Mercurial > hg > orthanc-stone
annotate Platforms/Generic/Oracle.cpp @ 362:12cec26d08ce am-2
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Tue, 30 Oct 2018 18:30:48 +0100 |
| parents | 14ef1227120f |
| children | b70e9be013e4 |
| rev | line source |
|---|---|
| 80 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
|
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5 * Copyright (C) 2017-2018 Osimis S.A., Belgium |
| 80 | 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 "Oracle.h" | |
| 23 | |
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24 #include <Core/Logging.h> |
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25 #include <Core/MultiThreading/SharedMessageQueue.h> |
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26 #include <Core/OrthancException.h> |
| 80 | 27 |
| 28 #include <vector> | |
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29 #include <stdio.h> |
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30 #include <boost/thread/mutex.hpp> |
| 80 | 31 |
| 32 namespace OrthancStone | |
| 33 { | |
| 34 class Oracle::PImpl | |
| 35 { | |
| 36 private: | |
| 37 enum State | |
| 38 { | |
| 39 State_Init, | |
| 40 State_Started, | |
| 41 State_Stopped | |
| 42 }; | |
| 43 | |
| 44 boost::mutex oracleMutex_; | |
| 45 State state_; | |
| 46 std::vector<boost::thread*> threads_; | |
| 47 Orthanc::SharedMessageQueue queue_; | |
| 48 | |
| 49 static void Worker(PImpl* that) | |
| 50 { | |
| 51 for (;;) | |
| 52 { | |
| 53 State state; | |
| 54 | |
| 55 { | |
| 56 boost::mutex::scoped_lock lock(that->oracleMutex_); | |
| 57 state = that->state_; | |
| 58 } | |
| 59 | |
| 60 if (state == State_Stopped) | |
| 61 { | |
| 62 break; | |
| 63 } | |
| 64 | |
| 65 std::auto_ptr<Orthanc::IDynamicObject> item(that->queue_.Dequeue(100)); | |
| 66 if (item.get() != NULL) | |
| 67 { | |
| 68 IOracleCommand& command = dynamic_cast<IOracleCommand&>(*item); | |
| 309 | 69 try |
| 70 { | |
| 71 command.Execute(); | |
| 72 } | |
| 73 catch (Orthanc::OrthancException& ex) | |
| 74 { | |
| 75 // this is probably a curl error that has been triggered. We may just ignore it. | |
| 76 // The command.success_ will stay at false and this will be handled in the command.Commit | |
| 77 } | |
| 80 | 78 |
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79 // Random sleeping to test |
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80 //boost::this_thread::sleep(boost::posix_time::milliseconds(50 * (1 + rand() % 10))); |
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81 |
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82 command.Commit(); |
| 80 | 83 } |
| 84 } | |
| 85 } | |
| 86 | |
| 87 public: | |
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88 PImpl(unsigned int threadCount) : |
| 80 | 89 state_(State_Init), |
| 90 threads_(threadCount) | |
| 91 { | |
| 92 } | |
| 93 | |
| 94 ~PImpl() | |
| 95 { | |
| 96 if (state_ == State_Started) | |
| 97 { | |
| 98 LOG(ERROR) << "You should have manually called Oracle::Stop()"; | |
| 99 Stop(); | |
| 100 } | |
| 101 } | |
| 102 | |
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103 Orthanc::SharedMessageQueue& GetQueue() |
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104 { |
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105 return queue_; |
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106 } |
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107 |
| 80 | 108 void Submit(IOracleCommand* command) |
| 109 { | |
| 110 std::auto_ptr<IOracleCommand> protection(command); | |
| 111 | |
| 112 if (command == NULL) | |
| 113 { | |
| 114 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 115 } | |
| 116 | |
| 117 boost::mutex::scoped_lock lock(oracleMutex_); | |
| 118 | |
| 119 switch (state_) | |
| 120 { | |
| 121 case State_Init: | |
| 122 case State_Started: | |
| 123 queue_.Enqueue(protection.release()); | |
| 124 break; | |
| 125 | |
| 126 case State_Stopped: | |
| 127 LOG(ERROR) << "Cannot schedule a request to the Oracle after having " | |
| 128 << "called Oracle::Stop()"; | |
| 129 break; | |
| 130 | |
| 131 default: | |
| 132 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 133 } | |
| 134 | |
| 135 } | |
| 136 | |
| 137 void Start() | |
| 138 { | |
| 139 boost::mutex::scoped_lock lock(oracleMutex_); | |
| 140 | |
| 141 if (state_ != State_Init) | |
| 142 { | |
| 143 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
| 144 } | |
| 145 | |
| 146 for (size_t i = 0; i < threads_.size(); i++) | |
| 147 { | |
| 148 threads_[i] = new boost::thread(Worker, this); | |
| 149 } | |
| 150 | |
| 151 state_ = State_Started; | |
| 152 } | |
| 153 | |
| 154 void Stop() | |
| 155 { | |
| 156 { | |
| 157 boost::mutex::scoped_lock lock(oracleMutex_); | |
| 158 | |
| 159 if (state_ != State_Started) | |
| 160 { | |
| 161 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
| 162 } | |
| 163 | |
| 164 state_ = State_Stopped; | |
| 165 } | |
| 166 | |
| 167 for (size_t i = 0; i < threads_.size(); i++) | |
| 168 { | |
| 169 if (threads_[i] != NULL) | |
| 170 { | |
| 171 if (threads_[i]->joinable()) | |
| 172 { | |
| 173 threads_[i]->join(); | |
| 174 } | |
| 175 | |
| 176 delete threads_[i]; | |
| 177 } | |
| 178 } | |
| 179 } | |
| 180 }; | |
| 181 | |
| 182 | |
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183 Oracle::Oracle(unsigned int threadCount) : |
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184 pimpl_(new PImpl(threadCount)) |
| 80 | 185 { |
| 186 } | |
| 187 | |
| 188 void Oracle::Start() | |
| 189 { | |
| 190 pimpl_->Start(); | |
| 191 } | |
| 192 | |
| 193 | |
| 194 void Oracle::Submit(IOracleCommand* command) | |
| 195 { | |
| 196 pimpl_->Submit(command); | |
| 197 } | |
| 198 | |
| 199 | |
| 200 void Oracle::Stop() | |
| 201 { | |
| 202 pimpl_->Stop(); | |
| 203 } | |
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204 |
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205 |
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206 void Oracle::WaitEmpty() |
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207 { |
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208 pimpl_->GetQueue().WaitEmpty(50); |
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209 } |
| 80 | 210 } |