annotate Core/JobsEngine/JobsEngine.cpp @ 2569:2af17cd5eb1f jobs

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 07 May 2018 15:37:20 +0200
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children 2e879c796ec7
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2569
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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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) 2017-2018 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 General Public License as
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9 * published by the Free Software Foundation, either version 3 of the
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10 * License, or (at your option) any later version.
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11 *
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12 * In addition, as a special exception, the copyright holders of this
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13 * program give permission to link the code of its release with the
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14 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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15 * that use the same license as the "OpenSSL" library), and distribute
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16 * the linked executables. You must obey the GNU General Public License
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17 * in all respects for all of the code used other than "OpenSSL". If you
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18 * modify file(s) with this exception, you may extend this exception to
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19 * your version of the file(s), but you are not obligated to do so. If
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20 * you do not wish to do so, delete this exception statement from your
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21 * version. If you delete this exception statement from all source files
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22 * in the program, then also delete it here.
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23 *
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24 * This program is distributed in the hope that it will be useful, but
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25 * WITHOUT ANY WARRANTY; without even the implied warranty of
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26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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27 * General Public License for more details.
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28 *
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29 * You should have received a copy of the GNU General Public License
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30 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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31 **/
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32
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33
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34 #include "../PrecompiledHeaders.h"
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35 #include "JobsEngine.h"
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36
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37 #include "JobStepRetry.h"
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38
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39 #include "../Logging.h"
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40 #include "../OrthancException.h"
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41
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42 namespace Orthanc
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43 {
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44 bool JobsEngine::ExecuteStep(JobsRegistry::RunningJob& running,
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45 size_t workerIndex)
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46 {
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47 assert(running.IsValid());
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48
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49 LOG(INFO) << "Executing job with priority " << running.GetPriority()
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50 << " in worker thread " << workerIndex << ": " << running.GetId();
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51
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52 if (running.IsPauseScheduled())
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53 {
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54 running.GetJob().ReleaseResources();
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55 running.MarkPause();
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56 return false;
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57 }
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58
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59 std::auto_ptr<JobStepResult> result;
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60
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61 {
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62 try
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63 {
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64 result.reset(running.GetJob().ExecuteStep());
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65
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66 if (result->GetCode() == JobStepCode_Failure)
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67 {
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68 running.UpdateStatus(ErrorCode_InternalError);
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69 }
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70 else
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71 {
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72 running.UpdateStatus(ErrorCode_Success);
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73 }
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74 }
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75 catch (OrthancException& e)
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76 {
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77 running.UpdateStatus(e.GetErrorCode());
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78 }
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79 catch (boost::bad_lexical_cast&)
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80 {
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81 running.UpdateStatus(ErrorCode_BadFileFormat);
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82 }
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83 catch (...)
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84 {
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85 running.UpdateStatus(ErrorCode_InternalError);
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86 }
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87
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88 if (result.get() == NULL)
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89 {
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90 result.reset(new JobStepResult(JobStepCode_Failure));
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91 }
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92 }
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93
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94 switch (result->GetCode())
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95 {
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96 case JobStepCode_Success:
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97 running.MarkSuccess();
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98 return false;
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99
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100 case JobStepCode_Failure:
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101 running.MarkFailure();
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102 return false;
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103
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104 case JobStepCode_Retry:
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105 running.MarkRetry(dynamic_cast<JobStepRetry&>(*result).GetTimeout());
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106 return false;
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107
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108 case JobStepCode_Continue:
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109 return true;
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110
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111 default:
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112 throw OrthancException(ErrorCode_InternalError);
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113 }
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114 }
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115
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116
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117 void JobsEngine::RetryHandler(JobsEngine* engine)
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118 {
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119 assert(engine != NULL);
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120
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121 for (;;)
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122 {
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123 boost::this_thread::sleep(boost::posix_time::milliseconds(200));
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124
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125 {
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126 boost::mutex::scoped_lock lock(engine->stateMutex_);
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127
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128 if (engine->state_ != State_Running)
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129 {
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130 return;
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131 }
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132 }
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133
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134 engine->GetRegistry().ScheduleRetries();
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135 }
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136 }
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137
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138
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139 void JobsEngine::Worker(JobsEngine* engine,
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140 size_t workerIndex)
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141 {
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142 assert(engine != NULL);
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143
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144 LOG(INFO) << "Worker thread " << workerIndex << " has started";
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145
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146 for (;;)
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147 {
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148 {
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149 boost::mutex::scoped_lock lock(engine->stateMutex_);
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150
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151 if (engine->state_ != State_Running)
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152 {
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153 return;
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154 }
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155 }
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156
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157 JobsRegistry::RunningJob running(engine->GetRegistry(), 100);
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158
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159 if (running.IsValid())
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160 {
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161 for (;;)
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162 {
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163 if (!engine->ExecuteStep(running, workerIndex))
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164 {
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165 break;
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166 }
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167 }
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168 }
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169 }
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170 }
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171
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172
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173 JobsEngine::JobsEngine() :
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174 state_(State_Setup),
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175 workers_(1)
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176 {
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177 }
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178
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179
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180 JobsEngine::~JobsEngine()
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181 {
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182 if (state_ != State_Setup &&
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183 state_ != State_Done)
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184 {
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185 LOG(ERROR) << "INTERNAL ERROR: JobsEngine::Stop() should be invoked manually to avoid mess in the destruction order!";
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186 Stop();
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187 }
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188 }
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189
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190
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191 void JobsEngine::SetWorkersCount(size_t count)
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192 {
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193 if (count == 0)
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194 {
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195 throw OrthancException(ErrorCode_ParameterOutOfRange);
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196 }
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197
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198 boost::mutex::scoped_lock lock(stateMutex_);
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199
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200 if (state_ != State_Setup)
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201 {
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202 // Can only be invoked before calling "Start()"
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203 throw OrthancException(ErrorCode_BadSequenceOfCalls);
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204 }
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205
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206 workers_.resize(count);
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207 }
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parents:
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208
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209
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210 void JobsEngine::Start()
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211 {
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212 boost::mutex::scoped_lock lock(stateMutex_);
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213
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214 if (state_ != State_Setup)
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215 {
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216 throw OrthancException(ErrorCode_BadSequenceOfCalls);
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217 }
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218
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219 retryHandler_ = boost::thread(RetryHandler, this);
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220
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221 for (size_t i = 0; i < workers_.size(); i++)
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222 {
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223 workers_[i] = boost::thread(Worker, this, i);
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parents:
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224 }
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225
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226 state_ = State_Running;
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227
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228 LOG(WARNING) << "The jobs engine has started";
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229 }
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parents:
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230
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231
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232 void JobsEngine::Stop()
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233 {
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parents:
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234 {
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235 boost::mutex::scoped_lock lock(stateMutex_);
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parents:
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236
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237 if (state_ != State_Running)
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238 {
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parents:
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239 return;
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parents:
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240 }
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parents:
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241
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242 state_ = State_Stopping;
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parents:
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243 }
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parents:
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244
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245 LOG(INFO) << "Stopping the jobs engine";
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parents:
diff changeset
246
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247 if (retryHandler_.joinable())
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parents:
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248 {
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249 retryHandler_.join();
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250 }
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parents:
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251
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252 for (size_t i = 0; i < workers_.size(); i++)
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parents:
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253 {
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parents:
diff changeset
254 if (workers_[i].joinable())
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parents:
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255 {
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diff changeset
256 workers_[i].join();
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parents:
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257 }
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parents:
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258 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
259
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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260 {
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parents:
diff changeset
261 boost::mutex::scoped_lock lock(stateMutex_);
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parents:
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262 state_ = State_Done;
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parents:
diff changeset
263 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
264
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parents:
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265 LOG(WARNING) << "The jobs engine has stopped";
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
266 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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267 }