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update chapter Christie example
author riono <e165729@ie.u-ryukyu.ac.jp>
date Tue, 04 May 2021 23:41:09 +0900
parents 73a3c53c7568
children c65256380a80
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1 %%
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2 %% 研究報告用スイッチ
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3 %% [techrep]
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4 %%
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5 %% 欧文表記無しのスイッチ(etitle,eabstractは任意)
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6 %% [noauthor]
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7 %%
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9 %\documentclass[submit,techrep]{ipsj}
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10 \documentclass[submit,techrep,noauthor]{ipsj}
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14 \usepackage[dvips]{graphicx}
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15 \usepackage{latexsym}
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16 \usepackage{url}
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17 \usepackage{listings}
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18 \usepackage{caption}
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19
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20 \def\Underline{\setbox0\hbox\bgroup\let\\\endUnderline}
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21 \def\endUnderline{\vphantom{y}\egroup\smash{\underline{\box0}}\\}
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22 \def\|{\verb|}
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23 %
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25 %\setcounter{巻数}{59}%vol59=2018
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26 %\setcounter{号数}{10}
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27 %\setcounter{page}{1}
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29 \lstset{
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30 language=java,
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31 tabsize=2,
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32 numbers=left,
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33 frame=single,
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34 basicstyle={\ttfamily\footnotesize}, %
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35 identifierstyle={\footnotesize}, %
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36 commentstyle={\footnotesize\itshape}, %
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37 keywordstyle={\footnotesize\bfseries}, %
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38 ndkeywordstyle={\footnotesize}, %
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39 stringstyle={\footnotesize\ttfamily},
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40 breaklines=true,
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41 captionpos=t,
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42 columns=[l]{fullflexible}, %
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43 xrightmargin=0zw, %
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44 xleftmargin=1zw, %
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45 aboveskip=1zw,
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46 numberstyle={\scriptsize}, %
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47 stepnumber=1,
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48 numbersep=0.5zw, %
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49 lineskip=-0.5ex,
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50 }
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51
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52 \renewcommand{\lstlistingname}{Code}
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53
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54 \begin{document}
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55
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56
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57 \title{継続を使用する並列分散フレームワークのUnity実装}
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58
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59 %\etitle{How to Prepare Your Paper for IPSJ SIG Technical Report \\ (version 2018/10/29)}
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60
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61
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62 \affiliate{KIE}{琉球大学大学院理工学研究科情報工学専攻}
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63 \affiliate{IE}{琉球大学工学部工学科知能情報コース}
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64
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65 \author{安田 亮}{Ryo Yasuda}{KIE}[riono210@cr.ie.u-ryukyu.ac.jp]
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66 \author{河野 真治}{Shinji Kono}{IE}[kono@ie.u-ryukyu.ac.jp]
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67
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68 \begin{abstract}
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69 FPSやMMORPGなどのゲームにおける通信方式には、クライアントサーバ方式とp2p方式の2つが考えられる。しかし、クライアントの負荷軽減やチート対策などを理由にクライアントサーバ方式が主流である。データの同期にはサーバを経由するため低速である。
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70 そこで本研究室で開発している分散フレームワークChristieを用いることで、高速かつ、安全に、データの同期を行いたいと考えた。
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71 本研究ではChrisiteをゲームエンジンUnityに対応するため、C\#への書き換えを行う。
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72 \end{abstract}
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73
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74
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75 %
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76 %\begin{jkeyword}
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77 %情報処理学会論文誌ジャーナル，\LaTeX，スタイルファイル，べからず集
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78 %\end{jkeyword}
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79 %
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80 %\begin{eabstract}
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81 %This document is a guide to prepare a draft for submitting to IPSJ
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82 %Journal, and the final camera-ready manuscript of a paper to appear in
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83 %IPSJ Journal, using {\LaTeX} and special style files. Since this
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84 %document itself is produced with the style files, it will help you to
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85 %refer its source file which is distributed with the style files.
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86 %\end{eabstract}
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87 %
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88 %\begin{ekeyword}
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89 %IPSJ Journal, \LaTeX, style files, ``Dos and Dont's'' list
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90 %\end{ekeyword}
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91
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92 \maketitle
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93
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94
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95 \section{オンラインゲームにおけるデータ通信}
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96
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97
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98
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99 \section{Chrisite のC\#への書き換えについて}
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100 Chrisite はAlice というプロジェクトで開発が行われていた。しかしAlice には様々な問題点があった。
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101
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102
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103
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104
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105
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106 \section{Christieの基礎概念}
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107 Chrisiteは当研究室で開発している分散通信フレームワークである。同じく当研究室で開発している GearsOSのファイルシステムに組み込まれる予定があるため、GearsOSを構成する言語 Continuation based Cと似た概念を持っている。 Chrisiteに存在する概念として以下のようなものがある。
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108
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109 \begin{itemize} %箇条書き
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110 \item CodeGear
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111 \item DataGear
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112 \item CodeGearManager
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113 \item DataGearManager
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114 \end{itemize}
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115
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116 以下はjava版のChrisiteについて解説を行う。
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117 CodeGearはクラスやスレッドに相当する。
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118 DataGearは変数データに相当し、CodeGear内でannotationを用いて変数データを取得する。CodeGear内に記述した全てのDataGearの中にデータが格納された際に、初めてそのCodeGearが実行されるという仕組みになっている。
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119 CodeGearManagerはノードであり、CodeGear、DataGear、DataGearManagerを管理する。
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120 DataGearManagerはDataGearを管理するものであり、putという操作により変数データ、つまりDataGearを格納できる。DataGearManagerのput操作を行う際にはLocalとRemoteのどちらかを選び、変数のkeyとデータを引数として渡す。
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121 Localであれば、LocalのCodeGearManagerが管理しているDataGearManagerに対しDataGearを格納していく。Remoteであれば、接続したRemote先のCodeGearManagerが管理しているDataGearManagerにDataGearを格納できる。
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122 put操作を行った後は、対象のDataGearManagerの中にqueueとして保管される。DataGearを取り出す際には、CodeGearm内で宣言した変数データにannotationをつける。DataGearのannotationにはTake、Peek、TakeFrom、PeekFromの4つがある。
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123
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124
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125 \begin{description}
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126 \item[Take] 先頭のDataGear を読み込み、そのDataGear を削除する。DataGearが複数ある場合、この動作を用いる
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127 \item[Peek] 先頭のDataGear を読み込むが、DataGear が削除されない。そのため、特に操作をしない場合は同じデータを参照し続ける。
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128 \item[TakeFrom (Remote DGM name)] Take と似ているが、Remote DGM nameを指定することで、その接続先(Remote) のDataGearManager からTake 操作を行える。
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129 \item[PeekFrom (Remote DGM name)] Peek と似ているが、Remote DGM name を指定することで、その接続先(Remote) のDataGearManager からPeek 操作を行える。
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130 \end{description}
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131
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132 \section{プログラムの例}
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133 Code \ref{code:javaSHW} 、Code \ref{code:javaHWC} 、Code \ref{code:javaFHW} はChrisite の機能を使用してhello world を出力する例題である。
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134
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135 \lstinputlisting[caption=StartHelloWorld, label=code:javaSHW]{src/StartHelloWorld.java}
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136 \lstinputlisting[caption=HelloWorldCodeGear, label=code:javaHWC]{src/HelloWorldCodeGear.java}
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137 \lstinputlisting[caption=FinishHelloWorld, label=code:javaFHW]{src/FinishHelloWorld.java}
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138
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139 Code \ref{code:javaSHW} ではCodeGearManager を作り、setup(new CodeGear) を行うことで各CodeGear に記述されたDataGear の待ち合わせを行う。全てのDataGear が揃った場合にCodeGear が実行される。CodeGearaManager の作成方法はStartCodeGear を継承したものから、createCGM(port) を実行することにより、CodeGearManager が作成できる。
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140
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141 Code \ref{code:javaSHW} の11、12行目はput(key, data) を行うことでDataGearManager のqueue にデータを格納することができる。key はstring 型のみで格納したい変数名を指定する。11、12行目のput ではCode \ref{code:javaHWC} のフィールド変数helloWorld を指定し、データは"hello" と"world" を逐次的に格納している。
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142
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143 Code \ref{code:javaHWC} 、Code \ref{code:javaFHW} がCodeGearにあたる。それぞれのフィールド変数には@Take annotation が付いており、DataGearManager に格納されたkey を参照してデータを取得する。その後DataGearManger に格納されたデータは破棄される。
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144
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145 Code \ref{code:javaHWC} では最初にフィールド変数 helloWorld にstring 型の"hellow"を取得、print を行い、再びkey hello、data "hello" をDataGearManager にput している。また8行目で自らをsetpuしているため、再帰的にHelloWorldCodeGear が再実行される。2回目の実行ではフィールド変数 helloWorld に"world" が格納と出力がされ、key world、data "world" がDataGearManager に格納される。Code \ref{code:javaHWC} でput した"hello" と"world" は最終的に、Code \ref{code:javaFHW} の同名のフィールド変数に格納される。
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146 2回目の実行でもsetup しているが、DataGearManagerにはkey helloWorld のデータが無いため、3回目以降は実行されない。
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147
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148 Code \ref{code:javaHWC} の2回の実行後、Code \ref{code:javaHWC} のローカル変数hello とworld が全て揃ったことによりCode \ref{code:javaHWC} が実行されプログラムは終了する。
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149
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150
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151 \section{Unity}
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152
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153
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154
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155 \section{C\# でのChristie}
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156
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157 Code \ref{code:javaSHW} 、Code \ref{code:javaHWC} 、Code \ref{code:javaFHW} がC\#ではこうなります
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158
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159 \lstinputlisting[caption=C\# StartHelloWorld, label=code:csSHW]{src/StartHelloWorld.cs}
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160
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161
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162
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163 \section{Unityでの動作}
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164
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165
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166
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167
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168 \section{annotation の書き換え}
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169 java 版ではDataGear を取得する際に、annotation という java の機能を用いて行った。C\#には annotation はなく、代わりにattribute を利用して DataGear の取得を行っている。
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170 以下のCode \ref{code:javaTake}、Code \ref{code:csTake}はjava とC\# におけるTakeの実装である。
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171
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172 \lstinputlisting[caption=java における Take annotation, label=code:javaTake]{src/Take.java}
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173
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174 \lstinputlisting[caption=C\# における Take attribute, label=code:csTake]{src/Take.cs}
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175
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176 java でannotation を自作する際には、 @interfacs で宣言する。また、Code \ref{code:javaTake} の8行目ではannotation情報をどの段階まで保持するかを指定しており、Take の場合 JVMによって保存され、ランタイム環境で使用できる。9行目ではannotationの適用可能箇所を指定しており、フィールド変数に対して適応可能となっている。
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177
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178 C\# でattribute を作成する際には、 System.Attributeを継承する必要がある。attribute の適用可能箇所については、Code \ref{code:csTake} の4行目でフィールド変数を指定している。
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179
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180 \section{MessagePackの相違点}
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181 Christie ではデータを送信する際に、MessagePack を使用してデータを圧縮し、送信している。java 版で使用しているMessagePack はバージョンが古く現在はサポートされてない。そのためMessagePack の最新版とは記述方法が異なっている。Code \ref{code:mspackEx} はMessagePack の使用方法を示したものである。
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182
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183 \lstinputlisting[caption=java 版におけるMessagePack の使用方法, label=code:javamspackEx]{src/MessagePackEx.java}
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184
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185 MessagePack を使用するには圧縮するクラスに対して @Message annotationをつける必要がある。これにより、クラス内で定義したpublic変数が圧縮される。
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186 Code \ref{code:javamspackEx} の17 - 21行目は圧縮解凍の例であり、MessagePackのインスタンスを作成後、msgpack.write(data) を行うことでbyte[] 型にdataを圧縮できる。
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187 解凍にはmsgpack.read を使用し、圧縮されたbyte[] 型と圧縮対象のクラスを渡すことで解凍できる。
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188
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189
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190 C\# のMessagePack は複数存在しており、java と同様な書き方をするMessagePack-CSharp を選択した。
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191
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192 \lstinputlisting[caption=C\# 版におけるMessagePack の使用方法, label=code:csmspackEx]{src/MessagePackEx.cs}
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193
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194 MessagePack-CSharp ではjava 版と同様にクラスに対して圧縮を行うためCode \ref{code:csmspackEx} の1行目で MessagePackObject attribute を追加している。また、圧縮する変数に対してkey を設定することができ、int やstring を指定することができる。
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195
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196
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197 データの圧縮にはMessagePackSerializer.Serialize (data) を使用し、byte[] 型に圧縮される。解凍にはMessagePackSerializer.Deserialize$<T>$(data) を使用する。Deserializeはジェネリスク関数であるため、$<>$内に解凍するデータのクラスを指定する。
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198 Code \ref{code:csmspackEx} の21行目では、変数それぞれにkey を設定していることでjson に展開することが可能である。
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199
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200
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201 \section{CodeGear 実行時のThreadPool からTask への変更}
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202 java では別Thread を
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203
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204
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205
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206 \section{チート対策について}
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207
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208 \section{実装の現状}
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209
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210
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211 \nocite{*}
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212 \bibliographystyle{ipsjunsrt}
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213 \bibliography{riono-sigos}
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214
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215
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216
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217 \end{document}