(true) | |
| 208 { | |
| 2016 | 209 if (countThreads == 0) |
| 1920 | 210 { |
| 211 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
| 212 } | |
| 213 | |
| 214 threads_.resize(countThreads); | |
| 215 | |
| 216 for (size_t i = 0; i < threads_.size(); i++) | |
| 217 { | |
| 218 threads_[i] = new boost::thread(Worker, this); | |
| 219 } | |
| 220 } | |
| 221 | |
| 222 | |
| 223 BagOfTasksProcessor::~BagOfTasksProcessor() | |
| 224 { | |
| 225 continue_ = false; | |
| 226 | |
| 227 bagFinished_.notify_all(); // Wakes up all the pending "Join()" | |
| 228 | |
| 229 for (size_t i = 0; i < threads_.size(); i++) | |
| 230 { | |
| 231 if (threads_[i]) | |
| 232 { | |
| 233 if (threads_[i]->joinable()) | |
| 234 { | |
| 235 threads_[i]->join(); | |
| 236 } | |
| 237 | |
| 238 delete threads_[i]; | |
| 239 threads_[i] = NULL; | |
| 240 } | |
| 241 } | |
| 242 } | |
| 243 | |
| 244 | |
| 245 BagOfTasksProcessor::Handle* BagOfTasksProcessor::Submit(BagOfTasks& tasks) | |
| 246 { | |
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247 if (tasks.GetSize() == 0) |
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248 { |
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249 return new Handle(*this, 0, true); |
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250 } |
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251 |
| 1920 | 252 boost::mutex::scoped_lock lock(mutex_); |
| 253 | |
| 254 uint64_t id = countBags_; | |
| 255 countBags_ += 1; | |
| 256 | |
| 257 Bag bag(tasks.GetSize()); | |
| 258 bags_[id] = bag; | |
| 259 | |
| 260 while (!tasks.IsEmpty()) | |
| 261 { | |
| 262 queue_.Enqueue(new Task(id, tasks.Pop())); | |
| 263 } | |
| 264 | |
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265 return new Handle(*this, id, false); |
| 1920 | 266 } |
| 267 } |