Mercurial > hg > orthanc-stone

annotate OrthancStone/Sources/Loaders/GenericLoadersContext.cpp @ 1652:fa9e6bf84958

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integrating pdf.js into Stone Web viewer
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 16 Nov 2020 20:47:53 +0100
parents 8563ea5d8ae4
children 9ac2a65d4172
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
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6 *
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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.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Lesser General Public License for more details.
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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/>.
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20 **/
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21
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22
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23 #include "GenericLoadersContext.h"
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24
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25 namespace OrthancStone
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26 {
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27 class GenericLoadersContext::Locker : public ILoadersContext::ILock
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28 {
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29 private:
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30 GenericLoadersContext& that_;
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31 boost::recursive_mutex::scoped_lock lock_;
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32
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33 public:
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34 explicit Locker(GenericLoadersContext& that) :
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35 that_(that),
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36 lock_(that.mutex_)
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37 {
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38 if (!that_.scheduler_)
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39 {
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40 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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41 }
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42 }
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43
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44 virtual ILoadersContext& GetContext() const ORTHANC_OVERRIDE
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45 {
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46 return that_;
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47 };
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48
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49 virtual void AddLoader(boost::shared_ptr<IObserver> loader) ORTHANC_OVERRIDE
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50 {
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51 that_.loaders_.push_back(loader);
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52 }
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53
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54 virtual IObservable& GetOracleObservable() const ORTHANC_OVERRIDE
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55 {
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56 return that_.oracleObservable_;
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57 }
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58
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59 virtual void Schedule(boost::shared_ptr<IObserver> receiver,
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60 int priority,
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61 IOracleCommand* command /* Takes ownership */) ORTHANC_OVERRIDE
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62 {
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63 that_.scheduler_->Schedule(receiver, priority, command);
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64 };
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65
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66 virtual void CancelRequests(boost::shared_ptr<IObserver> receiver) ORTHANC_OVERRIDE
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67 {
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68 that_.scheduler_->CancelRequests(receiver);
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69 }
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70
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71 virtual void CancelAllRequests() ORTHANC_OVERRIDE
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72 {
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73 that_.scheduler_->CancelAllRequests();
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74 }
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75
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76 virtual void GetStatistics(uint64_t& scheduledCommands,
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77 uint64_t& processedCommands) ORTHANC_OVERRIDE
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78 {
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79 scheduledCommands = that_.scheduler_->GetTotalScheduled();
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80 processedCommands = that_.scheduler_->GetTotalProcessed();
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81 }
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82 };
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83
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84
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85 void GenericLoadersContext::EmitMessage(boost::weak_ptr<IObserver> observer,
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86 const IMessage& message)
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87 {
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88 boost::recursive_mutex::scoped_lock lock(mutex_);
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89 //LOG(INFO) << " inside emit lock: " << message.GetIdentifier().AsString();
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90 oracleObservable_.EmitMessage(observer, message);
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91 //LOG(INFO) << " outside emit lock";
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92 }
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93
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94
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95 GenericLoadersContext::GenericLoadersContext(unsigned int maxHighPriority,
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96 unsigned int maxStandardPriority,
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97 unsigned int maxLowPriority)
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98 {
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99 oracle_.reset(new ThreadedOracle(*this));
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100 scheduler_ = OracleScheduler::Create(*oracle_, oracleObservable_, *this,
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101 maxHighPriority, maxStandardPriority, maxLowPriority);
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102
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103 if (!scheduler_)
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104 {
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105 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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106 }
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107 }
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108
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109
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110 GenericLoadersContext::~GenericLoadersContext()
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111 {
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112 LOG(INFO) << "scheduled commands: " << scheduler_->GetTotalScheduled()
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113 << ", processed commands: " << scheduler_->GetTotalProcessed();
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114 scheduler_.reset();
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115 //LOG(INFO) << "counter: " << scheduler_.use_count();
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116 }
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117
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118
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119 void GenericLoadersContext::SetOrthancParameters(const Orthanc::WebServiceParameters& parameters)
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120 {
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121 boost::recursive_mutex::scoped_lock lock(mutex_);
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122 oracle_->SetOrthancParameters(parameters);
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123 }
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124
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125
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126 void GenericLoadersContext::SetRootDirectory(const std::string& root)
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127 {
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128 boost::recursive_mutex::scoped_lock lock(mutex_);
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129 oracle_->SetRootDirectory(root);
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130 }
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131
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132
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133 void GenericLoadersContext::SetDicomCacheSize(size_t size)
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134 {
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135 boost::recursive_mutex::scoped_lock lock(mutex_);
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136 oracle_->SetDicomCacheSize(size);
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137 }
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138
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139
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140 void GenericLoadersContext::StartOracle()
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141 {
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142 boost::recursive_mutex::scoped_lock lock(mutex_);
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143 oracle_->Start();
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144 //LOG(INFO) << "STARTED ORACLE";
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145 }
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146
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147
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148 void GenericLoadersContext::StopOracle()
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149 {
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150 /**
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151 * DON'T lock "mutex_" here, otherwise Stone won't be able to
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152 * stop if one command being executed by the oracle has to emit
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153 * a message (method "EmitMessage()" would have to lock the
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154 * mutex too).
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155 **/
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156
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157 //LOG(INFO) << "STOPPING ORACLE";
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158 oracle_->Stop();
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159 //LOG(INFO) << "STOPPED ORACLE";
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160 }
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161
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162
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163 void GenericLoadersContext::WaitUntilComplete()
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164 {
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165 for (;;)
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166 {
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167 {
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168 boost::recursive_mutex::scoped_lock lock(mutex_);
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169 if (scheduler_ &&
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170 scheduler_->GetTotalScheduled() == scheduler_->GetTotalProcessed())
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171 {
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172 return;
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173 }
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174 }
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175
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176 boost::this_thread::sleep(boost::posix_time::milliseconds(100));
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177 }
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178 }
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179
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180 ILoadersContext::ILock* GenericLoadersContext::Lock()
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181 {
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182 return new Locker(*this);
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183 }
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184 }