Mercurial > hg > orthanc
annotate OrthancFramework/Sources/MultiThreading/RunnableWorkersPool.cpp @ 4690:13efc0967cea
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Thu, 10 Jun 2021 11:21:22 +0200 |
| parents | d9473bd5ed43 |
| children | 7053502fbf97 |
| rev | line source |
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| 1679 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 1900 | 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
| 1679 | 4 * Department, University Hospital of Liege, Belgium |
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5 * Copyright (C) 2017-2021 Osimis S.A., Belgium |
| 1679 | 6 * |
| 7 * This program is free software: you can redistribute it and/or | |
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8 * modify it under the terms of the GNU Lesser General Public License |
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9 * as published by the Free Software Foundation, either version 3 of |
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10 * the License, or (at your option) any later version. |
| 1679 | 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 | |
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15 * Lesser General Public License for more details. |
| 1679 | 16 * |
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17 * You should have received a copy of the GNU Lesser General Public |
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18 * License along with this program. If not, see |
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19 * <http://www.gnu.org/licenses/>. |
| 1679 | 20 **/ |
| 21 | |
| 22 | |
| 23 #include "../PrecompiledHeaders.h" | |
| 24 #include "RunnableWorkersPool.h" | |
| 25 | |
| 26 #include "SharedMessageQueue.h" | |
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27 #include "../Compatibility.h" |
| 1679 | 28 #include "../OrthancException.h" |
| 29 #include "../Logging.h" | |
| 30 | |
| 31 namespace Orthanc | |
| 32 { | |
| 33 struct RunnableWorkersPool::PImpl | |
| 34 { | |
| 35 class Worker | |
| 36 { | |
| 37 private: | |
| 38 const bool& continue_; | |
| 39 SharedMessageQueue& queue_; | |
| 40 boost::thread thread_; | |
| 41 | |
| 42 static void WorkerThread(Worker* that) | |
| 43 { | |
| 44 while (that->continue_) | |
| 45 { | |
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46 try |
| 1679 | 47 { |
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48 std::unique_ptr<IDynamicObject> obj(that->queue_.Dequeue(100)); |
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49 if (obj.get() != NULL) |
| 1679 | 50 { |
| 51 IRunnableBySteps& runnable = *dynamic_cast<IRunnableBySteps*>(obj.get()); | |
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52 |
| 1679 | 53 bool wishToContinue = runnable.Step(); |
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54 |
| 1679 | 55 if (wishToContinue) |
| 56 { | |
| 57 // The runnable wishes to continue, reinsert it at the beginning of the queue | |
| 58 that->queue_.Enqueue(obj.release()); | |
| 59 } | |
| 60 } | |
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61 } |
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62 catch (OrthancException& e) |
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63 { |
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64 LOG(ERROR) << "Exception while handling some runnable object: " << e.What(); |
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65 } |
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66 catch (std::bad_alloc&) |
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67 { |
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68 LOG(ERROR) << "Not enough memory to handle some runnable object"; |
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69 } |
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70 catch (std::exception& e) |
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71 { |
| 2291 | 72 LOG(ERROR) << "std::exception while handling some runnable object: " << e.what(); |
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73 } |
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74 catch (...) |
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75 { |
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76 LOG(ERROR) << "Native exception while handling some runnable object"; |
| 1679 | 77 } |
| 78 } | |
| 79 } | |
| 80 | |
| 81 public: | |
| 82 Worker(const bool& globalContinue, | |
| 83 SharedMessageQueue& queue) : | |
| 84 continue_(globalContinue), | |
| 85 queue_(queue) | |
| 86 { | |
| 87 thread_ = boost::thread(WorkerThread, this); | |
| 88 } | |
| 89 | |
| 90 void Join() | |
| 91 { | |
| 92 if (thread_.joinable()) | |
| 93 { | |
| 94 thread_.join(); | |
| 95 } | |
| 96 } | |
| 97 }; | |
| 98 | |
| 99 | |
| 100 bool continue_; | |
| 101 std::vector<Worker*> workers_; | |
| 102 SharedMessageQueue queue_; | |
| 103 }; | |
| 104 | |
| 105 | |
| 106 | |
| 107 RunnableWorkersPool::RunnableWorkersPool(size_t countWorkers) : pimpl_(new PImpl) | |
| 108 { | |
| 109 pimpl_->continue_ = true; | |
| 110 | |
| 1847 | 111 if (countWorkers == 0) |
| 1679 | 112 { |
| 113 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
| 114 } | |
| 115 | |
| 116 pimpl_->workers_.resize(countWorkers); | |
| 117 | |
| 118 for (size_t i = 0; i < countWorkers; i++) | |
| 119 { | |
| 120 pimpl_->workers_[i] = new PImpl::Worker(pimpl_->continue_, pimpl_->queue_); | |
| 121 } | |
| 122 } | |
| 123 | |
| 124 | |
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125 void RunnableWorkersPool::Stop() |
| 1679 | 126 { |
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127 if (pimpl_->continue_) |
| 1679 | 128 { |
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129 pimpl_->continue_ = false; |
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130 |
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131 for (size_t i = 0; i < pimpl_->workers_.size(); i++) |
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132 { |
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133 PImpl::Worker* worker = pimpl_->workers_[i]; |
| 1679 | 134 |
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135 if (worker != NULL) |
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136 { |
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137 worker->Join(); |
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138 delete worker; |
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139 } |
| 1679 | 140 } |
| 141 } | |
| 142 } | |
| 143 | |
| 144 | |
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145 RunnableWorkersPool::~RunnableWorkersPool() |
| 1679 | 146 { |
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147 Stop(); |
| 1679 | 148 } |
| 149 | |
| 150 | |
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151 void RunnableWorkersPool::Add(IRunnableBySteps* runnable) |
| 1679 | 152 { |
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153 if (!pimpl_->continue_) |
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154 { |
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155 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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156 } |
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157 |
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158 pimpl_->queue_.Enqueue(runnable); |
| 1679 | 159 } |
| 160 } |