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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 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License, or (at your option) any later version.
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10 *
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11 * In addition, as a special exception, the copyright holders of this
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12 * program give permission to link the code of its release with the
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13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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14 * that use the same license as the "OpenSSL" library), and distribute
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15 * the linked executables. You must obey the GNU General Public License
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16 * in all respects for all of the code used other than "OpenSSL". If you
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17 * modify file(s) with this exception, you may extend this exception to
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18 * your version of the file(s), but you are not obligated to do so. If
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19 * you do not wish to do so, delete this exception statement from your
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20 * version. If you delete this exception statement from all source files
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21 * in the program, then also delete it here.
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22 *
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23 * This program is distributed in the hope that it will be useful, but
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24 * WITHOUT ANY WARRANTY; without even the implied warranty of
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25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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26 * General Public License for more details.
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27 *
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28 * You should have received a copy of the GNU General Public License
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29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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30 **/
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31
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32
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33 #pragma once
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34
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35 #include "BagOfTasks.h"
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36 #include "SharedMessageQueue.h"
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37
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38 #include <stdint.h>
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39 #include <map>
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40
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41 namespace Orthanc
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42 {
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43 class BagOfTasksProcessor : public boost::noncopyable
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44 {
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45 private:
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46 enum BagStatus
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47 {
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48 BagStatus_Running,
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49 BagStatus_Canceled,
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50 BagStatus_Failed
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51 };
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52
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53
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54 struct Bag
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55 {
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56 size_t size_;
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57 size_t done_;
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58 BagStatus status_;
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59
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60 Bag() :
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61 size_(0),
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62 done_(0),
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63 status_(BagStatus_Failed)
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64 {
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65 }
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66
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67 Bag(size_t size) :
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68 size_(size),
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69 done_(0),
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70 status_(BagStatus_Running)
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71 {
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72 }
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73 };
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74
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75 class Task;
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76
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77
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78 typedef std::map<uint64_t, Bag> Bags;
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79 typedef std::map<uint64_t, bool> ExitStatus;
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80
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81 SharedMessageQueue queue_;
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82
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83 boost::mutex mutex_;
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84 uint64_t countBags_;
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85 Bags bags_;
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86 std::vector<boost::thread*> threads_;
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87 ExitStatus exitStatus_;
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88 bool continue_;
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89
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90 boost::condition_variable bagFinished_;
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91
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92 static void Worker(BagOfTasksProcessor* that);
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93
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94 void Cancel(int64_t bag);
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95
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96 bool Join(int64_t bag);
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97
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98 float GetProgress(int64_t bag);
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99
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100 public:
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101 class Handle : public boost::noncopyable
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102 {
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103 friend class BagOfTasksProcessor;
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104
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105 private:
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106 BagOfTasksProcessor& that_;
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107 uint64_t bag_;
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108 bool hasJoined_;
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109 bool status_;
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110
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111 Handle(BagOfTasksProcessor& that,
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112 uint64_t bag) :
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113 that_(that),
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114 bag_(bag),
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115 hasJoined_(false)
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116 {
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117 }
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118
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119 public:
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120 ~Handle()
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121 {
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122 Join();
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123 }
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124
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125 void Cancel()
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126 {
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127 that_.Cancel(bag_);
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128 }
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129
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130 bool Join();
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131
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132 float GetProgress()
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133 {
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134 return that_.GetProgress(bag_);
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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 BagOfTasksProcessor(size_t countThreads);
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140
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141 ~BagOfTasksProcessor();
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142
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143 Handle* Submit(BagOfTasks& tasks);
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144 };
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145 }
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