Mercurial > hg > orthanc
annotate Core/MultiThreading/RunnableWorkersPool.cpp @ 2245:f8d4f151f660
osimis address
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 04 Jan 2017 13:00:01 +0100 |
parents | a3a65de1840f |
children | 4d500a555aad |
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 Osimis, Belgium |
1679 | 6 * |
7 * This program is free software: you can redistribute it and/or | |
8 * modify it under the terms of the GNU General Public License as | |
9 * published by the Free Software Foundation, either version 3 of the | |
10 * License, or (at your option) any later version. | |
11 * | |
12 * In addition, as a special exception, the copyright holders of this | |
13 * program give permission to link the code of its release with the | |
14 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
15 * that use the same license as the "OpenSSL" library), and distribute | |
16 * the linked executables. You must obey the GNU General Public License | |
17 * in all respects for all of the code used other than "OpenSSL". If you | |
18 * modify file(s) with this exception, you may extend this exception to | |
19 * your version of the file(s), but you are not obligated to do so. If | |
20 * you do not wish to do so, delete this exception statement from your | |
21 * version. If you delete this exception statement from all source files | |
22 * in the program, then also delete it here. | |
23 * | |
24 * This program is distributed in the hope that it will be useful, but | |
25 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
27 * General Public License for more details. | |
28 * | |
29 * You should have received a copy of the GNU General Public License | |
30 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
31 **/ | |
32 | |
33 | |
34 #include "../PrecompiledHeaders.h" | |
35 #include "RunnableWorkersPool.h" | |
36 | |
37 #include "SharedMessageQueue.h" | |
38 #include "../OrthancException.h" | |
39 #include "../Logging.h" | |
40 | |
41 namespace Orthanc | |
42 { | |
43 struct RunnableWorkersPool::PImpl | |
44 { | |
45 class Worker | |
46 { | |
47 private: | |
48 const bool& continue_; | |
49 SharedMessageQueue& queue_; | |
50 boost::thread thread_; | |
51 | |
52 static void WorkerThread(Worker* that) | |
53 { | |
54 while (that->continue_) | |
55 { | |
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56 try |
1679 | 57 { |
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58 std::auto_ptr<IDynamicObject> obj(that->queue_.Dequeue(100)); |
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59 if (obj.get() != NULL) |
1679 | 60 { |
61 IRunnableBySteps& runnable = *dynamic_cast<IRunnableBySteps*>(obj.get()); | |
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62 |
1679 | 63 bool wishToContinue = runnable.Step(); |
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64 |
1679 | 65 if (wishToContinue) |
66 { | |
67 // The runnable wishes to continue, reinsert it at the beginning of the queue | |
68 that->queue_.Enqueue(obj.release()); | |
69 } | |
70 } | |
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71 } |
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72 catch (OrthancException& e) |
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73 { |
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74 LOG(ERROR) << "Exception while handling some runnable object: " << e.What(); |
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75 } |
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76 catch (std::bad_alloc&) |
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77 { |
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78 LOG(ERROR) << "Not enough memory to handle some runnable object"; |
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79 } |
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80 catch (...) |
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81 { |
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82 LOG(ERROR) << "Native exception while handling some runnable object"; |
1679 | 83 } |
84 } | |
85 } | |
86 | |
87 public: | |
88 Worker(const bool& globalContinue, | |
89 SharedMessageQueue& queue) : | |
90 continue_(globalContinue), | |
91 queue_(queue) | |
92 { | |
93 thread_ = boost::thread(WorkerThread, this); | |
94 } | |
95 | |
96 void Join() | |
97 { | |
98 if (thread_.joinable()) | |
99 { | |
100 thread_.join(); | |
101 } | |
102 } | |
103 }; | |
104 | |
105 | |
106 bool continue_; | |
107 std::vector<Worker*> workers_; | |
108 SharedMessageQueue queue_; | |
109 }; | |
110 | |
111 | |
112 | |
113 RunnableWorkersPool::RunnableWorkersPool(size_t countWorkers) : pimpl_(new PImpl) | |
114 { | |
115 pimpl_->continue_ = true; | |
116 | |
1847 | 117 if (countWorkers == 0) |
1679 | 118 { |
119 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
120 } | |
121 | |
122 pimpl_->workers_.resize(countWorkers); | |
123 | |
124 for (size_t i = 0; i < countWorkers; i++) | |
125 { | |
126 pimpl_->workers_[i] = new PImpl::Worker(pimpl_->continue_, pimpl_->queue_); | |
127 } | |
128 } | |
129 | |
130 | |
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131 void RunnableWorkersPool::Stop() |
1679 | 132 { |
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133 if (pimpl_->continue_) |
1679 | 134 { |
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135 pimpl_->continue_ = false; |
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136 |
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137 for (size_t i = 0; i < pimpl_->workers_.size(); i++) |
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138 { |
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139 PImpl::Worker* worker = pimpl_->workers_[i]; |
1679 | 140 |
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141 if (worker != NULL) |
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142 { |
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143 worker->Join(); |
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144 delete worker; |
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145 } |
1679 | 146 } |
147 } | |
148 } | |
149 | |
150 | |
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151 RunnableWorkersPool::~RunnableWorkersPool() |
1679 | 152 { |
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153 Stop(); |
1679 | 154 } |
155 | |
156 | |
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157 void RunnableWorkersPool::Add(IRunnableBySteps* runnable) |
1679 | 158 { |
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159 if (!pimpl_->continue_) |
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160 { |
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161 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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162 } |
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163 |
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164 pimpl_->queue_.Enqueue(runnable); |
1679 | 165 } |
166 } |