Mercurial > hg > orthanc

annotate Core/MultiThreading/ArrayFilledByThreads.cpp @ 1109:2e3bfa9a82b7

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fix mainline version
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 07 Aug 2014 13:54:16 +0200
parents a811bdf8b8eb
children 6e7e5ed91c2d
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege,
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4 * 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 #include "../PrecompiledHeaders.h"
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34 #include "ArrayFilledByThreads.h"
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35
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36 #include "../MultiThreading/ThreadedCommandProcessor.h"
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37 #include "../OrthancException.h"
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38
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39 namespace Orthanc
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40 {
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41 class ArrayFilledByThreads::Command : public ICommand
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42 {
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43 private:
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44 ArrayFilledByThreads& that_;
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45 size_t index_;
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46
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47 public:
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48 Command(ArrayFilledByThreads& that,
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49 size_t index) :
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50 that_(that),
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51 index_(index)
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52 {
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53 }
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54
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55 virtual bool Execute()
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56 {
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57 std::auto_ptr<IDynamicObject> obj(that_.filler_.GetFillerItem(index_));
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58 if (obj.get() == NULL)
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59 {
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60 return false;
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61 }
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62 else
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63 {
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64 boost::mutex::scoped_lock lock(that_.mutex_);
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65 that_.array_[index_] = obj.release();
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66 return true;
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67 }
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68 }
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69 };
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70
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71 void ArrayFilledByThreads::Clear()
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72 {
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73 for (size_t i = 0; i < array_.size(); i++)
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74 {
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75 if (array_[i])
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76 delete array_[i];
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77 }
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78
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79 array_.clear();
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80 filled_ = false;
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81 }
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82
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83 void ArrayFilledByThreads::Update()
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84 {
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85 if (!filled_)
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86 {
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87 array_.resize(filler_.GetFillerSize());
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88
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89 Orthanc::ThreadedCommandProcessor processor(threadCount_);
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90 for (size_t i = 0; i < array_.size(); i++)
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91 {
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92 processor.Post(new Command(*this, i));
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93 }
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94
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95 processor.Join();
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96 filled_ = true;
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97 }
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98 }
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99
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100
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101 ArrayFilledByThreads::ArrayFilledByThreads(IFiller& filler) : filler_(filler)
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102 {
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103 filled_ = false;
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104 threadCount_ = 4;
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105 }
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106
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107
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108 ArrayFilledByThreads::~ArrayFilledByThreads()
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109 {
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110 Clear();
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111 }
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112
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113
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114 void ArrayFilledByThreads::Reload()
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115 {
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116 Clear();
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117 Update();
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118 }
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119
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120
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121 void ArrayFilledByThreads::Invalidate()
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122 {
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123 Clear();
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124 }
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125
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126
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127 void ArrayFilledByThreads::SetThreadCount(unsigned int t)
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128 {
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129 if (t < 1)
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130 {
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131 throw OrthancException(ErrorCode_ParameterOutOfRange);
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132 }
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133
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134 threadCount_ = t;
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135 }
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136
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137
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138 size_t ArrayFilledByThreads::GetSize()
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139 {
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140 Update();
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141 return array_.size();
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142 }
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143
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144
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145 IDynamicObject& ArrayFilledByThreads::GetItem(size_t index)
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146 {
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147 if (index >= GetSize())
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148 {
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149 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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150 }
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151
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152 return *array_[index];
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153 }
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154 }