annotate presentation/slide.html @ 121:137aae675a94

Update slide
author atton <atton@cr.ie.u-ryukyu.ac.jp>
date Tue, 14 Feb 2017 15:03:04 +0900
parents 8a84cda440f3
children c195713cf7d7
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1 <!DOCTYPE html>
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2 <html>
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3 <head>
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4 <meta http-equiv="content-type" content="text/html;charset=utf-8">
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5 <title>メタ計算を用いた Continuation based C の検証手法</title>
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7 <meta name="generator" content="Slide Show (S9) v2.5.0 on Ruby 2.3.3 (2016-11-21) [x86_64-darwin16]">
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8 <meta name="author" content="Yasutaka Higa" >
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9
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10 <!-- style sheet links -->
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11 <link rel="stylesheet" href="s6/themes/projection.css" media="screen,projection">
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13 <link rel="stylesheet" href="s6/themes/print.css" media="print">
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14 <link rel="stylesheet" href="s6/themes/blank.css" media="screen,projection">
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16 <!-- JS -->
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17 <script src="s6/js/jquery-1.11.3.min.js"></script>
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18 <script src="s6/js/jquery.slideshow.js"></script>
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19 <script src="s6/js/jquery.slideshow.counter.js"></script>
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20 <script src="s6/js/jquery.slideshow.controls.js"></script>
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21 <script src="s6/js/jquery.slideshow.footer.js"></script>
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22 <script src="s6/js/jquery.slideshow.autoplay.js"></script>
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24 <!-- prettify -->
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28 <script>
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29 $(document).ready( function() {
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30 Slideshow.init();
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32 $('code').each(function(_, el) {
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33 if (!el.classList.contains('noprettyprint')) {
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38 } );
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41 </script>
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43 <!-- Better Browser Banner for Microsoft Internet Explorer (IE) -->
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44 <!--[if IE]>
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45 <script src="s6/js/jquery.microsoft.js"></script>
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46 <![endif]-->
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50 </head>
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51 <body>
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53 <div class="layout">
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54 <div id="header"></div>
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55 <div id="footer">
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56 <div align="right">
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57 <img src="s6/images/logo.svg" width="200px">
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58 </div>
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59 </div>
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60 </div>
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61
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62 <div class="presentation">
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63
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64 <div class='slide cover'>
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65 <table width="90%" height="90%" border="0" align="center">
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66 <tr>
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67 <td>
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68 <div align="center">
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69 <h1><font color="#808db5">メタ計算を用いた Continuation based C の検証手法</font></h1>
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70 </div>
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71 </td>
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72 </tr>
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73 <tr>
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74 <td>
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75 <div align="left">
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76 Yasutaka Higa
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77
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78 <hr style="color:#ffcc00;background-color:#ffcc00;text-align:left;border:none;width:100%;height:0.2em;">
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79 </div>
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80 </td>
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81 </tr>
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82 </table>
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83 </div>
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84
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85 <div class='slide '>
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86 <!-- === begin markdown block ===
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87
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88 generated by markdown/1.2.0 on Ruby 2.3.3 (2016-11-21) [x86_64-darwin16]
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89 on 2017-02-14 15:02:42 +0900 with Markdown engine kramdown (1.13.0)
103
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90 using options {}
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91 -->
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92
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93 <!-- _S9SLIDE_ -->
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94 <h1 id="section">プログラミング言語とソフトウェアの信頼性</h1>
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95 <ul>
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96 <li>信頼性の高いソフトウェアを提供したい</li>
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97 <li>ソフトウェアの仕様を検証するには二つの手法がある
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98 <ul>
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99 <li>プログラムの持つ状態を数え上げ、仕様から外れた状態が無いかを確認するモデル検査</li>
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100 <li>プログラムの性質を直接証明してしまう定理証明</li>
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101 </ul>
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102 </li>
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103 <li>モデル検査も証明も行ないやすい言語として Continuation based C 言語を開発している</li>
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104 </ul>
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105
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106
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107 </div>
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108 <div class='slide '>
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109 <!-- _S9SLIDE_ -->
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110 <h1 id="section-1">二つのアプローチを用いたソフトウェア検証</h1>
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111 <ul>
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112 <li>モデル検査的アプローチ
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113 <ul>
119
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114 <li>メタ計算ライブラリ akasha による CbC の網羅的な実行</li>
103
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115 <li>非破壊赤黒木の仕様定義と検証</li>
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116 </ul>
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117 </li>
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118 <li>定理証明的なアプローチ
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119 <ul>
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120 <li>依存型を持つ証明支援系言語 Agda による CbC の証明</li>
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121 <li>部分型を利用して Agda 上に型付きの CbC の項を記述する</li>
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122 <li>型システムを通して CbC の形式的な定義を得る</li>
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123 <li>SingleLinkedStack の性質の証明</li>
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124 </ul>
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125 </li>
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126 </ul>
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127
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128
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129 </div>
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130 <div class='slide '>
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131 <!-- _S9SLIDE_ -->
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132 <h1 id="section-2">本発表ではモデル検査的アプローチについて中心に見ていきます</h1>
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133 <ul>
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134 <li>修士論文の内部の比率は半分半分くらい</li>
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135 <li>定理証明の方は説明する内容が多くて複雑</li>
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136 <li>モデル検査的アプローチは過去論文を提出したもの
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137 <ul>
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138 <li>なのでそちらをメインで発表します</li>
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139 </ul>
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140 </li>
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141 </ul>
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142
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143
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144 </div>
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145 <div class='slide '>
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146 <!-- _S9SLIDE_ -->
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147 <h1 id="section-3">モデル検査的アプローチについての流れ</h1>
114
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148 <ul>
121
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149 <li>既存のモデル検査器について</li>
114
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150 <li>Continuation based C (CbC) 言語について</li>
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151 <li>CbC における CodeSegment と DataSegment を用いたプログラミングスタイル</li>
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152 <li>CbC とメタ計算について</li>
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153 <li>CbC で記述された GearsOS とそのデータ構造である赤黒木</li>
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154 <li>赤黒木の仕様の定義とその検証手法</li>
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155 </ul>
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156
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157
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158 </div>
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159 <div class='slide '>
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160 <!-- _S9SLIDE_ -->
121
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161 <h1 id="spin">既存のモデル検査器 spin</h1>
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162 <ul>
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163 <li>spin
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164 <ul>
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165 <li>promela と呼ばれる言語でプログラムを記述</li>
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166 <li>並列に動作するプログラムの仕様を検証可能</li>
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167 <li>検証した promela から実行可能な C ソースを生成可能</li>
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168 <li>仕様は bool になる式を用いた assert</li>
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169 <li>デメリット: promela は C とは記述が異なる</li>
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170 </ul>
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171 </li>
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172 </ul>
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173
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174 <pre><code>assert(x &lt; 10);
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175 </code></pre>
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176
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177
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178 </div>
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179 <div class='slide '>
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180 <!-- _S9SLIDE_ -->
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181 <h1 id="cbmc">既存のモデル検査器 CBMC</h1>
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182 <ul>
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183 <li>CBMC
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184 <ul>
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185 <li>検証対象のCソースを変更しないでも良い</li>
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186 <li>C/C++ 言語の記号実行が可能
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187 <ul>
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188 <li>条件分岐を網羅的に実行</li>
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189 </ul>
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190 </li>
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191 <li>仕様は bool になる式を用いた assert</li>
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192 <li>有限ステップだけ検証する有界モデル検査器</li>
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193 </ul>
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194 </li>
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195 </ul>
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196
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197 <pre><code>assert(x &lt; 10);
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198 </code></pre>
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199
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200
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201 </div>
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202 <div class='slide '>
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203 <!-- _S9SLIDE_ -->
103
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204 <h1 id="continuation-based-c">Continuation based C</h1>
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205 <ul>
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206 <li>当研究室で開発しているプログラミング言語</li>
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207 <li>アセンブラとC言語の中間のような言語であり、構文はほとんど C 言語</li>
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208 <li>OS や組み込みソフトウェアなどを対象にしている</li>
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209 <li>CodeSegment と DataSegment という単位を用いてプログラミングする</li>
121
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210 <li>モデル検査と証明の両検証手法をメタ計算として利用可能
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211 <ul>
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212 <li>CbC で CbC 自身を検証可能</li>
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213 </ul>
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214 </li>
103
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215 </ul>
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216
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217
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218 </div>
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219 <div class='slide '>
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220 <!-- _S9SLIDE_ -->
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221 <h1 id="codesegment">CodeSegment</h1>
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222 <ul>
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223 <li>CodeSegment とは
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224 <ul>
120
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225 <li>処理の単位であり、入力と出力を持つ</li>
103
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226 <li>結合や分割が容易</li>
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227 </ul>
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228 </li>
120
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229 <li>CodeSegment どうしを接続することによりプログラム全体を作る
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230 <ul>
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231 <li>関数呼び出しと違って戻ってこない(goto)</li>
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232 </ul>
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233 </li>
103
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234 </ul>
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235
116
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236 <p><img src="./images/cs.svg" alt="cs" width="50%" /></p>
114
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237
120
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238 <pre><code>__code cs0(int a, int b){
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239 goto cs1(a+b);
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240 }
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241 </code></pre>
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242
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243
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244 </div>
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245 <div class='slide '>
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246 <!-- _S9SLIDE_ -->
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247 <h1 id="datasegment">DataSegment</h1>
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248 <ul>
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249 <li>DataSegment とは
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250 <ul>
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251 <li>データの単位</li>
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252 <li>CodeSegment の入出力にあたる</li>
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253 <li>接続元の Output DataSegment は接続先の Input DataSegment</li>
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254 </ul>
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255 </li>
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256 </ul>
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257
116
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258 <p><img src="./images/ds.svg" alt="ds" width="50%" /></p>
114
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259
120
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260 <pre><code>__code cs0(int a, int b){
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261 goto cs1(a+b);
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262 }
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263 </code></pre>
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264
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265
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266 </div>
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267 <div class='slide '>
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268 <!-- _S9SLIDE_ -->
120
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269 <h1 id="section-4">メタ計算</h1>
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270 <ul>
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271 <li>とある計算を実現するための計算</li>
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272 <li>ネットワーク接続、例外処理、メモリ確保、並列処理など</li>
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273 <li>CbC は通常レベルの計算とメタ計算を分離して考える
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274 <ul>
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275 <li>通常レベルではポインタは出てこない、など</li>
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276 </ul>
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277 </li>
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278 <li>CodeSegment の接続部分に処理を追加することで実現</li>
103
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279 </ul>
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280
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281 <p><img src="./images/meta.svg" alt="meta" width="50%" /></p>
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282
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283
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284 </div>
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285 <div class='slide '>
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286 <!-- _S9SLIDE_ -->
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287 <h1 id="meta-codesegment">Meta CodeSegment</h1>
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288 <ul>
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289 <li>メタ計算を行なう CodeSegment</li>
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290 <li>通常の CodeSegment どうしの接続の間に入る</li>
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291 </ul>
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292
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diff changeset
293 <p><img src="./images/mcs.svg" alt="mcs" width="75%" /></p>
116
ed6719c301fc Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
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diff changeset
294
103
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295
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
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296 </div>
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atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
297 <div class='slide '>
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atton <atton@cr.ie.u-ryukyu.ac.jp>
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298 <!-- _S9SLIDE_ -->
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atton <atton@cr.ie.u-ryukyu.ac.jp>
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299 <h1 id="meta-datasegment">Meta DataSegment</h1>
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parents:
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300 <ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
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301 <li>メタ計算用の DataSegment</li>
76769fd0995e Generate slide
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302 <li>通常の DataSegment を含むような DataSegment</li>
76769fd0995e Generate slide
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diff changeset
303 </ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
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304
121
137aae675a94 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
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diff changeset
305 <p><img src="./images/mds.svg" alt="mds" width="75%" /></p>
116
ed6719c301fc Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 115
diff changeset
306
103
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atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
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307
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
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308 </div>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
309 <div class='slide '>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
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310 <!-- _S9SLIDE_ -->
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
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311 <h1 id="gearsos">並列に信頼性高く動作する GearsOS</h1>
76769fd0995e Generate slide
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parents:
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312 <ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
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313 <li>CbC を用いたメタ計算の例として本研究室で開発している GearsOS がある</li>
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parents:
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314 <li>並列実行やモデル検査をメタ計算として提供する</li>
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parents:
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315 <li>現在はメモリ管理、Synchronized Queue、非破壊赤黒木などが実装済み</li>
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parents:
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316 <li>今回はこの非破壊赤黒木の検証を行なう</li>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
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317 </ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
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318
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
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319
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
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320 </div>
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atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
321 <div class='slide '>
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atton <atton@cr.ie.u-ryukyu.ac.jp>
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322 <!-- _S9SLIDE_ -->
120
8a84cda440f3 Update slide
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parents: 119
diff changeset
323 <h1 id="section-5">赤黒木</h1>
103
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parents:
diff changeset
324 <ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
325 <li>データの保存に用いる二分木</li>
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atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
326 <li>特に赤黒木はノードが持つ赤か黒の色を使って木のバランスを取る
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
327 <ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
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328 <li>ルートノードと葉ノードの色は黒</li>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
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329 <li>赤ノードは2つの黒ノードを子として持つ(よって赤ノードが続くことは無い)</li>
76769fd0995e Generate slide
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parents:
diff changeset
330 <li>ルートから最下位ノードへの経路に含まれる黒ノードの数はどの最下位ノードでも一定</li>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
331 </ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
332 </li>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
333 </ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
334
120
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
335 <p><img src="./images/rbtree.svg" alt="rbtree" width="35%" /></p>
116
ed6719c301fc Update slide
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parents: 115
diff changeset
336
103
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atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
337
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
338 </div>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
339 <div class='slide '>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
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diff changeset
340 <!-- _S9SLIDE_ -->
76769fd0995e Generate slide
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341 <h1 id="gearsos-">GearsOS における赤黒木の利用例(ノードの挿入)</h1>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
342 <ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
343 <li>挿入したい要素を DataSegment に格納して次の CodeSegment へ goto</li>
76769fd0995e Generate slide
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parents:
diff changeset
344 <li>goto する前に Meta CodeSegment が実行されて木に挿入する</li>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
345 </ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
346
114
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
347 <p><img src="./images/put.svg" alt="put" width="50%" /></p>
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
348
120
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
349 <pre><code>goto meta(context, Put);
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
350 </code></pre>
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
351
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
352
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
353 </div>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
354 <div class='slide '>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
355 <!-- _S9SLIDE_ -->
120
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
356 <h1 id="section-6">仕様の記述とその確認</h1>
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
357 <ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
358 <li>「バランスが取れている」とは何かを表現できる必要がある
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
359 <ul>
121
137aae675a94 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 120
diff changeset
360 <li>実行可能な CbC の条件式を使った assert になる</li>
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
361 </ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
362 </li>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
363 <li>そしてそれを保証したい
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
364 <ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
365 <li>プログラムの全ての状態においてこれは常に成り立つのか?</li>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
366 </ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
367 </li>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
368 </ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
369
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
370
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
371 </div>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
372 <div class='slide '>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
373 <!-- _S9SLIDE_ -->
120
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
374 <h1 id="section-7">チェックする仕様</h1>
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
375 <ul>
119
26563097333c Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 117
diff changeset
376 <li>赤黒木の高さに関する仕様に以下のものがある
114
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
377 <ul>
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
378 <li>木をルートから辿った際に最も長い経路は最も短い経路の高々2倍に収まる</li>
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
379 </ul>
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
380 </li>
120
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
381 <li>以下のような条件式を仕様として CbC で定義、検証できる</li>
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
382 </ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
383
119
26563097333c Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 117
diff changeset
384 <pre><code>__code verifySpecificationFinish(struct Context* context) {
26563097333c Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 117
diff changeset
385 if (context-&gt;data[AkashaInfo]-&gt;akashaInfo.maxHeight &gt;
26563097333c Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 117
diff changeset
386 2*context-&gt;data[AkashaInfo]-&gt;akashaInfo.minHeight)
26563097333c Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 117
diff changeset
387 {
26563097333c Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 117
diff changeset
388 context-&gt;next = Exit;
26563097333c Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 117
diff changeset
389 goto meta(context, ShowTrace);
114
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
390 }
119
26563097333c Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 117
diff changeset
391 goto meta(context, DuplicateIterator);
26563097333c Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 117
diff changeset
392 }
114
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
393 </code></pre>
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
394
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
395
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
396 </div>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
397 <div class='slide '>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
398 <!-- _S9SLIDE_ -->
120
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
399 <h1 id="akasha">メタ計算ライブラリ akasha</h1>
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
400 <ul>
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
401 <li>メタ計算としてプログラムの状態を数え上げる
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
402 <ul>
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
403 <li>goto された時に挿入される要素の組み合わせを全て列挙して実行する
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
404 <ul>
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
405 <li>赤黒木の状態の保存、挿入、チェック、次の状態の列挙、赤黒木の再現……</li>
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
406 </ul>
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
407 </li>
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
408 <li>その度に仕様の式は成り立つかをチェックする</li>
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
409 </ul>
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
410 </li>
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
411 <li>ノーマルレベルのコードを検証用に変更せず検証可能</li>
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
412 </ul>
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
413
121
137aae675a94 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 120
diff changeset
414 <p><img src="./images/akashaPut.svg" alt="akashaPut" width="50%" /></p>
120
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
415
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
416
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
417 </div>
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
418 <div class='slide '>
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
419 <!-- _S9SLIDE_ -->
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
420 <h1 id="akasha--cbmc-">akasha と CBMC の比較</h1>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
421 <ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
422 <li>akasha は有限の要素数の組み合わせをチェックする
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
423 <ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
424 <li>要素数が13個までならどの順で木に挿入しても良い</li>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
425 </ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
426 </li>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
427 <li>比較対象として C Bounded Model Checker を使用した
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
428 <ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
429 <li>C/C++ の記号実行を行なう</li>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
430 <li>実行可能なステップ数411だけ展開しても仕様は満たされる</li>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
431 <li>が、恣意的にバグを入れ込んでも反例を返さない</li>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
432 <li>akasha は返した</li>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
433 </ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
434 </li>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
435 <li>固定の要素数までの仕様検査で十分なのか?</li>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
436 </ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
437
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
438
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
439 </div>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
440 <div class='slide '>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
441 <!-- _S9SLIDE_ -->
114
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atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
442 <h1 id="continuation-based-c-">定理証明を Continuation based C へ適用するには</h1>
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
443 <ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
444 <li>任意の回数だけ木の操作を行なっても大丈夫なことを保証したい</li>
121
137aae675a94 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 120
diff changeset
445 <li>直接プログラムの性質を証明</li>
114
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atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
446 <li>Coq, Agda, ATS2 などのプログラミング言語で証明が可能
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
447 <ul>
114
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
448 <li>本当は CbC で CbC 自身を証明したい</li>
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
449 <li>しかし CbC の形式的な定義が無いために今はできない</li>
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
450 </ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
451 </li>
114
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
452 <li>Agda 上に CbC を定義することで形式的な定義を得る</li>
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
453 </ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
454
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
455
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
456 </div>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
457 <div class='slide '>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
458 <!-- _S9SLIDE_ -->
114
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
459 <h1 id="agda--datasegment">Agda と DataSegment</h1>
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
460 <ul>
121
137aae675a94 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 120
diff changeset
461 <li>CbC の DataSegment は Agda のレコード型
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atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 120
diff changeset
462 <ul>
137aae675a94 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 120
diff changeset
463 <li>名前付きの値が複数ある(C の構造体)</li>
137aae675a94 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 120
diff changeset
464 </ul>
137aae675a94 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 120
diff changeset
465 </li>
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
466 </ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
467
114
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
468 <pre><code>__code cs0(int a, int b){
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
469 goto cs1(a+b);
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
470 }
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
471 </code></pre>
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
472 <pre><code>record ds0 : Set where
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
473 field
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
474 a : Int
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
475 b : Int
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
476 </code></pre>
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
477
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
478
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
479 </div>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
480 <div class='slide '>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
481 <!-- _S9SLIDE_ -->
114
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
482 <h1 id="agda--codesegment">Agda と CodeSegment</h1>
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
483 <ul>
121
137aae675a94 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 120
diff changeset
484 <li>CbC の CodeSegment は、Agda の関数型
137aae675a94 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 120
diff changeset
485 <ul>
137aae675a94 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 120
diff changeset
486 <li>Input を取って Output を返す</li>
137aae675a94 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 120
diff changeset
487 </ul>
137aae675a94 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 120
diff changeset
488 </li>
114
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
489 </ul>
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
490
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
491 <pre><code>__code cs0(int a, int b){
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
492 goto cs1(a+b);
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
493 }
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
494 </code></pre>
116
ed6719c301fc Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 115
diff changeset
495 <pre><code>data CodeSegment (A B : Set) : Set where
ed6719c301fc Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 115
diff changeset
496 cs : (A -&gt; B) -&gt; CodeSegment A B
ed6719c301fc Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 115
diff changeset
497
ed6719c301fc Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 115
diff changeset
498 cs0 : CodeSegment ds0 ds1
114
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
499 cs0 = cs (\d -&gt; goto cs1 (record {c = (ds0.a d) + (ds0.b d)}))
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
500 </code></pre>
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
501
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
502
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
503 </div>
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
504 <div class='slide '>
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
505 <!-- _S9SLIDE_ -->
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
506 <h1 id="section-8">メタレベルの型付け</h1>
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
507 <ul>
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
508 <li>メタ計算とは通常のレベルとは区別された計算</li>
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
509 <li>任意の通常のレベルの計算を扱えなくてはならない
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
510 <ul>
114
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
511 <li>ライブラリが呼び出されるプログラムは無数にあるようなイメージ</li>
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
512 </ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
513 </li>
114
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
514 <li>メタレベルを使うための制約を満たしていれば良い、ということを表現できれば良い</li>
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
515 <li>部分型を使う
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
516 <ul>
114
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
517 <li>Java におけるインターフェース、Haskell における型クラス</li>
120
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
518 <li>「このフィールドXがあればデータ型Tとみなして良い」</li>
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
519 </ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
520 </li>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
521 </ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
522
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
523
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
524 </div>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
525 <div class='slide '>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
526 <!-- _S9SLIDE_ -->
114
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
527 <h1 id="agda-">Agda 上のメタ計算</h1>
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
528 <ul>
114
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
529 <li>ノーマルレベルの型を保持したままメタレベルの計算を利用できる
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
530 <ul>
115
d731f2d0947d Add Makefile
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 114
diff changeset
531 <li>cs0 の定義はメタ計算用に変更しなくても良い</li>
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
532 </ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
533 </li>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
534 </ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
535
120
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
536 <pre><code>cs0 : CodeSegment ds0 ds1
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
537 cs0 = cs (\d -&gt; goto cs1 (record {c = (ds0.a d) + (ds0.b d)}))
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
538 </code></pre>
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
539
115
d731f2d0947d Add Makefile
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 114
diff changeset
540 <pre><code>main : ds1
d731f2d0947d Add Makefile
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 114
diff changeset
541 main = goto cs0 (record {a = 100 ; b = 50})
d731f2d0947d Add Makefile
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 114
diff changeset
542 </code></pre>
d731f2d0947d Add Makefile
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 114
diff changeset
543 <pre><code>main : Meta
120
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
544 main = gotoMeta push cs0 (record {context = (record {a = 100 ; b = 50 ; c = 70})
8a84cda440f3 Update slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
545 ; c' = 0 ; next = (N.cs id)})
115
d731f2d0947d Add Makefile
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 114
diff changeset
546 </code></pre>
d731f2d0947d Add Makefile
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 114
diff changeset
547
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
548
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
549 </div>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
550 <div class='slide '>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
551 <!-- _S9SLIDE_ -->
114
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
552 <h1 id="agda--cbc-">Agda 上に CbC を記述した成果</h1>
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
553 <ul>
114
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
554 <li>部分型で CbC の型付けができた</li>
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
555 <li>メタ計算をきちんと階層化できた
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
556 <ul>
114
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
557 <li>メタ計算にもメタ計算が適用可能</li>
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
558 </ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
559 </li>
114
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
560 <li>赤黒木で利用しているデータ構造スタックの性質を証明できた
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
561 <ul>
114
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
562 <li>任意の回数だけ値を積んで同じだけ取り出すとスタックは変化しない</li>
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
563 </ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
564 </li>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
565 </ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
566
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
567
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
568 </div>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
569 <div class='slide '>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
570 <!-- _S9SLIDE_ -->
114
5cca315b0230 Writing slide...
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 103
diff changeset
571 <h1 id="section-9">まとめ</h1>
103
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
572 <ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
573 <li>Continuation based C 言語を対象にした二種類の検証アプローチ</li>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
574 <li>モデル検査的なアプローチ
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
575 <ul>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
576 <li>継続を上書きして可能な状態を数え上げるメタ計算ライブラリ akasha を実装</li>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
577 <li>有限の要素数まで保証できた</li>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
578 </ul>
76769fd0995e Generate slide
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579 </li>
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580 <li>証明的なアプローチ
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atton <atton@cr.ie.u-ryukyu.ac.jp>
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581 <ul>
76769fd0995e Generate slide
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582 <li>証明支援系 Agda 上で CbC のプログラムを定義して直接証明</li>
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atton <atton@cr.ie.u-ryukyu.ac.jp>
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583 <li>部分型を利用して CbC を型付け</li>
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atton <atton@cr.ie.u-ryukyu.ac.jp>
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584 <li>データ構造 SingleLinkedStack の証明ができた</li>
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atton <atton@cr.ie.u-ryukyu.ac.jp>
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585 </ul>
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atton <atton@cr.ie.u-ryukyu.ac.jp>
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586 </li>
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atton <atton@cr.ie.u-ryukyu.ac.jp>
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587 </ul>
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atton <atton@cr.ie.u-ryukyu.ac.jp>
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588
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atton <atton@cr.ie.u-ryukyu.ac.jp>
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589
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590 </div>
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atton <atton@cr.ie.u-ryukyu.ac.jp>
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591 <div class='slide '>
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592 <!-- _S9SLIDE_ -->
114
5cca315b0230 Writing slide...
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593 <h1 id="section-10">今後の課題</h1>
103
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594 <ul>
121
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595 <li>より大きなサイズの赤黒木の検証</li>
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parents: 120
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596 <li>赤黒木の挿入に関する性質を証明する</li>
103
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597 <li>部分型を利用してCbCを型付け</li>
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atton <atton@cr.ie.u-ryukyu.ac.jp>
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598 <li>依存型をCbC に導入して自身を証明可能にする</li>
76769fd0995e Generate slide
atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
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599 <li>型情報から stub を自動生成すkる</li>
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atton <atton@cr.ie.u-ryukyu.ac.jp>
parents:
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600 </ul>
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atton <atton@cr.ie.u-ryukyu.ac.jp>
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601
120
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parents: 119
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602
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atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
diff changeset
603 </div>
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parents: 119
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604 <div class='slide '>
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parents: 119
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605 <!-- _S9SLIDE_ -->
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606 <h1 id="section-11">発表履歴</h1>
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607 <ul>
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608 <li>Agda 入門.
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parents: 119
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609 <ul>
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610 <li>オープンソースカンファレンス 2014 Okinawa, May 2014.</li>
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611 </ul>
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parents: 119
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612 </li>
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atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
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613 <li>形式手法を学び始めて思うことと、形式手法を広めるには(2p).
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parents: 119
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614 <ul>
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615 <li>情報処理学会ソフトウェア工学研究会 (IPSJ SIGSE) ウィンターワークショップ 2015・ イン・宜野湾 (WWS2015), Jan 2015.</li>
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616 </ul>
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parents: 119
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617 </li>
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atton <atton@cr.ie.u-ryukyu.ac.jp>
parents: 119
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618 <li>Continuation based C を用いたプログラムの検証手法(6p).
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parents: 119
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619 <ul>
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620 <li>2016 年並列/分散/協調処理に関する『松本』サマー・ワークショップ (SWoPP2016)</li>
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621 <li>情報処理学会・プログラミング研究会 第 110 回プログラミング研究会 (PRO-2016-2) Aug 2016.</li>
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622 </ul>
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623 </li>
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parents: 119
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624 </ul>
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625
103
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626 <!-- vim: set filetype=markdown.slide: -->
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627
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628 <!-- === end markdown block === -->
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629 </div>
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630
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631
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632 </div><!-- presentation -->
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633 </body>
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634 </html>