annotate OrthancFramework/Resources/Graveyard/Multithreading/BagOfTasksProcessor.cpp @ 4342:52166629239f

SystemToolbox::ReadFileRange()
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 03 Dec 2020 18:48:06 +0100
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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) 2017-2020 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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23 #include "../PrecompiledHeaders.h"
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24 #include "BagOfTasksProcessor.h"
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25
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26 #include "../Logging.h"
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27 #include "../OrthancException.h"
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28
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29 #include <stdio.h>
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30
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31 namespace Orthanc
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32 {
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33 class BagOfTasksProcessor::Task : public IDynamicObject
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34 {
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35 private:
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36 uint64_t bag_;
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37 std::auto_ptr<ICommand> command_;
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38
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39 public:
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40 Task(uint64_t bag,
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41 ICommand* command) :
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42 bag_(bag),
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43 command_(command)
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44 {
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45 }
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46
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47 bool Execute()
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48 {
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49 try
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50 {
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51 return command_->Execute();
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52 }
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53 catch (OrthancException& e)
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54 {
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55 LOG(ERROR) << "Exception while processing a bag of tasks: " << e.What();
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56 return false;
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57 }
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58 catch (std::runtime_error& e)
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59 {
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60 LOG(ERROR) << "Runtime exception while processing a bag of tasks: " << e.what();
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61 return false;
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62 }
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63 catch (...)
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64 {
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65 LOG(ERROR) << "Native exception while processing a bag of tasks";
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66 return false;
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67 }
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68 }
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69
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70 uint64_t GetBag()
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71 {
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72 return bag_;
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73 }
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74 };
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76
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77 void BagOfTasksProcessor::SignalProgress(Task& task,
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78 Bag& bag)
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79 {
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80 assert(bag.done_ < bag.size_);
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81
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82 bag.done_ += 1;
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83
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84 if (bag.done_ == bag.size_)
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85 {
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86 exitStatus_[task.GetBag()] = (bag.status_ == BagStatus_Running);
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87 bagFinished_.notify_all();
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88 }
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89 }
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90
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91 void BagOfTasksProcessor::Worker(BagOfTasksProcessor* that)
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92 {
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93 while (that->continue_)
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94 {
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95 std::auto_ptr<IDynamicObject> obj(that->queue_.Dequeue(100));
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96 if (obj.get() != NULL)
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97 {
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98 Task& task = *dynamic_cast<Task*>(obj.get());
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99
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100 {
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101 boost::mutex::scoped_lock lock(that->mutex_);
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102
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103 Bags::iterator bag = that->bags_.find(task.GetBag());
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104 assert(bag != that->bags_.end());
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105 assert(bag->second.done_ < bag->second.size_);
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106
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107 if (bag->second.status_ != BagStatus_Running)
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108 {
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109 // Do not execute this task, as its parent bag of tasks
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110 // has failed or is tagged as canceled
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111 that->SignalProgress(task, bag->second);
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112 continue;
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113 }
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114 }
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115
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116 bool success = task.Execute();
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117
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118 {
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119 boost::mutex::scoped_lock lock(that->mutex_);
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120
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121 Bags::iterator bag = that->bags_.find(task.GetBag());
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122 assert(bag != that->bags_.end());
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123
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124 if (!success)
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125 {
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126 bag->second.status_ = BagStatus_Failed;
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127 }
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128
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129 that->SignalProgress(task, bag->second);
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130 }
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131 }
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132 }
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133 }
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134
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135
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136 void BagOfTasksProcessor::Cancel(int64_t bag)
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137 {
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138 boost::mutex::scoped_lock lock(mutex_);
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139
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140 Bags::iterator it = bags_.find(bag);
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141 if (it != bags_.end())
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142 {
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143 it->second.status_ = BagStatus_Canceled;
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144 }
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145 }
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146
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
147
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
148 bool BagOfTasksProcessor::Join(int64_t bag)
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149 {
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
150 boost::mutex::scoped_lock lock(mutex_);
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Sebastien Jodogne <s.jodogne@gmail.com>
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151
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
152 while (continue_)
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
153 {
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
154 ExitStatus::iterator it = exitStatus_.find(bag);
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
155 if (it == exitStatus_.end()) // The bag is still running
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
156 {
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
157 bagFinished_.wait(lock);
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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158 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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159 else
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
160 {
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
161 bool status = it->second;
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Sebastien Jodogne <s.jodogne@gmail.com>
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162 exitStatus_.erase(it);
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163 return status;
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
164 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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165 }
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
166
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Sebastien Jodogne <s.jodogne@gmail.com>
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167 return false; // The processor is stopping
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168 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
169
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
170
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
171 float BagOfTasksProcessor::GetProgress(int64_t bag)
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Sebastien Jodogne <s.jodogne@gmail.com>
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172 {
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diff changeset
173 boost::mutex::scoped_lock lock(mutex_);
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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174
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175 Bags::const_iterator it = bags_.find(bag);
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176 if (it == bags_.end())
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177 {
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Sebastien Jodogne <s.jodogne@gmail.com>
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178 // The bag of tasks has finished
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179 return 1.0f;
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180 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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181 else
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Sebastien Jodogne <s.jodogne@gmail.com>
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182 {
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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183 return (static_cast<float>(it->second.done_) /
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Sebastien Jodogne <s.jodogne@gmail.com>
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184 static_cast<float>(it->second.size_));
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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185 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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186 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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187
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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188
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Sebastien Jodogne <s.jodogne@gmail.com>
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189 bool BagOfTasksProcessor::Handle::Join()
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Sebastien Jodogne <s.jodogne@gmail.com>
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190 {
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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191 if (hasJoined_)
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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192 {
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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193 return status_;
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
194 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
195 else
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
196 {
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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197 status_ = that_.Join(bag_);
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
198 hasJoined_ = true;
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199 return status_;
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
200 }
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
201 }
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
202
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
203
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
204 BagOfTasksProcessor::BagOfTasksProcessor(size_t countThreads) :
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parents:
diff changeset
205 countBags_(0),
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parents:
diff changeset
206 continue_(true)
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
207 {
2016
0ae26237569a cppcheck
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1923
diff changeset
208 if (countThreads == 0)
1920
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
209 {
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
210 throw OrthancException(ErrorCode_ParameterOutOfRange);
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
211 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
212
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
213 threads_.resize(countThreads);
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
214
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
215 for (size_t i = 0; i < threads_.size(); i++)
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
216 {
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
217 threads_[i] = new boost::thread(Worker, this);
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
218 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
219 }
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
220
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
221
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
222 BagOfTasksProcessor::~BagOfTasksProcessor()
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
223 {
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
224 continue_ = false;
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
225
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
226 bagFinished_.notify_all(); // Wakes up all the pending "Join()"
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
227
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
228 for (size_t i = 0; i < threads_.size(); i++)
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
229 {
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
230 if (threads_[i])
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
231 {
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
232 if (threads_[i]->joinable())
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
233 {
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
234 threads_[i]->join();
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
235 }
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
236
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
237 delete threads_[i];
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
238 threads_[i] = NULL;
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
239 }
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
240 }
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
241 }
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
242
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
243
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
244 BagOfTasksProcessor::Handle* BagOfTasksProcessor::Submit(BagOfTasks& tasks)
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
245 {
1923
6ac7f31fc543 fix freeze if empty bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1920
diff changeset
246 if (tasks.GetSize() == 0)
6ac7f31fc543 fix freeze if empty bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1920
diff changeset
247 {
6ac7f31fc543 fix freeze if empty bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1920
diff changeset
248 return new Handle(*this, 0, true);
6ac7f31fc543 fix freeze if empty bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1920
diff changeset
249 }
6ac7f31fc543 fix freeze if empty bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1920
diff changeset
250
1920
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
251 boost::mutex::scoped_lock lock(mutex_);
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
252
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
253 uint64_t id = countBags_;
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
254 countBags_ += 1;
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
255
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
256 Bag bag(tasks.GetSize());
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
257 bags_[id] = bag;
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
258
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
259 while (!tasks.IsEmpty())
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
260 {
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
261 queue_.Enqueue(new Task(id, tasks.Pop()));
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
262 }
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
263
1923
6ac7f31fc543 fix freeze if empty bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1920
diff changeset
264 return new Handle(*this, id, false);
1920
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
265 }
b97aa579e85b bag of tasks
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
266 }