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annotate Core/MultiThreading/ArrayFilledByThreads.cpp @ 479:0cd977e94479

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initial commit of the c++ client
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 16 Jul 2013 09:08:09 +0200
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children a811bdf8b8eb
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1 #include "ArrayFilledByThreads.h"
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2
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3 #include "../MultiThreading/ThreadedCommandProcessor.h"
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4 #include "../OrthancException.h"
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5
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6 namespace Orthanc
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7 {
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8 class ArrayFilledByThreads::Command : public ICommand
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9 {
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10 private:
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11 ArrayFilledByThreads& that_;
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12 size_t index_;
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13
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14 public:
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15 Command(ArrayFilledByThreads& that,
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16 size_t index) :
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17 that_(that),
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18 index_(index)
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19 {
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20 }
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21
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22 virtual bool Execute()
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23 {
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24 std::auto_ptr<IDynamicObject> obj(that_.filler_.GetFillerItem(index_));
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25 if (obj.get() == NULL)
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26 {
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27 return false;
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28 }
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29 else
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30 {
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31 boost::mutex::scoped_lock lock(that_.mutex_);
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32 that_.array_[index_] = obj.release();
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33 return true;
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34 }
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35 }
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36 };
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37
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38 void ArrayFilledByThreads::Clear()
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39 {
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40 for (size_t i = 0; i < array_.size(); i++)
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41 {
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42 if (array_[i])
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43 delete array_[i];
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44 }
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45
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46 array_.clear();
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47 filled_ = false;
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48 }
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49
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50 void ArrayFilledByThreads::Update()
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51 {
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52 if (!filled_)
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53 {
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54 array_.resize(filler_.GetFillerSize());
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55
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56 Orthanc::ThreadedCommandProcessor processor(threadCount_);
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57 for (size_t i = 0; i < array_.size(); i++)
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58 {
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59 processor.Post(new Command(*this, i));
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60 }
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61
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62 processor.Join();
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63 filled_ = true;
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64 }
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65 }
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66
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67
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68 ArrayFilledByThreads::ArrayFilledByThreads(IFiller& filler) : filler_(filler)
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69 {
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70 filled_ = false;
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71 threadCount_ = 4;
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72 }
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73
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74
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75 ArrayFilledByThreads::~ArrayFilledByThreads()
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76 {
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77 Clear();
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78 }
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79
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80
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81 void ArrayFilledByThreads::Reload()
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82 {
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83 Clear();
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84 Update();
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85 }
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86
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87
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88 void ArrayFilledByThreads::Invalidate()
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89 {
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90 Clear();
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91 }
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92
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93
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94 void ArrayFilledByThreads::SetThreadCount(unsigned int t)
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95 {
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96 if (t < 1)
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97 {
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98 throw OrthancException(ErrorCode_ParameterOutOfRange);
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99 }
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100
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101 threadCount_ = t;
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102 }
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103
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104
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105 size_t ArrayFilledByThreads::GetSize()
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106 {
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107 Update();
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108 return array_.size();
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109 }
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110
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111
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112 IDynamicObject& ArrayFilledByThreads::GetItem(size_t index)
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113 {
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114 if (index >= GetSize())
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115 {
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116 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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117 }
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118
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119 return *array_[index];
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120 }
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121 }